Add streaming API in Node.js
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11
package.json
11
package.json
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@ -2,31 +2,37 @@
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"name": "mastodon",
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"name": "mastodon",
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"scripts": {
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"scripts": {
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"test": "mocha --require ./spec/javascript/setup.js --compilers js:babel-register ./spec/javascript/components/*.test.jsx",
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"test": "mocha --require ./spec/javascript/setup.js --compilers js:babel-register ./spec/javascript/components/*.test.jsx",
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"storybook": "start-storybook -p 9001 -c storybook"
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"storybook": "start-storybook -p 9001 -c storybook",
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"start": "babel-node ./streaming/index.js --presets es2015,stage-2"
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},
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},
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"dependencies": {
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"dependencies": {
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"@kadira/storybook": "^2.24.0",
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"@kadira/storybook": "^2.24.0",
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"axios": "^0.14.0",
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"axios": "^0.14.0",
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"babel-cli": "^6.22.2",
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"babel-plugin-react-transform": "^2.0.2",
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"babel-plugin-react-transform": "^2.0.2",
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"babel-plugin-transform-decorators-legacy": "^1.3.4",
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"babel-plugin-transform-decorators-legacy": "^1.3.4",
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"babel-plugin-transform-object-rest-spread": "^6.8.0",
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"babel-plugin-transform-object-rest-spread": "^6.8.0",
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"babel-preset-es2015": "^6.13.2",
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"babel-preset-es2015": "^6.22.0",
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"babel-preset-react": "^6.11.1",
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"babel-preset-react": "^6.11.1",
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"babel-preset-stage-2": "^6.22.0",
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"babelify": "^7.3.0",
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"babelify": "^7.3.0",
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"browserify": "^13.1.0",
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"browserify": "^13.1.0",
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"browserify-incremental": "^3.1.1",
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"browserify-incremental": "^3.1.1",
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"chai": "^3.5.0",
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"chai": "^3.5.0",
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"chai-enzyme": "^0.5.2",
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"chai-enzyme": "^0.5.2",
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"css-loader": "^0.26.1",
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"css-loader": "^0.26.1",
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"dotenv": "^4.0.0",
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"emojione": "latest",
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"emojione": "latest",
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"enzyme": "^2.4.1",
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"enzyme": "^2.4.1",
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"es6-promise": "^3.2.1",
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"es6-promise": "^3.2.1",
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"express": "^4.14.1",
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"http-link-header": "^0.5.0",
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"http-link-header": "^0.5.0",
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"immutable": "^3.8.1",
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"immutable": "^3.8.1",
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"intl": "^1.2.5",
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"intl": "^1.2.5",
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"jsdom": "^9.6.0",
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"jsdom": "^9.6.0",
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"mocha": "^3.1.1",
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"mocha": "^3.1.1",
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"node-sass": "^4.0.0",
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"node-sass": "^4.0.0",
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"pg": "^6.1.2",
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"react": "^15.3.2",
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"react": "^15.3.2",
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"react-addons-perf": "^15.3.2",
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"react-addons-perf": "^15.3.2",
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"react-addons-pure-render-mixin": "^15.3.1",
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"react-addons-pure-render-mixin": "^15.3.1",
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@ -47,6 +53,7 @@
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"react-simple-dropdown": "^1.1.4",
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"react-simple-dropdown": "^1.1.4",
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"react-storybook-addon-intl": "^0.1.0",
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"react-storybook-addon-intl": "^0.1.0",
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"react-toggle": "^2.1.1",
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"react-toggle": "^2.1.1",
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"redis": "^2.6.5",
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"redux": "^3.6.0",
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"redux": "^3.6.0",
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"redux-immutable": "^3.0.8",
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"redux-immutable": "^3.0.8",
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"redux-sounds": "^1.1.1",
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"redux-sounds": "^1.1.1",
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@ -0,0 +1,97 @@
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import dotenv from 'dotenv'
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import express from 'express'
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import redis from 'redis'
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import pg from 'pg'
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dotenv.config()
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const pgConfigs = {
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development: {
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database: 'mastodon_development',
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host: '/var/run/postgresql',
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max: 10
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},
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production: {
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user: process.env.DB_USER || 'mastodon',
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password: process.env.DB_PASS || '',
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database: process.env.DB_NAME || 'mastodon_production',
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host: process.env.DB_HOST || 'localhost',
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port: process.env.DB_PORT || 5432,
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max: 10
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}
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}
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const app = express()
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const env = process.env.NODE_ENV || 'development'
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const pgPool = new pg.Pool(pgConfigs[env])
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const authenticationMiddleware = (req, res, next) => {
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const authorization = req.get('Authorization')
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if (!authorization) {
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err = new Error('Missing access token')
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err.statusCode = 401
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return next(err)
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}
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const token = authorization.replace(/^Bearer /, '')
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pgPool.connect((err, client, done) => {
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if (err) {
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return next(err)
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}
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client.query('SELECT oauth_access_tokens.resource_owner_id, users.account_id FROM oauth_access_tokens INNER JOIN users ON oauth_access_tokens.resource_owner_id = users.id WHERE token = $1 LIMIT 1', [token], (err, result) => {
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done()
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if (err) {
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return next(err)
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}
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if (result.rows.length === 0) {
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err = new Error('Invalid access token')
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err.statusCode = 401
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return next(err)
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}
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req.accountId = result.rows[0].account_id
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next()
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})
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})
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}
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const errorMiddleware = (err, req, res, next) => {
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res.writeHead(err.statusCode || 500, { 'Content-Type': 'application/json' })
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res.end(JSON.stringify({ error: `${err}` }))
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}
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const streamFrom = (id, res) => {
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res.setHeader('Content-Type', 'text/event-stream')
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res.setHeader('Transfer-Encoding', 'chunked')
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const redisClient = redis.createClient()
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redisClient.on('message', (channel, message) => {
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const { event, payload } = JSON.parse(message)
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res.write(`event: ${event}\n`)
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res.write(`data: ${payload}\n\n`)
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})
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setInterval(() => res.write('\n'), 15000)
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redisClient.subscribe(id)
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}
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app.use(authenticationMiddleware)
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app.use(errorMiddleware)
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app.get('/api/v1/streaming/user', (req, res) => streamFrom(`timeline:${req.accountId}`, res))
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app.get('/api/v1/streaming/public', (_, res) => streamFrom('timeline:public', res))
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app.get('/api/v1/streaming/hashtag', (req, res) => streamFrom(`timeline:hashtag:${req.params.tag}`, res))
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app.listen(4000)
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