common/sync/parallel/consumers.go

// Copyright 2016 The LUCI 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.

package parallel

// Must can be used to consume the channel from Run. It asserts that none of
// the functions run return an error. If one returns non-nil, this will panic
// with the first error encountered (which may cause the channel to remain open
// and unprocessed, blocking other tasks).
func Must(ch <-chan error) {
	for err := range ch {
		if err != nil {
			panic(err)
		}
	}
}

// Ignore can be used to consume the channel from Run. It blocks on all errors
// in the channel and discards them.
func Ignore(ch <-chan error) {
	for range ch {
	}
}