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Vendor dependencies

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This commit is contained in:
Mark Sagi-Kazar
2020-01-31 10:32:00 +01:00
parent ca2d718fe4
commit 0f1927a1ba
1245 changed files with 316980 additions and 43333 deletions
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46
vendor/github.com/prometheus/client_golang/prometheus/counter.go generated vendored
View File

@@ -17,6 +17,7 @@ import (
"errors"
"math"
"sync/atomic"
"time"
dto "github.com/prometheus/client_model/go"
)
@@ -42,11 +43,27 @@ type Counter interface {
Add(float64)
}
// ExemplarAdder is implemented by Counters that offer the option of adding a
// value to the Counter together with an exemplar. Its AddWithExemplar method
// works like the Add method of the Counter interface but also replaces the
// currently saved exemplar (if any) with a new one, created from the provided
// value, the current time as timestamp, and the provided labels. Empty Labels
// will lead to a valid (label-less) exemplar. But if Labels is nil, the current
// exemplar is left in place. AddWithExemplar panics if the value is < 0, if any
// of the provided labels are invalid, or if the provided labels contain more
// than 64 runes in total.
type ExemplarAdder interface {
AddWithExemplar(value float64, exemplar Labels)
}
// CounterOpts is an alias for Opts. See there for doc comments.
type CounterOpts Opts
// NewCounter creates a new Counter based on the provided CounterOpts.
//
// The returned implementation also implements ExemplarAdder. It is safe to
// perform the corresponding type assertion.
//
// The returned implementation tracks the counter value in two separate
// variables, a float64 and a uint64. The latter is used to track calls of the
// Inc method and calls of the Add method with a value that can be represented
@@ -61,7 +78,7 @@ func NewCounter(opts CounterOpts) Counter {
nil,
opts.ConstLabels,
)
result := &counter{desc: desc, labelPairs: desc.constLabelPairs}
result := &counter{desc: desc, labelPairs: desc.constLabelPairs, now: time.Now}
result.init(result) // Init self-collection.
return result
}
@@ -78,6 +95,9 @@ type counter struct {
desc *Desc
labelPairs []*dto.LabelPair
exemplar atomic.Value // Containing nil or a *dto.Exemplar.
now func() time.Time // To mock out time.Now() for testing.
}
func (c *counter) Desc() *Desc {
@@ -88,6 +108,7 @@ func (c *counter) Add(v float64) {
if v < 0 {
panic(errors.New("counter cannot decrease in value"))
}
ival := uint64(v)
if float64(ival) == v {
atomic.AddUint64(&c.valInt, ival)
@@ -103,6 +124,11 @@ func (c *counter) Add(v float64) {
}
}
func (c *counter) AddWithExemplar(v float64, e Labels) {
c.Add(v)
c.updateExemplar(v, e)
}
func (c *counter) Inc() {
atomic.AddUint64(&c.valInt, 1)
}
@@ -112,7 +138,23 @@ func (c *counter) Write(out *dto.Metric) error {
ival := atomic.LoadUint64(&c.valInt)
val := fval + float64(ival)
return populateMetric(CounterValue, val, c.labelPairs, out)
var exemplar *dto.Exemplar
if e := c.exemplar.Load(); e != nil {
exemplar = e.(*dto.Exemplar)
}
return populateMetric(CounterValue, val, c.labelPairs, exemplar, out)
}
func (c *counter) updateExemplar(v float64, l Labels) {
if l == nil {
return
}
e, err := newExemplar(v, c.now(), l)
if err != nil {
panic(err)
}
c.exemplar.Store(e)
}
// CounterVec is a Collector that bundles a set of Counters that all share the

21
vendor/github.com/prometheus/client_golang/prometheus/desc.go generated vendored
View File

@@ -19,6 +19,7 @@ import (
"sort"
"strings"
"github.com/cespare/xxhash/v2"
"github.com/golang/protobuf/proto"
"github.com/prometheus/common/model"
@@ -126,24 +127,24 @@ func NewDesc(fqName, help string, variableLabels []string, constLabels Labels) *
return d
}
vh := hashNew()
xxh := xxhash.New()
for _, val := range labelValues {
vh = hashAdd(vh, val)
vh = hashAddByte(vh, separatorByte)
xxh.WriteString(val)
xxh.Write(separatorByteSlice)
}
d.id = vh
d.id = xxh.Sum64()
// Sort labelNames so that order doesn't matter for the hash.
sort.Strings(labelNames)
// Now hash together (in this order) the help string and the sorted
// label names.
lh := hashNew()
lh = hashAdd(lh, help)
lh = hashAddByte(lh, separatorByte)
xxh.Reset()
xxh.WriteString(help)
xxh.Write(separatorByteSlice)
for _, labelName := range labelNames {
lh = hashAdd(lh, labelName)
lh = hashAddByte(lh, separatorByte)
xxh.WriteString(labelName)
xxh.Write(separatorByteSlice)
}
d.dimHash = lh
d.dimHash = xxh.Sum64()
d.constLabelPairs = make([]*dto.LabelPair, 0, len(constLabels))
for n, v := range constLabels {

11
vendor/github.com/prometheus/client_golang/prometheus/gauge.go generated vendored
View File

@@ -123,7 +123,7 @@ func (g *gauge) Sub(val float64) {
func (g *gauge) Write(out *dto.Metric) error {
val := math.Float64frombits(atomic.LoadUint64(&g.valBits))
return populateMetric(GaugeValue, val, g.labelPairs, out)
return populateMetric(GaugeValue, val, g.labelPairs, nil, out)
}
// GaugeVec is a Collector that bundles a set of Gauges that all share the same
@@ -273,9 +273,12 @@ type GaugeFunc interface {
// NewGaugeFunc creates a new GaugeFunc based on the provided GaugeOpts. The
// value reported is determined by calling the given function from within the
// Write method. Take into account that metric collection may happen
// concurrently. If that results in concurrent calls to Write, like in the case
// where a GaugeFunc is directly registered with Prometheus, the provided
// function must be concurrency-safe.
// concurrently. Therefore, it must be safe to call the provided function
// concurrently.
//
// NewGaugeFunc is a good way to create an “info” style metric with a constant
// value of 1. Example:
// https://github.com/prometheus/common/blob/8558a5b7db3c84fa38b4766966059a7bd5bfa2ee/version/info.go#L36-L56
func NewGaugeFunc(opts GaugeOpts, function func() float64) GaugeFunc {
return newValueFunc(NewDesc(
BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),

2
vendor/github.com/prometheus/client_golang/prometheus/go_collector.go generated vendored
View File

@@ -73,7 +73,7 @@ func NewGoCollector() Collector {
nil, nil),
gcDesc: NewDesc(
"go_gc_duration_seconds",
"A summary of the GC invocation durations.",
"A summary of the pause duration of garbage collection cycles.",
nil, nil),
goInfoDesc: NewDesc(
"go_info",

114
vendor/github.com/prometheus/client_golang/prometheus/histogram.go generated vendored
View File

@@ -20,6 +20,7 @@ import (
"sort"
"sync"
"sync/atomic"
"time"
"github.com/golang/protobuf/proto"
@@ -138,7 +139,7 @@ type HistogramOpts struct {
// better covered by target labels set by the scraping Prometheus
// server, or by one specific metric (e.g. a build_info or a
// machine_role metric). See also
// https://prometheus.io/docs/instrumenting/writing_exporters/#target-labels,-not-static-scraped-labels
// https://prometheus.io/docs/instrumenting/writing_exporters/#target-labels-not-static-scraped-labels
ConstLabels Labels
// Buckets defines the buckets into which observations are counted. Each
@@ -151,6 +152,10 @@ type HistogramOpts struct {
// NewHistogram creates a new Histogram based on the provided HistogramOpts. It
// panics if the buckets in HistogramOpts are not in strictly increasing order.
//
// The returned implementation also implements ExemplarObserver. It is safe to
// perform the corresponding type assertion. Exemplars are tracked separately
// for each bucket.
func NewHistogram(opts HistogramOpts) Histogram {
return newHistogram(
NewDesc(
@@ -187,7 +192,8 @@ func newHistogram(desc *Desc, opts HistogramOpts, labelValues ...string) Histogr
desc: desc,
upperBounds: opts.Buckets,
labelPairs: makeLabelPairs(desc, labelValues),
counts: [2]*histogramCounts{&histogramCounts{}, &histogramCounts{}},
counts: [2]*histogramCounts{{}, {}},
now: time.Now,
}
for i, upperBound := range h.upperBounds {
if i < len(h.upperBounds)-1 {
@@ -205,9 +211,10 @@ func newHistogram(desc *Desc, opts HistogramOpts, labelValues ...string) Histogr
}
}
// Finally we know the final length of h.upperBounds and can make buckets
// for both counts:
// for both counts as well as exemplars:
h.counts[0].buckets = make([]uint64, len(h.upperBounds))
h.counts[1].buckets = make([]uint64, len(h.upperBounds))
h.exemplars = make([]atomic.Value, len(h.upperBounds)+1)
h.init(h) // Init self-collection.
return h
@@ -254,6 +261,9 @@ type histogram struct {
upperBounds []float64
labelPairs []*dto.LabelPair
exemplars []atomic.Value // One more than buckets (to include +Inf), each a *dto.Exemplar.
now func() time.Time // To mock out time.Now() for testing.
}
func (h *histogram) Desc() *Desc {
@@ -261,36 +271,13 @@ func (h *histogram) Desc() *Desc {
}
func (h *histogram) Observe(v float64) {
// TODO(beorn7): For small numbers of buckets (<30), a linear search is
// slightly faster than the binary search. If we really care, we could
// switch from one search strategy to the other depending on the number
// of buckets.
//
// Microbenchmarks (BenchmarkHistogramNoLabels):
// 11 buckets: 38.3 ns/op linear - binary 48.7 ns/op
// 100 buckets: 78.1 ns/op linear - binary 54.9 ns/op
// 300 buckets: 154 ns/op linear - binary 61.6 ns/op
i := sort.SearchFloat64s(h.upperBounds, v)
h.observe(v, h.findBucket(v))
}
// We increment h.countAndHotIdx so that the counter in the lower
// 63 bits gets incremented. At the same time, we get the new value
// back, which we can use to find the currently-hot counts.
n := atomic.AddUint64(&h.countAndHotIdx, 1)
hotCounts := h.counts[n>>63]
if i < len(h.upperBounds) {
atomic.AddUint64(&hotCounts.buckets[i], 1)
}
for {
oldBits := atomic.LoadUint64(&hotCounts.sumBits)
newBits := math.Float64bits(math.Float64frombits(oldBits) + v)
if atomic.CompareAndSwapUint64(&hotCounts.sumBits, oldBits, newBits) {
break
}
}
// Increment count last as we take it as a signal that the observation
// is complete.
atomic.AddUint64(&hotCounts.count, 1)
func (h *histogram) ObserveWithExemplar(v float64, e Labels) {
i := h.findBucket(v)
h.observe(v, i)
h.updateExemplar(v, i, e)
}
func (h *histogram) Write(out *dto.Metric) error {
@@ -329,6 +316,18 @@ func (h *histogram) Write(out *dto.Metric) error {
CumulativeCount: proto.Uint64(cumCount),
UpperBound: proto.Float64(upperBound),
}
if e := h.exemplars[i].Load(); e != nil {
his.Bucket[i].Exemplar = e.(*dto.Exemplar)
}
}
// If there is an exemplar for the +Inf bucket, we have to add that bucket explicitly.
if e := h.exemplars[len(h.upperBounds)].Load(); e != nil {
b := &dto.Bucket{
CumulativeCount: proto.Uint64(count),
UpperBound: proto.Float64(math.Inf(1)),
Exemplar: e.(*dto.Exemplar),
}
his.Bucket = append(his.Bucket, b)
}
out.Histogram = his
@@ -352,6 +351,57 @@ func (h *histogram) Write(out *dto.Metric) error {
return nil
}
// findBucket returns the index of the bucket for the provided value, or
// len(h.upperBounds) for the +Inf bucket.
func (h *histogram) findBucket(v float64) int {
// TODO(beorn7): For small numbers of buckets (<30), a linear search is
// slightly faster than the binary search. If we really care, we could
// switch from one search strategy to the other depending on the number
// of buckets.
//
// Microbenchmarks (BenchmarkHistogramNoLabels):
// 11 buckets: 38.3 ns/op linear - binary 48.7 ns/op
// 100 buckets: 78.1 ns/op linear - binary 54.9 ns/op
// 300 buckets: 154 ns/op linear - binary 61.6 ns/op
return sort.SearchFloat64s(h.upperBounds, v)
}
// observe is the implementation for Observe without the findBucket part.
func (h *histogram) observe(v float64, bucket int) {
// We increment h.countAndHotIdx so that the counter in the lower
// 63 bits gets incremented. At the same time, we get the new value
// back, which we can use to find the currently-hot counts.
n := atomic.AddUint64(&h.countAndHotIdx, 1)
hotCounts := h.counts[n>>63]
if bucket < len(h.upperBounds) {
atomic.AddUint64(&hotCounts.buckets[bucket], 1)
}
for {
oldBits := atomic.LoadUint64(&hotCounts.sumBits)
newBits := math.Float64bits(math.Float64frombits(oldBits) + v)
if atomic.CompareAndSwapUint64(&hotCounts.sumBits, oldBits, newBits) {
break
}
}
// Increment count last as we take it as a signal that the observation
// is complete.
atomic.AddUint64(&hotCounts.count, 1)
}
// updateExemplar replaces the exemplar for the provided bucket. With empty
// labels, it's a no-op. It panics if any of the labels is invalid.
func (h *histogram) updateExemplar(v float64, bucket int, l Labels) {
if l == nil {
return
}
e, err := newExemplar(v, h.now(), l)
if err != nil {
panic(err)
}
h.exemplars[bucket].Store(e)
}
// HistogramVec is a Collector that bundles a set of Histograms that all share the
// same Desc, but have different values for their variable labels. This is used
// if you want to count the same thing partitioned by various dimensions

3
vendor/github.com/prometheus/client_golang/prometheus/metric.go generated vendored
View File

@@ -18,11 +18,12 @@ import (
"time"
"github.com/golang/protobuf/proto"
"github.com/prometheus/common/model"
dto "github.com/prometheus/client_model/go"
)
const separatorByte byte = 255
var separatorByteSlice = []byte{model.SeparatorByte} // For convenient use with xxhash.
// A Metric models a single sample value with its meta data being exported to
// Prometheus. Implementations of Metric in this package are Gauge, Counter,

12
vendor/github.com/prometheus/client_golang/prometheus/observer.go generated vendored
View File

@@ -50,3 +50,15 @@ type ObserverVec interface {
Collector
}
// ExemplarObserver is implemented by Observers that offer the option of
// observing a value together with an exemplar. Its ObserveWithExemplar method
// works like the Observe method of an Observer but also replaces the currently
// saved exemplar (if any) with a new one, created from the provided value, the
// current time as timestamp, and the provided Labels. Empty Labels will lead to
// a valid (label-less) exemplar. But if Labels is nil, the current exemplar is
// left in place. ObserveWithExemplar panics if any of the provided labels are
// invalid or if the provided labels contain more than 64 runes in total.
type ExemplarObserver interface {
ObserveWithExemplar(value float64, exemplar Labels)
}

9
vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator.go generated vendored
View File

@@ -62,6 +62,8 @@ func (r *responseWriterDelegator) WriteHeader(code int) {
}
func (r *responseWriterDelegator) Write(b []byte) (int, error) {
// If applicable, call WriteHeader here so that observeWriteHeader is
// handled appropriately.
if !r.wroteHeader {
r.WriteHeader(http.StatusOK)
}
@@ -82,12 +84,19 @@ func (d closeNotifierDelegator) CloseNotify() <-chan bool {
return d.ResponseWriter.(http.CloseNotifier).CloseNotify()
}
func (d flusherDelegator) Flush() {
// If applicable, call WriteHeader here so that observeWriteHeader is
// handled appropriately.
if !d.wroteHeader {
d.WriteHeader(http.StatusOK)
}
d.ResponseWriter.(http.Flusher).Flush()
}
func (d hijackerDelegator) Hijack() (net.Conn, *bufio.ReadWriter, error) {
return d.ResponseWriter.(http.Hijacker).Hijack()
}
func (d readerFromDelegator) ReadFrom(re io.Reader) (int64, error) {
// If applicable, call WriteHeader here so that observeWriteHeader is
// handled appropriately.
if !d.wroteHeader {
d.WriteHeader(http.StatusOK)
}

63
vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go generated vendored
View File

@@ -144,7 +144,12 @@ func HandlerFor(reg prometheus.Gatherer, opts HandlerOpts) http.Handler {
}
}
contentType := expfmt.Negotiate(req.Header)
var contentType expfmt.Format
if opts.EnableOpenMetrics {
contentType = expfmt.NegotiateIncludingOpenMetrics(req.Header)
} else {
contentType = expfmt.Negotiate(req.Header)
}
header := rsp.Header()
header.Set(contentTypeHeader, string(contentType))
@@ -163,22 +168,38 @@ func HandlerFor(reg prometheus.Gatherer, opts HandlerOpts) http.Handler {
enc := expfmt.NewEncoder(w, contentType)
var lastErr error
// handleError handles the error according to opts.ErrorHandling
// and returns true if we have to abort after the handling.
handleError := func(err error) bool {
if err == nil {
return false
}
lastErr = err
if opts.ErrorLog != nil {
opts.ErrorLog.Println("error encoding and sending metric family:", err)
}
errCnt.WithLabelValues("encoding").Inc()
switch opts.ErrorHandling {
case PanicOnError:
panic(err)
case HTTPErrorOnError:
httpError(rsp, err)
return true
}
// Do nothing in all other cases, including ContinueOnError.
return false
}
for _, mf := range mfs {
if err := enc.Encode(mf); err != nil {
lastErr = err
if opts.ErrorLog != nil {
opts.ErrorLog.Println("error encoding and sending metric family:", err)
}
errCnt.WithLabelValues("encoding").Inc()
switch opts.ErrorHandling {
case PanicOnError:
panic(err)
case ContinueOnError:
// Handled later.
case HTTPErrorOnError:
httpError(rsp, err)
return
}
if handleError(enc.Encode(mf)) {
return
}
}
if closer, ok := enc.(expfmt.Closer); ok {
// This in particular takes care of the final "# EOF\n" line for OpenMetrics.
if handleError(closer.Close()) {
return
}
}
@@ -318,6 +339,16 @@ type HandlerOpts struct {
// away). Until the implementation is improved, it is recommended to
// implement a separate timeout in potentially slow Collectors.
Timeout time.Duration
// If true, the experimental OpenMetrics encoding is added to the
// possible options during content negotiation. Note that Prometheus
// 2.5.0+ will negotiate OpenMetrics as first priority. OpenMetrics is
// the only way to transmit exemplars. However, the move to OpenMetrics
// is not completely transparent. Most notably, the values of "quantile"
// labels of Summaries and "le" labels of Histograms are formatted with
// a trailing ".0" if they would otherwise look like integer numbers
// (which changes the identity of the resulting series on the Prometheus
// server).
EnableOpenMetrics bool
}
// gzipAccepted returns whether the client will accept gzip-encoded content.

32
vendor/github.com/prometheus/client_golang/prometheus/registry.go generated vendored
View File

@@ -25,6 +25,7 @@ import (
"sync"
"unicode/utf8"
"github.com/cespare/xxhash/v2"
"github.com/golang/protobuf/proto"
"github.com/prometheus/common/expfmt"
@@ -74,7 +75,7 @@ func NewRegistry() *Registry {
// NewPedanticRegistry returns a registry that checks during collection if each
// collected Metric is consistent with its reported Desc, and if the Desc has
// actually been registered with the registry. Unchecked Collectors (those whose
// Describe methed does not yield any descriptors) are excluded from the check.
// Describe method does not yield any descriptors) are excluded from the check.
//
// Usually, a Registry will be happy as long as the union of all collected
// Metrics is consistent and valid even if some metrics are not consistent with
@@ -266,7 +267,7 @@ func (r *Registry) Register(c Collector) error {
descChan = make(chan *Desc, capDescChan)
newDescIDs = map[uint64]struct{}{}
newDimHashesByName = map[string]uint64{}
collectorID uint64 // Just a sum of all desc IDs.
collectorID uint64 // All desc IDs XOR'd together.
duplicateDescErr error
)
go func() {
@@ -293,12 +294,12 @@ func (r *Registry) Register(c Collector) error {
if _, exists := r.descIDs[desc.id]; exists {
duplicateDescErr = fmt.Errorf("descriptor %s already exists with the same fully-qualified name and const label values", desc)
}
// If it is not a duplicate desc in this collector, add it to
// If it is not a duplicate desc in this collector, XOR it to
// the collectorID. (We allow duplicate descs within the same
// collector, but their existence must be a no-op.)
if _, exists := newDescIDs[desc.id]; !exists {
newDescIDs[desc.id] = struct{}{}
collectorID += desc.id
collectorID ^= desc.id
}
// Are all the label names and the help string consistent with
@@ -360,7 +361,7 @@ func (r *Registry) Unregister(c Collector) bool {
var (
descChan = make(chan *Desc, capDescChan)
descIDs = map[uint64]struct{}{}
collectorID uint64 // Just a sum of the desc IDs.
collectorID uint64 // All desc IDs XOR'd together.
)
go func() {
c.Describe(descChan)
@@ -368,7 +369,7 @@ func (r *Registry) Unregister(c Collector) bool {
}()
for desc := range descChan {
if _, exists := descIDs[desc.id]; !exists {
collectorID += desc.id
collectorID ^= desc.id
descIDs[desc.id] = struct{}{}
}
}
@@ -875,9 +876,9 @@ func checkMetricConsistency(
}
// Is the metric unique (i.e. no other metric with the same name and the same labels)?
h := hashNew()
h = hashAdd(h, name)
h = hashAddByte(h, separatorByte)
h := xxhash.New()
h.WriteString(name)
h.Write(separatorByteSlice)
// Make sure label pairs are sorted. We depend on it for the consistency
// check.
if !sort.IsSorted(labelPairSorter(dtoMetric.Label)) {
@@ -888,18 +889,19 @@ func checkMetricConsistency(
dtoMetric.Label = copiedLabels
}
for _, lp := range dtoMetric.Label {
h = hashAdd(h, lp.GetName())
h = hashAddByte(h, separatorByte)
h = hashAdd(h, lp.GetValue())
h = hashAddByte(h, separatorByte)
h.WriteString(lp.GetName())
h.Write(separatorByteSlice)
h.WriteString(lp.GetValue())
h.Write(separatorByteSlice)
}
if _, exists := metricHashes[h]; exists {
hSum := h.Sum64()
if _, exists := metricHashes[hSum]; exists {
return fmt.Errorf(
"collected metric %q { %s} was collected before with the same name and label values",
name, dtoMetric,
)
}
metricHashes[h] = struct{}{}
metricHashes[hSum] = struct{}{}
return nil
}

2
vendor/github.com/prometheus/client_golang/prometheus/summary.go generated vendored
View File

@@ -208,7 +208,7 @@ func newSummary(desc *Desc, opts SummaryOpts, labelValues ...string) Summary {
s := &noObjectivesSummary{
desc: desc,
labelPairs: makeLabelPairs(desc, labelValues),
counts: [2]*summaryCounts{&summaryCounts{}, &summaryCounts{}},
counts: [2]*summaryCounts{{}, {}},
}
s.init(s) // Init self-collection.
return s

47
vendor/github.com/prometheus/client_golang/prometheus/value.go generated vendored
View File

@@ -16,8 +16,11 @@ package prometheus
import (
"fmt"
"sort"
"time"
"unicode/utf8"
"github.com/golang/protobuf/proto"
"github.com/golang/protobuf/ptypes"
dto "github.com/prometheus/client_model/go"
)
@@ -69,7 +72,7 @@ func (v *valueFunc) Desc() *Desc {
}
func (v *valueFunc) Write(out *dto.Metric) error {
return populateMetric(v.valType, v.function(), v.labelPairs, out)
return populateMetric(v.valType, v.function(), v.labelPairs, nil, out)
}
// NewConstMetric returns a metric with one fixed value that cannot be
@@ -116,19 +119,20 @@ func (m *constMetric) Desc() *Desc {
}
func (m *constMetric) Write(out *dto.Metric) error {
return populateMetric(m.valType, m.val, m.labelPairs, out)
return populateMetric(m.valType, m.val, m.labelPairs, nil, out)
}
func populateMetric(
t ValueType,
v float64,
labelPairs []*dto.LabelPair,
e *dto.Exemplar,
m *dto.Metric,
) error {
m.Label = labelPairs
switch t {
case CounterValue:
m.Counter = &dto.Counter{Value: proto.Float64(v)}
m.Counter = &dto.Counter{Value: proto.Float64(v), Exemplar: e}
case GaugeValue:
m.Gauge = &dto.Gauge{Value: proto.Float64(v)}
case UntypedValue:
@@ -160,3 +164,40 @@ func makeLabelPairs(desc *Desc, labelValues []string) []*dto.LabelPair {
sort.Sort(labelPairSorter(labelPairs))
return labelPairs
}
// ExemplarMaxRunes is the max total number of runes allowed in exemplar labels.
const ExemplarMaxRunes = 64
// newExemplar creates a new dto.Exemplar from the provided values. An error is
// returned if any of the label names or values are invalid or if the total
// number of runes in the label names and values exceeds ExemplarMaxRunes.
func newExemplar(value float64, ts time.Time, l Labels) (*dto.Exemplar, error) {
e := &dto.Exemplar{}
e.Value = proto.Float64(value)
tsProto, err := ptypes.TimestampProto(ts)
if err != nil {
return nil, err
}
e.Timestamp = tsProto
labelPairs := make([]*dto.LabelPair, 0, len(l))
var runes int
for name, value := range l {
if !checkLabelName(name) {
return nil, fmt.Errorf("exemplar label name %q is invalid", name)
}
runes += utf8.RuneCountInString(name)
if !utf8.ValidString(value) {
return nil, fmt.Errorf("exemplar label value %q is not valid UTF-8", value)
}
runes += utf8.RuneCountInString(value)
labelPairs = append(labelPairs, &dto.LabelPair{
Name: proto.String(name),
Value: proto.String(value),
})
}
if runes > ExemplarMaxRunes {
return nil, fmt.Errorf("exemplar labels have %d runes, exceeding the limit of %d", runes, ExemplarMaxRunes)
}
e.Label = labelPairs
return e, nil
}

2
vendor/github.com/prometheus/client_golang/prometheus/vec.go generated vendored
View File

@@ -24,7 +24,7 @@ import (
// their label values. metricVec is not used directly (and therefore
// unexported). It is used as a building block for implementations of vectors of
// a given metric type, like GaugeVec, CounterVec, SummaryVec, and HistogramVec.
// It also handles label currying. It uses basicMetricVec internally.
// It also handles label currying.
type metricVec struct {
*metricMap

266
vendor/github.com/prometheus/client_model/go/metrics.pb.go generated vendored
View File

@@ -1,11 +1,14 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// source: metrics.proto
package io_prometheus_client // import "github.com/prometheus/client_model/go"
package io_prometheus_client
import proto "github.com/golang/protobuf/proto"
import fmt "fmt"
import math "math"
import (
fmt "fmt"
proto "github.com/golang/protobuf/proto"
timestamp "github.com/golang/protobuf/ptypes/timestamp"
math "math"
)
// Reference imports to suppress errors if they are not otherwise used.
var _ = proto.Marshal
@@ -16,7 +19,7 @@ var _ = math.Inf
// is compatible with the proto package it is being compiled against.
// A compilation error at this line likely means your copy of the
// proto package needs to be updated.
const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
type MetricType int32
@@ -35,6 +38,7 @@ var MetricType_name = map[int32]string{
3: "UNTYPED",
4: "HISTOGRAM",
}
var MetricType_value = map[string]int32{
"COUNTER": 0,
"GAUGE": 1,
@@ -48,9 +52,11 @@ func (x MetricType) Enum() *MetricType {
*p = x
return p
}
func (x MetricType) String() string {
return proto.EnumName(MetricType_name, int32(x))
}
func (x *MetricType) UnmarshalJSON(data []byte) error {
value, err := proto.UnmarshalJSONEnum(MetricType_value, data, "MetricType")
if err != nil {
@@ -59,8 +65,9 @@ func (x *MetricType) UnmarshalJSON(data []byte) error {
*x = MetricType(value)
return nil
}
func (MetricType) EnumDescriptor() ([]byte, []int) {
return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{0}
return fileDescriptor_6039342a2ba47b72, []int{0}
}
type LabelPair struct {
@@ -75,16 +82,17 @@ func (m *LabelPair) Reset() { *m = LabelPair{} }
func (m *LabelPair) String() string { return proto.CompactTextString(m) }
func (*LabelPair) ProtoMessage() {}
func (*LabelPair) Descriptor() ([]byte, []int) {
return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{0}
return fileDescriptor_6039342a2ba47b72, []int{0}
}
func (m *LabelPair) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_LabelPair.Unmarshal(m, b)
}
func (m *LabelPair) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_LabelPair.Marshal(b, m, deterministic)
}
func (dst *LabelPair) XXX_Merge(src proto.Message) {
xxx_messageInfo_LabelPair.Merge(dst, src)
func (m *LabelPair) XXX_Merge(src proto.Message) {
xxx_messageInfo_LabelPair.Merge(m, src)
}
func (m *LabelPair) XXX_Size() int {
return xxx_messageInfo_LabelPair.Size(m)
@@ -120,16 +128,17 @@ func (m *Gauge) Reset() { *m = Gauge{} }
func (m *Gauge) String() string { return proto.CompactTextString(m) }
func (*Gauge) ProtoMessage() {}
func (*Gauge) Descriptor() ([]byte, []int) {
return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{1}
return fileDescriptor_6039342a2ba47b72, []int{1}
}
func (m *Gauge) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Gauge.Unmarshal(m, b)
}
func (m *Gauge) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Gauge.Marshal(b, m, deterministic)
}
func (dst *Gauge) XXX_Merge(src proto.Message) {
xxx_messageInfo_Gauge.Merge(dst, src)
func (m *Gauge) XXX_Merge(src proto.Message) {
xxx_messageInfo_Gauge.Merge(m, src)
}
func (m *Gauge) XXX_Size() int {
return xxx_messageInfo_Gauge.Size(m)
@@ -148,26 +157,28 @@ func (m *Gauge) GetValue() float64 {
}
type Counter struct {
Value *float64 `protobuf:"fixed64,1,opt,name=value" json:"value,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
Value *float64 `protobuf:"fixed64,1,opt,name=value" json:"value,omitempty"`
Exemplar *Exemplar `protobuf:"bytes,2,opt,name=exemplar" json:"exemplar,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *Counter) Reset() { *m = Counter{} }
func (m *Counter) String() string { return proto.CompactTextString(m) }
func (*Counter) ProtoMessage() {}
func (*Counter) Descriptor() ([]byte, []int) {
return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{2}
return fileDescriptor_6039342a2ba47b72, []int{2}
}
func (m *Counter) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Counter.Unmarshal(m, b)
}
func (m *Counter) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Counter.Marshal(b, m, deterministic)
}
func (dst *Counter) XXX_Merge(src proto.Message) {
xxx_messageInfo_Counter.Merge(dst, src)
func (m *Counter) XXX_Merge(src proto.Message) {
xxx_messageInfo_Counter.Merge(m, src)
}
func (m *Counter) XXX_Size() int {
return xxx_messageInfo_Counter.Size(m)
@@ -185,6 +196,13 @@ func (m *Counter) GetValue() float64 {
return 0
}
func (m *Counter) GetExemplar() *Exemplar {
if m != nil {
return m.Exemplar
}
return nil
}
type Quantile struct {
Quantile *float64 `protobuf:"fixed64,1,opt,name=quantile" json:"quantile,omitempty"`
Value *float64 `protobuf:"fixed64,2,opt,name=value" json:"value,omitempty"`
@@ -197,16 +215,17 @@ func (m *Quantile) Reset() { *m = Quantile{} }
func (m *Quantile) String() string { return proto.CompactTextString(m) }
func (*Quantile) ProtoMessage() {}
func (*Quantile) Descriptor() ([]byte, []int) {
return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{3}
return fileDescriptor_6039342a2ba47b72, []int{3}
}
func (m *Quantile) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Quantile.Unmarshal(m, b)
}
func (m *Quantile) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Quantile.Marshal(b, m, deterministic)
}
func (dst *Quantile) XXX_Merge(src proto.Message) {
xxx_messageInfo_Quantile.Merge(dst, src)
func (m *Quantile) XXX_Merge(src proto.Message) {
xxx_messageInfo_Quantile.Merge(m, src)
}
func (m *Quantile) XXX_Size() int {
return xxx_messageInfo_Quantile.Size(m)
@@ -244,16 +263,17 @@ func (m *Summary) Reset() { *m = Summary{} }
func (m *Summary) String() string { return proto.CompactTextString(m) }
func (*Summary) ProtoMessage() {}
func (*Summary) Descriptor() ([]byte, []int) {
return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{4}
return fileDescriptor_6039342a2ba47b72, []int{4}
}
func (m *Summary) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Summary.Unmarshal(m, b)
}
func (m *Summary) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Summary.Marshal(b, m, deterministic)
}
func (dst *Summary) XXX_Merge(src proto.Message) {
xxx_messageInfo_Summary.Merge(dst, src)
func (m *Summary) XXX_Merge(src proto.Message) {
xxx_messageInfo_Summary.Merge(m, src)
}
func (m *Summary) XXX_Size() int {
return xxx_messageInfo_Summary.Size(m)
@@ -296,16 +316,17 @@ func (m *Untyped) Reset() { *m = Untyped{} }
func (m *Untyped) String() string { return proto.CompactTextString(m) }
func (*Untyped) ProtoMessage() {}
func (*Untyped) Descriptor() ([]byte, []int) {
return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{5}
return fileDescriptor_6039342a2ba47b72, []int{5}
}
func (m *Untyped) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Untyped.Unmarshal(m, b)
}
func (m *Untyped) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Untyped.Marshal(b, m, deterministic)
}
func (dst *Untyped) XXX_Merge(src proto.Message) {
xxx_messageInfo_Untyped.Merge(dst, src)
func (m *Untyped) XXX_Merge(src proto.Message) {
xxx_messageInfo_Untyped.Merge(m, src)
}
func (m *Untyped) XXX_Size() int {
return xxx_messageInfo_Untyped.Size(m)
@@ -336,16 +357,17 @@ func (m *Histogram) Reset() { *m = Histogram{} }
func (m *Histogram) String() string { return proto.CompactTextString(m) }
func (*Histogram) ProtoMessage() {}
func (*Histogram) Descriptor() ([]byte, []int) {
return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{6}
return fileDescriptor_6039342a2ba47b72, []int{6}
}
func (m *Histogram) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Histogram.Unmarshal(m, b)
}
func (m *Histogram) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Histogram.Marshal(b, m, deterministic)
}
func (dst *Histogram) XXX_Merge(src proto.Message) {
xxx_messageInfo_Histogram.Merge(dst, src)
func (m *Histogram) XXX_Merge(src proto.Message) {
xxx_messageInfo_Histogram.Merge(m, src)
}
func (m *Histogram) XXX_Size() int {
return xxx_messageInfo_Histogram.Size(m)
@@ -378,27 +400,29 @@ func (m *Histogram) GetBucket() []*Bucket {
}
type Bucket struct {
CumulativeCount *uint64 `protobuf:"varint,1,opt,name=cumulative_count,json=cumulativeCount" json:"cumulative_count,omitempty"`
UpperBound *float64 `protobuf:"fixed64,2,opt,name=upper_bound,json=upperBound" json:"upper_bound,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
CumulativeCount *uint64 `protobuf:"varint,1,opt,name=cumulative_count,json=cumulativeCount" json:"cumulative_count,omitempty"`
UpperBound *float64 `protobuf:"fixed64,2,opt,name=upper_bound,json=upperBound" json:"upper_bound,omitempty"`
Exemplar *Exemplar `protobuf:"bytes,3,opt,name=exemplar" json:"exemplar,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *Bucket) Reset() { *m = Bucket{} }
func (m *Bucket) String() string { return proto.CompactTextString(m) }
func (*Bucket) ProtoMessage() {}
func (*Bucket) Descriptor() ([]byte, []int) {
return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{7}
return fileDescriptor_6039342a2ba47b72, []int{7}
}
func (m *Bucket) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Bucket.Unmarshal(m, b)
}
func (m *Bucket) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Bucket.Marshal(b, m, deterministic)
}
func (dst *Bucket) XXX_Merge(src proto.Message) {
xxx_messageInfo_Bucket.Merge(dst, src)
func (m *Bucket) XXX_Merge(src proto.Message) {
xxx_messageInfo_Bucket.Merge(m, src)
}
func (m *Bucket) XXX_Size() int {
return xxx_messageInfo_Bucket.Size(m)
@@ -423,6 +447,68 @@ func (m *Bucket) GetUpperBound() float64 {
return 0
}
func (m *Bucket) GetExemplar() *Exemplar {
if m != nil {
return m.Exemplar
}
return nil
}
type Exemplar struct {
Label []*LabelPair `protobuf:"bytes,1,rep,name=label" json:"label,omitempty"`
Value *float64 `protobuf:"fixed64,2,opt,name=value" json:"value,omitempty"`
Timestamp *timestamp.Timestamp `protobuf:"bytes,3,opt,name=timestamp" json:"timestamp,omitempty"`
XXX_NoUnkeyedLiteral struct{} `json:"-"`
XXX_unrecognized []byte `json:"-"`
XXX_sizecache int32 `json:"-"`
}
func (m *Exemplar) Reset() { *m = Exemplar{} }
func (m *Exemplar) String() string { return proto.CompactTextString(m) }
func (*Exemplar) ProtoMessage() {}
func (*Exemplar) Descriptor() ([]byte, []int) {
return fileDescriptor_6039342a2ba47b72, []int{8}
}
func (m *Exemplar) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Exemplar.Unmarshal(m, b)
}
func (m *Exemplar) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Exemplar.Marshal(b, m, deterministic)
}
func (m *Exemplar) XXX_Merge(src proto.Message) {
xxx_messageInfo_Exemplar.Merge(m, src)
}
func (m *Exemplar) XXX_Size() int {
return xxx_messageInfo_Exemplar.Size(m)
}
func (m *Exemplar) XXX_DiscardUnknown() {
xxx_messageInfo_Exemplar.DiscardUnknown(m)
}
var xxx_messageInfo_Exemplar proto.InternalMessageInfo
func (m *Exemplar) GetLabel() []*LabelPair {
if m != nil {
return m.Label
}
return nil
}
func (m *Exemplar) GetValue() float64 {
if m != nil && m.Value != nil {
return *m.Value
}
return 0
}
func (m *Exemplar) GetTimestamp() *timestamp.Timestamp {
if m != nil {
return m.Timestamp
}
return nil
}
type Metric struct {
Label []*LabelPair `protobuf:"bytes,1,rep,name=label" json:"label,omitempty"`
Gauge *Gauge `protobuf:"bytes,2,opt,name=gauge" json:"gauge,omitempty"`
@@ -440,16 +526,17 @@ func (m *Metric) Reset() { *m = Metric{} }
func (m *Metric) String() string { return proto.CompactTextString(m) }
func (*Metric) ProtoMessage() {}
func (*Metric) Descriptor() ([]byte, []int) {
return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{8}
return fileDescriptor_6039342a2ba47b72, []int{9}
}
func (m *Metric) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_Metric.Unmarshal(m, b)
}
func (m *Metric) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_Metric.Marshal(b, m, deterministic)
}
func (dst *Metric) XXX_Merge(src proto.Message) {
xxx_messageInfo_Metric.Merge(dst, src)
func (m *Metric) XXX_Merge(src proto.Message) {
xxx_messageInfo_Metric.Merge(m, src)
}
func (m *Metric) XXX_Size() int {
return xxx_messageInfo_Metric.Size(m)
@@ -523,16 +610,17 @@ func (m *MetricFamily) Reset() { *m = MetricFamily{} }
func (m *MetricFamily) String() string { return proto.CompactTextString(m) }
func (*MetricFamily) ProtoMessage() {}
func (*MetricFamily) Descriptor() ([]byte, []int) {
return fileDescriptor_metrics_c97c9a2b9560cb8f, []int{9}
return fileDescriptor_6039342a2ba47b72, []int{10}
}
func (m *MetricFamily) XXX_Unmarshal(b []byte) error {
return xxx_messageInfo_MetricFamily.Unmarshal(m, b)
}
func (m *MetricFamily) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
return xxx_messageInfo_MetricFamily.Marshal(b, m, deterministic)
}
func (dst *MetricFamily) XXX_Merge(src proto.Message) {
xxx_messageInfo_MetricFamily.Merge(dst, src)
func (m *MetricFamily) XXX_Merge(src proto.Message) {
xxx_messageInfo_MetricFamily.Merge(m, src)
}
func (m *MetricFamily) XXX_Size() int {
return xxx_messageInfo_MetricFamily.Size(m)
@@ -572,6 +660,7 @@ func (m *MetricFamily) GetMetric() []*Metric {
}
func init() {
proto.RegisterEnum("io.prometheus.client.MetricType", MetricType_name, MetricType_value)
proto.RegisterType((*LabelPair)(nil), "io.prometheus.client.LabelPair")
proto.RegisterType((*Gauge)(nil), "io.prometheus.client.Gauge")
proto.RegisterType((*Counter)(nil), "io.prometheus.client.Counter")
@@ -580,50 +669,55 @@ func init() {
proto.RegisterType((*Untyped)(nil), "io.prometheus.client.Untyped")
proto.RegisterType((*Histogram)(nil), "io.prometheus.client.Histogram")
proto.RegisterType((*Bucket)(nil), "io.prometheus.client.Bucket")
proto.RegisterType((*Exemplar)(nil), "io.prometheus.client.Exemplar")
proto.RegisterType((*Metric)(nil), "io.prometheus.client.Metric")
proto.RegisterType((*MetricFamily)(nil), "io.prometheus.client.MetricFamily")
proto.RegisterEnum("io.prometheus.client.MetricType", MetricType_name, MetricType_value)
}
func init() { proto.RegisterFile("metrics.proto", fileDescriptor_metrics_c97c9a2b9560cb8f) }
func init() { proto.RegisterFile("metrics.proto", fileDescriptor_6039342a2ba47b72) }
var fileDescriptor_metrics_c97c9a2b9560cb8f = []byte{
// 591 bytes of a gzipped FileDescriptorProto
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0xd8, 0x0b, 0x9a, 0x16, 0xe6, 0x07, 0x56, 0x35, 0x3a, 0x00, 0x5b, 0x7a, 0x54, 0x47, 0xf8, 0xff,
0x7e, 0xbf, 0xdd, 0x95, 0x9e, 0x3c, 0x59, 0x16, 0x14, 0x2b, 0xb6, 0x0c, 0x9f, 0x7e, 0x53, 0x02,
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0xf1, 0xf1, 0x34, 0x0c, 0x8f, 0xf1, 0xb5, 0xbf, 0x26, 0x17, 0xd3, 0x8b, 0xc9, 0xf5, 0xd5, 0xd9,
0x47, 0xbf, 0x83, 0x36, 0xc1, 0x3d, 0xff, 0x3c, 0x9e, 0x5c, 0x8e, 0xf0, 0x71, 0xe8, 0xdb, 0x27,
0x18, 0x5a, 0x5f, 0xb2, 0x6f, 0x47, 0xf3, 0x84, 0x2f, 0xc4, 0x6c, 0x18, 0xe7, 0x6c, 0xaf, 0xe9,
0xee, 0xe9, 0x6e, 0xc4, 0xf2, 0x1b, 0x9a, 0xee, 0xcd, 0xf3, 0x77, 0x49, 0x1e, 0x35, 0xdd, 0x48,
0x77, 0xff, 0x06, 0x00, 0x00, 0xff, 0xff, 0x45, 0x21, 0x7f, 0x64, 0x2b, 0x05, 0x00, 0x00,
var fileDescriptor_6039342a2ba47b72 = []byte{
// 665 bytes of a gzipped FileDescriptorProto
0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xac, 0x54, 0xcd, 0x6e, 0xd3, 0x4c,
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0x18, 0x8b, 0x15, 0x25, 0x6c, 0x41, 0x78, 0xe6, 0xfa, 0x51, 0x48, 0x96, 0x6c, 0xab, 0x1b, 0xc4,
0x71, 0x10, 0x91, 0xbe, 0xc4, 0xcc, 0xf9, 0x87, 0x3e, 0x0b, 0x29, 0xc9, 0x98, 0x47, 0x13, 0x45,
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0x6c, 0xa3, 0x67, 0xec, 0x58, 0x58, 0xae, 0xd1, 0x26, 0xd4, 0xaf, 0xbc, 0x88, 0x13, 0x7b, 0x4d,
0x16, 0xd5, 0xc6, 0xd9, 0x86, 0xfa, 0xd0, 0xe3, 0xc1, 0x6f, 0x6d, 0xc1, 0x31, 0xf2, 0xf6, 0x7b,
0x68, 0x1e, 0xc7, 0x7c, 0xc9, 0x48, 0x5a, 0x0d, 0x40, 0x07, 0xd0, 0x22, 0x9f, 0x09, 0x4d, 0x22,
0x2f, 0x95, 0x83, 0xdb, 0xbb, 0xf7, 0xdd, 0xaa, 0x03, 0xb8, 0x03, 0x8d, 0xc2, 0x05, 0xde, 0x79,
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0xff, 0xd0, 0x84, 0x91, 0x73, 0x59, 0x06, 0x00, 0x00,
}

128
vendor/github.com/prometheus/common/expfmt/encode.go generated vendored
View File

@@ -30,17 +30,38 @@ type Encoder interface {
Encode(*dto.MetricFamily) error
}
type encoder func(*dto.MetricFamily) error
func (e encoder) Encode(v *dto.MetricFamily) error {
return e(v)
// Closer is implemented by Encoders that need to be closed to finalize
// encoding. (For example, OpenMetrics needs a final `# EOF` line.)
//
// Note that all Encoder implementations returned from this package implement
// Closer, too, even if the Close call is a no-op. This happens in preparation
// for adding a Close method to the Encoder interface directly in a (mildly
// breaking) release in the future.
type Closer interface {
Close() error
}
// Negotiate returns the Content-Type based on the given Accept header.
// If no appropriate accepted type is found, FmtText is returned.
type encoderCloser struct {
encode func(*dto.MetricFamily) error
close func() error
}
func (ec encoderCloser) Encode(v *dto.MetricFamily) error {
return ec.encode(v)
}
func (ec encoderCloser) Close() error {
return ec.close()
}
// Negotiate returns the Content-Type based on the given Accept header. If no
// appropriate accepted type is found, FmtText is returned (which is the
// Prometheus text format). This function will never negotiate FmtOpenMetrics,
// as the support is still experimental. To include the option to negotiate
// FmtOpenMetrics, use NegotiateOpenMetrics.
func Negotiate(h http.Header) Format {
for _, ac := range goautoneg.ParseAccept(h.Get(hdrAccept)) {
// Check for protocol buffer
ver := ac.Params["version"]
if ac.Type+"/"+ac.SubType == ProtoType && ac.Params["proto"] == ProtoProtocol {
switch ac.Params["encoding"] {
case "delimited":
@@ -51,8 +72,6 @@ func Negotiate(h http.Header) Format {
return FmtProtoCompact
}
}
// Check for text format.
ver := ac.Params["version"]
if ac.Type == "text" && ac.SubType == "plain" && (ver == TextVersion || ver == "") {
return FmtText
}
@@ -60,29 +79,84 @@ func Negotiate(h http.Header) Format {
return FmtText
}
// NewEncoder returns a new encoder based on content type negotiation.
// NegotiateIncludingOpenMetrics works like Negotiate but includes
// FmtOpenMetrics as an option for the result. Note that this function is
// temporary and will disappear once FmtOpenMetrics is fully supported and as
// such may be negotiated by the normal Negotiate function.
func NegotiateIncludingOpenMetrics(h http.Header) Format {
for _, ac := range goautoneg.ParseAccept(h.Get(hdrAccept)) {
ver := ac.Params["version"]
if ac.Type+"/"+ac.SubType == ProtoType && ac.Params["proto"] == ProtoProtocol {
switch ac.Params["encoding"] {
case "delimited":
return FmtProtoDelim
case "text":
return FmtProtoText
case "compact-text":
return FmtProtoCompact
}
}
if ac.Type == "text" && ac.SubType == "plain" && (ver == TextVersion || ver == "") {
return FmtText
}
if ac.Type+"/"+ac.SubType == OpenMetricsType && (ver == OpenMetricsVersion || ver == "") {
return FmtOpenMetrics
}
}
return FmtText
}
// NewEncoder returns a new encoder based on content type negotiation. All
// Encoder implementations returned by NewEncoder also implement Closer, and
// callers should always call the Close method. It is currently only required
// for FmtOpenMetrics, but a future (breaking) release will add the Close method
// to the Encoder interface directly. The current version of the Encoder
// interface is kept for backwards compatibility.
func NewEncoder(w io.Writer, format Format) Encoder {
switch format {
case FmtProtoDelim:
return encoder(func(v *dto.MetricFamily) error {
_, err := pbutil.WriteDelimited(w, v)
return err
})
return encoderCloser{
encode: func(v *dto.MetricFamily) error {
_, err := pbutil.WriteDelimited(w, v)
return err
},
close: func() error { return nil },
}
case FmtProtoCompact:
return encoder(func(v *dto.MetricFamily) error {
_, err := fmt.Fprintln(w, v.String())
return err
})
return encoderCloser{
encode: func(v *dto.MetricFamily) error {
_, err := fmt.Fprintln(w, v.String())
return err
},
close: func() error { return nil },
}
case FmtProtoText:
return encoder(func(v *dto.MetricFamily) error {
_, err := fmt.Fprintln(w, proto.MarshalTextString(v))
return err
})
return encoderCloser{
encode: func(v *dto.MetricFamily) error {
_, err := fmt.Fprintln(w, proto.MarshalTextString(v))
return err
},
close: func() error { return nil },
}
case FmtText:
return encoder(func(v *dto.MetricFamily) error {
_, err := MetricFamilyToText(w, v)
return err
})
return encoderCloser{
encode: func(v *dto.MetricFamily) error {
_, err := MetricFamilyToText(w, v)
return err
},
close: func() error { return nil },
}
case FmtOpenMetrics:
return encoderCloser{
encode: func(v *dto.MetricFamily) error {
_, err := MetricFamilyToOpenMetrics(w, v)
return err
},
close: func() error {
_, err := FinalizeOpenMetrics(w)
return err
},
}
}
panic("expfmt.NewEncoder: unknown format")
panic(fmt.Errorf("expfmt.NewEncoder: unknown format %q", format))
}

11
vendor/github.com/prometheus/common/expfmt/expfmt.go generated vendored
View File

@@ -19,10 +19,12 @@ type Format string
// Constants to assemble the Content-Type values for the different wire protocols.
const (
TextVersion = "0.0.4"
ProtoType = `application/vnd.google.protobuf`
ProtoProtocol = `io.prometheus.client.MetricFamily`
ProtoFmt = ProtoType + "; proto=" + ProtoProtocol + ";"
TextVersion = "0.0.4"
ProtoType = `application/vnd.google.protobuf`
ProtoProtocol = `io.prometheus.client.MetricFamily`
ProtoFmt = ProtoType + "; proto=" + ProtoProtocol + ";"
OpenMetricsType = `application/openmetrics-text`
OpenMetricsVersion = "0.0.1"
// The Content-Type values for the different wire protocols.
FmtUnknown Format = `<unknown>`
@@ -30,6 +32,7 @@ const (
FmtProtoDelim Format = ProtoFmt + ` encoding=delimited`
FmtProtoText Format = ProtoFmt + ` encoding=text`
FmtProtoCompact Format = ProtoFmt + ` encoding=compact-text`
FmtOpenMetrics Format = OpenMetricsType + `; version=` + OpenMetricsVersion + `; charset=utf-8`
)
const (

527
vendor/github.com/prometheus/common/expfmt/openmetrics_create.go generated vendored Normal file
View File

@@ -0,0 +1,527 @@
// Copyright 2020 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package expfmt
import (
"bufio"
"bytes"
"fmt"
"io"
"math"
"strconv"
"strings"
"github.com/golang/protobuf/ptypes"
"github.com/prometheus/common/model"
dto "github.com/prometheus/client_model/go"
)
// MetricFamilyToOpenMetrics converts a MetricFamily proto message into the
// OpenMetrics text format and writes the resulting lines to 'out'. It returns
// the number of bytes written and any error encountered. The output will have
// the same order as the input, no further sorting is performed. Furthermore,
// this function assumes the input is already sanitized and does not perform any
// sanity checks. If the input contains duplicate metrics or invalid metric or
// label names, the conversion will result in invalid text format output.
//
// This function fulfills the type 'expfmt.encoder'.
//
// Note that OpenMetrics requires a final `# EOF` line. Since this function acts
// on individual metric families, it is the responsibility of the caller to
// append this line to 'out' once all metric families have been written.
// Conveniently, this can be done by calling FinalizeOpenMetrics.
//
// The output should be fully OpenMetrics compliant. However, there are a few
// missing features and peculiarities to avoid complications when switching from
// Prometheus to OpenMetrics or vice versa:
//
// - Counters are expected to have the `_total` suffix in their metric name. In
// the output, the suffix will be truncated from the `# TYPE` and `# HELP`
// line. A counter with a missing `_total` suffix is not an error. However,
// its type will be set to `unknown` in that case to avoid invalid OpenMetrics
// output.
//
// - No support for the following (optional) features: `# UNIT` line, `_created`
// line, info type, stateset type, gaugehistogram type.
//
// - The size of exemplar labels is not checked (i.e. it's possible to create
// exemplars that are larger than allowed by the OpenMetrics specification).
//
// - The value of Counters is not checked. (OpenMetrics doesn't allow counters
// with a `NaN` value.)
func MetricFamilyToOpenMetrics(out io.Writer, in *dto.MetricFamily) (written int, err error) {
name := in.GetName()
if name == "" {
return 0, fmt.Errorf("MetricFamily has no name: %s", in)
}
// Try the interface upgrade. If it doesn't work, we'll use a
// bufio.Writer from the sync.Pool.
w, ok := out.(enhancedWriter)
if !ok {
b := bufPool.Get().(*bufio.Writer)
b.Reset(out)
w = b
defer func() {
bErr := b.Flush()
if err == nil {
err = bErr
}
bufPool.Put(b)
}()
}
var (
n int
metricType = in.GetType()
shortName = name
)
if metricType == dto.MetricType_COUNTER && strings.HasSuffix(shortName, "_total") {
shortName = name[:len(name)-6]
}
// Comments, first HELP, then TYPE.
if in.Help != nil {
n, err = w.WriteString("# HELP ")
written += n
if err != nil {
return
}
n, err = w.WriteString(shortName)
written += n
if err != nil {
return
}
err = w.WriteByte(' ')
written++
if err != nil {
return
}
n, err = writeEscapedString(w, *in.Help, true)
written += n
if err != nil {
return
}
err = w.WriteByte('\n')
written++
if err != nil {
return
}
}
n, err = w.WriteString("# TYPE ")
written += n
if err != nil {
return
}
n, err = w.WriteString(shortName)
written += n
if err != nil {
return
}
switch metricType {
case dto.MetricType_COUNTER:
if strings.HasSuffix(name, "_total") {
n, err = w.WriteString(" counter\n")
} else {
n, err = w.WriteString(" unknown\n")
}
case dto.MetricType_GAUGE:
n, err = w.WriteString(" gauge\n")
case dto.MetricType_SUMMARY:
n, err = w.WriteString(" summary\n")
case dto.MetricType_UNTYPED:
n, err = w.WriteString(" unknown\n")
case dto.MetricType_HISTOGRAM:
n, err = w.WriteString(" histogram\n")
default:
return written, fmt.Errorf("unknown metric type %s", metricType.String())
}
written += n
if err != nil {
return
}
// Finally the samples, one line for each.
for _, metric := range in.Metric {
switch metricType {
case dto.MetricType_COUNTER:
if metric.Counter == nil {
return written, fmt.Errorf(
"expected counter in metric %s %s", name, metric,
)
}
// Note that we have ensured above that either the name
// ends on `_total` or that the rendered type is
// `unknown`. Therefore, no `_total` must be added here.
n, err = writeOpenMetricsSample(
w, name, "", metric, "", 0,
metric.Counter.GetValue(), 0, false,
metric.Counter.Exemplar,
)
case dto.MetricType_GAUGE:
if metric.Gauge == nil {
return written, fmt.Errorf(
"expected gauge in metric %s %s", name, metric,
)
}
n, err = writeOpenMetricsSample(
w, name, "", metric, "", 0,
metric.Gauge.GetValue(), 0, false,
nil,
)
case dto.MetricType_UNTYPED:
if metric.Untyped == nil {
return written, fmt.Errorf(
"expected untyped in metric %s %s", name, metric,
)
}
n, err = writeOpenMetricsSample(
w, name, "", metric, "", 0,
metric.Untyped.GetValue(), 0, false,
nil,
)
case dto.MetricType_SUMMARY:
if metric.Summary == nil {
return written, fmt.Errorf(
"expected summary in metric %s %s", name, metric,
)
}
for _, q := range metric.Summary.Quantile {
n, err = writeOpenMetricsSample(
w, name, "", metric,
model.QuantileLabel, q.GetQuantile(),
q.GetValue(), 0, false,
nil,
)
written += n
if err != nil {
return
}
}
n, err = writeOpenMetricsSample(
w, name, "_sum", metric, "", 0,
metric.Summary.GetSampleSum(), 0, false,
nil,
)
written += n
if err != nil {
return
}
n, err = writeOpenMetricsSample(
w, name, "_count", metric, "", 0,
0, metric.Summary.GetSampleCount(), true,
nil,
)
case dto.MetricType_HISTOGRAM:
if metric.Histogram == nil {
return written, fmt.Errorf(
"expected histogram in metric %s %s", name, metric,
)
}
infSeen := false
for _, b := range metric.Histogram.Bucket {
n, err = writeOpenMetricsSample(
w, name, "_bucket", metric,
model.BucketLabel, b.GetUpperBound(),
0, b.GetCumulativeCount(), true,
b.Exemplar,
)
written += n
if err != nil {
return
}
if math.IsInf(b.GetUpperBound(), +1) {
infSeen = true
}
}
if !infSeen {
n, err = writeOpenMetricsSample(
w, name, "_bucket", metric,
model.BucketLabel, math.Inf(+1),
0, metric.Histogram.GetSampleCount(), true,
nil,
)
written += n
if err != nil {
return
}
}
n, err = writeOpenMetricsSample(
w, name, "_sum", metric, "", 0,
metric.Histogram.GetSampleSum(), 0, false,
nil,
)
written += n
if err != nil {
return
}
n, err = writeOpenMetricsSample(
w, name, "_count", metric, "", 0,
0, metric.Histogram.GetSampleCount(), true,
nil,
)
default:
return written, fmt.Errorf(
"unexpected type in metric %s %s", name, metric,
)
}
written += n
if err != nil {
return
}
}
return
}
// FinalizeOpenMetrics writes the final `# EOF\n` line required by OpenMetrics.
func FinalizeOpenMetrics(w io.Writer) (written int, err error) {
return w.Write([]byte("# EOF\n"))
}
// writeOpenMetricsSample writes a single sample in OpenMetrics text format to
// w, given the metric name, the metric proto message itself, optionally an
// additional label name with a float64 value (use empty string as label name if
// not required), the value (optionally as float64 or uint64, determined by
// useIntValue), and optionally an exemplar (use nil if not required). The
// function returns the number of bytes written and any error encountered.
func writeOpenMetricsSample(
w enhancedWriter,
name, suffix string,
metric *dto.Metric,
additionalLabelName string, additionalLabelValue float64,
floatValue float64, intValue uint64, useIntValue bool,
exemplar *dto.Exemplar,
) (int, error) {
var written int
n, err := w.WriteString(name)
written += n
if err != nil {
return written, err
}
if suffix != "" {
n, err = w.WriteString(suffix)
written += n
if err != nil {
return written, err
}
}
n, err = writeOpenMetricsLabelPairs(
w, metric.Label, additionalLabelName, additionalLabelValue,
)
written += n
if err != nil {
return written, err
}
err = w.WriteByte(' ')
written++
if err != nil {
return written, err
}
if useIntValue {
n, err = writeUint(w, intValue)
} else {
n, err = writeOpenMetricsFloat(w, floatValue)
}
written += n
if err != nil {
return written, err
}
if metric.TimestampMs != nil {
err = w.WriteByte(' ')
written++
if err != nil {
return written, err
}
// TODO(beorn7): Format this directly without converting to a float first.
n, err = writeOpenMetricsFloat(w, float64(*metric.TimestampMs)/1000)
written += n
if err != nil {
return written, err
}
}
if exemplar != nil {
n, err = writeExemplar(w, exemplar)
written += n
if err != nil {
return written, err
}
}
err = w.WriteByte('\n')
written++
if err != nil {
return written, err
}
return written, nil
}
// writeOpenMetricsLabelPairs works like writeOpenMetrics but formats the float
// in OpenMetrics style.
func writeOpenMetricsLabelPairs(
w enhancedWriter,
in []*dto.LabelPair,
additionalLabelName string, additionalLabelValue float64,
) (int, error) {
if len(in) == 0 && additionalLabelName == "" {
return 0, nil
}
var (
written int
separator byte = '{'
)
for _, lp := range in {
err := w.WriteByte(separator)
written++
if err != nil {
return written, err
}
n, err := w.WriteString(lp.GetName())
written += n
if err != nil {
return written, err
}
n, err = w.WriteString(`="`)
written += n
if err != nil {
return written, err
}
n, err = writeEscapedString(w, lp.GetValue(), true)
written += n
if err != nil {
return written, err
}
err = w.WriteByte('"')
written++
if err != nil {
return written, err
}
separator = ','
}
if additionalLabelName != "" {
err := w.WriteByte(separator)
written++
if err != nil {
return written, err
}
n, err := w.WriteString(additionalLabelName)
written += n
if err != nil {
return written, err
}
n, err = w.WriteString(`="`)
written += n
if err != nil {
return written, err
}
n, err = writeOpenMetricsFloat(w, additionalLabelValue)
written += n
if err != nil {
return written, err
}
err = w.WriteByte('"')
written++
if err != nil {
return written, err
}
}
err := w.WriteByte('}')
written++
if err != nil {
return written, err
}
return written, nil
}
// writeExemplar writes the provided exemplar in OpenMetrics format to w. The
// function returns the number of bytes written and any error encountered.
func writeExemplar(w enhancedWriter, e *dto.Exemplar) (int, error) {
written := 0
n, err := w.WriteString(" # ")
written += n
if err != nil {
return written, err
}
n, err = writeOpenMetricsLabelPairs(w, e.Label, "", 0)
written += n
if err != nil {
return written, err
}
err = w.WriteByte(' ')
written++
if err != nil {
return written, err
}
n, err = writeOpenMetricsFloat(w, e.GetValue())
written += n
if err != nil {
return written, err
}
if e.Timestamp != nil {
err = w.WriteByte(' ')
written++
if err != nil {
return written, err
}
ts, err := ptypes.Timestamp((*e).Timestamp)
if err != nil {
return written, err
}
// TODO(beorn7): Format this directly from components of ts to
// avoid overflow/underflow and precision issues of the float
// conversion.
n, err = writeOpenMetricsFloat(w, float64(ts.UnixNano())/1e9)
written += n
if err != nil {
return written, err
}
}
return written, nil
}
// writeOpenMetricsFloat works like writeFloat but appends ".0" if the resulting
// number would otherwise contain neither a "." nor an "e".
func writeOpenMetricsFloat(w enhancedWriter, f float64) (int, error) {
switch {
case f == 1:
return w.WriteString("1.0")
case f == 0:
return w.WriteString("0.0")
case f == -1:
return w.WriteString("-1.0")
case math.IsNaN(f):
return w.WriteString("NaN")
case math.IsInf(f, +1):
return w.WriteString("+Inf")
case math.IsInf(f, -1):
return w.WriteString("-Inf")
default:
bp := numBufPool.Get().(*[]byte)
*bp = strconv.AppendFloat((*bp)[:0], f, 'g', -1, 64)
if !bytes.ContainsAny(*bp, "e.") {
*bp = append(*bp, '.', '0')
}
written, err := w.Write(*bp)
numBufPool.Put(bp)
return written, err
}
}
// writeUint is like writeInt just for uint64.
func writeUint(w enhancedWriter, u uint64) (int, error) {
bp := numBufPool.Get().(*[]byte)
*bp = strconv.AppendUint((*bp)[:0], u, 10)
written, err := w.Write(*bp)
numBufPool.Put(bp)
return written, err
}

21
vendor/github.com/prometheus/common/expfmt/text_create.go generated vendored
View File

@@ -14,9 +14,10 @@
package expfmt
import (
"bytes"
"bufio"
"fmt"
"io"
"io/ioutil"
"math"
"strconv"
"strings"
@@ -27,7 +28,7 @@ import (
dto "github.com/prometheus/client_model/go"
)
// enhancedWriter has all the enhanced write functions needed here. bytes.Buffer
// enhancedWriter has all the enhanced write functions needed here. bufio.Writer
// implements it.
type enhancedWriter interface {
io.Writer
@@ -37,14 +38,13 @@ type enhancedWriter interface {
}
const (
initialBufSize = 512
initialNumBufSize = 24
)
var (
bufPool = sync.Pool{
New: func() interface{} {
return bytes.NewBuffer(make([]byte, 0, initialBufSize))
return bufio.NewWriter(ioutil.Discard)
},
}
numBufPool = sync.Pool{
@@ -75,16 +75,14 @@ func MetricFamilyToText(out io.Writer, in *dto.MetricFamily) (written int, err e
}
// Try the interface upgrade. If it doesn't work, we'll use a
// bytes.Buffer from the sync.Pool and write out its content to out in a
// single go in the end.
// bufio.Writer from the sync.Pool.
w, ok := out.(enhancedWriter)
if !ok {
b := bufPool.Get().(*bytes.Buffer)
b.Reset()
b := bufPool.Get().(*bufio.Writer)
b.Reset(out)
w = b
defer func() {
bWritten, bErr := out.Write(b.Bytes())
written = bWritten
bErr := b.Flush()
if err == nil {
err = bErr
}
@@ -425,9 +423,8 @@ var (
func writeEscapedString(w enhancedWriter, v string, includeDoubleQuote bool) (int, error) {
if includeDoubleQuote {
return quotedEscaper.WriteString(w, v)
} else {
return escaper.WriteString(w, v)
}
return escaper.WriteString(w, v)
}
// writeFloat is equivalent to fmt.Fprint with a float64 argument but hardcodes

13
vendor/github.com/prometheus/common/expfmt/text_parse.go generated vendored
View File

@@ -325,7 +325,7 @@ func (p *TextParser) startLabelValue() stateFn {
// - Other labels have to be added to currentLabels for signature calculation.
if p.currentMF.GetType() == dto.MetricType_SUMMARY {
if p.currentLabelPair.GetName() == model.QuantileLabel {
if p.currentQuantile, p.err = strconv.ParseFloat(p.currentLabelPair.GetValue(), 64); p.err != nil {
if p.currentQuantile, p.err = parseFloat(p.currentLabelPair.GetValue()); p.err != nil {
// Create a more helpful error message.
p.parseError(fmt.Sprintf("expected float as value for 'quantile' label, got %q", p.currentLabelPair.GetValue()))
return nil
@@ -337,7 +337,7 @@ func (p *TextParser) startLabelValue() stateFn {
// Similar special treatment of histograms.
if p.currentMF.GetType() == dto.MetricType_HISTOGRAM {
if p.currentLabelPair.GetName() == model.BucketLabel {
if p.currentBucket, p.err = strconv.ParseFloat(p.currentLabelPair.GetValue(), 64); p.err != nil {
if p.currentBucket, p.err = parseFloat(p.currentLabelPair.GetValue()); p.err != nil {
// Create a more helpful error message.
p.parseError(fmt.Sprintf("expected float as value for 'le' label, got %q", p.currentLabelPair.GetValue()))
return nil
@@ -392,7 +392,7 @@ func (p *TextParser) readingValue() stateFn {
if p.readTokenUntilWhitespace(); p.err != nil {
return nil // Unexpected end of input.
}
value, err := strconv.ParseFloat(p.currentToken.String(), 64)
value, err := parseFloat(p.currentToken.String())
if err != nil {
// Create a more helpful error message.
p.parseError(fmt.Sprintf("expected float as value, got %q", p.currentToken.String()))
@@ -755,3 +755,10 @@ func histogramMetricName(name string) string {
return name
}
}
func parseFloat(s string) (float64, error) {
if strings.ContainsAny(s, "pP_") {
return 0, fmt.Errorf("unsupported character in float")
}
return strconv.ParseFloat(s, 64)
}

2
vendor/github.com/prometheus/procfs/.golangci.yml generated vendored
View File

@@ -1,6 +1,4 @@
# Run only staticcheck for now. Additional linters will be enabled one-by-one.
linters:
enable:
- staticcheck
- govet
disable-all: true

109
vendor/github.com/prometheus/procfs/CONTRIBUTING.md generated vendored
View File

@@ -2,17 +2,120 @@
Prometheus uses GitHub to manage reviews of pull requests.
* If you are a new contributor see: [Steps to Contribute](#steps-to-contribute)
* If you have a trivial fix or improvement, go ahead and create a pull request,
addressing (with `@...`) the maintainer of this repository (see
addressing (with `@...`) a suitable maintainer of this repository (see
[MAINTAINERS.md](MAINTAINERS.md)) in the description of the pull request.
* If you plan to do something more involved, first discuss your ideas
on our [mailing list](https://groups.google.com/forum/?fromgroups#!forum/prometheus-developers).
This will avoid unnecessary work and surely give you and us a good deal
of inspiration.
of inspiration. Also please see our [non-goals issue](https://github.com/prometheus/docs/issues/149) on areas that the Prometheus community doesn't plan to work on.
* Relevant coding style guidelines are the [Go Code Review
Comments](https://code.google.com/p/go-wiki/wiki/CodeReviewComments)
and the _Formatting and style_ section of Peter Bourgon's [Go: Best
Practices for Production
Environments](http://peter.bourgon.org/go-in-production/#formatting-and-style).
Environments](https://peter.bourgon.org/go-in-production/#formatting-and-style).
* Be sure to sign off on the [DCO](https://github.com/probot/dco#how-it-works)
## Steps to Contribute
Should you wish to work on an issue, please claim it first by commenting on the GitHub issue that you want to work on it. This is to prevent duplicated efforts from contributors on the same issue.
Please check the [`help-wanted`](https://github.com/prometheus/procfs/issues?q=is%3Aissue+is%3Aopen+label%3A%22help+wanted%22) label to find issues that are good for getting started. If you have questions about one of the issues, with or without the tag, please comment on them and one of the maintainers will clarify it. For a quicker response, contact us over [IRC](https://prometheus.io/community).
For quickly compiling and testing your changes do:
```
make test # Make sure all the tests pass before you commit and push :)
```
We use [`golangci-lint`](https://github.com/golangci/golangci-lint) for linting the code. If it reports an issue and you think that the warning needs to be disregarded or is a false-positive, you can add a special comment `//nolint:linter1[,linter2,...]` before the offending line. Use this sparingly though, fixing the code to comply with the linter's recommendation is in general the preferred course of action.
## Pull Request Checklist
* Branch from the master branch and, if needed, rebase to the current master branch before submitting your pull request. If it doesn't merge cleanly with master you may be asked to rebase your changes.
* Commits should be as small as possible, while ensuring that each commit is correct independently (i.e., each commit should compile and pass tests).
* If your patch is not getting reviewed or you need a specific person to review it, you can @-reply a reviewer asking for a review in the pull request or a comment, or you can ask for a review on IRC channel [#prometheus](https://webchat.freenode.net/?channels=#prometheus) on irc.freenode.net (for the easiest start, [join via Riot](https://riot.im/app/#/room/#prometheus:matrix.org)).
* Add tests relevant to the fixed bug or new feature.
## Dependency management
The Prometheus project uses [Go modules](https://golang.org/cmd/go/#hdr-Modules__module_versions__and_more) to manage dependencies on external packages. This requires a working Go environment with version 1.12 or greater installed.
All dependencies are vendored in the `vendor/` directory.
To add or update a new dependency, use the `go get` command:
```bash
# Pick the latest tagged release.
go get example.com/some/module/pkg
# Pick a specific version.
go get example.com/some/module/pkg@vX.Y.Z
```
Tidy up the `go.mod` and `go.sum` files and copy the new/updated dependency to the `vendor/` directory:
```bash
# The GO111MODULE variable can be omitted when the code isn't located in GOPATH.
GO111MODULE=on go mod tidy
GO111MODULE=on go mod vendor
```
You have to commit the changes to `go.mod`, `go.sum` and the `vendor/` directory before submitting the pull request.
## API Implementation Guidelines
### Naming and Documentation
Public functions and structs should normally be named according to the file(s) being read and parsed. For example,
the `fs.BuddyInfo()` function reads the file `/proc/buddyinfo`. In addition, the godoc for each public function
should contain the path to the file(s) being read and a URL of the linux kernel documentation describing the file(s).
### Reading vs. Parsing
Most functionality in this library consists of reading files and then parsing the text into structured data. In most
cases reading and parsing should be separated into different functions/methods with a public `fs.Thing()` method and
a private `parseThing(r Reader)` function. This provides a logical separation and allows parsing to be tested
directly without the need to read from the filesystem. Using a `Reader` argument is preferred over other data types
such as `string` or `*File` because it provides the most flexibility regarding the data source. When a set of files
in a directory needs to be parsed, then a `path` string parameter to the parse function can be used instead.
### /proc and /sys filesystem I/O
The `proc` and `sys` filesystems are pseudo file systems and work a bit differently from standard disk I/O.
Many of the files are changing continuously and the data being read can in some cases change between subsequent
reads in the same file. Also, most of the files are relatively small (less than a few KBs), and system calls
to the `stat` function will often return the wrong size. Therefore, for most files it's recommended to read the
full file in a single operation using an internal utility function called `util.ReadFileNoStat`.
This function is similar to `ioutil.ReadFile`, but it avoids the system call to `stat` to get the current size of
the file.
Note that parsing the file's contents can still be performed one line at a time. This is done by first reading
the full file, and then using a scanner on the `[]byte` or `string` containing the data.
```
data, err := util.ReadFileNoStat("/proc/cpuinfo")
if err != nil {
return err
}
reader := bytes.NewReader(data)
scanner := bufio.NewScanner(reader)
```
The `/sys` filesystem contains many very small files which contain only a single numeric or text value. These files
can be read using an internal function called `util.SysReadFile` which is similar to `ioutil.ReadFile` but does
not bother to check the size of the file before reading.
```
data, err := util.SysReadFile("/sys/class/power_supply/BAT0/capacity")
```

16
vendor/github.com/prometheus/procfs/README.md generated vendored
View File

@@ -1,6 +1,6 @@
# procfs
This procfs package provides functions to retrieve system, kernel and process
This package provides functions to retrieve system, kernel, and process
metrics from the pseudo-filesystems /proc and /sys.
*WARNING*: This package is a work in progress. Its API may still break in
@@ -13,7 +13,8 @@ backwards-incompatible ways without warnings. Use it at your own risk.
## Usage
The procfs library is organized by packages based on whether the gathered data is coming from
/proc, /sys, or both. Each package contains an `FS` type which represents the path to either /proc, /sys, or both. For example, current cpu statistics are gathered from
/proc, /sys, or both. Each package contains an `FS` type which represents the path to either /proc,
/sys, or both. For example, cpu statistics are gathered from
`/proc/stat` and are available via the root procfs package. First, the proc filesystem mount
point is initialized, and then the stat information is read.
@@ -29,10 +30,17 @@ Some sub-packages such as `blockdevice`, require access to both the proc and sys
stats, err := fs.ProcDiskstats()
```
## Package Organization
The packages in this project are organized according to (1) whether the data comes from the `/proc` or
`/sys` filesystem and (2) the type of information being retrieved. For example, most process information
can be gathered from the functions in the root `procfs` package. Information about block devices such as disk drives
is available in the `blockdevices` sub-package.
## Building and Testing
The procfs library is normally built as part of another application. However, when making
changes to the library, the `make test` command can be used to run the API test suite.
The procfs library is intended to be built as part of another application, so there are no distributable binaries.
However, most of the API includes unit tests which can be run with `make test`.
### Updating Test Fixtures

85
vendor/github.com/prometheus/procfs/arp.go generated vendored Normal file
View File

@@ -0,0 +1,85 @@
// Copyright 2019 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package procfs
import (
"fmt"
"io/ioutil"
"net"
"strings"
)
// ARPEntry contains a single row of the columnar data represented in
// /proc/net/arp.
type ARPEntry struct {
// IP address
IPAddr net.IP
// MAC address
HWAddr net.HardwareAddr
// Name of the device
Device string
}
// GatherARPEntries retrieves all the ARP entries, parse the relevant columns,
// and then return a slice of ARPEntry's.
func (fs FS) GatherARPEntries() ([]ARPEntry, error) {
data, err := ioutil.ReadFile(fs.proc.Path("net/arp"))
if err != nil {
return nil, fmt.Errorf("error reading arp %s: %s", fs.proc.Path("net/arp"), err)
}
return parseARPEntries(data)
}
func parseARPEntries(data []byte) ([]ARPEntry, error) {
lines := strings.Split(string(data), "\n")
entries := make([]ARPEntry, 0)
var err error
const (
expectedDataWidth = 6
expectedHeaderWidth = 9
)
for _, line := range lines {
columns := strings.Fields(line)
width := len(columns)
if width == expectedHeaderWidth || width == 0 {
continue
} else if width == expectedDataWidth {
entry, err := parseARPEntry(columns)
if err != nil {
return []ARPEntry{}, fmt.Errorf("failed to parse ARP entry: %s", err)
}
entries = append(entries, entry)
} else {
return []ARPEntry{}, fmt.Errorf("%d columns were detected, but %d were expected", width, expectedDataWidth)
}
}
return entries, err
}
func parseARPEntry(columns []string) (ARPEntry, error) {
ip := net.ParseIP(columns[0])
mac := net.HardwareAddr(columns[3])
entry := ARPEntry{
IPAddr: ip,
HWAddr: mac,
Device: columns[5],
}
return entry, nil
}

2
vendor/github.com/prometheus/procfs/buddyinfo.go generated vendored
View File

@@ -31,7 +31,7 @@ type BuddyInfo struct {
Sizes []float64
}
// NewBuddyInfo reads the buddyinfo statistics from the specified `proc` filesystem.
// BuddyInfo reads the buddyinfo statistics from the specified `proc` filesystem.
func (fs FS) BuddyInfo() ([]BuddyInfo, error) {
file, err := os.Open(fs.proc.Path("buddyinfo"))
if err != nil {

167
vendor/github.com/prometheus/procfs/cpuinfo.go generated vendored Normal file
View File

@@ -0,0 +1,167 @@
// Copyright 2019 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package procfs
import (
"bufio"
"bytes"
"strconv"
"strings"
"github.com/prometheus/procfs/internal/util"
)
// CPUInfo contains general information about a system CPU found in /proc/cpuinfo
type CPUInfo struct {
Processor uint
VendorID string
CPUFamily string
Model string
ModelName string
Stepping string
Microcode string
CPUMHz float64
CacheSize string
PhysicalID string
Siblings uint
CoreID string
CPUCores uint
APICID string
InitialAPICID string
FPU string
FPUException string
CPUIDLevel uint
WP string
Flags []string
Bugs []string
BogoMips float64
CLFlushSize uint
CacheAlignment uint
AddressSizes string
PowerManagement string
}
// CPUInfo returns information about current system CPUs.
// See https://www.kernel.org/doc/Documentation/filesystems/proc.txt
func (fs FS) CPUInfo() ([]CPUInfo, error) {
data, err := util.ReadFileNoStat(fs.proc.Path("cpuinfo"))
if err != nil {
return nil, err
}
return parseCPUInfo(data)
}
// parseCPUInfo parses data from /proc/cpuinfo
func parseCPUInfo(info []byte) ([]CPUInfo, error) {
cpuinfo := []CPUInfo{}
i := -1
scanner := bufio.NewScanner(bytes.NewReader(info))
for scanner.Scan() {
line := scanner.Text()
if strings.TrimSpace(line) == "" {
continue
}
field := strings.SplitN(line, ": ", 2)
switch strings.TrimSpace(field[0]) {
case "processor":
cpuinfo = append(cpuinfo, CPUInfo{}) // start of the next processor
i++
v, err := strconv.ParseUint(field[1], 0, 32)
if err != nil {
return nil, err
}
cpuinfo[i].Processor = uint(v)
case "vendor_id":
cpuinfo[i].VendorID = field[1]
case "cpu family":
cpuinfo[i].CPUFamily = field[1]
case "model":
cpuinfo[i].Model = field[1]
case "model name":
cpuinfo[i].ModelName = field[1]
case "stepping":
cpuinfo[i].Stepping = field[1]
case "microcode":
cpuinfo[i].Microcode = field[1]
case "cpu MHz":
v, err := strconv.ParseFloat(field[1], 64)
if err != nil {
return nil, err
}
cpuinfo[i].CPUMHz = v
case "cache size":
cpuinfo[i].CacheSize = field[1]
case "physical id":
cpuinfo[i].PhysicalID = field[1]
case "siblings":
v, err := strconv.ParseUint(field[1], 0, 32)
if err != nil {
return nil, err
}
cpuinfo[i].Siblings = uint(v)
case "core id":
cpuinfo[i].CoreID = field[1]
case "cpu cores":
v, err := strconv.ParseUint(field[1], 0, 32)
if err != nil {
return nil, err
}
cpuinfo[i].CPUCores = uint(v)
case "apicid":
cpuinfo[i].APICID = field[1]
case "initial apicid":
cpuinfo[i].InitialAPICID = field[1]
case "fpu":
cpuinfo[i].FPU = field[1]
case "fpu_exception":
cpuinfo[i].FPUException = field[1]
case "cpuid level":
v, err := strconv.ParseUint(field[1], 0, 32)
if err != nil {
return nil, err
}
cpuinfo[i].CPUIDLevel = uint(v)
case "wp":
cpuinfo[i].WP = field[1]
case "flags":
cpuinfo[i].Flags = strings.Fields(field[1])
case "bugs":
cpuinfo[i].Bugs = strings.Fields(field[1])
case "bogomips":
v, err := strconv.ParseFloat(field[1], 64)
if err != nil {
return nil, err
}
cpuinfo[i].BogoMips = v
case "clflush size":
v, err := strconv.ParseUint(field[1], 0, 32)
if err != nil {
return nil, err
}
cpuinfo[i].CLFlushSize = uint(v)
case "cache_alignment":
v, err := strconv.ParseUint(field[1], 0, 32)
if err != nil {
return nil, err
}
cpuinfo[i].CacheAlignment = uint(v)
case "address sizes":
cpuinfo[i].AddressSizes = field[1]
case "power management":
cpuinfo[i].PowerManagement = field[1]
}
}
return cpuinfo, nil
}

131
vendor/github.com/prometheus/procfs/crypto.go generated vendored Normal file
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@@ -0,0 +1,131 @@
// Copyright 2019 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package procfs
import (
"bytes"
"fmt"
"io/ioutil"
"strconv"
"strings"
"github.com/prometheus/procfs/internal/util"
)
// Crypto holds info parsed from /proc/crypto.
type Crypto struct {
Alignmask *uint64
Async bool
Blocksize *uint64
Chunksize *uint64
Ctxsize *uint64
Digestsize *uint64
Driver string
Geniv string
Internal string
Ivsize *uint64
Maxauthsize *uint64
MaxKeysize *uint64
MinKeysize *uint64
Module string
Name string
Priority *int64
Refcnt *int64
Seedsize *uint64
Selftest string
Type string
Walksize *uint64
}
// Crypto parses an crypto-file (/proc/crypto) and returns a slice of
// structs containing the relevant info. More information available here:
// https://kernel.readthedocs.io/en/sphinx-samples/crypto-API.html
func (fs FS) Crypto() ([]Crypto, error) {
data, err := ioutil.ReadFile(fs.proc.Path("crypto"))
if err != nil {
return nil, fmt.Errorf("error parsing crypto %s: %s", fs.proc.Path("crypto"), err)
}
crypto, err := parseCrypto(data)
if err != nil {
return nil, fmt.Errorf("error parsing crypto %s: %s", fs.proc.Path("crypto"), err)
}
return crypto, nil
}
func parseCrypto(cryptoData []byte) ([]Crypto, error) {
crypto := []Crypto{}
cryptoBlocks := bytes.Split(cryptoData, []byte("\n\n"))
for _, block := range cryptoBlocks {
var newCryptoElem Crypto
lines := strings.Split(string(block), "\n")
for _, line := range lines {
if strings.TrimSpace(line) == "" || line[0] == ' ' {
continue
}
fields := strings.Split(line, ":")
key := strings.TrimSpace(fields[0])
value := strings.TrimSpace(fields[1])
vp := util.NewValueParser(value)
switch strings.TrimSpace(key) {
case "async":
b, err := strconv.ParseBool(value)
if err == nil {
newCryptoElem.Async = b
}
case "blocksize":
newCryptoElem.Blocksize = vp.PUInt64()
case "chunksize":
newCryptoElem.Chunksize = vp.PUInt64()
case "digestsize":
newCryptoElem.Digestsize = vp.PUInt64()
case "driver":
newCryptoElem.Driver = value
case "geniv":
newCryptoElem.Geniv = value
case "internal":
newCryptoElem.Internal = value
case "ivsize":
newCryptoElem.Ivsize = vp.PUInt64()
case "maxauthsize":
newCryptoElem.Maxauthsize = vp.PUInt64()
case "max keysize":
newCryptoElem.MaxKeysize = vp.PUInt64()
case "min keysize":
newCryptoElem.MinKeysize = vp.PUInt64()
case "module":
newCryptoElem.Module = value
case "name":
newCryptoElem.Name = value
case "priority":
newCryptoElem.Priority = vp.PInt64()
case "refcnt":
newCryptoElem.Refcnt = vp.PInt64()
case "seedsize":
newCryptoElem.Seedsize = vp.PUInt64()
case "selftest":
newCryptoElem.Selftest = value
case "type":
newCryptoElem.Type = value
case "walksize":
newCryptoElem.Walksize = vp.PUInt64()
}
}
crypto = append(crypto, newCryptoElem)
}
return crypto, nil
}

3227
vendor/github.com/prometheus/procfs/fixtures.ttar generated vendored
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File diff suppressed because it is too large Load Diff

6
vendor/github.com/prometheus/procfs/go.mod generated vendored
View File

@@ -1,6 +1,8 @@
module github.com/prometheus/procfs
go 1.12
require (
github.com/google/go-cmp v0.3.0
golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4
github.com/google/go-cmp v0.3.1
golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e
)

8
vendor/github.com/prometheus/procfs/go.sum generated vendored
View File

@@ -1,4 +1,4 @@
github.com/google/go-cmp v0.3.0 h1:crn/baboCvb5fXaQ0IJ1SGTsTVrWpDsCWC8EGETZijY=
github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4 h1:YUO/7uOKsKeq9UokNS62b8FYywz3ker1l1vDZRCRefw=
golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
github.com/google/go-cmp v0.3.1 h1:Xye71clBPdm5HgqGwUkwhbynsUJZhDbS20FvLhQ2izg=
github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e h1:vcxGaoTs7kV8m5Np9uUNQin4BrLOthgV7252N8V+FwY=
golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=

2
vendor/github.com/prometheus/procfs/internal/fs/fs.go generated vendored
View File

@@ -26,7 +26,7 @@ const (
// DefaultSysMountPoint is the common mount point of the sys filesystem.
DefaultSysMountPoint = "/sys"
// DefaultConfigfsMountPoint is the commont mount point of the configfs
// DefaultConfigfsMountPoint is the common mount point of the configfs
DefaultConfigfsMountPoint = "/sys/kernel/config"
)

88
vendor/github.com/prometheus/procfs/internal/util/parse.go generated vendored Normal file
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@@ -0,0 +1,88 @@
// Copyright 2018 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package util
import (
"io/ioutil"
"strconv"
"strings"
)
// ParseUint32s parses a slice of strings into a slice of uint32s.
func ParseUint32s(ss []string) ([]uint32, error) {
us := make([]uint32, 0, len(ss))
for _, s := range ss {
u, err := strconv.ParseUint(s, 10, 32)
if err != nil {
return nil, err
}
us = append(us, uint32(u))
}
return us, nil
}
// ParseUint64s parses a slice of strings into a slice of uint64s.
func ParseUint64s(ss []string) ([]uint64, error) {
us := make([]uint64, 0, len(ss))
for _, s := range ss {
u, err := strconv.ParseUint(s, 10, 64)
if err != nil {
return nil, err
}
us = append(us, u)
}
return us, nil
}
// ParsePInt64s parses a slice of strings into a slice of int64 pointers.
func ParsePInt64s(ss []string) ([]*int64, error) {
us := make([]*int64, 0, len(ss))
for _, s := range ss {
u, err := strconv.ParseInt(s, 10, 64)
if err != nil {
return nil, err
}
us = append(us, &u)
}
return us, nil
}
// ReadUintFromFile reads a file and attempts to parse a uint64 from it.
func ReadUintFromFile(path string) (uint64, error) {
data, err := ioutil.ReadFile(path)
if err != nil {
return 0, err
}
return strconv.ParseUint(strings.TrimSpace(string(data)), 10, 64)
}
// ParseBool parses a string into a boolean pointer.
func ParseBool(b string) *bool {
var truth bool
switch b {
case "enabled":
truth = true
case "disabled":
truth = false
default:
return nil
}
return &truth
}

38
vendor/github.com/prometheus/procfs/internal/util/readfile.go generated vendored Normal file
View File

@@ -0,0 +1,38 @@
// Copyright 2019 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package util
import (
"io"
"io/ioutil"
"os"
)
// ReadFileNoStat uses ioutil.ReadAll to read contents of entire file.
// This is similar to ioutil.ReadFile but without the call to os.Stat, because
// many files in /proc and /sys report incorrect file sizes (either 0 or 4096).
// Reads a max file size of 512kB. For files larger than this, a scanner
// should be used.
func ReadFileNoStat(filename string) ([]byte, error) {
const maxBufferSize = 1024 * 512
f, err := os.Open(filename)
if err != nil {
return nil, err
}
defer f.Close()
reader := io.LimitReader(f, maxBufferSize)
return ioutil.ReadAll(reader)
}

48
vendor/github.com/prometheus/procfs/internal/util/sysreadfile.go generated vendored Normal file
View File

@@ -0,0 +1,48 @@
// Copyright 2018 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build linux,!appengine
package util
import (
"bytes"
"os"
"syscall"
)
// SysReadFile is a simplified ioutil.ReadFile that invokes syscall.Read directly.
// https://github.com/prometheus/node_exporter/pull/728/files
//
// Note that this function will not read files larger than 128 bytes.
func SysReadFile(file string) (string, error) {
f, err := os.Open(file)
if err != nil {
return "", err
}
defer f.Close()
// On some machines, hwmon drivers are broken and return EAGAIN. This causes
// Go's ioutil.ReadFile implementation to poll forever.
//
// Since we either want to read data or bail immediately, do the simplest
// possible read using syscall directly.
const sysFileBufferSize = 128
b := make([]byte, sysFileBufferSize)
n, err := syscall.Read(int(f.Fd()), b)
if err != nil {
return "", err
}
return string(bytes.TrimSpace(b[:n])), nil
}

26
vendor/github.com/prometheus/procfs/internal/util/sysreadfile_compat.go generated vendored Normal file
View File

@@ -0,0 +1,26 @@
// Copyright 2019 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build linux,appengine !linux
package util
import (
"fmt"
)
// SysReadFile is here implemented as a noop for builds that do not support
// the read syscall. For example Windows, or Linux on Google App Engine.
func SysReadFile(file string) (string, error) {
return "", fmt.Errorf("not supported on this platform")
}

91
vendor/github.com/prometheus/procfs/internal/util/valueparser.go generated vendored Normal file
View File

@@ -0,0 +1,91 @@
// Copyright 2019 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package util
import (
"strconv"
)
// TODO(mdlayher): util packages are an anti-pattern and this should be moved
// somewhere else that is more focused in the future.
// A ValueParser enables parsing a single string into a variety of data types
// in a concise and safe way. The Err method must be invoked after invoking
// any other methods to ensure a value was successfully parsed.
type ValueParser struct {
v string
err error
}
// NewValueParser creates a ValueParser using the input string.
func NewValueParser(v string) *ValueParser {
return &ValueParser{v: v}
}
// Int interprets the underlying value as an int and returns that value.
func (vp *ValueParser) Int() int { return int(vp.int64()) }
// PInt64 interprets the underlying value as an int64 and returns a pointer to
// that value.
func (vp *ValueParser) PInt64() *int64 {
if vp.err != nil {
return nil
}
v := vp.int64()
return &v
}
// int64 interprets the underlying value as an int64 and returns that value.
// TODO: export if/when necessary.
func (vp *ValueParser) int64() int64 {
if vp.err != nil {
return 0
}
// A base value of zero makes ParseInt infer the correct base using the
// string's prefix, if any.
const base = 0
v, err := strconv.ParseInt(vp.v, base, 64)
if err != nil {
vp.err = err
return 0
}
return v
}
// PUInt64 interprets the underlying value as an uint64 and returns a pointer to
// that value.
func (vp *ValueParser) PUInt64() *uint64 {
if vp.err != nil {
return nil
}
// A base value of zero makes ParseInt infer the correct base using the
// string's prefix, if any.
const base = 0
v, err := strconv.ParseUint(vp.v, base, 64)
if err != nil {
vp.err = err
return nil
}
return &v
}
// Err returns the last error, if any, encountered by the ValueParser.
func (vp *ValueParser) Err() error {
return vp.err
}

12
vendor/github.com/prometheus/procfs/ipvs.go generated vendored
View File

@@ -15,6 +15,7 @@ package procfs
import (
"bufio"
"bytes"
"encoding/hex"
"errors"
"fmt"
@@ -24,6 +25,8 @@ import (
"os"
"strconv"
"strings"
"github.com/prometheus/procfs/internal/util"
)
// IPVSStats holds IPVS statistics, as exposed by the kernel in `/proc/net/ip_vs_stats`.
@@ -64,17 +67,16 @@ type IPVSBackendStatus struct {
// IPVSStats reads the IPVS statistics from the specified `proc` filesystem.
func (fs FS) IPVSStats() (IPVSStats, error) {
file, err := os.Open(fs.proc.Path("net/ip_vs_stats"))
data, err := util.ReadFileNoStat(fs.proc.Path("net/ip_vs_stats"))
if err != nil {
return IPVSStats{}, err
}
defer file.Close()
return parseIPVSStats(file)
return parseIPVSStats(bytes.NewReader(data))
}
// parseIPVSStats performs the actual parsing of `ip_vs_stats`.
func parseIPVSStats(file io.Reader) (IPVSStats, error) {
func parseIPVSStats(r io.Reader) (IPVSStats, error) {
var (
statContent []byte
statLines []string
@@ -82,7 +84,7 @@ func parseIPVSStats(file io.Reader) (IPVSStats, error) {
stats IPVSStats
)
statContent, err := ioutil.ReadAll(file)
statContent, err := ioutil.ReadAll(r)
if err != nil {
return IPVSStats{}, err
}

277
vendor/github.com/prometheus/procfs/meminfo.go generated vendored Normal file
View File

@@ -0,0 +1,277 @@
// Copyright 2019 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package procfs
import (
"bufio"
"bytes"
"fmt"
"io"
"strconv"
"strings"
"github.com/prometheus/procfs/internal/util"
)
// Meminfo represents memory statistics.
type Meminfo struct {
// Total usable ram (i.e. physical ram minus a few reserved
// bits and the kernel binary code)
MemTotal uint64
// The sum of LowFree+HighFree
MemFree uint64
// An estimate of how much memory is available for starting
// new applications, without swapping. Calculated from
// MemFree, SReclaimable, the size of the file LRU lists, and
// the low watermarks in each zone. The estimate takes into
// account that the system needs some page cache to function
// well, and that not all reclaimable slab will be
// reclaimable, due to items being in use. The impact of those
// factors will vary from system to system.
MemAvailable uint64
// Relatively temporary storage for raw disk blocks shouldn't
// get tremendously large (20MB or so)
Buffers uint64
Cached uint64
// Memory that once was swapped out, is swapped back in but
// still also is in the swapfile (if memory is needed it
// doesn't need to be swapped out AGAIN because it is already
// in the swapfile. This saves I/O)
SwapCached uint64
// Memory that has been used more recently and usually not
// reclaimed unless absolutely necessary.
Active uint64
// Memory which has been less recently used. It is more
// eligible to be reclaimed for other purposes
Inactive uint64
ActiveAnon uint64
InactiveAnon uint64
ActiveFile uint64
InactiveFile uint64
Unevictable uint64
Mlocked uint64
// total amount of swap space available
SwapTotal uint64
// Memory which has been evicted from RAM, and is temporarily
// on the disk
SwapFree uint64
// Memory which is waiting to get written back to the disk
Dirty uint64
// Memory which is actively being written back to the disk
Writeback uint64
// Non-file backed pages mapped into userspace page tables
AnonPages uint64
// files which have been mapped, such as libraries
Mapped uint64
Shmem uint64
// in-kernel data structures cache
Slab uint64
// Part of Slab, that might be reclaimed, such as caches
SReclaimable uint64
// Part of Slab, that cannot be reclaimed on memory pressure
SUnreclaim uint64
KernelStack uint64
// amount of memory dedicated to the lowest level of page
// tables.
PageTables uint64
// NFS pages sent to the server, but not yet committed to
// stable storage
NFSUnstable uint64
// Memory used for block device "bounce buffers"
Bounce uint64
// Memory used by FUSE for temporary writeback buffers
WritebackTmp uint64
// Based on the overcommit ratio ('vm.overcommit_ratio'),
// this is the total amount of memory currently available to
// be allocated on the system. This limit is only adhered to
// if strict overcommit accounting is enabled (mode 2 in
// 'vm.overcommit_memory').
// The CommitLimit is calculated with the following formula:
// CommitLimit = ([total RAM pages] - [total huge TLB pages]) *
// overcommit_ratio / 100 + [total swap pages]
// For example, on a system with 1G of physical RAM and 7G
// of swap with a `vm.overcommit_ratio` of 30 it would
// yield a CommitLimit of 7.3G.
// For more details, see the memory overcommit documentation
// in vm/overcommit-accounting.
CommitLimit uint64
// The amount of memory presently allocated on the system.
// The committed memory is a sum of all of the memory which
// has been allocated by processes, even if it has not been
// "used" by them as of yet. A process which malloc()'s 1G
// of memory, but only touches 300M of it will show up as
// using 1G. This 1G is memory which has been "committed" to
// by the VM and can be used at any time by the allocating
// application. With strict overcommit enabled on the system
// (mode 2 in 'vm.overcommit_memory'),allocations which would
// exceed the CommitLimit (detailed above) will not be permitted.
// This is useful if one needs to guarantee that processes will
// not fail due to lack of memory once that memory has been
// successfully allocated.
CommittedAS uint64
// total size of vmalloc memory area
VmallocTotal uint64
// amount of vmalloc area which is used
VmallocUsed uint64
// largest contiguous block of vmalloc area which is free
VmallocChunk uint64
HardwareCorrupted uint64
AnonHugePages uint64
ShmemHugePages uint64
ShmemPmdMapped uint64
CmaTotal uint64
CmaFree uint64
HugePagesTotal uint64
HugePagesFree uint64
HugePagesRsvd uint64
HugePagesSurp uint64
Hugepagesize uint64
DirectMap4k uint64
DirectMap2M uint64
DirectMap1G uint64
}
// Meminfo returns an information about current kernel/system memory statistics.
// See https://www.kernel.org/doc/Documentation/filesystems/proc.txt
func (fs FS) Meminfo() (Meminfo, error) {
b, err := util.ReadFileNoStat(fs.proc.Path("meminfo"))
if err != nil {
return Meminfo{}, err
}
m, err := parseMemInfo(bytes.NewReader(b))
if err != nil {
return Meminfo{}, fmt.Errorf("failed to parse meminfo: %v", err)
}
return *m, nil
}
func parseMemInfo(r io.Reader) (*Meminfo, error) {
var m Meminfo
s := bufio.NewScanner(r)
for s.Scan() {
// Each line has at least a name and value; we ignore the unit.
fields := strings.Fields(s.Text())
if len(fields) < 2 {
return nil, fmt.Errorf("malformed meminfo line: %q", s.Text())
}
v, err := strconv.ParseUint(fields[1], 0, 64)
if err != nil {
return nil, err
}
switch fields[0] {
case "MemTotal:":
m.MemTotal = v
case "MemFree:":
m.MemFree = v
case "MemAvailable:":
m.MemAvailable = v
case "Buffers:":
m.Buffers = v
case "Cached:":
m.Cached = v
case "SwapCached:":
m.SwapCached = v
case "Active:":
m.Active = v
case "Inactive:":
m.Inactive = v
case "Active(anon):":
m.ActiveAnon = v
case "Inactive(anon):":
m.InactiveAnon = v
case "Active(file):":
m.ActiveFile = v
case "Inactive(file):":
m.InactiveFile = v
case "Unevictable:":
m.Unevictable = v
case "Mlocked:":
m.Mlocked = v
case "SwapTotal:":
m.SwapTotal = v
case "SwapFree:":
m.SwapFree = v
case "Dirty:":
m.Dirty = v
case "Writeback:":
m.Writeback = v
case "AnonPages:":
m.AnonPages = v
case "Mapped:":
m.Mapped = v
case "Shmem:":
m.Shmem = v
case "Slab:":
m.Slab = v
case "SReclaimable:":
m.SReclaimable = v
case "SUnreclaim:":
m.SUnreclaim = v
case "KernelStack:":
m.KernelStack = v
case "PageTables:":
m.PageTables = v
case "NFS_Unstable:":
m.NFSUnstable = v
case "Bounce:":
m.Bounce = v
case "WritebackTmp:":
m.WritebackTmp = v
case "CommitLimit:":
m.CommitLimit = v
case "Committed_AS:":
m.CommittedAS = v
case "VmallocTotal:":
m.VmallocTotal = v
case "VmallocUsed:":
m.VmallocUsed = v
case "VmallocChunk:":
m.VmallocChunk = v
case "HardwareCorrupted:":
m.HardwareCorrupted = v
case "AnonHugePages:":
m.AnonHugePages = v
case "ShmemHugePages:":
m.ShmemHugePages = v
case "ShmemPmdMapped:":
m.ShmemPmdMapped = v
case "CmaTotal:":
m.CmaTotal = v
case "CmaFree:":
m.CmaFree = v
case "HugePages_Total:":
m.HugePagesTotal = v
case "HugePages_Free:":
m.HugePagesFree = v
case "HugePages_Rsvd:":
m.HugePagesRsvd = v
case "HugePages_Surp:":
m.HugePagesSurp = v
case "Hugepagesize:":
m.Hugepagesize = v
case "DirectMap4k:":
m.DirectMap4k = v
case "DirectMap2M:":
m.DirectMap2M = v
case "DirectMap1G:":
m.DirectMap1G = v
}
}
return &m, nil
}

114
vendor/github.com/prometheus/procfs/mountinfo.go generated vendored
View File

@@ -15,19 +15,13 @@ package procfs
import (
"bufio"
"bytes"
"fmt"
"io"
"os"
"strconv"
"strings"
)
var validOptionalFields = map[string]bool{
"shared": true,
"master": true,
"propagate_from": true,
"unbindable": true,
}
"github.com/prometheus/procfs/internal/util"
)
// A MountInfo is a type that describes the details, options
// for each mount, parsed from /proc/self/mountinfo.
@@ -58,18 +52,10 @@ type MountInfo struct {
SuperOptions map[string]string
}
// Returns part of the mountinfo line, if it exists, else an empty string.
func getStringSliceElement(parts []string, idx int, defaultValue string) string {
if idx >= len(parts) {
return defaultValue
}
return parts[idx]
}
// Reads each line of the mountinfo file, and returns a list of formatted MountInfo structs.
func parseMountInfo(r io.Reader) ([]*MountInfo, error) {
func parseMountInfo(info []byte) ([]*MountInfo, error) {
mounts := []*MountInfo{}
scanner := bufio.NewScanner(r)
scanner := bufio.NewScanner(bytes.NewReader(info))
for scanner.Scan() {
mountString := scanner.Text()
parsedMounts, err := parseMountInfoString(mountString)
@@ -89,57 +75,75 @@ func parseMountInfo(r io.Reader) ([]*MountInfo, error) {
func parseMountInfoString(mountString string) (*MountInfo, error) {
var err error
// OptionalFields can be zero, hence these checks to ensure we do not populate the wrong values in the wrong spots
separatorIndex := strings.Index(mountString, "-")
if separatorIndex == -1 {
return nil, fmt.Errorf("no separator found in mountinfo string: %s", mountString)
mountInfo := strings.Split(mountString, " ")
mountInfoLength := len(mountInfo)
if mountInfoLength < 11 {
return nil, fmt.Errorf("couldn't find enough fields in mount string: %s", mountString)
}
beforeFields := strings.Fields(mountString[:separatorIndex])
afterFields := strings.Fields(mountString[separatorIndex+1:])
if (len(beforeFields) + len(afterFields)) < 7 {
return nil, fmt.Errorf("too few fields")
if mountInfo[mountInfoLength-4] != "-" {
return nil, fmt.Errorf("couldn't find separator in expected field: %s", mountInfo[mountInfoLength-4])
}
mount := &MountInfo{
MajorMinorVer: getStringSliceElement(beforeFields, 2, ""),
Root: getStringSliceElement(beforeFields, 3, ""),
MountPoint: getStringSliceElement(beforeFields, 4, ""),
Options: mountOptionsParser(getStringSliceElement(beforeFields, 5, "")),
MajorMinorVer: mountInfo[2],
Root: mountInfo[3],
MountPoint: mountInfo[4],
Options: mountOptionsParser(mountInfo[5]),
OptionalFields: nil,
FSType: getStringSliceElement(afterFields, 0, ""),
Source: getStringSliceElement(afterFields, 1, ""),
SuperOptions: mountOptionsParser(getStringSliceElement(afterFields, 2, "")),
FSType: mountInfo[mountInfoLength-3],
Source: mountInfo[mountInfoLength-2],
SuperOptions: mountOptionsParser(mountInfo[mountInfoLength-1]),
}
mount.MountId, err = strconv.Atoi(getStringSliceElement(beforeFields, 0, ""))
mount.MountId, err = strconv.Atoi(mountInfo[0])
if err != nil {
return nil, fmt.Errorf("failed to parse mount ID")
}
mount.ParentId, err = strconv.Atoi(getStringSliceElement(beforeFields, 1, ""))
mount.ParentId, err = strconv.Atoi(mountInfo[1])
if err != nil {
return nil, fmt.Errorf("failed to parse parent ID")
}
// Has optional fields, which is a space separated list of values.
// Example: shared:2 master:7
if len(beforeFields) > 6 {
mount.OptionalFields = make(map[string]string)
optionalFields := beforeFields[6:]
for _, field := range optionalFields {
optionSplit := strings.Split(field, ":")
target, value := optionSplit[0], ""
if len(optionSplit) == 2 {
value = optionSplit[1]
}
// Checks if the 'keys' in the optional fields in the mountinfo line are acceptable.
// Allowed 'keys' are shared, master, propagate_from, unbindable.
if _, ok := validOptionalFields[target]; ok {
mount.OptionalFields[target] = value
}
if mountInfo[6] != "" {
mount.OptionalFields, err = mountOptionsParseOptionalFields(mountInfo[6 : mountInfoLength-4])
if err != nil {
return nil, err
}
}
return mount, nil
}
// mountOptionsIsValidField checks a string against a valid list of optional fields keys.
func mountOptionsIsValidField(s string) bool {
switch s {
case
"shared",
"master",
"propagate_from",
"unbindable":
return true
}
return false
}
// mountOptionsParseOptionalFields parses a list of optional fields strings into a double map of strings.
func mountOptionsParseOptionalFields(o []string) (map[string]string, error) {
optionalFields := make(map[string]string)
for _, field := range o {
optionSplit := strings.SplitN(field, ":", 2)
value := ""
if len(optionSplit) == 2 {
value = optionSplit[1]
}
if mountOptionsIsValidField(optionSplit[0]) {
optionalFields[optionSplit[0]] = value
}
}
return optionalFields, nil
}
// Parses the mount options, superblock options.
func mountOptionsParser(mountOptions string) map[string]string {
opts := make(map[string]string)
@@ -159,20 +163,18 @@ func mountOptionsParser(mountOptions string) map[string]string {
// Retrieves mountinfo information from `/proc/self/mountinfo`.
func GetMounts() ([]*MountInfo, error) {
f, err := os.Open("/proc/self/mountinfo")
data, err := util.ReadFileNoStat("/proc/self/mountinfo")
if err != nil {
return nil, err
}
defer f.Close()
return parseMountInfo(f)
return parseMountInfo(data)
}
// Retrieves mountinfo information from a processes' `/proc/<pid>/mountinfo`.
func GetProcMounts(pid int) ([]*MountInfo, error) {
f, err := os.Open(fmt.Sprintf("/proc/%d/mountinfo", pid))
data, err := util.ReadFileNoStat(fmt.Sprintf("/proc/%d/mountinfo", pid))
if err != nil {
return nil, err
}
defer f.Close()
return parseMountInfo(f)
return parseMountInfo(data)
}

1
vendor/github.com/prometheus/procfs/net_dev.go generated vendored
View File

@@ -183,7 +183,6 @@ func (netDev NetDev) Total() NetDevLine {
names = append(names, ifc.Name)
total.RxBytes += ifc.RxBytes
total.RxPackets += ifc.RxPackets
total.RxPackets += ifc.RxPackets
total.RxErrors += ifc.RxErrors
total.RxDropped += ifc.RxDropped
total.RxFIFO += ifc.RxFIFO

163
vendor/github.com/prometheus/procfs/net_sockstat.go generated vendored Normal file
View File

@@ -0,0 +1,163 @@
// Copyright 2019 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package procfs
import (
"bufio"
"bytes"
"errors"
"fmt"
"io"
"strings"
"github.com/prometheus/procfs/internal/util"
)
// A NetSockstat contains the output of /proc/net/sockstat{,6} for IPv4 or IPv6,
// respectively.
type NetSockstat struct {
// Used is non-nil for IPv4 sockstat results, but nil for IPv6.
Used *int
Protocols []NetSockstatProtocol
}
// A NetSockstatProtocol contains statistics about a given socket protocol.
// Pointer fields indicate that the value may or may not be present on any
// given protocol.
type NetSockstatProtocol struct {
Protocol string
InUse int
Orphan *int
TW *int
Alloc *int
Mem *int
Memory *int
}
// NetSockstat retrieves IPv4 socket statistics.
func (fs FS) NetSockstat() (*NetSockstat, error) {
return readSockstat(fs.proc.Path("net", "sockstat"))
}
// NetSockstat6 retrieves IPv6 socket statistics.
//
// If IPv6 is disabled on this kernel, the returned error can be checked with
// os.IsNotExist.
func (fs FS) NetSockstat6() (*NetSockstat, error) {
return readSockstat(fs.proc.Path("net", "sockstat6"))
}
// readSockstat opens and parses a NetSockstat from the input file.
func readSockstat(name string) (*NetSockstat, error) {
// This file is small and can be read with one syscall.
b, err := util.ReadFileNoStat(name)
if err != nil {
// Do not wrap this error so the caller can detect os.IsNotExist and
// similar conditions.
return nil, err
}
stat, err := parseSockstat(bytes.NewReader(b))
if err != nil {
return nil, fmt.Errorf("failed to read sockstats from %q: %v", name, err)
}
return stat, nil
}
// parseSockstat reads the contents of a sockstat file and parses a NetSockstat.
func parseSockstat(r io.Reader) (*NetSockstat, error) {
var stat NetSockstat
s := bufio.NewScanner(r)
for s.Scan() {
// Expect a minimum of a protocol and one key/value pair.
fields := strings.Split(s.Text(), " ")
if len(fields) < 3 {
return nil, fmt.Errorf("malformed sockstat line: %q", s.Text())
}
// The remaining fields are key/value pairs.
kvs, err := parseSockstatKVs(fields[1:])
if err != nil {
return nil, fmt.Errorf("error parsing sockstat key/value pairs from %q: %v", s.Text(), err)
}
// The first field is the protocol. We must trim its colon suffix.
proto := strings.TrimSuffix(fields[0], ":")
switch proto {
case "sockets":
// Special case: IPv4 has a sockets "used" key/value pair that we
// embed at the top level of the structure.
used := kvs["used"]
stat.Used = &used
default:
// Parse all other lines as individual protocols.
nsp := parseSockstatProtocol(kvs)
nsp.Protocol = proto
stat.Protocols = append(stat.Protocols, nsp)
}
}
if err := s.Err(); err != nil {
return nil, err
}
return &stat, nil
}
// parseSockstatKVs parses a string slice into a map of key/value pairs.
func parseSockstatKVs(kvs []string) (map[string]int, error) {
if len(kvs)%2 != 0 {
return nil, errors.New("odd number of fields in key/value pairs")
}
// Iterate two values at a time to gather key/value pairs.
out := make(map[string]int, len(kvs)/2)
for i := 0; i < len(kvs); i += 2 {
vp := util.NewValueParser(kvs[i+1])
out[kvs[i]] = vp.Int()
if err := vp.Err(); err != nil {
return nil, err
}
}
return out, nil
}
// parseSockstatProtocol parses a NetSockstatProtocol from the input kvs map.
func parseSockstatProtocol(kvs map[string]int) NetSockstatProtocol {
var nsp NetSockstatProtocol
for k, v := range kvs {
// Capture the range variable to ensure we get unique pointers for
// each of the optional fields.
v := v
switch k {
case "inuse":
nsp.InUse = v
case "orphan":
nsp.Orphan = &v
case "tw":
nsp.TW = &v
case "alloc":
nsp.Alloc = &v
case "mem":
nsp.Mem = &v
case "memory":
nsp.Memory = &v
}
}
return nsp
}

91
vendor/github.com/prometheus/procfs/net_softnet.go generated vendored Normal file
View File

@@ -0,0 +1,91 @@
// Copyright 2019 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package procfs
import (
"fmt"
"io/ioutil"
"strconv"
"strings"
)
// For the proc file format details,
// see https://elixir.bootlin.com/linux/v4.17/source/net/core/net-procfs.c#L162
// and https://elixir.bootlin.com/linux/v4.17/source/include/linux/netdevice.h#L2810.
// SoftnetEntry contains a single row of data from /proc/net/softnet_stat
type SoftnetEntry struct {
// Number of processed packets
Processed uint
// Number of dropped packets
Dropped uint
// Number of times processing packets ran out of quota
TimeSqueezed uint
}
// GatherSoftnetStats reads /proc/net/softnet_stat, parse the relevant columns,
// and then return a slice of SoftnetEntry's.
func (fs FS) GatherSoftnetStats() ([]SoftnetEntry, error) {
data, err := ioutil.ReadFile(fs.proc.Path("net/softnet_stat"))
if err != nil {
return nil, fmt.Errorf("error reading softnet %s: %s", fs.proc.Path("net/softnet_stat"), err)
}
return parseSoftnetEntries(data)
}
func parseSoftnetEntries(data []byte) ([]SoftnetEntry, error) {
lines := strings.Split(string(data), "\n")
entries := make([]SoftnetEntry, 0)
var err error
const (
expectedColumns = 11
)
for _, line := range lines {
columns := strings.Fields(line)
width := len(columns)
if width == 0 {
continue
}
if width != expectedColumns {
return []SoftnetEntry{}, fmt.Errorf("%d columns were detected, but %d were expected", width, expectedColumns)
}
var entry SoftnetEntry
if entry, err = parseSoftnetEntry(columns); err != nil {
return []SoftnetEntry{}, err
}
entries = append(entries, entry)
}
return entries, nil
}
func parseSoftnetEntry(columns []string) (SoftnetEntry, error) {
var err error
var processed, dropped, timeSqueezed uint64
if processed, err = strconv.ParseUint(columns[0], 16, 32); err != nil {
return SoftnetEntry{}, fmt.Errorf("Unable to parse column 0: %s", err)
}
if dropped, err = strconv.ParseUint(columns[1], 16, 32); err != nil {
return SoftnetEntry{}, fmt.Errorf("Unable to parse column 1: %s", err)
}
if timeSqueezed, err = strconv.ParseUint(columns[2], 16, 32); err != nil {
return SoftnetEntry{}, fmt.Errorf("Unable to parse column 2: %s", err)
}
return SoftnetEntry{
Processed: uint(processed),
Dropped: uint(dropped),
TimeSqueezed: uint(timeSqueezed),
}, nil
}

4
vendor/github.com/prometheus/procfs/net_unix.go generated vendored
View File

@@ -207,10 +207,6 @@ func (u NetUnix) parseUsers(hexStr string) (uint64, error) {
return strconv.ParseUint(hexStr, 16, 32)
}
func (u NetUnix) parseProtocol(hexStr string) (uint64, error) {
return strconv.ParseUint(hexStr, 16, 32)
}
func (u NetUnix) parseType(hexStr string) (NetUnixType, error) {
typ, err := strconv.ParseUint(hexStr, 16, 16)
if err != nil {

53
vendor/github.com/prometheus/procfs/proc.go generated vendored
View File

@@ -22,6 +22,7 @@ import (
"strings"
"github.com/prometheus/procfs/internal/fs"
"github.com/prometheus/procfs/internal/util"
)
// Proc provides information about a running process.
@@ -121,13 +122,7 @@ func (fs FS) AllProcs() (Procs, error) {
// CmdLine returns the command line of a process.
func (p Proc) CmdLine() ([]string, error) {
f, err := os.Open(p.path("cmdline"))
if err != nil {
return nil, err
}
defer f.Close()
data, err := ioutil.ReadAll(f)
data, err := util.ReadFileNoStat(p.path("cmdline"))
if err != nil {
return nil, err
}
@@ -141,13 +136,7 @@ func (p Proc) CmdLine() ([]string, error) {
// Comm returns the command name of a process.
func (p Proc) Comm() (string, error) {
f, err := os.Open(p.path("comm"))
if err != nil {
return "", err
}
defer f.Close()
data, err := ioutil.ReadAll(f)
data, err := util.ReadFileNoStat(p.path("comm"))
if err != nil {
return "", err
}
@@ -252,13 +241,11 @@ func (p Proc) MountStats() ([]*Mount, error) {
// It supplies information missing in `/proc/self/mounts` and
// fixes various other problems with that file too.
func (p Proc) MountInfo() ([]*MountInfo, error) {
f, err := os.Open(p.path("mountinfo"))
data, err := util.ReadFileNoStat(p.path("mountinfo"))
if err != nil {
return nil, err
}
defer f.Close()
return parseMountInfo(f)
return parseMountInfo(data)
}
func (p Proc) fileDescriptors() ([]string, error) {
@@ -279,3 +266,33 @@ func (p Proc) fileDescriptors() ([]string, error) {
func (p Proc) path(pa ...string) string {
return p.fs.Path(append([]string{strconv.Itoa(p.PID)}, pa...)...)
}
// FileDescriptorsInfo retrieves information about all file descriptors of
// the process.
func (p Proc) FileDescriptorsInfo() (ProcFDInfos, error) {
names, err := p.fileDescriptors()
if err != nil {
return nil, err
}
var fdinfos ProcFDInfos
for _, n := range names {
fdinfo, err := p.FDInfo(n)
if err != nil {
continue
}
fdinfos = append(fdinfos, *fdinfo)
}
return fdinfos, nil
}
// Schedstat returns task scheduling information for the process.
func (p Proc) Schedstat() (ProcSchedstat, error) {
contents, err := ioutil.ReadFile(p.path("schedstat"))
if err != nil {
return ProcSchedstat{}, err
}
return parseProcSchedstat(string(contents))
}

12
vendor/github.com/prometheus/procfs/proc_environ.go generated vendored
View File

@@ -14,22 +14,16 @@
package procfs
import (
"io/ioutil"
"os"
"strings"
"github.com/prometheus/procfs/internal/util"
)
// Environ reads process environments from /proc/<pid>/environ
func (p Proc) Environ() ([]string, error) {
environments := make([]string, 0)
f, err := os.Open(p.path("environ"))
if err != nil {
return environments, err
}
defer f.Close()
data, err := ioutil.ReadAll(f)
data, err := util.ReadFileNoStat(p.path("environ"))
if err != nil {
return environments, err
}

125
vendor/github.com/prometheus/procfs/proc_fdinfo.go generated vendored Normal file
View File

@@ -0,0 +1,125 @@
// Copyright 2019 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package procfs
import (
"bufio"
"bytes"
"regexp"
"github.com/prometheus/procfs/internal/util"
)
// Regexp variables
var (
rPos = regexp.MustCompile(`^pos:\s+(\d+)$`)
rFlags = regexp.MustCompile(`^flags:\s+(\d+)$`)
rMntID = regexp.MustCompile(`^mnt_id:\s+(\d+)$`)
rInotify = regexp.MustCompile(`^inotify`)
)
// ProcFDInfo contains represents file descriptor information.
type ProcFDInfo struct {
// File descriptor
FD string
// File offset
Pos string
// File access mode and status flags
Flags string
// Mount point ID
MntID string
// List of inotify lines (structed) in the fdinfo file (kernel 3.8+ only)
InotifyInfos []InotifyInfo
}
// FDInfo constructor. On kernels older than 3.8, InotifyInfos will always be empty.
func (p Proc) FDInfo(fd string) (*ProcFDInfo, error) {
data, err := util.ReadFileNoStat(p.path("fdinfo", fd))
if err != nil {
return nil, err
}
var text, pos, flags, mntid string
var inotify []InotifyInfo
scanner := bufio.NewScanner(bytes.NewReader(data))
for scanner.Scan() {
text = scanner.Text()
if rPos.MatchString(text) {
pos = rPos.FindStringSubmatch(text)[1]
} else if rFlags.MatchString(text) {
flags = rFlags.FindStringSubmatch(text)[1]
} else if rMntID.MatchString(text) {
mntid = rMntID.FindStringSubmatch(text)[1]
} else if rInotify.MatchString(text) {
newInotify, err := parseInotifyInfo(text)
if err != nil {
return nil, err
}
inotify = append(inotify, *newInotify)
}
}
i := &ProcFDInfo{
FD: fd,
Pos: pos,
Flags: flags,
MntID: mntid,
InotifyInfos: inotify,
}
return i, nil
}
// InotifyInfo represents a single inotify line in the fdinfo file.
type InotifyInfo struct {
// Watch descriptor number
WD string
// Inode number
Ino string
// Device ID
Sdev string
// Mask of events being monitored
Mask string
}
// InotifyInfo constructor. Only available on kernel 3.8+.
func parseInotifyInfo(line string) (*InotifyInfo, error) {
r := regexp.MustCompile(`^inotify\s+wd:([0-9a-f]+)\s+ino:([0-9a-f]+)\s+sdev:([0-9a-f]+)\s+mask:([0-9a-f]+)`)
m := r.FindStringSubmatch(line)
i := &InotifyInfo{
WD: m[1],
Ino: m[2],
Sdev: m[3],
Mask: m[4],
}
return i, nil
}
// ProcFDInfos represents a list of ProcFDInfo structs.
type ProcFDInfos []ProcFDInfo
func (p ProcFDInfos) Len() int { return len(p) }
func (p ProcFDInfos) Swap(i, j int) { p[i], p[j] = p[j], p[i] }
func (p ProcFDInfos) Less(i, j int) bool { return p[i].FD < p[j].FD }
// InotifyWatchLen returns the total number of inotify watches
func (p ProcFDInfos) InotifyWatchLen() (int, error) {
length := 0
for _, f := range p {
length += len(f.InotifyInfos)
}
return length, nil
}

12
vendor/github.com/prometheus/procfs/proc_io.go generated vendored
View File

@@ -15,8 +15,8 @@ package procfs
import (
"fmt"
"io/ioutil"
"os"
"github.com/prometheus/procfs/internal/util"
)
// ProcIO models the content of /proc/<pid>/io.
@@ -43,13 +43,7 @@ type ProcIO struct {
func (p Proc) IO() (ProcIO, error) {
pio := ProcIO{}
f, err := os.Open(p.path("io"))
if err != nil {
return pio, err
}
defer f.Close()
data, err := ioutil.ReadAll(f)
data, err := util.ReadFileNoStat(p.path("io"))
if err != nil {
return pio, err
}

21
vendor/github.com/prometheus/procfs/proc_psi.go generated vendored
View File

@@ -24,11 +24,13 @@ package procfs
// > full avg10=0.00 avg60=0.13 avg300=0.96 total=8183134
import (
"bufio"
"bytes"
"fmt"
"io"
"io/ioutil"
"os"
"strings"
"github.com/prometheus/procfs/internal/util"
)
const lineFormat = "avg10=%f avg60=%f avg300=%f total=%d"
@@ -55,24 +57,21 @@ type PSIStats struct {
// resource from /proc/pressure/<resource>. At time of writing this can be
// either "cpu", "memory" or "io".
func (fs FS) PSIStatsForResource(resource string) (PSIStats, error) {
file, err := os.Open(fs.proc.Path(fmt.Sprintf("%s/%s", "pressure", resource)))
data, err := util.ReadFileNoStat(fs.proc.Path(fmt.Sprintf("%s/%s", "pressure", resource)))
if err != nil {
return PSIStats{}, fmt.Errorf("psi_stats: unavailable for %s", resource)
}
defer file.Close()
return parsePSIStats(resource, file)
return parsePSIStats(resource, bytes.NewReader(data))
}
// parsePSIStats parses the specified file for pressure stall information
func parsePSIStats(resource string, file io.Reader) (PSIStats, error) {
func parsePSIStats(resource string, r io.Reader) (PSIStats, error) {
psiStats := PSIStats{}
stats, err := ioutil.ReadAll(file)
if err != nil {
return psiStats, fmt.Errorf("psi_stats: unable to read data for %s", resource)
}
for _, l := range strings.Split(string(stats), "\n") {
scanner := bufio.NewScanner(r)
for scanner.Scan() {
l := scanner.Text()
prefix := strings.Split(l, " ")[0]
switch prefix {
case "some":

10
vendor/github.com/prometheus/procfs/proc_stat.go generated vendored
View File

@@ -16,10 +16,10 @@ package procfs
import (
"bytes"
"fmt"
"io/ioutil"
"os"
"github.com/prometheus/procfs/internal/fs"
"github.com/prometheus/procfs/internal/util"
)
// Originally, this USER_HZ value was dynamically retrieved via a sysconf call
@@ -113,13 +113,7 @@ func (p Proc) NewStat() (ProcStat, error) {
// Stat returns the current status information of the process.
func (p Proc) Stat() (ProcStat, error) {
f, err := os.Open(p.path("stat"))
if err != nil {
return ProcStat{}, err
}
defer f.Close()
data, err := ioutil.ReadAll(f)
data, err := util.ReadFileNoStat(p.path("stat"))
if err != nil {
return ProcStat{}, err
}

19
vendor/github.com/prometheus/procfs/proc_status.go generated vendored
View File

@@ -15,13 +15,13 @@ package procfs
import (
"bytes"
"io/ioutil"
"os"
"strconv"
"strings"
"github.com/prometheus/procfs/internal/util"
)
// ProcStat provides status information about the process,
// ProcStatus provides status information about the process,
// read from /proc/[pid]/stat.
type ProcStatus struct {
// The process ID.
@@ -29,6 +29,9 @@ type ProcStatus struct {
// The process name.
Name string
// Thread group ID.
TGID int
// Peak virtual memory size.
VmPeak uint64
// Virtual memory size.
@@ -72,13 +75,7 @@ type ProcStatus struct {
// NewStatus returns the current status information of the process.
func (p Proc) NewStatus() (ProcStatus, error) {
f, err := os.Open(p.path("status"))
if err != nil {
return ProcStatus{}, err
}
defer f.Close()
data, err := ioutil.ReadAll(f)
data, err := util.ReadFileNoStat(p.path("status"))
if err != nil {
return ProcStatus{}, err
}
@@ -113,6 +110,8 @@ func (p Proc) NewStatus() (ProcStatus, error) {
func (s *ProcStatus) fillStatus(k string, vString string, vUint uint64, vUintBytes uint64) {
switch k {
case "Tgid":
s.TGID = int(vUint)
case "Name":
s.Name = vString
case "VmPeak":

118
vendor/github.com/prometheus/procfs/schedstat.go generated vendored Normal file
View File

@@ -0,0 +1,118 @@
// Copyright 2019 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package procfs
import (
"bufio"
"errors"
"os"
"regexp"
"strconv"
)
var (
cpuLineRE = regexp.MustCompile(`cpu(\d+) (\d+) (\d+) (\d+) (\d+) (\d+) (\d+) (\d+) (\d+) (\d+)`)
procLineRE = regexp.MustCompile(`(\d+) (\d+) (\d+)`)
)
// Schedstat contains scheduler statistics from /proc/schedstat
//
// See
// https://www.kernel.org/doc/Documentation/scheduler/sched-stats.txt
// for a detailed description of what these numbers mean.
//
// Note the current kernel documentation claims some of the time units are in
// jiffies when they are actually in nanoseconds since 2.6.23 with the
// introduction of CFS. A fix to the documentation is pending. See
// https://lore.kernel.org/patchwork/project/lkml/list/?series=403473
type Schedstat struct {
CPUs []*SchedstatCPU
}
// SchedstatCPU contains the values from one "cpu<N>" line
type SchedstatCPU struct {
CPUNum string
RunningNanoseconds uint64
WaitingNanoseconds uint64
RunTimeslices uint64
}
// ProcSchedstat contains the values from /proc/<pid>/schedstat
type ProcSchedstat struct {
RunningNanoseconds uint64
WaitingNanoseconds uint64
RunTimeslices uint64
}
// Schedstat reads data from /proc/schedstat
func (fs FS) Schedstat() (*Schedstat, error) {
file, err := os.Open(fs.proc.Path("schedstat"))
if err != nil {
return nil, err
}
defer file.Close()
stats := &Schedstat{}
scanner := bufio.NewScanner(file)
for scanner.Scan() {
match := cpuLineRE.FindStringSubmatch(scanner.Text())
if match != nil {
cpu := &SchedstatCPU{}
cpu.CPUNum = match[1]
cpu.RunningNanoseconds, err = strconv.ParseUint(match[8], 10, 64)
if err != nil {
continue
}
cpu.WaitingNanoseconds, err = strconv.ParseUint(match[9], 10, 64)
if err != nil {
continue
}
cpu.RunTimeslices, err = strconv.ParseUint(match[10], 10, 64)
if err != nil {
continue
}
stats.CPUs = append(stats.CPUs, cpu)
}
}
return stats, nil
}
func parseProcSchedstat(contents string) (stats ProcSchedstat, err error) {
match := procLineRE.FindStringSubmatch(contents)
if match != nil {
stats.RunningNanoseconds, err = strconv.ParseUint(match[1], 10, 64)
if err != nil {
return
}
stats.WaitingNanoseconds, err = strconv.ParseUint(match[2], 10, 64)
if err != nil {
return
}
stats.RunTimeslices, err = strconv.ParseUint(match[3], 10, 64)
return
}
err = errors.New("could not parse schedstat")
return
}

12
vendor/github.com/prometheus/procfs/stat.go generated vendored
View File

@@ -15,13 +15,14 @@ package procfs
import (
"bufio"
"bytes"
"fmt"
"io"
"os"
"strconv"
"strings"
"github.com/prometheus/procfs/internal/fs"
"github.com/prometheus/procfs/internal/util"
)
// CPUStat shows how much time the cpu spend in various stages.
@@ -164,16 +165,15 @@ func (fs FS) NewStat() (Stat, error) {
// Stat returns information about current cpu/process statistics.
// See https://www.kernel.org/doc/Documentation/filesystems/proc.txt
func (fs FS) Stat() (Stat, error) {
f, err := os.Open(fs.proc.Path("stat"))
fileName := fs.proc.Path("stat")
data, err := util.ReadFileNoStat(fileName)
if err != nil {
return Stat{}, err
}
defer f.Close()
stat := Stat{}
scanner := bufio.NewScanner(f)
scanner := bufio.NewScanner(bytes.NewReader(data))
for scanner.Scan() {
line := scanner.Text()
parts := strings.Fields(scanner.Text())
@@ -237,7 +237,7 @@ func (fs FS) Stat() (Stat, error) {
}
if err := scanner.Err(); err != nil {
return Stat{}, fmt.Errorf("couldn't parse %s: %s", f.Name(), err)
return Stat{}, fmt.Errorf("couldn't parse %s: %s", fileName, err)
}
return stat, nil

210
vendor/github.com/prometheus/procfs/vm.go generated vendored Normal file
View File

@@ -0,0 +1,210 @@
// Copyright 2019 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build !windows
package procfs
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strings"
"github.com/prometheus/procfs/internal/util"
)
// The VM interface is described at
// https://www.kernel.org/doc/Documentation/sysctl/vm.txt
// Each setting is exposed as a single file.
// Each file contains one line with a single numerical value, except lowmem_reserve_ratio which holds an array
// and numa_zonelist_order (deprecated) which is a string
type VM struct {
AdminReserveKbytes *int64 // /proc/sys/vm/admin_reserve_kbytes
BlockDump *int64 // /proc/sys/vm/block_dump
CompactUnevictableAllowed *int64 // /proc/sys/vm/compact_unevictable_allowed
DirtyBackgroundBytes *int64 // /proc/sys/vm/dirty_background_bytes
DirtyBackgroundRatio *int64 // /proc/sys/vm/dirty_background_ratio
DirtyBytes *int64 // /proc/sys/vm/dirty_bytes
DirtyExpireCentisecs *int64 // /proc/sys/vm/dirty_expire_centisecs
DirtyRatio *int64 // /proc/sys/vm/dirty_ratio
DirtytimeExpireSeconds *int64 // /proc/sys/vm/dirtytime_expire_seconds
DirtyWritebackCentisecs *int64 // /proc/sys/vm/dirty_writeback_centisecs
DropCaches *int64 // /proc/sys/vm/drop_caches
ExtfragThreshold *int64 // /proc/sys/vm/extfrag_threshold
HugetlbShmGroup *int64 // /proc/sys/vm/hugetlb_shm_group
LaptopMode *int64 // /proc/sys/vm/laptop_mode
LegacyVaLayout *int64 // /proc/sys/vm/legacy_va_layout
LowmemReserveRatio []*int64 // /proc/sys/vm/lowmem_reserve_ratio
MaxMapCount *int64 // /proc/sys/vm/max_map_count
MemoryFailureEarlyKill *int64 // /proc/sys/vm/memory_failure_early_kill
MemoryFailureRecovery *int64 // /proc/sys/vm/memory_failure_recovery
MinFreeKbytes *int64 // /proc/sys/vm/min_free_kbytes
MinSlabRatio *int64 // /proc/sys/vm/min_slab_ratio
MinUnmappedRatio *int64 // /proc/sys/vm/min_unmapped_ratio
MmapMinAddr *int64 // /proc/sys/vm/mmap_min_addr
NrHugepages *int64 // /proc/sys/vm/nr_hugepages
NrHugepagesMempolicy *int64 // /proc/sys/vm/nr_hugepages_mempolicy
NrOvercommitHugepages *int64 // /proc/sys/vm/nr_overcommit_hugepages
NumaStat *int64 // /proc/sys/vm/numa_stat
NumaZonelistOrder string // /proc/sys/vm/numa_zonelist_order
OomDumpTasks *int64 // /proc/sys/vm/oom_dump_tasks
OomKillAllocatingTask *int64 // /proc/sys/vm/oom_kill_allocating_task
OvercommitKbytes *int64 // /proc/sys/vm/overcommit_kbytes
OvercommitMemory *int64 // /proc/sys/vm/overcommit_memory
OvercommitRatio *int64 // /proc/sys/vm/overcommit_ratio
PageCluster *int64 // /proc/sys/vm/page-cluster
PanicOnOom *int64 // /proc/sys/vm/panic_on_oom
PercpuPagelistFraction *int64 // /proc/sys/vm/percpu_pagelist_fraction
StatInterval *int64 // /proc/sys/vm/stat_interval
Swappiness *int64 // /proc/sys/vm/swappiness
UserReserveKbytes *int64 // /proc/sys/vm/user_reserve_kbytes
VfsCachePressure *int64 // /proc/sys/vm/vfs_cache_pressure
WatermarkBoostFactor *int64 // /proc/sys/vm/watermark_boost_factor
WatermarkScaleFactor *int64 // /proc/sys/vm/watermark_scale_factor
ZoneReclaimMode *int64 // /proc/sys/vm/zone_reclaim_mode
}
// VM reads the VM statistics from the specified `proc` filesystem.
func (fs FS) VM() (*VM, error) {
path := fs.proc.Path("sys/vm")
file, err := os.Stat(path)
if err != nil {
return nil, err
}
if !file.Mode().IsDir() {
return nil, fmt.Errorf("%s is not a directory", path)
}
files, err := ioutil.ReadDir(path)
if err != nil {
return nil, err
}
var vm VM
for _, f := range files {
if f.IsDir() {
continue
}
name := filepath.Join(path, f.Name())
// ignore errors on read, as there are some write only
// in /proc/sys/vm
value, err := util.SysReadFile(name)
if err != nil {
continue
}
vp := util.NewValueParser(value)
switch f.Name() {
case "admin_reserve_kbytes":
vm.AdminReserveKbytes = vp.PInt64()
case "block_dump":
vm.BlockDump = vp.PInt64()
case "compact_unevictable_allowed":
vm.CompactUnevictableAllowed = vp.PInt64()
case "dirty_background_bytes":
vm.DirtyBackgroundBytes = vp.PInt64()
case "dirty_background_ratio":
vm.DirtyBackgroundRatio = vp.PInt64()
case "dirty_bytes":
vm.DirtyBytes = vp.PInt64()
case "dirty_expire_centisecs":
vm.DirtyExpireCentisecs = vp.PInt64()
case "dirty_ratio":
vm.DirtyRatio = vp.PInt64()
case "dirtytime_expire_seconds":
vm.DirtytimeExpireSeconds = vp.PInt64()
case "dirty_writeback_centisecs":
vm.DirtyWritebackCentisecs = vp.PInt64()
case "drop_caches":
vm.DropCaches = vp.PInt64()
case "extfrag_threshold":
vm.ExtfragThreshold = vp.PInt64()
case "hugetlb_shm_group":
vm.HugetlbShmGroup = vp.PInt64()
case "laptop_mode":
vm.LaptopMode = vp.PInt64()
case "legacy_va_layout":
vm.LegacyVaLayout = vp.PInt64()
case "lowmem_reserve_ratio":
stringSlice := strings.Fields(value)
pint64Slice := make([]*int64, 0, len(stringSlice))
for _, value := range stringSlice {
vp := util.NewValueParser(value)
pint64Slice = append(pint64Slice, vp.PInt64())
}
vm.LowmemReserveRatio = pint64Slice
case "max_map_count":
vm.MaxMapCount = vp.PInt64()
case "memory_failure_early_kill":
vm.MemoryFailureEarlyKill = vp.PInt64()
case "memory_failure_recovery":
vm.MemoryFailureRecovery = vp.PInt64()
case "min_free_kbytes":
vm.MinFreeKbytes = vp.PInt64()
case "min_slab_ratio":
vm.MinSlabRatio = vp.PInt64()
case "min_unmapped_ratio":
vm.MinUnmappedRatio = vp.PInt64()
case "mmap_min_addr":
vm.MmapMinAddr = vp.PInt64()
case "nr_hugepages":
vm.NrHugepages = vp.PInt64()
case "nr_hugepages_mempolicy":
vm.NrHugepagesMempolicy = vp.PInt64()
case "nr_overcommit_hugepages":
vm.NrOvercommitHugepages = vp.PInt64()
case "numa_stat":
vm.NumaStat = vp.PInt64()
case "numa_zonelist_order":
vm.NumaZonelistOrder = value
case "oom_dump_tasks":
vm.OomDumpTasks = vp.PInt64()
case "oom_kill_allocating_task":
vm.OomKillAllocatingTask = vp.PInt64()
case "overcommit_kbytes":
vm.OvercommitKbytes = vp.PInt64()
case "overcommit_memory":
vm.OvercommitMemory = vp.PInt64()
case "overcommit_ratio":
vm.OvercommitRatio = vp.PInt64()
case "page-cluster":
vm.PageCluster = vp.PInt64()
case "panic_on_oom":
vm.PanicOnOom = vp.PInt64()
case "percpu_pagelist_fraction":
vm.PercpuPagelistFraction = vp.PInt64()
case "stat_interval":
vm.StatInterval = vp.PInt64()
case "swappiness":
vm.Swappiness = vp.PInt64()
case "user_reserve_kbytes":
vm.UserReserveKbytes = vp.PInt64()
case "vfs_cache_pressure":
vm.VfsCachePressure = vp.PInt64()
case "watermark_boost_factor":
vm.WatermarkBoostFactor = vp.PInt64()
case "watermark_scale_factor":
vm.WatermarkScaleFactor = vp.PInt64()
case "zone_reclaim_mode":
vm.ZoneReclaimMode = vp.PInt64()
}
if err := vp.Err(); err != nil {
return nil, err
}
}
return &vm, nil
}

196
vendor/github.com/prometheus/procfs/zoneinfo.go generated vendored Normal file
View File

@@ -0,0 +1,196 @@
// Copyright 2019 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build !windows
package procfs
import (
"bytes"
"fmt"
"io/ioutil"
"regexp"
"strings"
"github.com/prometheus/procfs/internal/util"
)
// Zoneinfo holds info parsed from /proc/zoneinfo.
type Zoneinfo struct {
Node string
Zone string
NrFreePages *int64
Min *int64
Low *int64
High *int64
Scanned *int64
Spanned *int64
Present *int64
Managed *int64
NrActiveAnon *int64
NrInactiveAnon *int64
NrIsolatedAnon *int64
NrAnonPages *int64
NrAnonTransparentHugepages *int64
NrActiveFile *int64
NrInactiveFile *int64
NrIsolatedFile *int64
NrFilePages *int64
NrSlabReclaimable *int64
NrSlabUnreclaimable *int64
NrMlockStack *int64
NrKernelStack *int64
NrMapped *int64
NrDirty *int64
NrWriteback *int64
NrUnevictable *int64
NrShmem *int64
NrDirtied *int64
NrWritten *int64
NumaHit *int64
NumaMiss *int64
NumaForeign *int64
NumaInterleave *int64
NumaLocal *int64
NumaOther *int64
Protection []*int64
}
var nodeZoneRE = regexp.MustCompile(`(\d+), zone\s+(\w+)`)
// Zoneinfo parses an zoneinfo-file (/proc/zoneinfo) and returns a slice of
// structs containing the relevant info. More information available here:
// https://www.kernel.org/doc/Documentation/sysctl/vm.txt
func (fs FS) Zoneinfo() ([]Zoneinfo, error) {
data, err := ioutil.ReadFile(fs.proc.Path("zoneinfo"))
if err != nil {
return nil, fmt.Errorf("error reading zoneinfo %s: %s", fs.proc.Path("zoneinfo"), err)
}
zoneinfo, err := parseZoneinfo(data)
if err != nil {
return nil, fmt.Errorf("error parsing zoneinfo %s: %s", fs.proc.Path("zoneinfo"), err)
}
return zoneinfo, nil
}
func parseZoneinfo(zoneinfoData []byte) ([]Zoneinfo, error) {
zoneinfo := []Zoneinfo{}
zoneinfoBlocks := bytes.Split(zoneinfoData, []byte("\nNode"))
for _, block := range zoneinfoBlocks {
var zoneinfoElement Zoneinfo
lines := strings.Split(string(block), "\n")
for _, line := range lines {
if nodeZone := nodeZoneRE.FindStringSubmatch(line); nodeZone != nil {
zoneinfoElement.Node = nodeZone[1]
zoneinfoElement.Zone = nodeZone[2]
continue
}
if strings.HasPrefix(strings.TrimSpace(line), "per-node stats") {
zoneinfoElement.Zone = ""
continue
}
parts := strings.Fields(strings.TrimSpace(line))
if len(parts) < 2 {
continue
}
vp := util.NewValueParser(parts[1])
switch parts[0] {
case "nr_free_pages":
zoneinfoElement.NrFreePages = vp.PInt64()
case "min":
zoneinfoElement.Min = vp.PInt64()
case "low":
zoneinfoElement.Low = vp.PInt64()
case "high":
zoneinfoElement.High = vp.PInt64()
case "scanned":
zoneinfoElement.Scanned = vp.PInt64()
case "spanned":
zoneinfoElement.Spanned = vp.PInt64()
case "present":
zoneinfoElement.Present = vp.PInt64()
case "managed":
zoneinfoElement.Managed = vp.PInt64()
case "nr_active_anon":
zoneinfoElement.NrActiveAnon = vp.PInt64()
case "nr_inactive_anon":
zoneinfoElement.NrInactiveAnon = vp.PInt64()
case "nr_isolated_anon":
zoneinfoElement.NrIsolatedAnon = vp.PInt64()
case "nr_anon_pages":
zoneinfoElement.NrAnonPages = vp.PInt64()
case "nr_anon_transparent_hugepages":
zoneinfoElement.NrAnonTransparentHugepages = vp.PInt64()
case "nr_active_file":
zoneinfoElement.NrActiveFile = vp.PInt64()
case "nr_inactive_file":
zoneinfoElement.NrInactiveFile = vp.PInt64()
case "nr_isolated_file":
zoneinfoElement.NrIsolatedFile = vp.PInt64()
case "nr_file_pages":
zoneinfoElement.NrFilePages = vp.PInt64()
case "nr_slab_reclaimable":
zoneinfoElement.NrSlabReclaimable = vp.PInt64()
case "nr_slab_unreclaimable":
zoneinfoElement.NrSlabUnreclaimable = vp.PInt64()
case "nr_mlock_stack":
zoneinfoElement.NrMlockStack = vp.PInt64()
case "nr_kernel_stack":
zoneinfoElement.NrKernelStack = vp.PInt64()
case "nr_mapped":
zoneinfoElement.NrMapped = vp.PInt64()
case "nr_dirty":
zoneinfoElement.NrDirty = vp.PInt64()
case "nr_writeback":
zoneinfoElement.NrWriteback = vp.PInt64()
case "nr_unevictable":
zoneinfoElement.NrUnevictable = vp.PInt64()
case "nr_shmem":
zoneinfoElement.NrShmem = vp.PInt64()
case "nr_dirtied":
zoneinfoElement.NrDirtied = vp.PInt64()
case "nr_written":
zoneinfoElement.NrWritten = vp.PInt64()
case "numa_hit":
zoneinfoElement.NumaHit = vp.PInt64()
case "numa_miss":
zoneinfoElement.NumaMiss = vp.PInt64()
case "numa_foreign":
zoneinfoElement.NumaForeign = vp.PInt64()
case "numa_interleave":
zoneinfoElement.NumaInterleave = vp.PInt64()
case "numa_local":
zoneinfoElement.NumaLocal = vp.PInt64()
case "numa_other":
zoneinfoElement.NumaOther = vp.PInt64()
case "protection:":
protectionParts := strings.Split(line, ":")
protectionValues := strings.Replace(protectionParts[1], "(", "", 1)
protectionValues = strings.Replace(protectionValues, ")", "", 1)
protectionValues = strings.TrimSpace(protectionValues)
protectionStringMap := strings.Split(protectionValues, ", ")
val, err := util.ParsePInt64s(protectionStringMap)
if err == nil {
zoneinfoElement.Protection = val
}
}
}
zoneinfo = append(zoneinfo, zoneinfoElement)
}
return zoneinfo, nil
}