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Refactor into dual Rancher API/Metadata providers

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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
This commit is contained in:
Martin Baillie 2017-05-08 11:20:38 +10:00 • committed by Ludovic Fernandez
parent 984ea1040f
commit 9cb07d026f
14 changed files with 1006 additions and 272 deletions
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23
cmd/traefik/traefik.go
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@ -20,6 +20,7 @@ import (
"github.com/containous/traefik/cluster"
"github.com/containous/traefik/log"
"github.com/containous/traefik/provider/kubernetes"
"github.com/containous/traefik/provider/rancher"
"github.com/containous/traefik/safe"
"github.com/containous/traefik/server"
"github.com/containous/traefik/types"
@ -193,6 +194,28 @@ func run(traefikConfiguration *server.TraefikConfiguration) {
globalConfiguration.DefaultEntryPoints = []string{"http"}
}
if globalConfiguration.Rancher != nil {
// Ensure backwards compatibility for now
if len(globalConfiguration.Rancher.AccessKey) > 0 ||
len(globalConfiguration.Rancher.Endpoint) > 0 ||
len(globalConfiguration.Rancher.SecretKey) > 0 {
if globalConfiguration.Rancher.API == nil {
globalConfiguration.Rancher.API = &rancher.APIConfiguration{
AccessKey: globalConfiguration.Rancher.AccessKey,
SecretKey: globalConfiguration.Rancher.SecretKey,
Endpoint: globalConfiguration.Rancher.Endpoint,
}
}
log.Warn("Deprecated configuration found: rancher.[accesskey|secretkey|endpoint]. " +
"Please use rancher.api.[accesskey|secretkey|endpoint] instead.")
}
if globalConfiguration.Rancher.Metadata != nil && len(globalConfiguration.Rancher.Metadata.Prefix) == 0 {
globalConfiguration.Rancher.Metadata.Prefix = "latest"
}
}
if globalConfiguration.Debug {
globalConfiguration.LogLevel = "DEBUG"
}