mirror of https://github.com/knative/pkg.git
66 lines
1.7 KiB
Go
66 lines
1.7 KiB
Go
/*
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Copyright 2018 The Knative 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 configmap
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import (
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"fmt"
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corev1 "k8s.io/api/core/v1"
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)
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// NewFixedWatcher returns a StaticWatcher that exposes a collection of ConfigMaps.
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//
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// Deprecated: Use NewStaticWatcher
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func NewFixedWatcher(cms ...*corev1.ConfigMap) *StaticWatcher {
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return NewStaticWatcher(cms...)
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}
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// NewStaticWatcher returns an StaticWatcher that exposes a collection of ConfigMaps.
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func NewStaticWatcher(cms ...*corev1.ConfigMap) *StaticWatcher {
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cmm := make(map[string]*corev1.ConfigMap)
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for _, cm := range cms {
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cmm[cm.Name] = cm
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}
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return &StaticWatcher{cfgs: cmm}
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}
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// StaticWatcher is a Watcher with static ConfigMaps. Callbacks will
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// occur when Watch is invoked for a specific Observer
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type StaticWatcher struct {
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cfgs map[string]*corev1.ConfigMap
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}
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// Asserts that fixedImpl implements Watcher.
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var _ Watcher = (*StaticWatcher)(nil)
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// Watch implements Watcher
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func (di *StaticWatcher) Watch(name string, o ...Observer) {
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cm, ok := di.cfgs[name]
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if ok {
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for _, observer := range o {
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observer(cm)
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}
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} else {
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panic(fmt.Sprintf("Tried to watch unknown config with name %q", name))
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}
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}
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// Start implements Watcher
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func (di *StaticWatcher) Start(<-chan struct{}) error {
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return nil
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}
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