ExchangeProps

Properties for defining a Exchange.

See https://www.alibabacloud.com/help/ros/developer-reference/aliyun-amqp-exchange

Initializer

import ros_cdk_amqp
ros_cdk_amqp.ExchangeProps(
  auto_delete_state: typing.Union[bool, IResolvable],
  exchange_name: typing.Union[str, IResolvable],
  exchange_type: typing.Union[str, IResolvable],
  instance_id: typing.Union[str, IResolvable],
  internal: typing.Union[bool, IResolvable],
  virtual_host: typing.Union[str, IResolvable],
  alternate_exchange: typing.Union[str, IResolvable] = None,
  x_delayed_type: typing.Union[str, IResolvable] = None
)

Properties

auto_delete_state^Required

auto_delete_state: typing.Union[bool, IResolvable]

• Type: typing.Union[bool, ros_cdk_core.IResolvable]

Property autoDeleteState: Specifies whether the Auto Delete attribute is configured.

Valid values: true: The Auto Delete attribute is configured. If the last queue that is bound to an exchange is unbound, the exchange is automatically deleted. false: The Auto Delete attribute is not configured. If the last queue that is bound to an exchange is unbound, the exchange is not automatically deleted.

exchange_name^Required

exchange_name: typing.Union[str, IResolvable]

• Type: typing.Union[str, ros_cdk_core.IResolvable]

Property exchangeName: The name of the exchange.

Note:

• The name can contain only letters, digits, hyphens (-), underscores (_), periods (.), number signs (#), forward slashes (/), and at signs (@). The name must be 1 to 255 characters in length.
• The name of an exchange cannot be changed after the exchange is created. To change the name, delete the exchange and create a new one.

exchange_type^Required

exchange_type: typing.Union[str, IResolvable]

• Type: typing.Union[str, ros_cdk_core.IResolvable]

Property exchangeType: The type of the exchange.

Valid values:

• DIRECT: This routing rule type routes messages to a queue whose binding key exactly matches the routing key of the message.
• TOPIC: This type is similar to the DIRECT type. It routes messages to bound queues using routing key pattern matching and string comparison.
• FANOUT: This routing rule type is simple. It routes all messages sent to the exchange to all queues that are bound to the exchange. This works like a broadcast feature.
• HEADERS: This type is similar to the DIRECT type. It uses header properties instead of a routing key for routing. When a queue is bound to a headers exchange, key-value pairs are defined for the binding. When a message is sent to the exchange, key-value pairs are defined in the message header. The exchange routes the message by comparing the key-value pairs in the header with the key-value pairs of the binding.

instance_id^Required

instance_id: typing.Union[str, IResolvable]

• Type: typing.Union[str, ros_cdk_core.IResolvable]

Property instanceId: InstanceId.

internal^Required

internal: typing.Union[bool, IResolvable]

• Type: typing.Union[bool, ros_cdk_core.IResolvable]

Property internal: Specifies whether an exchange is an internal exchange.

Valid values: false: The exchange is not an internal exchange. true: The exchange is an internal exchange.

virtual_host^Required

virtual_host: typing.Union[str, IResolvable]

• Type: typing.Union[str, ros_cdk_core.IResolvable]

Property virtualHost: The name of the virtual host.

alternate_exchange^Optional

alternate_exchange: typing.Union[str, IResolvable]

• Type: typing.Union[str, ros_cdk_core.IResolvable]

Property alternateExchange: The alternate exchange.

An alternate exchange is configured for an existing exchange. It is used to receive messages that fail to be routed to queues from the existing exchange.

x_delayed_type^Optional

x_delayed_type: typing.Union[str, IResolvable]

• Type: typing.Union[str, ros_cdk_core.IResolvable]

Property xDelayedType: Exchanges of the x-delay-Message type allow you to customize the Header property of the message, and the x-delay specifies the amount of time in milliseconds for the message to be delivered.

The routing rules for this class of exchanges depend on the Exchange type specified in the x-delay-type parameter, which specifies the actual Exchange type to which the delayed message will eventually be delivered. Valid values:

• DIRECT: Delivers deferred messages to a specified queue bound to an Exchange of type DIRECT.

• TOPIC: Delivers deferred messages to the queue bound to the Exchange type TOPIC.

• FANOUT: Delivers deferred messages to a queue bound to an Exchange of type FANOUT.

• HEADERS: Deferred messages are delivered to the queue bound to the Exchange HEADERS type.

• X-JMS-TOPIC: Delivers deferred messages to the queue bound to X-JMS-TOPIC.