RabbitMQ 绑定规范

Detailed documentation on the RabbitMQ binding component

Component format

To setup RabbitMQ binding create a component of type bindings.rabbitmq. See this guide on how to create and apply a binding configuration.

apiVersion: dapr.io/v1alpha1
kind: Component
metadata:
  name: <NAME>
  namespace: <NAMESPACE>
spec:
  type: bindings.rabbitmq
  version: v1
  metadata:
  - name: queueName
    value: queue1
  - name: host
    value: amqp://[username][:password]@host.domain[:port]
  - name: durable
    value: true
  - name: deleteWhenUnused
    value: false
  - name: ttlInSeconds
    value: 60
  - name: prefetchCount
    value: 0
  - name: exclusive
    value: false
  - name: maxPriority
    value: 5

Warning

以上示例将 Secret 明文存储。更推荐的方式是使用 Secret 组件， here。

Spec metadata fields

字段	Required	Binding support	Details	Example
queueName	Y	Input/Output	The RabbitMQ queue name	`“myqueue”`
host	Y	Input/Output	The RabbitMQ host address	`“amqp://[username][:password]@host.domain[:port]”`
durable	N	Output	Tells RabbitMQ to persist message in storage. Defaults to `“false”`	`“true”`, `“false”`
deleteWhenUnused	N	Input/Output	Enables or disables auto-delete. Defaults to `“false”`	`“true”`, `“false”`
ttlInSeconds	N	Output	Set the default message time to live at RabbitMQ queue level. 如果此参数为空，消息将不会过期，继续在队列上存在，直到处理完毕。 See also	`60`
prefetchCount	N	Input	Set the Channel Prefetch Setting (QoS). 如果此参数为空，QOS 会设置为0为无限制。	`0`
exclusive	N	Input/Output	Determines whether the topic will be an exclusive topic or not. Defaults to `“false”`	`“true”`, `“false”`
maxPriority	N	Input/Output	Parameter to set the priority queue. If this parameter is omitted, queue will be created as a general queue instead of a priority queue. Value between 1 and 255. See also	`“1”`, `“10”`

Output bindings

This component supports both input and output binding interfaces.

字段名为 ttlInSeconds。

create

输出绑定支持的操作

可以在队列级别 ( 如上所述) 或消息级别定义生存时间。在消息级别定义的值会覆盖在队列级别设置的任何值。

若要设置在消息级别生存的时间，请使用 metadata 请求正文中的元数据部分。

字段名为 ttlInSeconds。

示例:

curl -X POST http://localhost:3500/v1.0/bindings/myRabbitMQ \
  -H "Content-Type: application/json" \
  -d "{
        \"data\": {
          \"message\": \"Hi\"
        },
        \"metadata\": {
          \"ttlInSeconds\": "60"
        },
        \"operation\": \"create\"
      }"

curl -X POST http://localhost:3500/v1.0/bindings/myRabbitMQ \
  -H "Content-Type: application/json" \
  -d '{
        "data": {
          "message": "Hi"
        },
        "metadata": {
          "ttlInSeconds": "60"
        },
        "operation": "create"
      }'

相关链接

Priority can be defined at the message level. If maxPriority parameter is set, high priority messages will have priority over other low priority messages.

To set priority at message level use the metadata section in the request body during the binding invocation.

The field name is priority.

示例:

Windows
Linux

curl -X POST http://localhost:3500/v1.0/bindings/myRabbitMQ \
  -H "Content-Type: application/json" \
  -d "{
        \"data\": {
          \"message\": \"Hi\"
        },
        \"metadata\": {
          "priority": \"5\"
        },
        \"operation\": \"create\"
      }"

curl -X POST http://localhost:3500/v1.0/bindings/myRabbitMQ \
  -H "Content-Type: application/json" \
  -d '{
        "data": {
          "message": "Hi"
        },
        "metadata": {
          "priority": "5"
        },
        "operation": "create"
      }'