func (events *analyticsEvents) CollectorJSON(agentRunID string) ([]byte, error) {
if 0 == events.numSeen {
return nil, nil
}
estimate := 256 * len(events.events)
buf := bytes.NewBuffer(make([]byte, 0, estimate))
buf.WriteByte('[')
jsonx.AppendString(buf, agentRunID)
buf.WriteByte(',')
buf.WriteByte('{')
buf.WriteString(`"reservoir_size":`)
jsonx.AppendUint(buf, uint64(cap(events.events)))
buf.WriteByte(',')
buf.WriteString(`"events_seen":`)
jsonx.AppendUint(buf, uint64(events.numSeen))
buf.WriteByte('}')
buf.WriteByte(',')
buf.WriteByte('[')
for i, e := range events.events {
if i > 0 {
buf.WriteByte(',')
}
e.WriteJSON(buf)
}
buf.WriteByte(']')
buf.WriteByte(']')
return buf.Bytes(), nil
}
func (w *jsonFieldsWriter) addKey(key string) {
if w.needsComma {
w.buf.WriteByte(',')
} else {
w.needsComma = true
}
// defensively assume that the key needs escaping:
jsonx.AppendString(w.buf, key)
w.buf.WriteByte(':')
}
func (slow *slowQuery) WriteJSON(buf *bytes.Buffer) {
buf.WriteByte('[')
jsonx.AppendString(buf, slow.TxnName)
buf.WriteByte(',')
jsonx.AppendString(buf, slow.TxnURL)
buf.WriteByte(',')
jsonx.AppendInt(buf, int64(makeSlowQueryID(slow.ParameterizedQuery)))
buf.WriteByte(',')
jsonx.AppendString(buf, slow.ParameterizedQuery)
buf.WriteByte(',')
jsonx.AppendString(buf, slow.DatastoreMetric)
buf.WriteByte(',')
jsonx.AppendInt(buf, int64(slow.Count))
buf.WriteByte(',')
jsonx.AppendFloat(buf, slow.Total.Seconds()*1000.0)
buf.WriteByte(',')
jsonx.AppendFloat(buf, slow.Min.Seconds()*1000.0)
buf.WriteByte(',')
jsonx.AppendFloat(buf, slow.Duration.Seconds()*1000.0)
buf.WriteByte(',')
w := jsonFieldsWriter{buf: buf}
buf.WriteByte('{')
if "" != slow.Host {
w.stringField("host", slow.Host)
}
if "" != slow.PortPathOrID {
w.stringField("port_path_or_id", slow.PortPathOrID)
}
if "" != slow.DatabaseName {
w.stringField("database_name", slow.DatabaseName)
}
if nil != slow.StackTrace {
w.writerField("backtrace", slow.StackTrace)
}
if nil != slow.QueryParameters {
w.writerField("query_parameters", slow.QueryParameters)
}
buf.WriteByte('}')
buf.WriteByte(']')
}
func printNodeStart(buf *bytes.Buffer, n nodeDetails) {
// time.Seconds() is intentionally not used here. Millisecond
// precision is enough.
relativeStartMillis := n.relativeStart.Nanoseconds() / (1000 * 1000)
relativeStopMillis := n.relativeStop.Nanoseconds() / (1000 * 1000)
buf.WriteByte('[')
jsonx.AppendInt(buf, relativeStartMillis)
buf.WriteByte(',')
jsonx.AppendInt(buf, relativeStopMillis)
buf.WriteByte(',')
jsonx.AppendString(buf, n.name)
buf.WriteByte(',')
if nil == n.params {
buf.WriteString("{}")
} else {
n.params.WriteJSON(buf)
}
buf.WriteByte(',')
buf.WriteByte('[')
}
func (w *jsonFieldsWriter) stringField(key string, val string) {
w.addKey(key)
jsonx.AppendString(w.buf, val)
}