Run the metrics uploader in the background.
The metrics uploader was currently running on foreground where it
would copy the metrics files in a separate directory and then forked
into the background for the upload process. As a result, running the
lunch command would take a second longer to run since each metrics
uploader run had an average of half a second.
Bug: 140638454
Test: * Wrote and updated unit test cases.
* Set ANDROID_ENABLE_METRICS_UPLOAD to point to the latest
metrics_uploader bash script. Executed the "lunch 1" command
and measured the running time. Executed "m nothing" command
and checked that the metrics were uploaded.
* Ran "lunch 1" and "m nothing" with
ANDROID_ENABLE_METRICS_UPLOAD=""
* Removed oauth from metrics_uploader and ran "m nothing" and
"lunch 1". The oauth Message appeared only to "m nothing"
Change-Id: I13c61e666c8f44613dee291a704cef6a27335188
diff --git a/ui/build/util.go b/ui/build/util.go
index 75e6753..d44cd6d 100644
--- a/ui/build/util.go
+++ b/ui/build/util.go
@@ -15,6 +15,7 @@
package build
import (
+ "io"
"os"
"path/filepath"
"strings"
@@ -124,3 +125,20 @@
}
return str[:idx], str[idx+1:], true
}
+
+// copyFile copies a file from src to dst. filepath.Dir(dst) must exist.
+func copyFile(src, dst string) (int64, error) {
+ source, err := os.Open(src)
+ if err != nil {
+ return 0, err
+ }
+ defer source.Close()
+
+ destination, err := os.Create(dst)
+ if err != nil {
+ return 0, err
+ }
+ defer destination.Close()
+
+ return io.Copy(destination, source)
+}