go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/common/sync/parallel/consumers.go (about)

     1  // Copyright 2016 The LUCI Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package parallel
    16  
    17  // Must can be used to consume the channel from Run. It asserts that none of
    18  // the functions run return an error. If one returns non-nil, this will panic
    19  // with the first error encountered (which may cause the channel to remain open
    20  // and unprocessed, blocking other tasks).
    21  func Must(ch <-chan error) {
    22  	for err := range ch {
    23  		if err != nil {
    24  			panic(err)
    25  		}
    26  	}
    27  }
    28  
    29  // Ignore can be used to consume the channel from Run. It blocks on all errors
    30  // in the channel and discards them.
    31  func Ignore(ch <-chan error) {
    32  	for range ch {
    33  	}
    34  }