// publishMetricsOnce is invoked by the ticker to periodically publish metrics to backend.
func (cs *clientServer) publishMetricsOnce() {
metadata, taskMetrics, err := cs.statsEngine.GetInstanceMetrics()
if err != nil {
log.Warn("Error getting instance metrics", "err", err)
return
}
if *metadata.Idle {
// Idle instance, send message and return.
cs.MakeRequest(ecstcs.NewPublishMetricsRequest(metadata, taskMetrics))
return
}
var messageTaskMetrics []*ecstcs.TaskMetric
for i := range taskMetrics {
messageTaskMetrics = append(messageTaskMetrics, taskMetrics[i])
if (i+1)%tasksInMessage == 0 {
// Construct payload with tasksInMessage number of task metrics and send to backend.
cs.MakeRequest(ecstcs.NewPublishMetricsRequest(metadata, messageTaskMetrics))
messageTaskMetrics = messageTaskMetrics[:0]
}
}
if len(messageTaskMetrics) > 0 {
// Send remaining task metrics to backend.
cs.MakeRequest(ecstcs.NewPublishMetricsRequest(metadata, messageTaskMetrics))
}
}
// metricsToPublishMetricRequests gets task metrics and converts them to a list of PublishMetricRequest
// objects.
func (cs *clientServer) metricsToPublishMetricRequests() ([]*ecstcs.PublishMetricsRequest, error) {
metadata, taskMetrics, err := cs.statsEngine.GetInstanceMetrics()
if err != nil {
return nil, err
}
var requests []*ecstcs.PublishMetricsRequest
if *metadata.Idle {
metadata.Fin = aws.Boolean(true)
// Idle instance, we have only one request to send to backend.
requests = append(requests, ecstcs.NewPublishMetricsRequest(metadata, taskMetrics))
return requests, nil
}
var messageTaskMetrics []*ecstcs.TaskMetric
numTasks := len(taskMetrics)
for i, taskMetric := range taskMetrics {
messageTaskMetrics = append(messageTaskMetrics, taskMetric)
var requestMetadata *ecstcs.MetricsMetadata
if (i + 1) == numTasks {
// If this is the last task to send, set fin to true
requestMetadata = copyMetricsMetadata(metadata, true)
} else {
requestMetadata = copyMetricsMetadata(metadata, false)
}
if (i+1)%tasksInMessage == 0 {
// Construct payload with tasksInMessage number of task metrics and send to backend.
requests = append(requests, ecstcs.NewPublishMetricsRequest(requestMetadata, copyTaskMetrics(messageTaskMetrics)))
messageTaskMetrics = messageTaskMetrics[:0]
}
}
if len(messageTaskMetrics) > 0 {
// Create the new metadata object and set fin to true as this is the last message in the payload.
requestMetadata := copyMetricsMetadata(metadata, true)
// Create a request with remaining task metrics.
requests = append(requests, ecstcs.NewPublishMetricsRequest(requestMetadata, messageTaskMetrics))
}
return requests, nil
}