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changefeed

v1.5.4

Published

Change Feed Modules

Downloads

30

Readme

node-sdc-changefeed

This repository is part of the Joyent Triton project.

SDC Changefeed provides support for publishing and listening to change feeds in Triton via Node.js libraries and a CLI.

Installation

$ npm install changefeed

Development

Before committing be sure to, at least run:

$ make check      # lint and style checks
$ make test       # run tests

Test

Simple tests (requires a running CoaL) can be run using:

$ make test

CLI

$ changefeedsnoop -h 127.0.0.1 -p 8080 -r vm -s nic,alias | bunyan --color

Setup

Publisher

var mod_bunyan = require('bunyan');
var mod_changefeed = require('changefeed');
var mod_restify = require('restify');

var options = {
    backoff: {
        maxTimeout: Infinity,
        minTimeout: 10,
        retries: Infinity
    },
    log: mod_bunyan.createLogger({
        name: 'publisher_test',
        level: process.env['LOG_LEVEL'] || 'trace',
        stream: process.stderr
    }),
    maxAge: 2000,
    moray: {
        bucketName: 'pub_change_bucket',
        host: '10.99.99.17',
        resolvers: {
            resolvers: ['10.99.99.11']
        },
        timeout: 200,
        minTimeout: 1000,
        maxTimeout: 2000,
        port: 2020
    }
    restifyServer: server,
    resources: resources
};

var publisher = mod_changefeed.createPublisher(options);

Listener

var mod_bunyan = require('bunyan');
var mod_changefeed = require('changefeed');

var options = {
    backoff: {
        maxTimeout: Infinity,
        minTimeout: 10,
        retries: Infinity
    },
    log: mod_bunyan.createLogger({
        name: 'listener_test',
        level: process.env['LOG_LEVEL'] || 'error',
        stream: process.stderr
    }),
    url: 'http://localhost',
    instance: 'uuid goes here',
    service: 'tcns',
    changeKind: {
        resource: 'vm',
        subResources: ['nic', 'alias']
    }
};

var listener = mod_changefeed.createListener(options);

listener.on('bootstrap', function (resource) {
    // do bootstrap, then pipe to a change handler.
    doBootstrap(resource);
    listener.pipe(change_handler);
});

listener.on('error', function (err) {
    console.log(err);
});

listener.on('connection-end', function () {
    listener.unpipe(change_handler);
});

Documentation

Detailed documentation is located at docs/index.md.

See RFD 0005 Triton Change Feed Support for current design and architecture decisions.

License

"node-sdc-changefeed" is licensed under the Mozilla Public License version 2.0. See the file LICENSE.