92 lines
3.1 KiB
Go
92 lines
3.1 KiB
Go
package logmower
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import (
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"context"
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"fmt"
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"log"
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"net/url"
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"time"
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ms "git.k-space.ee/k-space/logmower-shipper/pkg/mongoStruct"
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prom "github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/promauto"
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mongoEvent "go.mongodb.org/mongo-driver/event"
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"go.mongodb.org/mongo-driver/mongo"
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mongoOpt "go.mongodb.org/mongo-driver/mongo/options"
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)
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var (
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promDbHeartbeat = promauto.NewHistogramVec(prom.HistogramOpts{
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Namespace: PrometheusPrefix,
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Subsystem: "database",
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Name: "heartbeat_time",
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Help: "Time in seconds for succeeded heartbeat, or 0 on failure",
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Buckets: []float64{0.1, 0.2, 0.5, 1, 5, 10, 50},
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}, []string{"connection_id"})
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promDbCmd = promauto.NewHistogramVec(prom.HistogramOpts{
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Namespace: PrometheusPrefix,
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Subsystem: "database",
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Name: "operation_latency", // "command_time",
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Help: "Time in seconds of commands",
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Buckets: []float64{0.1, 0.2, 0.5, 1, 5, 10, 50},
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}, []string{"connection_id", "command_name"})
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promDbCmdErr = promauto.NewCounterVec(prom.CounterOpts{
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Namespace: PrometheusPrefix,
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Subsystem: "database",
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Name: "errors",
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Help: "Failed commands (also reflected elsewhere)",
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}, []string{"connection_id", "command_name"})
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)
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func mongoMonitoredClientOptions() *mongoOpt.ClientOptions {
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return mongoOpt.Client().
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SetServerMonitor(&mongoEvent.ServerMonitor{
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ServerHeartbeatSucceeded: func(ev *mongoEvent.ServerHeartbeatSucceededEvent) {
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promDbHeartbeat.WithLabelValues(ev.ConnectionID).Observe(time.Duration(ev.DurationNanos).Seconds())
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},
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ServerHeartbeatFailed: func(ev *mongoEvent.ServerHeartbeatFailedEvent) {
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promDbHeartbeat.WithLabelValues(ev.ConnectionID).Observe(0)
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log.Printf("database heartbeat failed on connection %q: %e", ev.ConnectionID, ev.Failure)
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},
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}).
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SetMonitor(&mongoEvent.CommandMonitor{
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Succeeded: func(_ context.Context, ev *mongoEvent.CommandSucceededEvent) {
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promDbCmd.WithLabelValues(ev.ConnectionID, ev.CommandName).Observe(time.Duration(ev.DurationNanos).Seconds())
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},
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Failed: func(_ context.Context, ev *mongoEvent.CommandFailedEvent) {
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promDbCmd.WithLabelValues(ev.ConnectionID, ev.CommandName).Observe(time.Duration(ev.DurationNanos).Seconds())
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promDbCmdErr.WithLabelValues(ev.ConnectionID, ev.CommandName).Add(1)
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},
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})
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}
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func initDatabase(ctx context.Context, uri string) (*mongo.Collection, error) {
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uriParsed, err := url.ParseRequestURI(uri)
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if err != nil {
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return nil, fmt.Errorf("parsing URI for database name: %w", err)
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}
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uriParsed.Path = uriParsed.Path[1:] // remove leading slash
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if uriParsed.Path == "" {
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return nil, fmt.Errorf("URI must include database name (as database to authenticate against)")
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}
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dbOpt := mongoMonitoredClientOptions().ApplyURI(uri)
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dbClient, err := mongo.Connect(mongoTimeoutCtx(ctx))
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if err != nil {
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return nil, fmt.Errorf("connecting to %q: %w", dbOpt.GetURI(), err)
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}
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col := dbClient.Database(uriParsed.Path).Collection("logs")
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if err := ms.InitializeIndexes(mongoTimeoutCtx(ctx), col); err != nil {
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return nil, fmt.Errorf("initializing indexes: %w", err)
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}
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return col, nil
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}
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