Refactoring of the default values

pkg/obiutils/pipe.go

@@ -0,0 +1,40 @@
+package obiutils
+
+import (
+	"sync"
+
+	log "github.com/sirupsen/logrus"
+)
+
+var globalLocker sync.WaitGroup
+var globalLockerCounter = 0
+
+// RegisterAPipe increments the global lock counter and adds a new pipe to the global wait group.
+//
+// No parameters.
+// No return values.
+func RegisterAPipe() {
+	globalLocker.Add(1)
+	globalLockerCounter++
+	log.Debugln(globalLockerCounter, " Pipes are registered now")
+}
+
+// UnregisterPipe decrements the global lock counter and signals that a pipe has finished.
+//
+// No parameters.
+// No return values.
+func UnregisterPipe() {
+	globalLocker.Done()
+	globalLockerCounter--
+	log.Debugln(globalLockerCounter, "are still registered")
+}
+
+// WaitForLastPipe waits until all registered pipes have finished.
+//
+// THe function have to be called at the end of every main function.
+//
+// No parameters.
+// No return values.
+func WaitForLastPipe() {
+	globalLocker.Wait()
+}