tests: upload & test in vCenter. Closes #338

vendor/github.com/vmware/govmomi/vim25/progress/tee.go

@@ -0,0 +1,41 @@
+/*
+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
+	}
+}