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Attach __meta_filepath label to file SD targets.
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ec9c51ab98
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@ -26,8 +26,12 @@ import (
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"gopkg.in/yaml.v2"
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"github.com/prometheus/prometheus/config"
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clientmodel "github.com/prometheus/client_golang/model"
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)
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const FileSDFilepathLabel = clientmodel.MetaLabelPrefix + "filepath"
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// FileDiscovery provides service discovery functionality based
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// on files that contain target groups in JSON or YAML format. Refreshing
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// happens using file watches and periodic refreshes.
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@ -196,7 +200,7 @@ func fileSource(filename string, i int) string {
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// Stop implements the TargetProvider interface.
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func (fd *FileDiscovery) Stop() {
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glog.V(1).Info("Stopping file discovery for %s...", fd.paths)
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glog.V(1).Infof("Stopping file discovery for %s...", fd.paths)
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fd.done <- struct{}{}
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// Closing the watcher will deadlock unless all events and errors are drained.
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@ -215,7 +219,7 @@ func (fd *FileDiscovery) Stop() {
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fd.done <- struct{}{}
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glog.V(1).Info("File discovery for %s stopped.", fd.paths)
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glog.V(1).Infof("File discovery for %s stopped.", fd.paths)
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}
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// readFile reads a JSON or YAML list of targets groups from the file, depending on its
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@ -243,6 +247,9 @@ func readFile(filename string) ([]*config.TargetGroup, error) {
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for i, tg := range targetGroups {
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tg.Source = fileSource(filename, i)
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tg.Labels = clientmodel.LabelSet{
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FileSDFilepathLabel: clientmodel.LabelValue(filename),
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}
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}
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return targetGroups, nil
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}
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