Class Channel

See

A raw Channel can be acquired from your Connection, but please consider using a higher level abstraction like a Consumer or Publisher for most cases.

AMQP is a multi-channelled protocol. Channels provide a way to multiplex a heavyweight TCP/IP connection into several light weight connections. This makes the protocol more “firewall friendly” since port usage is predictable. It also means that traffic shaping and other network QoS features can be easily employed. Channels are independent of each other and can perform different functions simultaneously with other channels, the available bandwidth being shared between the concurrent activities.

Example

const rabbit = new Connection()

// Will wait for the connection to establish and then create a Channel
const ch = await rabbit.acquire()

// Channels can emit some events too (see documentation)
ch.on('close', () => {
  console.log('channel was closed')
})

// Create a queue for the duration of this connection
await ch.queueDeclare({queue: 'my-queue'})

// Enable publisher acknowledgements
await ch.confirmSelect()

const data = {title: 'just some object'}

// Resolves when the data has been flushed through the socket or if
// ch.confirmSelect() was called: will wait for an acknowledgement
await ch.basicPublish({routingKey: 'my-queue'}, data)

const msg = ch.basicGet('my-queue')
console.log(msg)

await ch.queueDelete('my-queue')

// It's your responsibility to close any acquired channels
await ch.close()

Hierarchy

EventEmitter
- Channel

Properties

active

active: boolean

False if the channel is closed

`Readonly` id

id: number

Methods

basicAck

basicAck(params): void
Acknowledge one or more messages.
Parameters
- params: {
  deliveryTag?: number;
  multiple?: boolean;
  }
  - Optional deliveryTag?: number
    
    The server-assigned and channel-specific delivery tag
  - Optional multiple?: boolean
    
    If set to 1, the delivery tag is treated as "up to and including", so that multiple messages can be acknowledged with a single method. If set to zero, the delivery tag refers to a single message. If the multiple field is 1, and the delivery tag is zero, this indicates acknowledgement of all outstanding messages.
Returns void
- Defined in Channel.ts:572

basicCancel

basicCancel(consumerTag): Promise<{
consumerTag: string;
}>
Stop a consumer.
Parameters
- consumerTag: string
Returns Promise<{
consumerTag: string;
}>
- Defined in Channel.ts:521
basicCancel(params): Promise<{
consumerTag: string;
}>
Parameters
- params: {
  consumerTag: string;
  }
  - consumerTag: string
Returns Promise<{
consumerTag: string;
}>
- Defined in Channel.ts:522

basicConsume

basicConsume(params, cb): Promise<{
consumerTag: string;
}>
This is a low-level method; consider using Connection#createConsumer() instead.

Begin consuming messages from a queue. Consumers last as long as the channel they were declared on, or until the client cancels them. The callback cb(msg) is called for each incoming message. You must call basicAck to complete the delivery, usually after you've finished some task.
Parameters
- params: {
      arguments?: {
          x-cancel-on-ha-failover?: boolean;
          x-priority?: number;
          [k: string]: any;
      };
      consumerTag?: string;
      exclusive?: boolean;
      noAck?: boolean;
      noLocal?: boolean;
      queue?: string;
  }
  - Optional arguments?: {
        x-cancel-on-ha-failover?: boolean;
        x-priority?: number;
        [k: string]: any;
    }
    - [k: string]: any
    - Optional x-cancel-on-ha-failover?: boolean
      
      https://www.rabbitmq.com/ha.html#cancellation
    - Optional x-priority?: number
      
      https://www.rabbitmq.com/consumer-priority.html
  - Optional consumerTag?: string
    
    Specifies the identifier for the consumer. The consumer tag is local to a channel, so two clients can use the same consumer tags. If this field is empty the server will generate a unique tag.
  - Optional exclusive?: boolean
    
    Request exclusive consumer access, meaning only this consumer can access the queue.
  - Optional noAck?: boolean
    
    If this field is set the server does not expect acknowledgements for messages. That is, when a message is delivered to the client the server assumes the delivery will succeed and immediately dequeues it. This functionality may increase performance but at the cost of reliability. Messages can get lost if a client dies before they are delivered to the application.
  - Optional noLocal?: boolean
    
    If the no-local field is set the server will not send messages to the connection that published them.
  - Optional queue?: string
    
    Specifies the name of the queue to consume from. If blank then the last declared queue (on the channel) will be used.
- cb: ((msg) => void)
  - - (msg): void
    - Parameters
      
      msg: AsyncMessage
      
      Returns void
Returns Promise<{
consumerTag: string;
}>
- Defined in Channel.ts:513

basicGet

basicGet(params): Promise<undefined | SyncMessage>
Request a single message from a queue
Parameters
- params: {
  noAck?: boolean;
  queue?: string;
  }
  - Optional noAck?: boolean
    
    If this field is set the server does not expect acknowledgements for messages. That is, when a message is delivered to the client the server assumes the delivery will succeed and immediately dequeues it. This functionality may increase performance but at the cost of reliability. Messages can get lost if a client dies before they are delivered to the application.
  - Optional queue?: string
    
    Specifies the name of the queue to consume from.
Returns Promise<undefined | SyncMessage>
- Defined in Channel.ts:576

basicNack

basicNack(params): void
Reject one or more incoming messages.
Parameters
- params: {
      deliveryTag?: number;
      multiple?: boolean;
      requeue?: boolean;
  }
  - Optional deliveryTag?: number
  - Optional multiple?: boolean
    
    If set to 1, the delivery tag is treated as "up to and including", so that multiple messages can be rejected with a single method. If set to zero, the delivery tag refers to a single message. If the multiple field is 1, and the delivery tag is zero, this indicates rejection of all outstanding messages.
  - Optional requeue?: boolean
    If requeue is true, the server will attempt to requeue the message. If requeue is false or the requeue attempt fails the messages are discarded or dead-lettered. The default should be TRUE, according to the AMQP specification, however this can lead to an endless retry-loop if you're not careful. Messages consumed from a quorum queue will have the "x-delivery-count" header, allowing you to discard a message after too many attempted deliveries. For classic mirrored queues, or non-mirrored queues, you will need to construct your own mechanism for discarding poison messages.
    
    Default
    true
Returns void
- Defined in Channel.ts:580

basicPublish

basicPublish(envelope, body): Promise<void>
This method publishes a message to a specific exchange. The message will be routed to queues as defined by the exchange configuration.

If the body is a string then it will be serialized with contentType='text/plain'. If body is an object then it will be serialized with contentType='application/json'. Buffer objects are unchanged.

If publisher-confirms are enabled, then this will resolve when the acknowledgement is received. Otherwise this will resolve after writing to the TCP socket, which is usually immediate. Note that if you keep publishing while the connection is blocked (see Connection#on('connection.blocked')) then the TCP socket buffer will eventually fill and this method will no longer resolve immediately.
Parameters
- envelope: Envelope
- body: any
Returns Promise<void>
- Defined in Channel.ts:472
basicPublish(queue, body): Promise<void>
Send directly to a queue. Same as basicPublish({routingKey: queue}, body)
Parameters
- queue: string
- body: any
Returns Promise<void>
- Defined in Channel.ts:474

basicQos

basicQos(params): Promise<void>
Specify quality of service.
Parameters
- params: {
      global?: boolean;
      prefetchCount?: number;
      prefetchSize?: number;
  }
  - Optional global?: boolean
    
    RabbitMQ has reinterpreted this field. The original specification said: "By default the QoS settings apply to the current channel only. If this field is set, they are applied to the entire connection." Instead, RabbitMQ takes global=false to mean that the QoS settings should apply per-consumer (for new consumers on the channel; existing ones being unaffected) and global=true to mean that the QoS settings should apply per-channel.
  - Optional prefetchCount?: number
    
    Specifies a prefetch window in terms of whole messages. This field may be used in combination with the prefetch-size field; a message will only be sent in advance if both prefetch windows (and those at the channel and connection level) allow it. The prefetch-count is ignored if the no-ack option is set.
  - Optional prefetchSize?: number
    
    The client can request that messages be sent in advance so that when the client finishes processing a message, the following message is already held locally, rather than needing to be sent down the channel. Prefetching gives a performance improvement. This field specifies the prefetch window size in octets. The server will send a message in advance if it is equal to or smaller in size than the available prefetch size (and also falls into other prefetch limits). May be set to zero, meaning "no specific limit", although other prefetch limits may still apply. The prefetch-size is ignored if the no-ack option is set.
Returns Promise<void>
- Defined in Channel.ts:584

basicRecover

basicRecover(params): Promise<void>
This method asks the server to redeliver all unacknowledged messages on a specified channel. Zero or more messages may be redelivered.
Parameters
- params: {
  requeue?: boolean;
  }
  - Optional requeue?: boolean
    
    If this field is zero, the message will be redelivered to the original recipient. If this bit is 1, the server will attempt to requeue the message, potentially then delivering it to an alternative subscriber.
Returns Promise<void>
- Defined in Channel.ts:591

close

close(): Promise<void>
Close the channel

Returns Promise<void>
- Defined in Channel.ts:155

confirmSelect

confirmSelect(): Promise<void>
This method sets the channel to use publisher acknowledgements. https://www.rabbitmq.com/confirms.html#publisher-confirms

Returns Promise<void>
- Defined in Channel.ts:541

exchangeBind

exchangeBind(params): Promise<void>
Bind exchange to an exchange.
Parameters
- params: {
      arguments?: Record<string, any>;
      destination: string;
      routingKey?: string;
      source: string;
  }
  - Optional arguments?: Record<string, any>
    
    A set of arguments for the binding. The syntax and semantics of these arguments depends on the exchange class.
  - destination: string
    
    Specifies the name of the destination exchange to bind.
  - Optional routingKey?: string
    
    Specifies the routing key for the binding. The routing key is used for routing messages depending on the exchange configuration. Not all exchanges use a routing key - refer to the specific exchange documentation.
  - source: string
    
    Specifies the name of the source exchange to bind.
Returns Promise<void>
- Defined in Channel.ts:595

exchangeDeclare

exchangeDeclare(params): Promise<void>
Verify exchange exists, create if needed.
Parameters
- params: {
      arguments?: {
          alternate-exchange?: string;
          [k: string]: any;
      };
      autoDelete?: boolean;
      durable?: boolean;
      exchange: string;
      internal?: boolean;
      passive?: boolean;
      type?: string;
  }
  - Optional arguments?: {
    alternate-exchange?: string;
    [k: string]: any;
    }
    - [k: string]: any
    - Optional alternate-exchange?: string
      
      https://www.rabbitmq.com/ae.html
  - Optional autoDelete?: boolean
    
    If set, the exchange is deleted when all queues have finished using it.
  - Optional durable?: boolean
    
    If set when creating a new exchange, the exchange will be marked as durable. Durable exchanges remain active when a server restarts. Non-durable exchanges (transient exchanges) are purged if/when a server restarts.
  - exchange: string
    
    Exchange names starting with "amq." are reserved for pre-declared and standardised exchanges. The exchange name consists of a non-empty sequence of these characters: letters, digits, hyphen, underscore, period, or colon.
  - Optional internal?: boolean
    
    If set, the exchange may not be used directly by publishers, but only when bound to other exchanges. Internal exchanges are used to construct wiring that is not visible to applications.
  - Optional passive?: boolean
    
    If set, the server will reply with Declare-Ok if the exchange already exists with the same name, and raise an error if not. The client can use this to check whether an exchange exists without modifying the server state. When set, all other method fields except name and no-wait are ignored. A declare with both passive and no-wait has no effect. Arguments are compared for semantic equivalence.
  - Optional type?: string
    direct, topic, fanout, or headers: Each exchange belongs to one of a set of exchange types implemented by the server. The exchange types define the functionality of the exchange - i.e. how messages are routed through it.
    
    Default
    "direct"
Returns Promise<void>
- Defined in Channel.ts:603

exchangeDelete

exchangeDelete(params): Promise<void>
Delete an exchange.
Parameters
- params: {
  exchange: string;
  ifUnused?: boolean;
  }
  - exchange: string
    
    Name of the exchange
  - Optional ifUnused?: boolean
    
    If set, the server will only delete the exchange if it has no queue bindings. If the exchange has queue bindings the server does not delete it but raises a channel exception instead.
Returns Promise<void>
- Defined in Channel.ts:609

exchangeUnbind

exchangeUnbind(params): Promise<void>
Unbind an exchange from an exchange.
Parameters
- params: {
      arguments?: Record<string, any>;
      destination: string;
      routingKey?: string;
      source: string;
  }
  - Optional arguments?: Record<string, any>
  - destination: string
    
    Specifies the name of the destination exchange to unbind.
  - Optional routingKey?: string
    
    Specifies the routing key of the binding to unbind.
  - source: string
    
    Specifies the name of the source exchange to unbind.
Returns Promise<void>
- Defined in Channel.ts:615

on

on(name, cb): Channel
The specified consumer was stopped by the server. The error param describes the reason for the cancellation.
Parameters
- name: "basic.cancel"
- cb: ((consumerTag, err) => void)
  - - (consumerTag, err): void
    - Parameters
      
      consumerTag: string
      
      err: any
      
      Returns void
Returns Channel
- Defined in Channel.ts:40
on(name, cb): Channel
An undeliverable message was published with the "immediate" flag set, or an unroutable message published with the "mandatory" flag set. The reply code and text provide information about the reason that the message was undeliverable.
Parameters
- name: "basic.return"
- cb: ((msg) => void)
  - - (msg): void
    - Parameters
      
      msg: ReturnedMessage
      
      Returns void
Returns Channel
- Defined in Channel.ts:46
on(name, cb): Channel
The channel was closed, because you closed it, or due to some error
Parameters
- name: "close"
- cb: (() => void)
  - - (): void
    - Returns void
Returns Channel
- Defined in Channel.ts:48

queueBind

queueBind(params): Promise<void>
This method binds a queue to an exchange. Until a queue is bound it will not receive any messages. In a classic messaging model, store-and-forward queues are bound to a direct exchange and subscription queues are bound to a topic exchange.
Parameters
- params: {
      arguments?: Record<string, any>;
      exchange: string;
      queue?: string;
      routingKey?: string;
  }
  - Optional arguments?: Record<string, any>
  - exchange: string
    
    Name of the exchange to bind to.
  - Optional queue?: string
    
    Specifies the name of the queue to bind. If blank, then the last declared queue on the channel will be used.
  - Optional routingKey?: string
    
    Specifies the routing key for the binding. The routing key is used for routing messages depending on the exchange configuration. Not all exchanges use a routing key - refer to the specific exchange documentation. If the queue name is empty, the server uses the last queue declared on the channel. If the routing key is also empty, the server uses this queue name for the routing key as well. If the queue name is provided but the routing key is empty, the server does the binding with that empty routing key. The meaning of empty routing keys depends on the exchange implementation.
Returns Promise<void>
- Defined in Channel.ts:628

queueDeclare

queueDeclare(params): Promise<{
    consumerCount: number;
    messageCount: number;
    queue: string;
}>
Declare queue, create if needed. If queue empty or undefined then a random queue name is generated (see the return value).
Parameters
- params: {
      arguments?: {
          x-dead-letter-exchange?: string;
          x-dead-letter-routing-key?: string;
          x-expires?: number;
          x-max-length?: number;
          x-max-priority?: number;
          x-message-ttl?: number;
          x-overflow?: "drop-head" | "reject-publish" | "reject-publish-dlx";
          x-queue-type?: "quorum" | "classic" | "stream";
          [k: string]: any;
      };
      autoDelete?: boolean;
      durable?: boolean;
      exclusive?: boolean;
      passive?: boolean;
      queue?: string;
  }
  - Optional arguments?: {
        x-dead-letter-exchange?: string;
        x-dead-letter-routing-key?: string;
        x-expires?: number;
        x-max-length?: number;
        x-max-priority?: number;
        x-message-ttl?: number;
        x-overflow?: "drop-head" | "reject-publish" | "reject-publish-dlx";
        x-queue-type?: "quorum" | "classic" | "stream";
        [k: string]: any;
    }
    - [k: string]: any
    - Optional x-dead-letter-exchange?: string
      
      https://www.rabbitmq.com/dlx.html
    - Optional x-dead-letter-routing-key?: string
      
      https://www.rabbitmq.com/dlx.html
    - Optional x-expires?: number
      
      Queue Expiry https://www.rabbitmq.com/ttl.html#queue-ttl
    - Optional x-max-length?: number
      
      https://www.rabbitmq.com/maxlength.html
    - Optional x-max-priority?: number
      
      https://www.rabbitmq.com/priority.html
    - Optional x-message-ttl?: number
      
      Per-Queue Message TTL https://www.rabbitmq.com/ttl.html#per-queue-message-ttl
    - Optional x-overflow?: "drop-head" | "reject-publish" | "reject-publish-dlx"
      
      https://www.rabbitmq.com/maxlength.html
    - Optional x-queue-type?: "quorum" | "classic" | "stream"
      
      https://www.rabbitmq.com/quorum-queues.html https://www.rabbitmq.com/streams.html
  - Optional autoDelete?: boolean
    
    If set, the queue is deleted when all consumers have finished using it. The last consumer can be cancelled either explicitly or because its channel is closed. If there was no consumer ever on the queue, it won't be deleted. Applications can explicitly delete auto-delete queues using the Delete method as normal.
  - Optional durable?: boolean
    
    If set when creating a new queue, the queue will be marked as durable. Durable queues remain active when a server restarts. Non-durable queues (transient queues) are purged if/when a server restarts. Note that durable queues do not necessarily hold persistent messages, although it does not make sense to send persistent messages to a transient queue.
  - Optional exclusive?: boolean
    
    Exclusive queues may only be accessed by the current connection, and are deleted when that connection closes. Passive declaration of an exclusive queue by other connections are not allowed.
  - Optional passive?: boolean
    
    If set, the server will reply with Declare-Ok if the queue already exists with the same name, and raise an error if not. The client can use this to check whether a queue exists without modifying the server state. When set, all other method fields except name and no-wait are ignored. A declare with both passive and no-wait has no effect.
  - Optional queue?: string
    
    The queue name MAY be empty, in which case the server MUST create a new queue with a unique generated name and return this to the client in the Declare-Ok method. Queue names starting with "amq." are reserved for pre-declared and standardised queues. The queue name can be empty, or a sequence of these characters: letters, digits, hyphen, underscore, period, or colon.
Returns Promise<{
    consumerCount: number;
    messageCount: number;
    queue: string;
}>
- Defined in Channel.ts:561
queueDeclare(queue?): Promise<{
    consumerCount: number;
    messageCount: number;
    queue: string;
}>
Parameters
- Optional queue: string
Returns Promise<{
    consumerCount: number;
    messageCount: number;
    queue: string;
}>
- Defined in Channel.ts:562

queueDelete

queueDelete(params): Promise<{
messageCount: number;
}>
This method deletes a queue. When a queue is deleted any pending messages are sent to a dead-letter queue if this is defined in the server configuration, and all consumers on the queue are cancelled. If queue is empty or undefined then the last declared queue on the channel is used.
Parameters
- params: {
      ifEmpty?: boolean;
      ifUnused?: boolean;
      queue?: string;
  }
  - Optional ifEmpty?: boolean
    
    If set, the server will only delete the queue if it has no messages.
  - Optional ifUnused?: boolean
    
    If set, the server will only delete the queue if it has no consumers. If the queue has consumers the server does does not delete it but raises a channel exception instead.
  - Optional queue?: string
    
    Specifies the name of the queue to delete.
Returns Promise<{
messageCount: number;
}>
- Defined in Channel.ts:637
queueDelete(queue?): Promise<{
messageCount: number;
}>
Parameters
- Optional queue: string
Returns Promise<{
messageCount: number;
}>
- Defined in Channel.ts:638

queuePurge

queuePurge(queue?): Promise<{
messageCount: number;
}>
Remove all messages from a queue which are not awaiting acknowledgment. If queue is empty or undefined then the last declared queue on the channel is used.
Parameters
- Optional queue: string
Returns Promise<{
messageCount: number;
}>
- Defined in Channel.ts:650
queuePurge(params): Promise<{
messageCount: number;
}>
Parameters
- params: {
  queue?: string;
  }
  - Optional queue?: string
Returns Promise<{
messageCount: number;
}>
- Defined in Channel.ts:651

queueUnbind

queueUnbind(params): Promise<void>
Unbind a queue from an exchange.
Parameters
- params: {
      arguments?: Record<string, any>;
      exchange: string;
      queue?: string;
      routingKey?: string;
  }
  - Optional arguments?: Record<string, any>
  - exchange: string
    
    The name of the exchange to unbind from.
  - Optional queue?: string
    
    Specifies the name of the queue to unbind.
  - Optional routingKey?: string
    
    Specifies the routing key of the binding to unbind.
Returns Promise<void>
- Defined in Channel.ts:661

txCommit

txCommit(): Promise<void>
This method commits all message publications and acknowledgments performed in the current transaction. A new transaction starts immediately after a commit.

Returns Promise<void>
- Defined in Channel.ts:671

txRollback

txRollback(): Promise<void>
This method abandons all message publications and acknowledgments performed in the current transaction. A new transaction starts immediately after a rollback. Note that unacked messages will not be automatically redelivered by rollback; if that is required an explicit recover call should be issued.

Returns Promise<void>
- Defined in Channel.ts:681

txSelect

txSelect(): Promise<void>
Don't use this unless you know what you're doing. This method is provided for the sake of completeness, but you should use confirmSelect() instead.

Sets the channel to use standard transactions. The client must use this method at least once on a channel before using the Commit or Rollback methods. Mutually exclusive with confirm mode.

Returns Promise<void>
- Defined in Channel.ts:554

Class Channel

See

Example

Hierarchy

Index

Properties

Methods

Properties

active

Readonly id

Methods

basicAck

Parameters

params: { deliveryTag?: number; multiple?: boolean; }

Optional deliveryTag?: number

Optional multiple?: boolean

Returns void

basicCancel

Parameters

consumerTag: string

Returns Promise<{ consumerTag: string; }>

Parameters

params: { consumerTag: string; }

consumerTag: string

Returns Promise<{ consumerTag: string; }>

basicConsume

Parameters

params: { arguments?: { x-cancel-on-ha-failover?: boolean; x-priority?: number; [k: string]: any; }; consumerTag?: string; exclusive?: boolean; noAck?: boolean; noLocal?: boolean; queue?: string; }

Optional arguments?: { x-cancel-on-ha-failover?: boolean; x-priority?: number; [k: string]: any; }

[k: string]: any

Optional x-cancel-on-ha-failover?: boolean

Optional x-priority?: number

Optional consumerTag?: string

Optional exclusive?: boolean

Optional noAck?: boolean

Optional noLocal?: boolean

Optional queue?: string

cb: ((msg) => void)

Parameters

msg: AsyncMessage

Returns void

Returns Promise<{ consumerTag: string; }>

basicGet

Parameters

params: { noAck?: boolean; queue?: string; }

Optional noAck?: boolean

Optional queue?: string

Returns Promise<undefined | SyncMessage>

basicNack

Parameters

params: { deliveryTag?: number; multiple?: boolean; requeue?: boolean; }

Optional deliveryTag?: number

Optional multiple?: boolean

Optional requeue?: boolean

Default

Returns void

basicPublish

Parameters

envelope: Envelope

body: any

Returns Promise<void>

Parameters

queue: string

body: any

Returns Promise<void>

basicQos

Parameters

params: { global?: boolean; prefetchCount?: number; prefetchSize?: number; }

Optional global?: boolean

Optional prefetchCount?: number

Optional prefetchSize?: number

Returns Promise<void>

basicRecover

Parameters

params: { requeue?: boolean; }

Optional requeue?: boolean

Returns Promise<void>

close

Returns Promise<void>

confirmSelect

`Readonly` id

params: {
deliveryTag?: number;
multiple?: boolean;
}

`Optional` deliveryTag?: number

`Optional` multiple?: boolean

Returns Promise<{
consumerTag: string;
}>

params: {
consumerTag: string;
}

Returns Promise<{
consumerTag: string;
}>

params: {
arguments?: {
x-cancel-on-ha-failover?: boolean;
x-priority?: number;
[k: string]: any;
};
consumerTag?: string;
exclusive?: boolean;
noAck?: boolean;
noLocal?: boolean;
queue?: string;
}

`Optional` arguments?: {
x-cancel-on-ha-failover?: boolean;
x-priority?: number;
[k: string]: any;
}

`Optional` x-cancel-on-ha-failover?: boolean

`Optional` x-priority?: number

`Optional` consumerTag?: string

`Optional` exclusive?: boolean

`Optional` noAck?: boolean

`Optional` noLocal?: boolean

`Optional` queue?: string

Returns Promise<{
consumerTag: string;
}>

params: {
noAck?: boolean;
queue?: string;
}

`Optional` noAck?: boolean

`Optional` queue?: string

params: {
deliveryTag?: number;
multiple?: boolean;
requeue?: boolean;
}

`Optional` deliveryTag?: number

`Optional` multiple?: boolean

`Optional` requeue?: boolean

params: {
global?: boolean;
prefetchCount?: number;
prefetchSize?: number;
}

`Optional` global?: boolean

`Optional` prefetchCount?: number

`Optional` prefetchSize?: number

params: {
requeue?: boolean;
}

`Optional` requeue?: boolean

params: {
arguments?: Record<string, any>;
destination: string;
routingKey?: string;
source: string;
}

`Optional` arguments?: Record<string, any>

`Optional` routingKey?: string

params: {
arguments?: {
alternate-exchange?: string;
[k: string]: any;
};
autoDelete?: boolean;
durable?: boolean;
exchange: string;
internal?: boolean;
passive?: boolean;
type?: string;
}

`Optional` arguments?: {
alternate-exchange?: string;
[k: string]: any;
}

`Optional` alternate-exchange?: string

`Optional` autoDelete?: boolean

`Optional` durable?: boolean

`Optional` internal?: boolean

`Optional` passive?: boolean

`Optional` type?: string

params: {
exchange: string;
ifUnused?: boolean;
}

`Optional` ifUnused?: boolean

params: {
arguments?: Record<string, any>;
destination: string;
routingKey?: string;
source: string;
}

`Optional` arguments?: Record<string, any>

`Optional` routingKey?: string

params: {
arguments?: Record<string, any>;
exchange: string;
queue?: string;
routingKey?: string;
}

`Optional` arguments?: Record<string, any>

`Optional` queue?: string

`Optional` routingKey?: string