Merge pull request #305 from linkernetworks/phstsai/fixTravisBug

[Bug] For travis debug

.travis.yml

@@ -59,7 +59,11 @@ jobs:
   include:
     - stage: "Tests"
       name: "Unit Test"
-      script: make pre-build && sudo -E PATH=$PATH TEST_GRPC=1 TEST_PROMETHEUS=1 make src.test-coverage-minikube
+      script: 
+        # DEBUG: first two lines is for debug
+        - kubectl get pods --all-namespaces
+        - kubectl get service --all-namespaces
+        - make pre-build && sudo -E PATH=$PATH TEST_GRPC=1 TEST_PROMETHEUS=1 make src.test-coverage-minikube
       after_success:
         - cp build/src/coverage.txt coverage.txt
         - bash <(curl -s https://codecov.io/bash)

src/prometheuscontroller/controller.go

@@ -1,6 +1,7 @@
 package prometheuscontroller
 
 import (
+	"fmt"
 	"strconv"
 	"strings"
 
@@ -537,7 +538,7 @@ func GetService(sp *serviceprovider.Container, id string) (entity.ServiceMetrics
 	kc := sp.KubeCtl
 	object, err := kc.GetService(service.ServiceName, service.Namespace)
 	if err != nil {
-		return entity.ServiceMetrics{}, err
+		return entity.ServiceMetrics{}, fmt.Errorf("fail to get the ports setting of service %v in namespace %v: %v", service.ServiceName, service.Namespace, err)
 	}
 	service.Ports = object.Spec.Ports