0083fae453
Unify error handling in apiserver into a single path - RESTStorage objects must provide appropriate errors individually. Ensure ALL errors which can be traced to logical faults with RESTStorage are returned as api.Status objects.
47 lines
1.5 KiB
Go
47 lines
1.5 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 apiserver
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import (
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"github.com/GoogleCloudPlatform/kubernetes/pkg/util"
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)
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// WorkFunc is used to perform any time consuming work for an api call, after
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// the input has been validated. Pass one of these to MakeAsync to create an
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// appropriate return value for the Update, Delete, and Create methods.
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type WorkFunc func() (result interface{}, err error)
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// MakeAsync takes a function and executes it, delivering the result in the way required
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// by RESTStorage's Update, Delete, and Create methods.
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func MakeAsync(fn WorkFunc) <-chan interface{} {
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channel := make(chan interface{})
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go func() {
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defer util.HandleCrash()
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obj, err := fn()
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if err != nil {
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channel <- errToAPIStatus(err)
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} else {
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channel <- obj
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}
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// 'close' is used to signal that no further values will
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// be written to the channel. Not strictly necessary, but
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// also won't hurt.
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close(channel)
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}()
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return channel
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}
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