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Export metric server metrics.

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PiperOrigin-RevId: 511305940
This commit is contained in:
Etienne Perot
2023-02-21 14:29:42 -08:00
committed by gVisor bot
parent 81d6f80caf
commit f7a3a23d30
1 changed files with 25 additions and 13 deletions
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runsc/cmd/metric_server.go
+25 -13
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@@ -463,48 +463,60 @@ func (m *MetricServer) serveIndex(w http.ResponseWriter, req *http.Request) http
// Metrics generated by the metrics server itself.
var (
sandboxPresenceMetric = prometheus.Metric{
SandboxPresenceMetric = prometheus.Metric{
Name: "sandbox_presence",
Type: prometheus.TypeGauge,
Help: "Boolean metric set to 1 for each known sandbox.",
}
sandboxRunningMetric = prometheus.Metric{
SandboxRunningMetric = prometheus.Metric{
Name: "sandbox_running",
Type: prometheus.TypeGauge,
Help: "Boolean metric set to 1 for each running sandbox.",
}
sandboxMetadataMetric = prometheus.Metric{
SandboxMetadataMetric = prometheus.Metric{
Name: "sandbox_metadata",
Type: prometheus.TypeGauge,
Help: "Key-value pairs about per-sandbox metadata.",
}
sandboxCreationMetric = prometheus.Metric{
SandboxCreationMetric = prometheus.Metric{
Name: "sandbox_creation_time_seconds",
Type: prometheus.TypeGauge,
Help: "When the sandbox was created, as a unix timestamp in milliseconds.",
}
numRunningSandboxesMetric = prometheus.Metric{
NumRunningSandboxesMetric = prometheus.Metric{
Name: "num_sandboxes_running",
Type: prometheus.TypeGauge,
Help: "Number of sandboxes running at present.",
}
numCannotExportSandboxesMetric = prometheus.Metric{
NumCannotExportSandboxesMetric = prometheus.Metric{
Name: "num_sandboxes_broken_metrics",
Type: prometheus.TypeGauge,
Help: "Number of sandboxes from which we cannot export metrics.",
}
numTotalSandboxesMetric = prometheus.Metric{
NumTotalSandboxesMetric = prometheus.Metric{
Name: "num_sandboxes_total",
Type: prometheus.TypeCounter,
Help: "Counter of sandboxes that have ever been started.",
}
processStartTimeMetric = prometheus.Metric{
ProcessStartTimeMetric = prometheus.Metric{
Name: "process_start_time_seconds",
Type: prometheus.TypeGauge,
Help: "Unix timestamp at which the process started. Used by Prometheus for counter resets.",
}
)
// ServerMetrics is a list of metrics that the metric server generates.
var ServerMetrics = []prometheus.Metric{
SandboxPresenceMetric,
SandboxRunningMetric,
SandboxMetadataMetric,
SandboxCreationMetric,
NumRunningSandboxesMetric,
NumCannotExportSandboxesMetric,
NumTotalSandboxesMetric,
ProcessStartTimeMetric,
}
// serveMetrics serves metrics requests.
func (m *MetricServer) serveMetrics(w http.ResponseWriter, req *http.Request) httpResult {
ctx, ctxCancel := context.WithTimeout(req.Context(), metricsExportTimeout)
@@ -616,16 +628,16 @@ func (m *MetricServer) serveMetrics(w http.ResponseWriter, req *http.Request) ht
func() {
metricsMu.Lock()
defer metricsMu.Unlock()
selfMetrics.Add(prometheus.LabeledIntData(&sandboxPresenceMetric, served.extraLabels, 1))
selfMetrics.Add(prometheus.LabeledIntData(&SandboxPresenceMetric, served.extraLabels, 1))
sandboxRunning := int64(0)
if isRunning {
sandboxRunning = 1
meta.numRunningSandboxes++
}
selfMetrics.Add(prometheus.LabeledIntData(&sandboxRunningMetric, served.extraLabels, sandboxRunning))
selfMetrics.Add(prometheus.LabeledIntData(&SandboxRunningMetric, served.extraLabels, sandboxRunning))
if loadErr == nil {
selfMetrics.Add(prometheus.LabeledIntData(&sandboxMetadataMetric, served.labelsWithMetadata, 1))
selfMetrics.Add(prometheus.LabeledFloatData(&sandboxCreationMetric, served.extraLabels, float64(served.createdAt.Unix())+(float64(served.createdAt.Nanosecond())/1e9)))
selfMetrics.Add(prometheus.LabeledIntData(&SandboxMetadataMetric, served.labelsWithMetadata, 1))
selfMetrics.Add(prometheus.LabeledFloatData(&SandboxCreationMetric, served.extraLabels, float64(served.createdAt.Unix())+(float64(served.createdAt.Nanosecond())/1e9)))
}
if sandboxErr != nil {
// If the sandbox isn't running, it is normal that metrics are not exported for it, so
@@ -659,7 +671,7 @@ func (m *MetricServer) serveMetrics(w http.ResponseWriter, req *http.Request) ht
ExporterPrefix: fmt.Sprintf("%smeta_", m.exporterPrefix),
}
processMetrics := prometheus.NewSnapshot()
processMetrics.Add(prometheus.NewFloatData(&processStartTimeMetric, float64(m.startTime.Unix())+(float64(m.startTime.Nanosecond())/1e9)))
processMetrics.Add(prometheus.NewFloatData(&ProcessStartTimeMetric, float64(m.startTime.Unix())+(float64(m.startTime.Nanosecond())/1e9)))
snapshotsToOptions[processMetrics] = prometheus.SnapshotExportOptions{
// These metrics must be written without any prefix.
}