9cb07d026f
Introduces Rancher's metadata service as an optional provider source for Traefik, enabled by setting `rancher.MetadataService`. The provider uses a long polling technique to watch the metadata service and obtain near instantaneous updates. Alternatively it can be configured to poll the metadata service every `rancher.RefreshSeconds` by setting `rancher.MetadataPoll`. The refactor splits API and metadata service code into separate source files respectively, and specific configuration is deferred to sub-structs. Incorporates bugfix #1414
31 lines
637 B
Go
31 lines
637 B
Go
package main
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import (
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"time"
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"github.com/Sirupsen/logrus"
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"github.com/rancher/go-rancher-metadata/metadata"
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)
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const (
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metadataUrl = "http://rancher-metadata/2015-12-19"
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)
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func main() {
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m := metadata.NewClient(metadataUrl)
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version := "init"
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for {
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newVersion, err := m.GetVersion()
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if err != nil {
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logrus.Errorf("Error reading metadata version: %v", err)
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} else if version == newVersion {
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logrus.Debug("No changes in metadata version")
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} else {
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logrus.Debugf("Metadata version has changed, oldVersion=[%s], newVersion=[%s]", version, newVersion)
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version = newVersion
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}
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time.Sleep(5 * time.Second)
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}
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}
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