Apache artemis origin header needed

CHANGELOG.md

@@ -23,6 +23,7 @@
 - Add Azure Pipelines Scaler ([#1706](https://github.com/kedacore/keda/pull/1706))
 - Add OpenStack Metrics Scaler ([#1382](https://github.com/kedacore/keda/issues/1382))
 - Added basic, tls and bearer authentication support to the Prometheus scaler [#1559](https://github.com/kedacore/keda/issues/1559)
+- Add header Origin to Apache Artemis scaler [#1796](https://github.com/kedacore/keda/pull/1796)
 
 ### Improvements
 

pkg/scalers/artemis_scaler.go

@@ -34,6 +34,7 @@ type artemisMetadata struct {
 	password           string
 	restAPITemplate    string
 	queueLength        int
+	corsHeader         string
 }
 
 //revive:enable:var-naming
@@ -48,6 +49,7 @@ const (
 	artemisMetricType         = "External"
 	defaultArtemisQueueLength = 10
 	defaultRestAPITemplate    = "http://<<managementEndpoint>>/console/jolokia/read/org.apache.activemq.artemis:broker=\"<<brokerName>>\",component=addresses,address=\"<<brokerAddress>>\",subcomponent=queues,routing-type=\"anycast\",queue=\"<<queueName>>\"/MessageCount"
+	defaultCorsHeader         = "http://%s"
 )
 
 var artemisLog = logf.Log.WithName("artemis_queue_scaler")
@@ -86,6 +88,12 @@ func parseArtemisMetadata(config *ScalerConfig) (*artemisMetadata, error) {
 	}
 	meta.managementEndpoint = config.TriggerMetadata["managementEndpoint"]
 
+	if val, ok := config.TriggerMetadata["corsHeader"]; ok && val != "" {
+		meta.corsHeader = config.TriggerMetadata["corsHeader"]
+	} else {
+		meta.corsHeader = fmt.Sprintf(defaultCorsHeader, meta.managementEndpoint)
+	}
+
 	if config.TriggerMetadata["queueName"] == "" {
 		return nil, errors.New("no queue name given")
 	}
@@ -176,6 +184,7 @@ func (s *artemisScaler) getQueueMessageCount() (int, error) {
 	req, err := http.NewRequest("GET", url, nil)
 
 	req.SetBasicAuth(s.metadata.username, s.metadata.password)
+	req.Header.Set("Origin", s.metadata.corsHeader)
 
 	if err != nil {
 		return -1, err
@@ -193,7 +202,7 @@ func (s *artemisScaler) getQueueMessageCount() (int, error) {
 	if resp.StatusCode == 200 && monitoringInfo.Status == 200 {
 		messageCount = monitoringInfo.MsgCount
 	} else {
-		return -1, fmt.Errorf("artemis management endpoint response error code : %d", resp.StatusCode)
+		return -1, fmt.Errorf("artemis management endpoint response error code : %d %d", resp.StatusCode, monitoringInfo.Status)
 	}
 
 	artemisLog.V(1).Info(fmt.Sprintf("Artemis scaler: Providing metrics based on current queue length %d queue length limit %d", messageCount, s.metadata.queueLength))

pkg/scalers/artemis_scaler_test.go

@@ -78,6 +78,30 @@ var testArtemisMetadataWithAuthParams = []parseArtemisMetadataTestData{
 	{map[string]string{"managementEndpoint": "localhost:8161", "queueName": "queue1", "brokerName": "broker-activemq", "brokerAddress": "test"}, false},
 }
 
+func TestArtemisDefaultCorsHeader(t *testing.T) {
+	metadata := map[string]string{"managementEndpoint": "localhost:8161", "queueName": "queue1", "brokerName": "broker-activemq", "brokerAddress": "test", "username": "myUserName", "password": "myPassword"}
+	meta, err := parseArtemisMetadata(&ScalerConfig{ResolvedEnv: sampleArtemisResolvedEnv, TriggerMetadata: metadata, AuthParams: nil})
+
+	if err != nil {
+		t.Error("Expected success but got error", err)
+	}
+	if !(meta.corsHeader == "http://localhost:8161") {
+		t.Errorf("Expected http://localhost:8161 but got %s", meta.corsHeader)
+	}
+}
+
+func TestArtemisCorsHeader(t *testing.T) {
+	metadata := map[string]string{"managementEndpoint": "localhost:8161", "queueName": "queue1", "brokerName": "broker-activemq", "brokerAddress": "test", "username": "myUserName", "password": "myPassword", "corsHeader": "test"}
+	meta, err := parseArtemisMetadata(&ScalerConfig{ResolvedEnv: sampleArtemisResolvedEnv, TriggerMetadata: metadata, AuthParams: nil})
+
+	if err != nil {
+		t.Error("Expected success but got error", err)
+	}
+	if !(meta.corsHeader == "test") {
+		t.Errorf("Expected test but got %s", meta.corsHeader)
+	}
+}
+
 func TestArtemisParseMetadata(t *testing.T) {
 	for _, testData := range testArtemisMetadata {
 		_, err := parseArtemisMetadata(&ScalerConfig{ResolvedEnv: sampleArtemisResolvedEnv, TriggerMetadata: testData.metadata, AuthParams: nil})