pulumi/sdk/go/common/channel/channel.go

31 lines
949 B
Go

// Copyright 2016-2023, Pulumi Corporation.
//
// 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 channel
// FilterRead reads every item from the input channel and writes it to the output channel if the given filter function
// returns true for it.
func FilterRead[T any](ch <-chan T, f func(T) bool) <-chan T {
out := make(chan T)
go func() {
for v := range ch {
if f(v) {
out <- v
}
}
close(out)
}()
return out
}