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sockethub-client.js
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(function (root, factory) {
if (typeof define === 'function' && define.amd) {
define(factory);
} else {
root.SockethubClient = factory();
}
}(this, function () {
/**
* almond 0.1.4 Copyright (c) 2011, The Dojo Foundation All Rights Reserved.
* Available via the MIT or new BSD license.
* see: http://github.com/jrburke/almond for details
*/
//Going sloppy to avoid 'use strict' string cost, but strict practices should
//be followed.
/*jslint sloppy: true */
/*global setTimeout: false */
var requirejs, require, define;
(function (undef) {
var main, req,
defined = {},
waiting = {},
config = {},
defining = {},
aps = [].slice;
/**
* Given a relative module name, like ./something, normalize it to
* a real name that can be mapped to a path.
* @param {String} name the relative name
* @param {String} baseName a real name that the name arg is relative
* to.
* @returns {String} normalized name
*/
function normalize(name, baseName) {
var nameParts, nameSegment, mapValue, foundMap,
foundI, foundStarMap, starI, i, j, part,
baseParts = baseName && baseName.split("/"),
map = config.map,
starMap = (map && map['*']) || {};
//Adjust any relative paths.
if (name && name.charAt(0) === ".") {
//If have a base name, try to normalize against it,
//otherwise, assume it is a top-level require that will
//be relative to baseUrl in the end.
if (baseName) {
//Convert baseName to array, and lop off the last part,
//so that . matches that "directory" and not name of the baseName's
//module. For instance, baseName of "one/two/three", maps to
//"one/two/three.js", but we want the directory, "one/two" for
//this normalization.
baseParts = baseParts.slice(0, baseParts.length - 1);
name = baseParts.concat(name.split("/"));
//start trimDots
for (i = 0; i < name.length; i += 1) {
part = name[i];
if (part === ".") {
name.splice(i, 1);
i -= 1;
} else if (part === "..") {
if (i === 1 && (name[2] === '..' || name[0] === '..')) {
//End of the line. Keep at least one non-dot
//path segment at the front so it can be mapped
//correctly to disk. Otherwise, there is likely
//no path mapping for a path starting with '..'.
//This can still fail, but catches the most reasonable
//uses of ..
break;
} else if (i > 0) {
name.splice(i - 1, 2);
i -= 2;
}
}
}
//end trimDots
name = name.join("/");
}
}
//Apply map config if available.
if ((baseParts || starMap) && map) {
nameParts = name.split('/');
for (i = nameParts.length; i > 0; i -= 1) {
nameSegment = nameParts.slice(0, i).join("/");
if (baseParts) {
//Find the longest baseName segment match in the config.
//So, do joins on the biggest to smallest lengths of baseParts.
for (j = baseParts.length; j > 0; j -= 1) {
mapValue = map[baseParts.slice(0, j).join('/')];
//baseName segment has config, find if it has one for
//this name.
if (mapValue) {
mapValue = mapValue[nameSegment];
if (mapValue) {
//Match, update name to the new value.
foundMap = mapValue;
foundI = i;
break;
}
}
}
}
if (foundMap) {
break;
}
//Check for a star map match, but just hold on to it,
//if there is a shorter segment match later in a matching
//config, then favor over this star map.
if (!foundStarMap && starMap && starMap[nameSegment]) {
foundStarMap = starMap[nameSegment];
starI = i;
}
}
if (!foundMap && foundStarMap) {
foundMap = foundStarMap;
foundI = starI;
}
if (foundMap) {
nameParts.splice(0, foundI, foundMap);
name = nameParts.join('/');
}
}
return name;
}
function makeRequire(relName, forceSync) {
return function () {
//A version of a require function that passes a moduleName
//value for items that may need to
//look up paths relative to the moduleName
return req.apply(undef, aps.call(arguments, 0).concat([relName, forceSync]));
};
}
function makeNormalize(relName) {
return function (name) {
return normalize(name, relName);
};
}
function makeLoad(depName) {
return function (value) {
defined[depName] = value;
};
}
function callDep(name) {
if (waiting.hasOwnProperty(name)) {
var args = waiting[name];
delete waiting[name];
defining[name] = true;
main.apply(undef, args);
}
if (!defined.hasOwnProperty(name)) {
throw new Error('No ' + name);
}
return defined[name];
}
/**
* Makes a name map, normalizing the name, and using a plugin
* for normalization if necessary. Grabs a ref to plugin
* too, as an optimization.
*/
function makeMap(name, relName) {
var prefix, plugin,
index = name.indexOf('!');
if (index !== -1) {
prefix = normalize(name.slice(0, index), relName);
name = name.slice(index + 1);
plugin = callDep(prefix);
//Normalize according
if (plugin && plugin.normalize) {
name = plugin.normalize(name, makeNormalize(relName));
} else {
name = normalize(name, relName);
}
} else {
name = normalize(name, relName);
}
//Using ridiculous property names for space reasons
return {
f: prefix ? prefix + '!' + name : name, //fullName
n: name,
p: plugin
};
}
function makeConfig(name) {
return function () {
return (config && config.config && config.config[name]) || {};
};
}
main = function (name, deps, callback, relName) {
var cjsModule, depName, ret, map, i,
args = [],
usingExports;
//Use name if no relName
relName = relName || name;
//Call the callback to define the module, if necessary.
if (typeof callback === 'function') {
//Pull out the defined dependencies and pass the ordered
//values to the callback.
//Default to [require, exports, module] if no deps
deps = !deps.length && callback.length ? ['require', 'exports', 'module'] : deps;
for (i = 0; i < deps.length; i += 1) {
map = makeMap(deps[i], relName);
depName = map.f;
//Fast path CommonJS standard dependencies.
if (depName === "require") {
args[i] = makeRequire(name);
} else if (depName === "exports") {
//CommonJS module spec 1.1
args[i] = defined[name] = {};
usingExports = true;
} else if (depName === "module") {
//CommonJS module spec 1.1
cjsModule = args[i] = {
id: name,
uri: '',
exports: defined[name],
config: makeConfig(name)
};
} else if (defined.hasOwnProperty(depName) || waiting.hasOwnProperty(depName)) {
args[i] = callDep(depName);
} else if (map.p) {
map.p.load(map.n, makeRequire(relName, true), makeLoad(depName), {});
args[i] = defined[depName];
} else if (!defining[depName]) {
throw new Error(name + ' missing ' + depName);
}
}
ret = callback.apply(defined[name], args);
if (name) {
//If setting exports via "module" is in play,
//favor that over return value and exports. After that,
//favor a non-undefined return value over exports use.
if (cjsModule && cjsModule.exports !== undef &&
cjsModule.exports !== defined[name]) {
defined[name] = cjsModule.exports;
} else if (ret !== undef || !usingExports) {
//Use the return value from the function.
defined[name] = ret;
}
}
} else if (name) {
//May just be an object definition for the module. Only
//worry about defining if have a module name.
defined[name] = callback;
}
};
requirejs = require = req = function (deps, callback, relName, forceSync, alt) {
if (typeof deps === "string") {
//Just return the module wanted. In this scenario, the
//deps arg is the module name, and second arg (if passed)
//is just the relName.
//Normalize module name, if it contains . or ..
return callDep(makeMap(deps, callback).f);
} else if (!deps.splice) {
//deps is a config object, not an array.
config = deps;
if (callback.splice) {
//callback is an array, which means it is a dependency list.
//Adjust args if there are dependencies
deps = callback;
callback = relName;
relName = null;
} else {
deps = undef;
}
}
//Support require(['a'])
callback = callback || function () {};
//If relName is a function, it is an errback handler,
//so remove it.
if (typeof relName === 'function') {
relName = forceSync;
forceSync = alt;
}
//Simulate async callback;
if (forceSync) {
main(undef, deps, callback, relName);
} else {
setTimeout(function () {
main(undef, deps, callback, relName);
}, 15);
}
return req;
};
/**
* Just drops the config on the floor, but returns req in case
* the config return value is used.
*/
req.config = function (cfg) {
config = cfg;
return req;
};
define = function (name, deps, callback) {
//This module may not have dependencies
if (!deps.splice) {
//deps is not an array, so probably means
//an object literal or factory function for
//the value. Adjust args.
callback = deps;
deps = [];
}
waiting[name] = [name, deps, callback];
};
define.amd = {
jQuery: true
};
}());
define("vendor/almond", function(){});
define('sockethub/extend',[], function() {
function extend(target) {
var sources = Array.prototype.slice.call(arguments, 1);
sources.forEach(function(source) {
for(var key in source) {
if(typeof(source[key]) === 'object' &&
typeof(target[key]) === 'object') {
extend(target[key], source[key]);
} else {
target[key] = source[key];
}
}
});
return target;
}
return extend;
});
(function() {
function getPromise(builder) {
var promise;
if(typeof(builder) === 'function') {
setTimeout(function() {
try {
builder(promise);
} catch(e) {
promise.reject(e);
}
}, 0);
}
var consumers = [], success, result;
function notifyConsumer(consumer) {
if(success) {
var nextValue;
if(consumer.fulfilled) {
try {
nextValue = [consumer.fulfilled.apply(null, result)];
} catch(exc) {
consumer.promise.reject(exc);
return;
}
} else {
nextValue = result;
}
if(nextValue[0] && typeof(nextValue[0].then) === 'function') {
nextValue[0].then(consumer.promise.fulfill, consumer.promise.reject);
} else {
consumer.promise.fulfill.apply(null, nextValue);
}
} else {
if(consumer.rejected) {
var ret;
try {
ret = consumer.rejected.apply(null, result);
} catch(exc) {
consumer.promise.reject(exc);
return;
}
if(ret && typeof(ret.then) === 'function') {
ret.then(consumer.promise.fulfill, consumer.promise.reject);
} else {
consumer.promise.fulfill(ret);
}
} else {
consumer.promise.reject.apply(null, result);
}
}
}
function resolve(succ, res) {
if(result) {
console.log("WARNING: Can't resolve promise, already resolved!");
return;
}
success = succ;
result = Array.prototype.slice.call(res);
setTimeout(function() {
var cl = consumers.length;
if(cl === 0 && (! success)) {
// console.error("Possibly uncaught error: ", result);
}
for(var i=0;i<cl;i++) {
notifyConsumer(consumers[i]);
}
consumers = undefined;
}, 0);
}
promise = {
then: function(fulfilled, rejected) {
var consumer = {
fulfilled: typeof(fulfilled) === 'function' ? fulfilled : undefined,
rejected: typeof(rejected) === 'function' ? rejected : undefined,
promise: getPromise()
};
if(result) {
setTimeout(function() {
notifyConsumer(consumer)
}, 0);
} else {
consumers.push(consumer);
}
return consumer.promise;
},
fulfill: function() {
resolve(true, arguments);
return this;
},
reject: function() {
resolve(false, arguments);
return this;
}
};
return promise;
};
if(typeof(module) !== 'undefined') {
module.exports = getPromise;
} else if(typeof(define) === 'function') {
define('vendor/promising',[], function() { return getPromise; });
} else if(typeof(window) !== 'undefined') {
window.promising = getPromise;
}
})();
define('sockethub/event_handling',[], function() {
var methods = {
/**
* Method: on
*
* Install an event handler for the given event name.
*/
on: function(eventName, handler) {
this._validateEvent(eventName);
this._handlers[eventName].push(handler);
},
_emit: function(eventName) {
this._validateEvent(eventName);
var args = Array.prototype.slice.call(arguments, 1);
this._handlers[eventName].forEach(function(handler) {
handler.apply(this, args);
});
},
_validateEvent: function(eventName) {
if(! (eventName in this._handlers)) {
throw "Unknown event: " + eventName;
}
},
_delegateEvent: function(eventName, target) {
target.on(eventName, function(event) {
this._emit(eventName, event);
}.bind(this));
},
_addEvent: function(eventName) {
this._handlers[eventName] = [];
}
};
/**
* Function: eventHandling
*
* Mixes event handling functionality into an object.
*
* The first parameter is always the object to be extended.
* All remaining parameter are expected to be strings, interpreted as valid event
* names.
*
* Example:
* (start code)
* var MyConstructor = function() {
* eventHandling(this, 'connected', 'disconnected');
*
* this._emit('connected');
* this._emit('disconnected');
* // this would throw an exception:
* //this._emit('something-else');
* };
*
* var myObject = new MyConstructor();
* myObject.on('connected', function() { console.log('connected'); });
* myObject.on('disconnected', function() { console.log('disconnected'); });
* // this would throw an exception as well:
* //myObject.on('something-else', function() {});
*
* (end code)
*/
return function(object) {
var eventNames = Array.prototype.slice.call(arguments, 1);
for(var key in methods) {
object[key] = methods[key];
}
object._handlers = {};
eventNames.forEach(function(eventName) {
object._addEvent(eventName);
});
};
});
define('sockethub/client',[
'./extend',
'../vendor/promising',
'./event_handling'
], function(extend, promising, eventHandling) {
/**
* Class: SockethubClient
*
* Provides a boilerplate client, that knows no verbs and no meaning in the
* messages it processes, apart from the "rid" property.
*
* The client can then be extended with functionality, by using <declareVerb>,
* or be used directly by sending objects using <sendObject>.
*
* Constructor parameters:
* jsonClient - a <JSONClient> instance
*/
var SockethubClient = function(jsonClient, options) {
this.jsonClient = jsonClient;
this.options = options;
this._ridPromises = {};
eventHandling(this, 'connected', 'disconnected', 'failed', 'message', 'unexpected-response');
jsonClient.on('message', this._processIncoming.bind(this));
this._delegateEvent('connected', jsonClient);
this._delegateEvent('disconnected', jsonClient);
this._delegateEvent('failed', jsonClient);
};
SockethubClient.prototype = {
/**
* Method: declareVerb
*
* Declares a new verb for this client.
*
* Declaring a verb will:
* - Add a method to the client, named like the verb.
* - Convert positional arguments of that method into message attributes.
* - Keep a template for messages sent using that verb.
*
* Parameters:
* verb - (string) name of the verb, such as "post"
* attributeNames - (array) list of positional arguments for the verb method
* template - (object) template to build messages upon
*
* Example:
* (start code)
*
* // declare the "register" verb:
* client.declareVerb('register', ['object'], {
* platform: 'dispatcher'
* });
*
* // send a "register" message, using the just declared method:
* client.register({ secret: '123' });
*
* // will send the following JSON:
* {
* "verb": "register",
* "platform": "dispatcher",
* "object": {
* "secret": "123"
* },
* "rid": 1
* }
*
* (end code)
*
* Receiving the response:
* The declared method returns a promise, which will notify you as soon as
* a response with the right "rid" is received.
*
* Example:
* (start code)
*
* client.register({ secret: 123 }).
* then(function(response) {
* // response received
* }, function(error) {
* // something went wrong
* });
*
* (end code)
*
* Nested attributes:
* If you want your verb methods to be able to modify deeply nested JSON
* structures through positional arguments, you can specify the path using
* dot notation.
*
* Example:
* (start code)
*
* client.declareVerb('set', ['target.platform', 'object'], {
* platform: "dispatcher",
* target: {}
* });
*
* client.set("smtp", {
* server: "example.com"
* });
*
* // passing in "smtp" as "platform" here does not alter the toplevel
* // "platform" attribute, but instead adds one to "target":
* {
* "verb": "set",
* "platform": "dispatcher",
* "target": {
* "platform": "smtp"
* },
* "object": {
* "server": "example.com"
* }
* }
*
* (end code)
*/
declareVerb: function(verb, attributeNames, template, decorator) {
this[verb] = function() {
//
var args = Array.prototype.slice.call(arguments);
var object = extend({}, template, { verb: verb });
attributeNames.forEach(function(attrName, index) {
var value = args[index];
var current = this._getDeepAttr(object, attrName);
if(typeof(current) === 'undefined' && typeof(value) === 'undefined') {
throw new Error(
"Expected a value for parameter " + attrName + ", but got undefined!"
);
}
this._setDeepAttr(object, attrName, value);
}.bind(this));
var extensionArg = args[attributeNames.length];
if(typeof(extensionArg) === 'object') {
extend(object, extensionArg);
}
return this.sendObject(object);
};
if(decorator) {
this[verb] = decorator(this[verb].bind(this));
}
},
declareEvent: function(eventName) {
this._addEvent(eventName);
},
disconnect: function() {
this.jsonClient.disconnect();
},
// incremented upon each call to sendObject
_ridCounter: 0,
/**
* Method: sendObject
*
* Sends the object through the JSONClient, attaching a "rid" attribute to
* link it to a response.
*
* Returns a promise, which will be fulfilled as soon as a response carrying
* the same "rid" attribute is received.
*
* You can either call this directly, building messages by hand or first
* declare a verb using <declareVerb>, which will then call sendObject for you.
*
*/
sendObject: function(object) {
var promise = promising();
// generate a new rid and store promise reference:
var rid = ++this._ridCounter;
this._ridPromises[rid] = promise;
object = extend(object, { rid: rid });
console.log('SEND', object);
// non-dectructively add 'rid' and send!
this.jsonClient.send(object);
return promise;
},
// _getDeepAttr / _setDeepAttr are used in declareType.
_getDeepAttr: function(object, path, _parts) {
var parts = _parts || path.split('.');
var next = object[parts.shift()];
return parts.length ? this._getDeepAttr(next, undefined, parts) : next;
},
_setDeepAttr: function(object, path, value, _parts) {
var parts = _parts || path.split('.');
if(parts.length > 1) {
this._setDeepAttr(object[parts.shift()], undefined, value, parts);
} else {
object[parts[0]] = value;
}
},
_processIncoming: function(object) {
console.log(object.verb === 'confirm' ? 'CONFIRM' : 'RECEIVE', object);
var rid = object.rid;
if(typeof(rid) !== 'undefined') {
var promise = this._ridPromises[rid];
if(promise) {
// rid is known.
if(object.verb === 'confirm') {
// exception: confirm results are ignored, unless their status is fals
if(object.status) {
return;
} else {
promise.reject(object);
}
} else {
promise.fulfill(object);
}
delete this._ridPromises[rid];
} else {
// rid is not known. -> unexpected response!
this._emit('unexpected-response', object);
}
} else {
// no rid set. -> this is not a response, but a message!
this._emit('message', object);
}
}
};
return SockethubClient;
});
define('sockethub/json_client',['./event_handling'], function(eventHandling) {
/**
* Class: JSONClient
*
* Exchanges JSON messages via a WebSocket
*
* Parameters:
* socket - a WebSocket object
*
*/
var JSONClient = function(socket) {
this.socket = socket;
eventHandling(
this,
/**
* Event: message
*
* Emitted when a new JSON message is received.
*
* Parameters:
* object - the unpacked JSON object
*
*/
'message',
/**
* Event: connected
*
* Emitted when the websocket is opened.
*/
'connected',
/**
* Event: disconnected
*
* Emitted when the websocket is closed.
*/
'disconnected',
/**
* Event: disconnected
*
* Emitted when the websocket connection failed.
*/
'failed'
);
// start listening.
this._listen();
};
JSONClient.prototype = {
/**
* Method: send
*
* Serialize given object and send it.
*/
send: function(object) {
this.socket.send(JSON.stringify(object));
},
/**
* Method: disconnect
*
* Close the socket.
*/
disconnect: function() {
this.socket.close();
},
// Start listening on socket
_listen: function() {
this.socket.onmessage = this._processMessageEvent.bind(this);
this.connected = false;
this.socket.onopen = function() {
this.connected = true;
this._emit('connected');
}.bind(this);
this.socket.onclose = function() {
if(this.connected) {
this._emit('disconnected');
this.connected = false;
} else {
this._emit('failed');
}
}.bind(this);
},
// Emit "message" event
_processMessageEvent: function(event) {
this._emit('message', JSON.parse(event.data));
}
};
return JSONClient;
});
define('sockethub/connect',[
'./extend',
'./json_client',
'./client'
], function(extend, JSONClient, SockethubClient) {
var DEFAULT_PORT = 10550;
var DEFAULT_PATH = '/sockethub';
var DEFAULT_PROTOCOL = 'sockethub';
/**
* Method: SockethubClient.connect
*
* Singleton method, used to construct a new client.
*
* Takes either a URI or an Object with connection options as it's only argument.
* Returns a new <SockethubClient> instance, connected to a WebSocket through a
* <JSONClient>.
*/
var connect = function(uriOrOptions, options) {
var uri;
if(typeof(options) !== 'object') {
options = {};
}
if(typeof(uriOrOptions) === 'string' &&
! uriOrOptions.match(/wss?\:\/\//)) {
uriOrOptions = { host: uriOrOptions };
}
if(typeof(uriOrOptions) === 'string') {
uri = uriOrOptions;
} else if(typeof(uriOrOptions) === 'object') {
extend(options, uriOrOptions);
if(! options.host) {
throw "Required 'host' option not present";
}
if(! options.port) {
options.port = DEFAULT_PORT;
}
if(! options.path) {
options.path = DEFAULT_PATH;
}
uri = (
(options.ssl ? 'wss' : 'ws')
+ '://'
+ options.host
+ ':'
+ options.port
+ options.path
);
} else {
throw "SockethubClient.connect expects a URI, specified via a String or Object.";
}
return new SockethubClient(new JSONClient(new WebSocket(uri, DEFAULT_PROTOCOL)), options);
};
return connect;
});
define('sockethub/remoteStorage',[], function() {
var module = function(privateClient, publicClient) {
privateClient.declareType('config', {
"description" : "sockethub config file",
"type" : "object",
"properties": {
"host": {
"type": "string",
"description": "the hostname to connect to",
"format": "uri",
"required": true
},
"port": {
"type": "number",
"description": "the port number to connect to",
"required": true
},
"secret": {
"type": "string",
"description": "the secret to identify yourself with the sockethub server",
"required": true
}
}
});
return {
exports: {
getConfig: function() {
return privateClient.getObject('config.json');
},
writeConfig: function(data) {
//console.log(' [RS] writeConfig()');
return privateClient.storeObject('config', 'config.json', data);
}
}
};
};
function connectRemoteStorage(remoteStorage) {
remoteStorage.defineModule('sockethub', module);
remoteStorage.access.claim('sockethub', 'rw');