42 lines
1015 B
Go
42 lines
1015 B
Go
|
/*
|
||
|
|
Copyright (c) 2014 VMware, Inc. All Rights Reserved.
|
||
|
|
|
||
|
|
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 progress
|
||
|
|
|
||
|
|
// Tee works like Unix tee; it forwards all progress reports it receives to the
|
||
|
|
// specified sinks
|
||
|
|
func Tee(s1, s2 Sinker) Sinker {
|
||
|
|
fn := func() chan<- Report {
|
||
|
|
d1 := s1.Sink()
|
||
|
|
d2 := s2.Sink()
|
||
|
|
u := make(chan Report)
|
||
|
|
go tee(u, d1, d2)
|
||
|
|
return u
|
||
|
|
}
|
||
|
|
|
||
|
|
return SinkFunc(fn)
|
||
|
|
}
|
||
|
|
|
||
|
|
func tee(u <-chan Report, d1, d2 chan<- Report) {
|
||
|
|
defer close(d1)
|
||
|
|
defer close(d2)
|
||
|
|
|
||
|
|
for r := range u {
|
||
|
|
d1 <- r
|
||
|
|
d2 <- r
|
||
|
|
}
|
||
|
|
}
|