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Signed-off-by: Lazar Cvetković <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| package driver | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "github.com/vhive-serverless/loader/pkg/common" | ||
| mc "github.com/vhive-serverless/loader/pkg/metric" | ||
| "math" | ||
| "os" | ||
| "sync" | ||
| "time" | ||
| ) | ||
|
|
||
| func (d *Driver) CreateMetricsScrapper(interval time.Duration, | ||
| signalReady *sync.WaitGroup, finishCh chan int, allRecordsWritten *sync.WaitGroup) func() { | ||
| timer := time.NewTicker(interval) | ||
|
|
||
| return func() { | ||
| signalReady.Done() | ||
| knStatRecords := make(chan interface{}, 100) | ||
| scaleRecords := make(chan interface{}, 100) | ||
| writerDone := sync.WaitGroup{} | ||
|
|
||
| clusterUsageFile, err := os.Create(d.outputFilename("cluster_usage")) | ||
| common.Check(err) | ||
| defer clusterUsageFile.Close() | ||
|
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| writerDone.Add(1) | ||
| go d.runCSVWriter(knStatRecords, d.outputFilename("kn_stats"), &writerDone) | ||
|
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| writerDone.Add(1) | ||
| go d.runCSVWriter(scaleRecords, d.outputFilename("deployment_scale"), &writerDone) | ||
|
|
||
| for { | ||
| select { | ||
| case <-timer.C: | ||
| recCluster := mc.ScrapeClusterUsage() | ||
| recCluster.Timestamp = time.Now().UnixMicro() | ||
|
|
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| byteArr, err := json.Marshal(recCluster) | ||
| common.Check(err) | ||
|
|
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| _, err = clusterUsageFile.Write(byteArr) | ||
| common.Check(err) | ||
|
|
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| _, err = clusterUsageFile.WriteString("\n") | ||
| common.Check(err) | ||
|
|
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| recScale := mc.ScrapeDeploymentScales() | ||
| timestamp := time.Now().UnixMicro() | ||
| for _, rec := range recScale { | ||
| rec.Timestamp = timestamp | ||
| scaleRecords <- rec | ||
| } | ||
|
|
||
| recKnative := mc.ScrapeKnStats() | ||
| recKnative.Timestamp = time.Now().UnixMicro() | ||
| knStatRecords <- recKnative | ||
| case <-finishCh: | ||
| close(knStatRecords) | ||
| close(scaleRecords) | ||
|
|
||
| writerDone.Wait() | ||
| allRecordsWritten.Done() | ||
|
|
||
| return | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
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| func (d *Driver) createGlobalMetricsCollector(filename string, collector chan *mc.ExecutionRecord, | ||
| signalReady *sync.WaitGroup, signalEverythingWritten *sync.WaitGroup, totalIssuedChannel chan int64) { | ||
|
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| // NOTE: totalNumberOfInvocations is initialized to MaxInt64 not to allow collector to complete before | ||
| // the end signal is received on totalIssuedChannel, which deliver the total number of issued invocations. | ||
| // This number is known once all the individual function drivers finish issuing invocations and | ||
| // when all the invocations return | ||
| var totalNumberOfInvocations int64 = math.MaxInt64 | ||
| var currentlyWritten int64 | ||
|
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| file, err := os.Create(filename) | ||
| common.Check(err) | ||
| defer file.Close() | ||
|
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| signalReady.Done() | ||
|
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| records := make(chan interface{}, 100) | ||
| writerDone := sync.WaitGroup{} | ||
| writerDone.Add(1) | ||
| go d.runCSVWriter(records, filename, &writerDone) | ||
|
|
||
| for { | ||
| select { | ||
| case record := <-collector: | ||
| records <- record | ||
|
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| currentlyWritten++ | ||
| case record := <-totalIssuedChannel: | ||
| totalNumberOfInvocations = record | ||
| } | ||
|
|
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| if currentlyWritten == totalNumberOfInvocations { | ||
| close(records) | ||
| writerDone.Wait() | ||
| (*signalEverythingWritten).Done() | ||
|
|
||
| return | ||
| } | ||
| } | ||
| } |
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