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153 lines
4.1 KiB
153 lines
4.1 KiB
// Copyright (c) 2017 Couchbase, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package scorch
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import (
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"encoding/json"
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"reflect"
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"sync/atomic"
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)
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// Stats tracks statistics about the index, fields that are
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// prefixed like CurXxxx are gauges (can go up and down),
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// and fields that are prefixed like TotXxxx are monotonically
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// increasing counters.
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type Stats struct {
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TotUpdates uint64
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TotDeletes uint64
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TotBatches uint64
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TotBatchesEmpty uint64
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TotBatchIntroTime uint64
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MaxBatchIntroTime uint64
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CurRootEpoch uint64
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LastPersistedEpoch uint64
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LastMergedEpoch uint64
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TotOnErrors uint64
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TotAnalysisTime uint64
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TotIndexTime uint64
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TotIndexedPlainTextBytes uint64
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TotTermSearchersStarted uint64
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TotTermSearchersFinished uint64
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TotEventTriggerStarted uint64
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TotEventTriggerCompleted uint64
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TotIntroduceLoop uint64
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TotIntroduceSegmentBeg uint64
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TotIntroduceSegmentEnd uint64
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TotIntroducePersistBeg uint64
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TotIntroducePersistEnd uint64
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TotIntroduceMergeBeg uint64
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TotIntroduceMergeEnd uint64
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TotIntroduceRevertBeg uint64
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TotIntroduceRevertEnd uint64
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TotIntroducedItems uint64
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TotIntroducedSegmentsBatch uint64
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TotIntroducedSegmentsMerge uint64
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TotPersistLoopBeg uint64
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TotPersistLoopErr uint64
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TotPersistLoopProgress uint64
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TotPersistLoopWait uint64
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TotPersistLoopWaitNotified uint64
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TotPersistLoopEnd uint64
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TotPersistedItems uint64
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TotItemsToPersist uint64
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TotPersistedSegments uint64
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TotPersisterSlowMergerPause uint64
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TotPersisterSlowMergerResume uint64
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TotPersisterNapPauseCompleted uint64
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TotPersisterMergerNapBreak uint64
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TotFileMergeLoopBeg uint64
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TotFileMergeLoopErr uint64
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TotFileMergeLoopEnd uint64
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TotFileMergeForceOpsStarted uint64
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TotFileMergeForceOpsCompleted uint64
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TotFileMergePlan uint64
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TotFileMergePlanErr uint64
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TotFileMergePlanNone uint64
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TotFileMergePlanOk uint64
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TotFileMergePlanTasks uint64
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TotFileMergePlanTasksDone uint64
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TotFileMergePlanTasksErr uint64
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TotFileMergePlanTasksSegments uint64
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TotFileMergePlanTasksSegmentsEmpty uint64
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TotFileMergeSegmentsEmpty uint64
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TotFileMergeSegments uint64
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TotFileSegmentsAtRoot uint64
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TotFileMergeWrittenBytes uint64
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TotFileMergeZapBeg uint64
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TotFileMergeZapEnd uint64
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TotFileMergeZapTime uint64
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MaxFileMergeZapTime uint64
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TotFileMergeZapIntroductionTime uint64
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MaxFileMergeZapIntroductionTime uint64
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TotFileMergeIntroductions uint64
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TotFileMergeIntroductionsDone uint64
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TotFileMergeIntroductionsSkipped uint64
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TotFileMergeIntroductionsObsoleted uint64
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CurFilesIneligibleForRemoval uint64
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TotSnapshotsRemovedFromMetaStore uint64
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TotMemMergeBeg uint64
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TotMemMergeErr uint64
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TotMemMergeDone uint64
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TotMemMergeZapBeg uint64
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TotMemMergeZapEnd uint64
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TotMemMergeZapTime uint64
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MaxMemMergeZapTime uint64
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TotMemMergeSegments uint64
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TotMemorySegmentsAtRoot uint64
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}
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// atomically populates the returned map
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func (s *Stats) ToMap() map[string]interface{} {
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m := map[string]interface{}{}
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sve := reflect.ValueOf(s).Elem()
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svet := sve.Type()
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for i := 0; i < svet.NumField(); i++ {
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svef := sve.Field(i)
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if svef.CanAddr() {
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svefp := svef.Addr().Interface()
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m[svet.Field(i).Name] = atomic.LoadUint64(svefp.(*uint64))
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}
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}
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return m
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}
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// MarshalJSON implements json.Marshaler, and in contrast to standard
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// json marshaling provides atomic safety
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func (s *Stats) MarshalJSON() ([]byte, error) {
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return json.Marshal(s.ToMap())
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}
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