queue-proccessor
v0.1.8
Published
A simple queue processor to handle async tasks
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Queue Proccessor
To process a queue centrally. Making it possible to start and stop the process at any time.
This project started to deal with an issue when dispatching messages to SQS and Pub/Sub as the client SDK doesn't handle any asynchronous dispatch messages, when you haven't used await
to wait for dispatch or when we are using it in another part of the code and the client has many messages.
To avoid lost messages, we need to create a set of messages and send them one by one as quickly as possible.
Usage
import { QueueProccessor } from "queue-proccessor";
async function myHandlerProccessMethod (data: number) {
return new Promise((resolve) => {
setTimeout(() => {
resolve(data);
}, 100);
});
}
const queueProccessorNumber = new QueueProccessor<Object>(myHandlerProccessMethod);
queueProccessorNumber.add({id:1})
queueProccessorNumber.add({id:2})
queueProccessorNumber.start()
Methods
start():void
Start to proccess queue if has message. If is not, keep watch if the queue grows.
add(data:T):void
To push a new message to be handled
stop():void
stop the proccess queue. It is possible to proccess keep running until the current handler message not finish to handle.
Properties
isProccessing
boolean
: true if is proccessing. When stop
is called, it is possible to proccess keep running until the current handler message not finish to handle.
isStarted
boolean
: true if is started
queueLength
number
: Current length of queue with no handler messages