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Merge pull request #158 from linux-on-ibm-z/cross-compile

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Edited Makefile to add cross build support for s390x.

Adding External Metrics Provider
This commit is contained in:
Solly Ross 2019-01-31 13:23:24 -08:00 • committed by John Delivuk
commit c2e176bb23
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17 changed files with 1913 additions and 1 deletions
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36
cmd/adapter/adapter.go
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@ -41,6 +41,7 @@ import (
mprom "github.com/directxman12/k8s-prometheus-adapter/pkg/client/metrics"
adaptercfg "github.com/directxman12/k8s-prometheus-adapter/pkg/config"
cmprov "github.com/directxman12/k8s-prometheus-adapter/pkg/custom-provider"
extprov "github.com/directxman12/k8s-prometheus-adapter/pkg/external-provider"
resprov "github.com/directxman12/k8s-prometheus-adapter/pkg/resourceprovider"
)
@ -171,6 +172,30 @@ func (cmd *PrometheusAdapter) makeProvider(promClient prom.Client, stopCh <-chan
return cmProvider, nil
}
func (cmd *PrometheusAdapter) makeExternalProvider(promClient prom.Client, stopCh <-chan struct{}) (provider.ExternalMetricsProvider, error) {
if len(cmd.metricsConfig.ExternalRules) == 0 {
return nil, nil
}
// grab the mapper
mapper, err := cmd.RESTMapper()
if err != nil {
return nil, fmt.Errorf("unable to construct RESTMapper: %v", err)
}
// collect series converters for adapter
converters, errs := extprov.ConvertersFromConfig(cmd.metricsConfig, mapper)
if len(errs) > 0 {
return nil, fmt.Errorf("unable to construct naming scheme from metrics rules: %v", errs)
}
// construct the provider and start it
emProvider, runner := extprov.NewExternalPrometheusProvider(mapper, promClient, converters, cmd.MetricsRelistInterval)
runner.RunUntil(stopCh)
return emProvider, nil
}
func (cmd *PrometheusAdapter) addResourceMetricsAPI(promClient prom.Client) error {
if cmd.metricsConfig.ResourceRules == nil {
// bail if we don't have rules for setting things up
@ -247,6 +272,17 @@ func main() {
cmd.WithCustomMetrics(cmProvider)
}
// construct the external provider
emProvider, err := cmd.makeExternalProvider(promClient, wait.NeverStop)
if err != nil {
glog.Fatalf("unable to construct external metrics provider: %v", err)
}
// attach the provider to the server, if it's needed
if emProvider != nil {
cmd.WithExternalMetrics(emProvider)
}
// attach resource metrics support, if it's needed
if err := cmd.addResourceMetricsAPI(promClient); err != nil {
glog.Fatalf("unable to install resource metrics API: %v", err)