Fission MQT integration with keda (#1657)

Fission MQT integration based on Keda with Kafka connector

charts/fission-all/templates/deployment.yaml

@@ -839,3 +839,46 @@ spec:
 {{- if .Values.extraCoreComponentPodConfig }}
 {{ toYaml .Values.extraCoreComponentPodConfig | indent 6 -}}
 {{- end }}
+
+{{- if .Values.mqt_keda.enabled }}
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: mqtrigger-keda
+  labels:
+    chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
+    svc: mqtrigger-keda
+    messagequeue: keda
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      svc: mqtrigger-keda
+      messagequeue: keda
+  template:
+    metadata:
+      labels:
+        svc: mqtrigger-keda
+        messagequeue: keda
+    spec:
+      containers:
+      - name:  mqtrigger-keda
+        image: {{ include "fission-bundleImage" . | quote }}
+        imagePullPolicy: {{ .Values.pullPolicy }}
+        command: ["/fission-bundle"]
+        args: ["--mqt_keda", "--routerUrl", "http://router.{{ .Release.Namespace }}"]
+        env:
+        - name: TRACE_JAEGER_COLLECTOR_ENDPOINT
+          value: "{{ .Values.traceCollectorEndpoint }}"
+        - name: TRACING_SAMPLING_RATE
+          value: {{ .Values.traceSamplingRate | default "0.5" | quote }}
+        - name: DEBUG_ENV
+          value: {{ .Values.debugEnv | quote }}
+        - name: KAFKA_IMAGE
+          value: {{ .Values.mqt_keda.connector_images.kafka }}
+      serviceAccountName: fission-svc
+{{- if .Values.extraCoreComponentPodConfig }}
+{{ toYaml .Values.extraCoreComponentPodConfig | indent 6 -}}
+{{- end }}
+{{- end }}

charts/fission-all/values.yaml

@@ -300,3 +300,9 @@ canaryDeployment:
 # Use these flags to enable opentracing, the variable is endpoint of Jaeger collector in the format shown below
 #traceCollectorEndpoint: "http://jaeger-collector.jaeger.svc:14268/api/traces?format=jaeger.thrift"
 #traceSamplingRate: 0.75
+
+## Message Queue Trigger Kind, KEDA: enable and configuration
+mqt_keda:
+  enabled: true
+  connector_images:
+    kafka: fission/keda-kafka