55 lines
1.6 KiB
Go
55 lines
1.6 KiB
Go
/*
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Copyright 2020 the Velero contributors.
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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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// TODO(2.0) After converting all controllers to runttime-controller,
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// the functions in this file will no longer be needed and should be removed.
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package managercontroller
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import (
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"context"
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"sigs.k8s.io/controller-runtime/pkg/manager"
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"github.com/vmware-tanzu/velero/pkg/controller"
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)
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// Runnable will turn a "regular" runnable component (such as a controller)
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// into a controller-runtime Runnable
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func Runnable(p controller.Interface, numWorkers int) manager.Runnable {
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f := func(stop <-chan struct{}) error {
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// Create a cancel context for handling the stop signal.
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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// If a signal is received on the stop channel, cancel the
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// context. This will propagate the cancel into the p.Run
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// function below.
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go func() {
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select {
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case <-stop:
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cancel()
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case <-ctx.Done():
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}
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}()
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// This is a blocking call that either completes
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// or is cancellable on receiving a stop signal.
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return p.Run(ctx, numWorkers)
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}
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return manager.RunnableFunc(f)
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}
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