mirror of https://github.com/k3s-io/k3s
71 lines
2.0 KiB
Go
71 lines
2.0 KiB
Go
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/*
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Copyright 2014 The Kubernetes Authors.
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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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"reflect"
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"sort"
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"sync"
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"k8s.io/klog"
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)
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// All registered credential providers.
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var providersMutex sync.Mutex
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var providers = make(map[string]DockerConfigProvider)
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// RegisterCredentialProvider is called by provider implementations on
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// initialization to register themselves, like so:
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// func init() {
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// RegisterCredentialProvider("name", &myProvider{...})
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// }
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func RegisterCredentialProvider(name string, provider DockerConfigProvider) {
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providersMutex.Lock()
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defer providersMutex.Unlock()
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_, found := providers[name]
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if found {
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klog.Fatalf("Credential provider %q was registered twice", name)
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}
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klog.V(4).Infof("Registered credential provider %q", name)
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providers[name] = provider
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}
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// NewDockerKeyring creates a DockerKeyring to use for resolving credentials,
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// which lazily draws from the set of registered credential providers.
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func NewDockerKeyring() DockerKeyring {
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keyring := &lazyDockerKeyring{
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Providers: make([]DockerConfigProvider, 0),
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}
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keys := reflect.ValueOf(providers).MapKeys()
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stringKeys := make([]string, len(keys))
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for ix := range keys {
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stringKeys[ix] = keys[ix].String()
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}
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sort.Strings(stringKeys)
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for _, key := range stringKeys {
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provider := providers[key]
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if provider.Enabled() {
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klog.V(4).Infof("Registering credential provider: %v", key)
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keyring.Providers = append(keyring.Providers, provider)
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}
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}
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return keyring
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}
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