mirror of https://github.com/dapr/docs.git
remove consumerid and add example
Signed-off-by: Hannah Hunter <hannahhunter@microsoft.com>
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@ -31,8 +31,6 @@ spec:
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value: "/path/to/tls.key"
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- name: token # Optional. Used for token based authentication.
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value: "my-token"
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- name: consumerID
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value: "channel1"
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- name: name
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value: "my-conn-name"
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- name: streamName
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@ -83,7 +81,6 @@ spec:
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| tls_client_cert | N | NATS TLS Client Authentication Certificate | `"/path/to/tls.crt"` |
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| tls_client_key | N | NATS TLS Client Authentication Key | `"/path/to/tls.key"` |
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| token | N | [NATS token based authentication] | `"my-token"` |
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| consumerID | N | Consumer ID (consumer tag) organizes one or more consumers into a group. Consumers with the same consumer ID work as one virtual consumer; for example, a message is processed only once by one of the consumers in the group. If the `consumerID` is not provided, the Dapr runtime set it to the Dapr application ID (`appID`) value. | `"channel1"`
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| name | N | NATS connection name | `"my-conn-name"` |
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| streamName | N | Name of the JetStream Stream to bind to | `"my-stream"` |
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| durableName | N | [Durable name] | `"my-durable"` |
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@ -146,6 +143,31 @@ It is essential to create a NATS JetStream for a specific subject. For example,
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nats -s localhost:4222 stream add myStream --subjects mySubject
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```
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## Example: Competing consumers pattern
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Let's say you'd like each message to be processed by only one application or pod with the same app-id. Typically, the `consumerID` metadata spec helps you define competing consumers. However, `consumerID` is not supported in NATS JetStream.
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The following example demonstrates using a competing consumer pattern with dynamic values.
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```yml
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apiVersion: dapr.io/v1alpha1
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kind: Component
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metadata:
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name: pubsub
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spec:
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type: pubsub.jetstream
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version: v1
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metadata:
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- name: name
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value: "my-conn-name"
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- name: streamName
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value: "my-stream"
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- name: durableName
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value: "my-durable"
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- name: queueGroupName
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value: "my-queue"
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```
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## Related links
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- [Basic schema for a Dapr component]({{< ref component-schema >}})
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- Read [this guide]({{< ref "howto-publish-subscribe.md#step-2-publish-a-topic" >}}) for instructions on configuring pub/sub components
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