70 lines
1.6 KiB
Go
70 lines
1.6 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 errors
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import (
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"sync"
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)
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// UntilErrorConcurrent runs all funcs in separate goroutines, returning the
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// first non-nil error returned from funcs, or nil if all funcs return nil
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func UntilErrorConcurrent(funcs []func() error) error {
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errCh := make(chan error, len(funcs))
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for _, f := range funcs {
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f := f // capture f
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go func() {
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errCh <- f()
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}()
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}
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for i := 0; i < len(funcs); i++ {
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if err := <-errCh; err != nil {
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return err
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}
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}
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return nil
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}
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// AggregateConcurrent runs fns concurrently, returning a NewAggregate if there are > 1 errors
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func AggregateConcurrent(funcs []func() error) error {
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// run all fns concurrently
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ch := make(chan error, len(funcs))
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var wg sync.WaitGroup
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for _, f := range funcs {
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f := f // capture f
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wg.Add(1)
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go func() {
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defer wg.Done()
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ch <- f()
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}()
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}
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wg.Wait()
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close(ch)
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// collect up and return errors
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errs := []error{}
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for err := range ch {
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if err != nil {
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errs = append(errs, err)
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}
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}
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if len(errs) > 1 {
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return NewAggregate(errs)
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} else if len(errs) == 1 {
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return errs[0]
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}
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return nil
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}
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