amqplib
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An AMQP 0-9-1 (e.g., RabbitMQ) library and client.
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RabbitMQ Stream Examples
---
The [stream queues](https://www.rabbitmq.com/streams.html) are available starting from RabbitMQ 3.9
These examples show how to use stream queues with the lib.
Send a message to a stream queue
```
node send_stream.js
```
Receive all the messages from stream queue:
```
node receive_stream.js
```
Consumers can be configured to receive messages using an offset via the `x-stream-offset` argument. e.g.
```js
channel.consume(queue, onMessage, {
noAck: false,
arguments: {
'x-stream-offset': 'first'
}
});
```
RabbitMQ supports six different types of offset, however specifying them can be
| Offset Type | Example Value | Notes |
|-----------|----------------------------------------------------------|-------|
| First | `{'x-stream-offset':'first'}` | Start from the first message in the log |
| Last | `{'x-stream-offset':'last'}` | Start from the last "chunk" of messages (could be multiple messages) |
| Next | `{'x-stream-offset':'next'}` | Start from the next message (the default) |
| Offset | `{'x-stream-offset':5}` | a numerical value specifying an exact offset to attach to the log at |
| Timestamp | `{'x-stream-offset':{'!':'timestamp',value:1686519750}}` | a timestamp value specifying the point in time to attach to the log at. The timestamp must be the number of seconds since 00:00:00 UTC, 1970-01-01. Consumers can receive messages published a bit before the specified timestamp. |
| Interval | `{'x-stream-offset':'1h'}` | the time interval relative to current time to attach the log at. Valid units are Y, M, D, h, m and s |
See https://www.rabbitmq.com/streams.html#consuming for more details