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dex/vendor/go.etcd.io/etcd/raft/raftpb/confstate.go

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2020-01-31 09:32:00 +00:00
// Copyright 2019 The etcd 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 raftpb
import (
"fmt"
"reflect"
"sort"
)
// Equivalent returns a nil error if the inputs describe the same configuration.
// On mismatch, returns a descriptive error showing the differences.
func (cs ConfState) Equivalent(cs2 ConfState) error {
cs1 := cs
orig1, orig2 := cs1, cs2
s := func(sl *[]uint64) {
*sl = append([]uint64(nil), *sl...)
sort.Slice(*sl, func(i, j int) bool { return (*sl)[i] < (*sl)[j] })
}
for _, cs := range []*ConfState{&cs1, &cs2} {
s(&cs.Voters)
s(&cs.Learners)
s(&cs.VotersOutgoing)
s(&cs.LearnersNext)
cs.XXX_unrecognized = nil
}
if !reflect.DeepEqual(cs1, cs2) {
return fmt.Errorf("ConfStates not equivalent after sorting:\n%+#v\n%+#v\nInputs were:\n%+#v\n%+#v", cs1, cs2, orig1, orig2)
}
return nil
}