kafka provider template

wasm-component-template/kafka-component-stream/messaging-kafka.wadm.yaml

@@ -0,0 +1,47 @@
+---
+apiVersion: core.oam.dev/v1beta1
+kind: Application
+metadata:
+  name: messaging-kafka-demo
+  annotations:
+    version: v0.0.1
+    description: |
+      Echo demo in Rust, using the WebAssembly Component Model and WebAssembly Interfaces Types (WIT), along with
+      the Kafka messaging provider.
+spec:
+  components:
+    - name: echo
+      type: component
+      properties:
+        image: file://./build/echo_messaging_s.wasm
+      traits:
+        # Govern the spread/scheduling of the component
+        - type: spreadscaler
+          properties:
+            instances: 1
+        - type: link
+          properties:
+            target: kafka
+            namespace: wasmcloud
+            package: messaging
+            interfaces: [consumer]
+            target_config:
+              - name: simple-subscription
+                properties:
+                  topic: wasmcloud.echo
+                  # consumer_group: "your-group-name-here"
+                  # consumer_partitions: "0,1,2,3"
+                  # producer_partitions: "0,1,2,3"
+
+    # Add a capability provider that implements `wasmcloud:messaging` using KAFKA
+    - name: kafka
+      type: capability
+      properties:
+        # To use the locally built version of this provider,
+        #
+        # - build it with (`cargo build`)
+        # - create a provider archive (`wash par create`)
+        # - uncomment the line below
+        #
+        # image: file://../../messaging-kafka-provider.par.gz
+        image: ghcr.io/wasmcloud/messaging-kafka:0.5.1