2024-12-17 10:58:01 +00:00
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apiVersion: core.oam.dev/v1beta1
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kind: Application
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metadata:
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name: go-data-stream
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annotations:
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description: 'Data stream processing using NATS topic in Golang (TinyGo), using the WebAssembly Component Model and WebAssembly Interfaces Types (WIT)'
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wasmcloud.dev/authors: Lorenzo Venerandi
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wasmcloud.dev/source-url: https://gitea.rebus.ninja/lore/wasm-nats-stream-client.git/wadm.yaml
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wasmcloud.dev/readme-md-url: https://gitea.rebus.ninja/lore/wasm-nats-stream-client.git/README.md
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wasmcloud.dev/homepage: https://gitea.rebus.ninja/lore/wasm-nats-stream-client.git
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wasmcloud.dev/categories: |
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stream-processing,nats-client,tinygo,golang
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spec:
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components:
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- name: go_stream_processor
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type: component
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properties:
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# To use the locally compiled code in this folder, use the line below instead after running `wash build`:
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# image: file://./build/echo_messaging_s.wasm
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image: gitea.rebus.ninja/lore/wasm-nats-stream-client:1.0.3
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id: stream
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config:
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- name: nats-topic
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properties:
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dest-topic: wasmcloud.echo.reply
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traits:
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# Govern the spread/scheduling of the component
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- type: spreadscaler
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properties:
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instances: 1
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spread:
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- name: cloud
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weight: 100
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requirements:
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host-type: cloud
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- name: edge
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weight: 0
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requirements:
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host-type: edge
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# Establish a unidirectional link to the messaging capability provider (powered by NATS),
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# so the `echo` component can make use of messaging interface functionality
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# (i.e. making interacting with the messaging system, in this case NATS)
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- type: link
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properties:
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target: nats
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namespace: wasmcloud
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package: messaging
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interfaces: [consumer]
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# Add a capability provider that implements `wasmcloud:messaging` using NATS
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- name: nats
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type: capability
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properties:
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image: ghcr.io/wasmcloud/messaging-nats:0.23.1
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## To configure OTEL integration for this provider specifically, uncomment the lines below
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# config:
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# - name: otel
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# properties:
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# otel_exporter_otlp_endpoint: "http://all-in-one:4318"
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# otel_exporter_otlp_traces_endpoint: "http://traces-backend/v1/traces"
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# otel_exporter_otlp_metrics_endpoint: "http://metrics-backend/v1/metrics"
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# otel_exporter_otlp_logs_endpoint: "http://logs-backend/v1/logs"
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traits:
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# Since the `nats` capability provider calls an component to handle messages
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# coming over subscriptions, this provider needs a unidirectional link to the
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# component that wil be called.
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#
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# Here we link the `nats` provider (the "source"), to the `echo` component (the "target"),
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# so that so the provider can deliver messages to the component (by invoking the wasmcloud:messaging/handler interface) .
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- type: link
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properties:
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target: go_stream_processor
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namespace: wasmcloud
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package: messaging
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interfaces: [handler]
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source_config:
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- name: simple-subscription
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properties:
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subscriptions: streaming
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- type: spreadscaler
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properties:
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instances: 1
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spread:
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- name: cloud
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weight: 100
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requirements:
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host-type: cloud
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- name: edge
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weight: 0
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requirements:
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2024-12-14 14:46:21 +00:00
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host-type: edge
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