cm-update-server.js

var restify = require('restify');
var config = require('config');
var serverConfig = config.Server;
var models = require('./models/');
var ResultConverter = require('./result-converter.js');

var server = restify.createServer({ name: 'cm-updater-server' });

var extractRequestParameters = function(req) {
	var requestParameters = null;

	// Prior to CM11 the CMUpdater app did not send the correct content-type.
	// Thus auto-parsing the body did not work.
	if (req.is('json')) {
		requestParameters = req.body;
	} else if (!!req.body) {
		try {
			requestParameters = JSON.parse(req.body);
		} catch (err) {
			// Ignore, should be handled with a 404 by the caller
			// (the result is null in this case).
		}
	}

	return requestParameters;
}

models.sequelize.sync().then(function() {
	server.listen(serverConfig.listeningPort, serverConfig.listeningAddress, function () {
		console.log('%s listening at %s', server.name, server.url);
	});

	server.use(restify.bodyParser(serverConfig.bodyParserserverConfiguration || {}));

	// Conditionally enable the throttle module with the settings from the serverConfig.
	if (serverConfig.throttleserverConfiguration && serverConfig.throttleserverConfiguration.isEnabled) {
		server.use(restify.throttle(serverConfig.throttleserverConfiguration));
	}

	if (serverConfig.serveStaticConfiguration) {
		serverConfig.serveStaticConfiguration.forEach(function(staticSettings) {
			server.get(new RegExp(staticSettings.urlPattern), restify.serveStatic(staticSettings.options));
		});
	}

	server.get('/changelog/:romId', function (req, res, next) {
		models.Rom.findById(req.params.romId).then(function(rom) {
			if (!rom) {
				res.send(404);
				return next();
			}

			if (!rom.isActive) {
				res.send(410);
				return next();
			}

			var findParentRomHandler = function(childRom, resultHandler) {
				childRom.getParentRom().then(function(parentRom) {
					resultHandler(parentRom);
				}).catch(function(err) {
					resultHandler(null);
				});
			}

			ResultConverter.getChangelogContent(rom, findParentRomHandler, function(body) {
				res.writeHead(200, {
					'Content-Length': Buffer.byteLength(body),
					'Content-Type': 'text/plain'
				});

				res.end(body);

				return next();
			});
		}).catch(function(err) {
			res.send(500);
			return next();
		});
	});

	server.get('/download/rom/:romId', function (req, res, next) {
		models.Rom.find({
			include: [
				{
					model: models.RomVariant
				}
			],
			where: {
				id: req.params.romId
			}
		}).then(function(rom) {
			if (!rom) {
				res.send(404);
			} else if (!rom.isActive) {
				res.send(410);
			} else {
				var realDownloadUrl = ResultConverter.getRealRomDownloadUrl(rom);

				res.writeHead(301, { Location: realDownloadUrl });
				res.end();

				models.Download.build({
					RomId: rom.id,
					userAgent: req.headers['user-agent'],
				}).save().catch(function (err) {
					// Ignoring errors here since those have no impact for the user.
				});
			}

			return next();
		}).catch(function(err) {
			res.send(500);
			return next();
		});
	});

	server.get('/download/incremental/:incrementalId', function (req, res, next) {
		models.Incremental.find({
			include: [
				{
					model: models.RomVariant
				}
			],
			where: {
				id: req.params.incrementalId
			}
		}).then(function(incremental) {
			if (!incremental) {
				res.send(404);
			} else if (!incremental.isActive) {
				res.send(410);
			} else {
				var realDownloadUrl = ResultConverter.getRealIncrementalDownloadUrl(incremental);

				res.writeHead(301, { Location: realDownloadUrl });
				res.end();

				models.Download.build({
					IncrementalId: incremental.id,
					userAgent: req.headers['user-agent'],
				}).save().catch(function (err) {
					// Ignoring errors here since those have no impact for the user.
				});
			}

			return next();
		}).catch(function(err) {
			res.send(500);
			return next();
		});
	});

	server.post('/api/v1/build/get_delta', function(req, res, next) {
		var requestParameters = extractRequestParameters(req);

		if (!requestParameters || !requestParameters.source_incremental || !requestParameters.target_incremental) {
			res.send(400, ResultConverter.convertIncrementalErrors(
				"source_incremental and target_incremental are required parameters!"));
			return next();
		}

		models.Incremental.find({ include: [
			{
				model: models.Rom,
				as: 'sourceRom',
				where: {
					incrementalId: requestParameters.source_incremental
				}
			},
			{
				model: models.Rom,
				as: 'targetRom',
				where: {
					incrementalId: requestParameters.target_incremental
				}
			},
			{
				model: models.RomVariant,
			},
		]}).then(function(incremental) {
			if (!incremental || !incremental.isActive) {
				res.send(200, ResultConverter.convertIncrementalErrors("No matching incremental update found!"));
			} else {
				res.send(200, ResultConverter.convertIncremental(incremental));
			}

			return next();
		}).catch(function(err) {
			res.send(500, ResultConverter.convertIncrementalErrors('Database error.'));
			return next();
		});
	});

	server.post('/api', function(req, res, next) {
		var requestParameters = extractRequestParameters(req);
		var responseId = null;

		if (!requestParameters || !requestParameters.params) {
			res.send(400, ResultConverter.convertRomListError(responseId, 'params is a required parameter!'));
			return next();
		} else if (requestParameters.method != 'get_all_builds') {
			res.send(400, ResultConverter.convertRomListError(responseId, requestParameters.method + ' is not a valid "method"!'));
			return next();
		}

		models.Rom.findAll({
			include: [
				{
					model: models.RomVariant,
					include: [
						{
							model: models.Device,
							where: {
								name: requestParameters.params.device,
							}
						}
					]
				}
			],
			where: {
				updateChannel: requestParameters.params.channels,
				isActive: true,
			},
		}).then(function(roms) {
			res.send(200, ResultConverter.convertRomList(responseId, roms));
			return next();
		}).catch(function(err) {
			res.send(500, ResultConverter.convertRomListError(responseId, 'Database error.'));
			return next();
		});
	});
});