Add Quiet Flag

CONTRIBUTORS

@@ -33,6 +33,7 @@
 
 # Please keep the list sorted.
 
+Mykola Smith <[email protected]>
 Frank van Rest <[email protected]>
 Kevin Malachowski <[email protected]>
 

cmd/cloud_sql_proxy/cloud_sql_proxy.go

@@ -48,6 +48,7 @@ import (
 
 var (
 	version = flag.Bool("version", false, "Print the version of the proxy and exit")
+	quiet   = flag.Bool("quiet", false, "Disable log messages")
 
 	checkRegion = flag.Bool("check_region", false, `If specified, the 'region' portion of the connection string is required for
 UNIX socket-based connections.`)
@@ -102,6 +103,9 @@ Authorization:
     flag or set the GOOGLE_APPLICATION_CREDENTIALS environment variable. This
     will override gcloud or GCE credentials (if they exist).
 
+General:
+	-quiet
+		Disable log messages (e.g. when new connections are established)
 
 Connection:
   -instances
@@ -333,6 +337,11 @@ func main() {
 		return
 	}
 
+	if *quiet {
+		log.SetFlags(0)
+		log.SetOutput(ioutil.Discard)
+	}
+
 	instList := stringList(*instances)
 	projList := stringList(*projects)
 	// TODO: it'd be really great to consolidate flag verification in one place.