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Add cursor metrics to mongodb input (#4114)

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This commit is contained in:
Jake Champlin
2018-05-07 18:00:24 -04:00
committed by Daniel Nelson
parent 4bfc955f79
commit d56db64dc6
4 changed files with 49 additions and 5 deletions
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36
plugins/inputs/mongodb/mongostat.go
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@@ -289,7 +289,8 @@ type OpcountStats struct {
// MetricsStats stores information related to metrics
type MetricsStats struct {
TTL *TTLStats `bson:"ttl"`
TTL *TTLStats `bson:"ttl"`
Cursor *CursorStats `bson:"cursor"`
}
// TTLStats stores information related to documents with a ttl index.
@@ -298,6 +299,19 @@ type TTLStats struct {
Passes int64 `bson:"passes"`
}
// CursorStats stores information related to cursor metrics.
type CursorStats struct {
TimedOut int64 `bson:"timedOut"`
Open *OpenCursorStats `bson:"open"`
}
// OpenCursorStats stores information related to open cursor metrics
type OpenCursorStats struct {
NoTimeout int64 `bson:"noTimeout"`
Pinned int64 `bson:"pinned"`
Total int64 `bson:"total"`
}
// ReadWriteLockTimes stores time spent holding read/write locks.
type ReadWriteLockTimes struct {
Read int64 `bson:"R"`
@@ -439,6 +453,10 @@ type StatLine struct {
// TTL fields
Passes, DeletedDocuments int64
// Cursor fields
TimedOutC int64
NoTimeoutC, PinnedC, TotalC int64
// Collection locks (3.0 mmap only)
CollectionLocks *CollectionLockStatus
@@ -582,9 +600,19 @@ func NewStatLine(oldMongo, newMongo MongoStatus, key string, all bool, sampleSec
returnVal.Command = diff(newStat.Opcounters.Command, oldStat.Opcounters.Command, sampleSecs)
}
if newStat.Metrics != nil && newStat.Metrics.TTL != nil && oldStat.Metrics != nil && oldStat.Metrics.TTL != nil {
returnVal.Passes = diff(newStat.Metrics.TTL.Passes, oldStat.Metrics.TTL.Passes, sampleSecs)
returnVal.DeletedDocuments = diff(newStat.Metrics.TTL.DeletedDocuments, oldStat.Metrics.TTL.DeletedDocuments, sampleSecs)
if newStat.Metrics != nil && oldStat.Metrics != nil {
if newStat.Metrics.TTL != nil && oldStat.Metrics.TTL != nil {
returnVal.Passes = diff(newStat.Metrics.TTL.Passes, oldStat.Metrics.TTL.Passes, sampleSecs)
returnVal.DeletedDocuments = diff(newStat.Metrics.TTL.DeletedDocuments, oldStat.Metrics.TTL.DeletedDocuments, sampleSecs)
}
if newStat.Metrics.Cursor != nil && oldStat.Metrics.Cursor != nil {
returnVal.TimedOutC = diff(newStat.Metrics.Cursor.TimedOut, oldStat.Metrics.Cursor.TimedOut, sampleSecs)
if newStat.Metrics.Cursor.Open != nil && oldStat.Metrics.Cursor.Open != nil {
returnVal.NoTimeoutC = diff(newStat.Metrics.Cursor.Open.NoTimeout, oldStat.Metrics.Cursor.Open.NoTimeout, sampleSecs)
returnVal.PinnedC = diff(newStat.Metrics.Cursor.Open.Pinned, oldStat.Metrics.Cursor.Open.Pinned, sampleSecs)
returnVal.TotalC = diff(newStat.Metrics.Cursor.Open.Total, oldStat.Metrics.Cursor.Open.Total, sampleSecs)
}
}
}
if newStat.OpcountersRepl != nil && oldStat.OpcountersRepl != nil {