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@forrestjs/service-fetchq-task

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@forrestjs/service-fetchq-task

Simple API to run singleton tasks over a Fetchq queue.

  • 5.0.0-alpha.3
  • Source
  • npm
  • Socket score

Version published
Weekly downloads
326
increased by7.24%
Maintainers
1
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Fetchq Task

Let you add singleton tasks to a Fetchq queue.

👉 Each task gets executed by one single worker at the time, no matter the horizontal scalability of the queue.

You keep scaling the associated workers as so to run different tasks in parallel.

This is suitable for running stuff akin to a CRON Job.

Configuration

forrest.run({
  settings: {
    fetchq: {
      task: {
        // Register tasks at config time:
        // (see "Add Tasks" paragraph for details)
        register: [
          {
            subject: 'foobar',
            handler: (doc) => doc.reschedule('+1m')
          }
        ],

        queue: {
          // Customize the queue name:
          name: 'foobar',

          // Fine tune the queue performances:
          // https://github.com/fetchq/node-client#queues-configuration
          settings: {}
        },
        
        worker: {
          // Fine tune the worker performances:
          // https://github.com/fetchq/node-client#workers-configuration
          settings: {}
        }
      }
    }
  }
})

Add Tasks

As configuration:

forrest.run({
  settings: {
    fetchq: {
      task: {
        register: [
          {
            // Document in the tasks' queue:
            subject: "cqrs-todos",
            payload: { target: "todos" },
            // Worker for this specific task:
            handler: (doc, ctx) => {
              console.log("cqrs-todos", doc.payload);
              return doc.reschedule("+1s");
            }
          }
        ]
      }
    }
  }
})

As an extension:

const myFeature = () => [
  {
    target: "$FETCHQ_REGISTER_TASK",
    handler: {
      // Document in the tasks' queue:
      subject: "cqrs-todos",
      payload: { target: "todos" },
      // Worker for this specific task:
      handler: (doc, ctx) => {
        console.log("cqrs-todos", doc.payload);
        return doc.reschedule("+1s");
      }
    }
  }
]

Task Configuration

resetOnBoot

Set it to true and the task will be completely reset at boot time.

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Package last updated on 23 Sep 2022

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