335 lines
12 KiB
CoffeeScript
335 lines
12 KiB
CoffeeScript
config = require './config'
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util = require 'util'
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http = require 'http'
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url = require 'url'
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common = require './common'
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db = require './db'
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mongodb = require 'mongodb'
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querystring = require 'querystring'
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query = require './query'
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apiFunctions = require './api-functions'
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# regular expression objects
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DEVICE_TASKS_REGEX = /^\/devices\/([a-zA-Z0-9\-\_\%]+)\/tasks\/?$/
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TASKS_REGEX = /^\/tasks\/([a-zA-Z0-9\-\_\%]+)(\/[a-zA-Z_]*)?$/
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TAGS_REGEX = /^\/devices\/([a-zA-Z0-9\-\_\%]+)\/tags\/([a-zA-Z0-9\-\_\%]+)\/?$/
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PRESETS_REGEX = /^\/presets\/([a-zA-Z0-9\-\_\%]+)\/?$/
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OBJECTS_REGEX = /^\/objects\/([a-zA-Z0-9\-\_\%]+)\/?$/
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FILES_REGEX = /^\/files\/([a-zA-Z0-9\-\_\%\ \.\/\(\)]+)\/?$/
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PING_REGEX = /^\/ping\/([a-zA-Z0-9\-\_\.]+)\/?$/
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QUERY_REGEX = /^\/([a-zA-Z0-9_]+s)\/?$/
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cluster = require 'cluster'
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numCPUs = require('os').cpus().length
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if cluster.isMaster
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cluster.on('listening', (worker, address) ->
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util.log("Worker #{worker.process.pid} listening to #{address.address}:#{address.port}")
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)
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cluster.on('exit', (worker, code, signal) ->
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util.log("Worker #{worker.process.pid} died (#{worker.process.exitCode})")
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setTimeout(()->
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cluster.fork()
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, config.WORKER_RESPAWN_TIME)
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)
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for i in [1 .. numCPUs]
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cluster.fork()
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else
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server = http.createServer (request, response) ->
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chunks = []
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bytes = 0
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request.addListener 'data', (chunk) ->
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chunks.push(chunk)
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bytes += chunk.length
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request.getBody = (encoding) ->
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# Write all chunks into a Buffer
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body = new Buffer(bytes)
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offset = 0
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chunks.forEach((chunk) ->
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chunk.copy(body, offset, 0, chunk.length)
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offset += chunk.length
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)
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# Return encoded (default to UTF8) string
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return body.toString(encoding || 'utf8', 0, body.byteLength)
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request.addListener 'end', () ->
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body = request.getBody()
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urlParts = url.parse(request.url, true)
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if PRESETS_REGEX.test(urlParts.pathname)
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presetName = querystring.unescape(PRESETS_REGEX.exec(urlParts.pathname)[1])
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if request.method == 'PUT'
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preset = JSON.parse(body)
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preset._id = presetName
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db.presetsCollection.save(preset, (err) ->
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db.memcached.del('presets', (err, res) ->
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)
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db.memcached.del('presets_hash', (err, res) ->
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)
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if err
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response.writeHead(500)
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response.end(err)
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return
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response.writeHead(200)
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response.end()
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)
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else if request.method == 'DELETE'
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db.presetsCollection.remove({'_id' : presetName}, (err, removedCount) ->
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db.memcached.del('presets', (err, res) ->
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)
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db.memcached.del('presets_hash', (err, res) ->
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)
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if err
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response.writeHead(500)
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response.end(err)
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return
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response.writeHead(200)
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response.end()
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)
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else
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response.writeHead 405, {'Allow': 'PUT, DELETE'}
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response.end('405 Method Not Allowed')
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else if OBJECTS_REGEX.test(urlParts.pathname)
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objectName = querystring.unescape(OBJECTS_REGEX.exec(urlParts.pathname)[1])
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if request.method == 'PUT'
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object = JSON.parse(body)
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object._id = objectName
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db.objectsCollection.save(object, (err) ->
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db.memcached.del('objects', (err, res) ->
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)
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db.memcached.del('presets_hash', (err, res) ->
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)
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if err
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response.writeHead(500)
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response.end(err)
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return
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response.writeHead(200)
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response.end()
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)
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else if request.method == 'DELETE'
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db.objectsCollection.remove({'_id' : objectName}, (err, removedCount) ->
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db.memcached.del('objects', (err, res) ->
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)
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db.memcached.del('presets_hash', (err, res) ->
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)
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if err
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response.writeHead(500)
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response.end(err)
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return
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response.writeHead(200)
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response.end()
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)
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else
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response.writeHead 405, {'Allow': 'PUT, DELETE'}
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response.end('405 Method Not Allowed')
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else if TAGS_REGEX.test(urlParts.pathname)
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r = TAGS_REGEX.exec(urlParts.pathname)
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deviceId = querystring.unescape(r[1])
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tag = querystring.unescape(r[2])
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if request.method == 'POST'
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db.devicesCollection.update({'_id' : deviceId}, {'$addToSet' : {'_tags' : tag}}, {safe: true}, (err) ->
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db.memcached.del("#{deviceId}_presets_hash", (err, res) ->
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)
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if err
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response.writeHead(500)
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response.end(err)
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return
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response.writeHead(200)
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response.end()
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)
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else if request.method == 'DELETE'
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db.devicesCollection.update({'_id' : deviceId}, {'$pull' : {'_tags' : tag}}, {safe: true}, (err) ->
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db.memcached.del("#{deviceId}_presets_hash", (err, res) ->
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)
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if err
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response.writeHead(500)
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response.end(err)
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return
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response.writeHead(200)
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response.end()
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)
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else
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response.writeHead 405, {'Allow': 'POST, DELETE'}
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response.end('405 Method Not Allowed')
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else if DEVICE_TASKS_REGEX.test(urlParts.pathname)
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if request.method == 'POST'
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deviceId = querystring.unescape(DEVICE_TASKS_REGEX.exec(urlParts.pathname)[1])
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if body
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task = JSON.parse(body)
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task.device = deviceId
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apiFunctions.insertTasks(task, (err) ->
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db.memcached.del("#{deviceId}_presets_hash", (err, res) ->
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)
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if err
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response.writeHead(500)
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response.end(err)
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return
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if urlParts.query.connection_request?
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apiFunctions.connectionRequest(deviceId, (err) ->
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if err
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response.writeHead(202)
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response.end()
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else
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apiFunctions.watchTask(task._id, config.DEVICE_ONLINE_THRESHOLD, (err) ->
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if err
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response.writeHead(202)
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response.end()
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return
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response.writeHead(200)
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response.end()
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)
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)
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else
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response.writeHead(202)
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response.end()
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)
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else if urlParts.query.connection_request?
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# no task, send connection request only
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apiFunctions.connectionRequest(deviceId, (err) ->
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if err
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response.writeHead 504
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response.end()
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return
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response.writeHead 200
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response.end()
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)
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else
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response.writeHead(400)
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response.end()
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else
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response.writeHead 405, {'Allow': 'POST'}
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response.end('405 Method Not Allowed')
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else if TASKS_REGEX.test(urlParts.pathname)
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r = TASKS_REGEX.exec(urlParts.pathname)
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taskId = mongodb.ObjectID(querystring.unescape(r[1]))
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action = try querystring.unescape(r[2])
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if not action? or action is '/'
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if request.method == 'DELETE'
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db.tasksCollection.remove({'_id' : taskId}, (err, removedCount) ->
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if err
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response.writeHead(500)
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response.end(err)
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return
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response.writeHead(200)
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response.end()
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)
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else
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response.writeHead 405, {'Allow': 'PUT DELETE'}
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response.end('405 Method Not Allowed')
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else if action is '/retry'
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if request.method == 'POST'
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db.tasksCollection.update({_id : taskId}, {$unset : {fault : 1}, $inc : {retries : 1}, '$set' : {timestamp : new Date()}}, (err, count) ->
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# TODO need to invalidate presets hash for the device
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response.writeHead(200)
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response.end()
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)
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else
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response.writeHead 405, {'Allow': 'POST'}
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response.end('405 Method Not Allowed')
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else
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response.writeHead(404)
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response.end()
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else if FILES_REGEX.test(urlParts.pathname)
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filename = querystring.unescape(FILES_REGEX.exec(urlParts.pathname)[1])
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if request.method == 'PUT'
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metadata = {
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SoftwareVersion : request.headers.softwareversion,
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HardwareVersion : request.headers.hardwareversion,
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Manufacturer : request.headers.manufacturer,
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}
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gs = new mongodb.GridStore(db.mongo.db, filename, 'w', {metadata : metadata})
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gs.open((err, gs) ->
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gs.write(request.getBody('binary'), (err, res) ->
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gs.close((err) ->
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)
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response.writeHead(201)
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response.end()
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)
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)
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else if request.method == 'DELETE'
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mongodb.GridStore.unlink(db.mongo.db, filename, (err) ->
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response.writeHead(200)
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response.end()
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)
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else
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response.writeHead 405, {'Allow': 'PUT, DELETE'}
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response.end('405 Method Not Allowed')
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else if PING_REGEX.test(urlParts.pathname)
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host = querystring.unescape(PING_REGEX.exec(urlParts.pathname)[1])
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require('child_process').exec("ping -w 1 -i 0.2 -c 3 #{host}", (err, stdout, stderr) ->
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if err?
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response.writeHead(404, {'Cache-Control' : 'no-cache'})
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response.end()
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return
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response.writeHead(200, {'Content-Type' : 'text/plain', 'Cache-Control' : 'no-cache'})
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response.end(stdout)
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)
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else if QUERY_REGEX.test(urlParts.pathname)
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collectionName = QUERY_REGEX.exec(urlParts.pathname)[1]
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if request.method isnt 'GET'
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response.writeHead 405, {'Allow' : 'GET'}
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response.end('405 Method Not Allowed')
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return
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collection = db["#{collectionName}Collection"]
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if not collection?
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response.writeHead 404
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response.end('404 Not Found')
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return
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if urlParts.query.query?
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q = JSON.parse(querystring.unescape(urlParts.query.query))
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else
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q = {}
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q = query.expand(q) if collectionName is 'devices'
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if urlParts.query.projection?
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projection = {}
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for p in urlParts.query.projection.split(',')
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p = p.trim()
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projection[p] = 1
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if collectionName is 'devices'
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for k,v of config.ALIASES
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if k == p or common.startsWith(k, "#{p}.")
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projection[a] = 1 for a in v
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cur = collection.find(q, projection, {batchSize : 50})
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if urlParts.query.sort?
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s = JSON.parse(querystring.unescape(urlParts.query.sort))
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sort = {}
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for k,v of s
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if config.ALIASES[k]?
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sort[a] = v for a in config.ALIASES[k]
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else
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sort[k] = v
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cur.sort(sort)
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cur.skip(parseInt(urlParts.query.skip)) if urlParts.query.skip?
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cur.limit(parseInt(urlParts.query.limit)) if urlParts.query.limit?
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cur.count((err, total) ->
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response.writeHead(200, {'Content-Type' : 'application/json', 'total' : total})
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response.write("[\n")
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i = 0
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cur.each((err, item) ->
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if item is null
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response.end("\n]")
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else
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response.write(",\n") if i++
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apiFunctions.addAliases(item) if collectionName is 'devices'
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response.write(JSON.stringify(item))
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)
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)
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else
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response.writeHead 404
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response.end('404 Not Found')
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server.listen config.API_PORT, config.API_INTERFACE
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