53 lines
1.5 KiB
Go
53 lines
1.5 KiB
Go
// Copyright 2020 by the contributors.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package healthcheck
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import (
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"fmt"
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"time"
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)
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// TimeoutError is the error returned when a Timeout-wrapped Check takes too long
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type timeoutError time.Duration
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func (e timeoutError) Error() string {
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return fmt.Sprintf("timed out after %s", time.Duration(e).String())
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}
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// Timeout returns whether this error is a timeout (always true for timeoutError)
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func (e timeoutError) Timeout() bool {
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return true
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}
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// Temporary returns whether this error is temporary (always true for timeoutError)
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func (e timeoutError) Temporary() bool {
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return true
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}
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// Timeout adds a timeout to a Check. If the underlying check takes longer than
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// the timeout, it returns an error.
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func Timeout(check Check, timeout time.Duration) Check {
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return func() error {
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c := make(chan error, 1)
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go func() { c <- check() }()
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select {
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case err := <-c:
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return err
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case <-time.After(timeout):
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return timeoutError(timeout)
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}
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}
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}
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