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kata-monitor: export get stats for sandbox

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Gathering stats for a given sandbox is pretty useful; let's export a
function from katamonitor pkg to do this.

Signed-off-by: Eric Ernst <eric_ernst@apple.com>
This commit is contained in:
Eric Ernst 2021-05-06 11:46:12 -07:00
parent 12a04cb0ba
commit 3787306107
1 changed files with 13 additions and 4 deletions
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17
src/runtime/pkg/kata-monitor/metrics.go
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@ -176,7 +176,7 @@ func (km *KataMonitor) aggregateSandboxMetrics(encoder expfmt.Encoder) error {
for sandboxID, namespace := range sandboxes {
wg.Add(1)
go func(sandboxID, namespace string, results chan<- []*dto.MetricFamily) {
sandboxMetrics, err := getSandboxMetrics(sandboxID)
sandboxMetrics, err := getParsedMetrics(sandboxID)
if err != nil {
monitorLog.WithError(err).WithField("sandbox_id", sandboxID).Errorf("failed to get metrics for sandbox")
}
@ -229,12 +229,11 @@ func (km *KataMonitor) aggregateSandboxMetrics(encoder expfmt.Encoder) error {
return err
}
}
return nil
}
// getSandboxMetrics will get sandbox's metrics from shim
func getSandboxMetrics(sandboxID string) ([]*dto.MetricFamily, error) {
func getParsedMetrics(sandboxID string) ([]*dto.MetricFamily, error) {
body, err := doGet(sandboxID, defaultTimeout, "metrics")
if err != nil {
return nil, err
@ -243,6 +242,16 @@ func getSandboxMetrics(sandboxID string) ([]*dto.MetricFamily, error) {
return parsePrometheusMetrics(sandboxID, body)
}
// GetSandboxMetrics will get sandbox's metrics from shim
func GetSandboxMetrics(sandboxID string) (string, error) {
body, err := doGet(sandboxID, defaultTimeout, "metrics")
if err != nil {
return "", err
}
return string(body), nil
}
// parsePrometheusMetrics will decode metrics from Prometheus text format
// and return array of *dto.MetricFamily with an ASC order
func parsePrometheusMetrics(sandboxID string, body []byte) ([]*dto.MetricFamily, error) {