virtcontainers: don't try to talk with the proxy when it's not running

To avoid long timeouts, the runtime shouldn't try to talk with the proxy when it's not running. Signed-off-by: Julio Montes <[email protected]>
kata-containers · Feb 19, 2019 · 58d2785 · 58d2785
1 parent 62c393c
commit 58d2785
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/virtcontainers/kata_agent.go b/virtcontainers/kata_agent.go
@@ -1569,6 +1569,13 @@ func (k *kataAgent) sendReq(request interface{}) (interface{}, error) {
 	span.SetTag("request", request)
 	defer span.Finish()
 
+	if k.state.ProxyPid > 0 {
+		// check that proxy is running before talk with it avoiding long timeouts
+		if err := syscall.Kill(k.state.ProxyPid, syscall.Signal(0)); err != nil {
+			return nil, fmt.Errorf("Proxy is not running: %v", err)
+		}
+	}
+
 	if err := k.connect(); err != nil {
 		return nil, err
 	}