98 lines
2.7 KiB
Go
98 lines
2.7 KiB
Go
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package internal
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import (
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"bytes"
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"math/rand"
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"time"
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)
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// DatastoreExternalTotals contains overview of external and datastore calls
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// made during a transaction.
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type DatastoreExternalTotals struct {
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externalCallCount uint64
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externalDuration time.Duration
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datastoreCallCount uint64
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datastoreDuration time.Duration
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}
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// TxnEvent represents a transaction.
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// https://source.datanerd.us/agents/agent-specs/blob/master/Transaction-Events-PORTED.md
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// https://newrelic.atlassian.net/wiki/display/eng/Agent+Support+for+Synthetics%3A+Forced+Transaction+Traces+and+Analytic+Events
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type TxnEvent struct {
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Name string
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Timestamp time.Time
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Duration time.Duration
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Queuing time.Duration
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Zone ApdexZone
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Attrs *Attributes
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DatastoreExternalTotals
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}
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// WriteJSON prepares JSON in the format expected by the collector.
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func (e *TxnEvent) WriteJSON(buf *bytes.Buffer) {
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w := jsonFieldsWriter{buf: buf}
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buf.WriteByte('[')
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buf.WriteByte('{')
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w.stringField("type", "Transaction")
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w.stringField("name", e.Name)
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w.floatField("timestamp", timeToFloatSeconds(e.Timestamp))
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w.floatField("duration", e.Duration.Seconds())
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if ApdexNone != e.Zone {
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w.stringField("nr.apdexPerfZone", e.Zone.label())
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}
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if e.Queuing > 0 {
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w.floatField("queueDuration", e.Queuing.Seconds())
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}
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if e.externalCallCount > 0 {
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w.intField("externalCallCount", int64(e.externalCallCount))
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w.floatField("externalDuration", e.externalDuration.Seconds())
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}
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if e.datastoreCallCount > 0 {
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// Note that "database" is used for the keys here instead of
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// "datastore" for historical reasons.
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w.intField("databaseCallCount", int64(e.datastoreCallCount))
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w.floatField("databaseDuration", e.datastoreDuration.Seconds())
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}
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buf.WriteByte('}')
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buf.WriteByte(',')
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userAttributesJSON(e.Attrs, buf, destTxnEvent)
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buf.WriteByte(',')
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agentAttributesJSON(e.Attrs, buf, destTxnEvent)
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buf.WriteByte(']')
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}
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// MarshalJSON is used for testing.
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func (e *TxnEvent) MarshalJSON() ([]byte, error) {
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buf := bytes.NewBuffer(make([]byte, 0, 256))
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e.WriteJSON(buf)
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return buf.Bytes(), nil
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}
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type txnEvents struct {
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events *analyticsEvents
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}
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func newTxnEvents(max int) *txnEvents {
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return &txnEvents{
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events: newAnalyticsEvents(max),
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}
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}
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func (events *txnEvents) AddTxnEvent(e *TxnEvent) {
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stamp := eventStamp(rand.Float32())
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events.events.addEvent(analyticsEvent{stamp, e})
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}
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func (events *txnEvents) MergeIntoHarvest(h *Harvest) {
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h.TxnEvents.events.mergeFailed(events.events)
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}
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func (events *txnEvents) Data(agentRunID string, harvestStart time.Time) ([]byte, error) {
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return events.events.CollectorJSON(agentRunID)
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}
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func (events *txnEvents) numSeen() float64 { return events.events.NumSeen() }
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func (events *txnEvents) numSaved() float64 { return events.events.NumSaved() }
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