49 lines
1.3 KiB
Go
49 lines
1.3 KiB
Go
/*
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Copyright 2019 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 utils
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import (
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"time"
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)
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// MiB represents megabate (2^20) multiplier
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const MiB = 1024 * 1024
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// NothingReturned is a no-value marker returned by GetStringFromChan
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// and GetStringFromChanImmediately functions
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const NothingReturned = "Nothing returned"
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// GetStringFromChan returns a value from channel or NothingReturned if no value in channel after timeout of 100 ms.
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func GetStringFromChan(c chan string) string {
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select {
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case val := <-c:
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return val
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case <-time.After(100 * time.Millisecond):
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return NothingReturned
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}
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}
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// GetStringFromChanImmediately returns a value from channel or NothingReturned if no value in channel.
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func GetStringFromChanImmediately(c chan string) string {
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select {
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case val := <-c:
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return val
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default:
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return NothingReturned
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}
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}
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