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UPSTREAM: <carry>: kube-apiserver: wire through isTerminating into ha…
…ndler chain UPSTREAM: <carry>: use lifeCycleSignals for isTerminating OpenShift-Rebase-Source: a736659
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/* | ||
Copyright 2021 The Kubernetes Authors. | ||
Licensed under the Apache License, Version 2.0 (the "License"); | ||
you may not use this file except in compliance with the License. | ||
You may obtain a copy of the License at | ||
http://www.apache.org/licenses/LICENSE-2.0 | ||
Unless required by applicable law or agreed to in writing, software | ||
distributed under the License is distributed on an "AS IS" BASIS, | ||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
See the License for the specific language governing permissions and | ||
limitations under the License. | ||
*/ | ||
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package server | ||
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// newIsTerminatingFunc returns a 'func() bool' that relies on the | ||
// 'ShutdownInitiated' life cycle signal of answer if the apiserver | ||
// has started the termination process. | ||
func (c *Config) newIsTerminatingFunc() func() bool { | ||
var shutdownCh <-chan struct{} | ||
// TODO: a properly initialized Config object should always have lifecycleSignals | ||
// initialized, but some config unit tests leave lifecycleSignals as nil. | ||
// Fix the unit tests upstream and then we can remove this check. | ||
if c.lifecycleSignals.ShutdownInitiated != nil { | ||
shutdownCh = c.lifecycleSignals.ShutdownInitiated.Signaled() | ||
} | ||
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return func() bool { | ||
select { | ||
case <-shutdownCh: | ||
return true | ||
default: | ||
return false | ||
} | ||
} | ||
} |
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