0c5d9ed0d2
This change refactors the way Kubelet's DockerPuller handles the docker config credentials to utilize a new credentialprovider library. The credentialprovider library is based on several of the files from the Kubelet's dockertools directory, but supports a new pluggable model for retrieving a .dockercfg-compatible JSON blob with credentials. With this change, the Kubelet will lazily ask for the docker config from a set of DockerConfigProvider extensions each time it needs a credential. This change provides common implementations of DockerConfigProvider for: - "Default": load .dockercfg from disk - "Caching": wraps another provider in a cache that expires after a pre-specified lifetime. GCP-only: - "google-dockercfg": reads a .dockercfg from a GCE instance's metadata - "google-dockercfg-url": reads a .dockercfg from a URL specified in a GCE instance's metadata. - "google-container-registry": reads an access token from GCE metadata into a password field.
63 lines
1.4 KiB
Go
63 lines
1.4 KiB
Go
/*
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Copyright 2014 Google Inc. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package credentialprovider
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import (
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"testing"
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"time"
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)
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func TestCachingProvider(t *testing.T) {
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provider := &testProvider{
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Count: 0,
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}
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cache := &CachingDockerConfigProvider{
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Provider: provider,
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Lifetime: 1 * time.Second,
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}
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if provider.Count != 0 {
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t.Errorf("Unexpected number of Provide calls: %v", provider.Count)
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}
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cache.Provide()
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cache.Provide()
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cache.Provide()
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cache.Provide()
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if provider.Count != 1 {
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t.Errorf("Unexpected number of Provide calls: %v", provider.Count)
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}
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time.Sleep(cache.Lifetime)
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cache.Provide()
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cache.Provide()
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cache.Provide()
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cache.Provide()
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if provider.Count != 2 {
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t.Errorf("Unexpected number of Provide calls: %v", provider.Count)
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}
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time.Sleep(cache.Lifetime)
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cache.Provide()
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cache.Provide()
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cache.Provide()
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cache.Provide()
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if provider.Count != 3 {
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t.Errorf("Unexpected number of Provide calls: %v", provider.Count)
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}
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}
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