(#25) Optimise reading for docker-compose output

Read from: https://blog.kowalczyk.info/article/wOYk/advanced-command-execution-in-go-with-osexec.html
mdelapenya · Apr 16, 2020 · 88efbd0 · 88efbd0
1 parent 661033b
commit 88efbd0
Showing 1 changed file with 7 additions and 3 deletions.
diff --git a/compose.go b/compose.go
@@ -9,6 +9,7 @@ import (
 	"path/filepath"
 	"runtime"
 	"strings"
+	"sync"
 
 	"gopkg.in/yaml.v2"
 )
@@ -172,13 +173,16 @@ func execute(
 		}
 	}
 
+	var wg sync.WaitGroup
+	wg.Add(1)
+
 	go func() {
 		_, errStdout = io.Copy(stdout, stdoutIn)
+		wg.Done()
 	}()
 
-	go func() {
-		_, errStderr = io.Copy(stderr, stderrIn)
-	}()
+	_, errStderr = io.Copy(stderr, stderrIn)
+	wg.Wait()
 
 	err = cmd.Wait()