feat(node): initialize knative and async samples

functions/node/async-bindings.yaml

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+apiVersion: core.openfunction.io/v1beta1
+kind: Function
+metadata:
+  name: sample-node-async-bindings
+spec:
+  version: v2.0.0
+  image: your-docker-registry/image:tag
+  # imageCredentials:
+  #   name: your-docker-registry-secret
+  # build:
+  #   builder: openfunction/builder-node:v2-16.13
+  #   env:
+  #     FUNC_NAME: tryKnative
+  #   srcRepo:
+  #     url: https://github.com/OpenFunction/samples.git
+  #     sourceSubPath: functions/node/src
+  #     revision: main
+  # app port default to "8080"
+  # port: 8080
+  serving:
+    # default to knative
+    runtime: async
+    annotations:
+      # Dapr annotations: https://docs.dapr.io/reference/arguments-annotations-overview/
+      # default to "grpc"
+      dapr.io/app-protocol: http
+      # default to "info"
+      dapr.io/log-level: debug
+      # default to "true"
+      dapr.io/log-as-json: 'false'
+    template:
+      containers:
+        - name: function
+          imagePullPolicy: Always
+    params:
+      # default to FUNC_NAME value
+      FUNCTION_TARGET: tryAsync
+      DEBUG: common:*,ofn:*
+    inputs:
+      - name: mqtt-input
+        component: mqtt-in
+    outputs:
+      - name: mqtt-output
+        component: mqtt-out
+        operation: create
+    bindings:
+      # Dapr MQTT Binding: https://docs.dapr.io/reference/components-reference/supported-bindings/mqtt/
+      mqtt-in:
+        type: bindings.mqtt
+        version: v1
+        metadata:
+          - name: consumerID
+            value: '{uuid}'
+          - name: url
+            value: tcp://admin:public@emqx:1883
+          - name: topic
+            value: in
+      mqtt-out:
+        type: bindings.mqtt
+        version: v1
+        metadata:
+          - name: consumerID
+            value: '{uuid}'
+          - name: url
+            value: tcp://admin:public@emqx:1883
+          - name: topic
+            value: out

functions/node/async-pubsub.yaml

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+apiVersion: core.openfunction.io/v1beta1
+kind: Function
+metadata:
+  name: sample-node-async-pubsub
+spec:
+  version: v2.0.0
+  image: your-docker-registry/image:tag
+  # imageCredentials:
+  #   name: your-docker-registry-secret
+  # build:
+  #   builder: openfunction/builder-node:v2-16.13
+  #   env:
+  #     FUNC_NAME: tryKnative
+  #   srcRepo:
+  #     url: https://github.com/OpenFunction/samples.git
+  #     sourceSubPath: functions/node/src
+  #     revision: main
+  # app port default to "8080"
+  # port: 8080
+  serving:
+    # default to knative
+    runtime: async
+    annotations:
+      # Dapr annotations: https://docs.dapr.io/reference/arguments-annotations-overview/
+      # default to "grpc"
+      dapr.io/app-protocol: http
+      # default to "info"
+      dapr.io/log-level: debug
+      # default to "true"
+      dapr.io/log-as-json: 'false'
+    template:
+      containers:
+        - name: function
+          imagePullPolicy: Always
+    params:
+      # default to FUNC_NAME value
+      FUNCTION_TARGET: tryAsync
+      DEBUG: common:*,ofn:*
+    inputs:
+      - name: mqtt-sub
+        component: mqtt-pubsub
+        topic: sub
+    outputs:
+      - name: mqtt-pub
+        component: mqtt-pubsub
+        topic: pub
+    pubsub:
+      # Dapr MQTT PubSub: https://docs.dapr.io/reference/components-reference/supported-pubsub/setup-mqtt/
+      mqtt-pubsub:
+        type: pubsub.mqtt
+        version: v1
+        metadata:
+          - name: consumerID
+            value: '{uuid}'
+          - name: url
+            value: tcp://admin:public@emqx:1883
+          - name: qos
+            value: 1

functions/node/knative.yaml

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+apiVersion: core.openfunction.io/v1beta1
+kind: Function
+metadata:
+  name: sample-node-knative
+spec:
+  version: v2.0.0
+  image: your-docker-registry/image:tag
+  # imageCredentials:
+  #   name: your-docker-registry-secret
+  # build:
+  #   builder: openfunction/builder-node:v2-16.13
+  #   env:
+  #     FUNC_NAME: tryKnative
+  #   srcRepo:
+  #     url: https://github.com/OpenFunction/samples.git
+  #     sourceSubPath: functions/node/src
+  #     revision: main
+  # app port default to "8080"
+  # port: 8080
+  serving:
+    runtime: knative
+    scaleOptions:
+      minReplicas: 0
+      maxReplicas: 2
+    template:
+      containers:
+        - name: function
+          imagePullPolicy: Always
+    params:
+      # default to "production"
+      NODE_ENV: dev
+      # Node.js debug wildcards
+      DEBUG: common:*,ofn:*

functions/node/src/index.mjs

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+export const tryKnative = (req, res) => {
+  res.send(`Hello, ${req.query.u || 'World'}!`);
+};
+
+export const tryAsync = (ctx, data) => {
+  console.log('Data received: %o', data);
+  ctx.send(data);
+};

functions/node/src/package.json

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+{
+  "main": "index.mjs",
+  "scripts": {
+    "start": "functions-framework --target=tryKnative"
+  },
+  "dependencies": {
+    "@openfunction/functions-framework": "^0.4.1"
+  }
+}