middleware-resolver

Dependency (and semi-event) based middleware running.

Task format

A tasks/jobs list is an array containing task descriptors:

property | description ---|--- requires | Jobs required to be finished before this one can run. optional | Jobs that, if present, should be run before this one. before | Jobs that, if present, will only run after this job completes (reverse dependency) notif | Don't run if task is completed. Implies optional dependency priority | Priority hint. Higher means closer to the outter/first run middleware. task | function (done, next) to execute. In the function body next("result_name");

For example:

[
    {
        name: "task7",
        requires: [ "task6" ],
        optional: "task1",
	priority: 10,
        task: function (done, next) {
            // more code

            /*  Emit the task name and, optionally, any auxiliary event /
                dependency that is satisfied. The done function can be used as
                many times as practical, or not at all (eg. a case of failure).
             */
            done("task7");

            // more code
            next(); // Run the next task
            // more code
        }
    }
]

Examples

Take a look at test.js in the repository for a simple example.

Notes & license

This project is available on GitHub and npm.

The project is licensed as LGPLv3, the license file is included in the project directory.

Copyright 2015 Stefan Hamminga - prjct.net