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adding websocket example and README

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config.ru
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require 'rubygems'
require 'sinatra'
require File.join('.', 'lib','noah')
## Uncomment the following to hardcode a redis url
#ENV['REDIS_URL'] = "redis://localhost:6379/0"
noah = Noah::App.new do
set :run, false
set :environment, :production
## Set your server list up here
# set :server, %w[thin mongrel webrick Jetty Kirk]
end
ENV['REDIS_URL'] = "redis://localhost:6379/1"
noah = Noah::App.new
run noah
examples/README.md 0 → 100644
View file @ ad98ea34
# Examples
These are some notes regarding the following examples
## websocket.rb
This is an example of using Websockets, EventMachine and Redis PubSub to provide a "status" console of sorts.
### Requirements
You'll need to grab a few additional gems
* (em-hiredis)[https://github.com/mloughran/em-hiredis]
You'll have to compile/install from source. Sorry. Should pull in the `hiredis` native ext.
* (em-websocket)[https://github.com/igrigorik/em-websocket]
Available via rubygems
### Running
To get the maximum effect, start with a clean Redis database.
* Start the server:
~/development/noah/examples$ ./websocket.rb
>> Thin web server (v1.2.7 codename No Hup)
>> Maximum connections set to 1024
>> Listening on 0.0.0.0:3000, CTRL+C to stop
You should be able to load up the "normal" Noah sample page on [http://localhost:3000].
* Load the "websocket" file
In another browser window, open the `websocket.html` file.
* Send a message
From another terminal window send the following:
curl -X PUT -d '{"name":"testhost2","status":"down"}' http://localhost:3000/h/testhost2
You should see the message come across in the browser window like so:
connected...
2 connected and waiting....
(noah.Host[testhost2].create) {"id":"1","name":"testhost2","status":"down","created_at":"2011-02-14 20:58:04 UTC","updated_at":"2011-02-14 20:58:04 UTC","services":[]}
(noah.Host[testhost2].save) {"id":"1","name":"testhost2","status":"down","created_at":"2011-02-14 20:58:04 UTC","updated_at":"2011-02-14 20:58:04 UTC","services":[]}
(noah.Host[testhost2].save) {"id":"1","name":"testhost2","status":"down","created_at":"2011-02-14 20:58:04 UTC","updated_at":"2011-02-14 20:58:04 UTC","services":[]}
(noah.Host[testhost2].update) {"id":"1","name":"testhost2","status":"down","created_at":"2011-02-14 20:58:04 UTC","updated_at":"2011-02-14 20:58:04 UTC","services":[]}
You can see the Watcher pattern in the parenthesis and then the JSON message body.
For fun, refresh the page to clear it and then run the sample data population rake task.
### Known issues
When I started working on the Watcher stuff, I realized that I'm sending A LOT of extranous messages. These are mostly the result of the way I'm creating new objects with Ohm (i.e. via `.create`).
I'll be cleaning that up and trying to get down to a single message per operation.
examples/js/FABridge.js 0 → 100644
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examples/js/WebSocketMain.swf 0 → 100644
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<div class="message"><pre><a href="/igrigorik/em-websocket/commit/cdedd7bd5c43e25fd0b30236889bc131b5cbe495">Added Gemfile.lock to gitignore</a> </pre></div>
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<span>c</span>ommit&nbsp;&nbsp;<a href="/igrigorik/em-websocket/commit/cdedd7bd5c43e25fd0b30236889bc131b5cbe495" hotkey="c">cdedd7bd5c43e25fd0b3</a><br />
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<li><a rel="nofollow" href="?locale=fr">Français</a></li>
<li><a rel="nofollow" href="?locale=ja">日本語</a></li>
<li><a rel="nofollow" href="?locale=pt-BR">Português (BR)</a></li>
<li><a rel="nofollow" href="?locale=ru">Русский</a></li>
<li><a rel="nofollow" href="?locale=zh">中文</a></li>
<li class="all"><a href="#" class="minibutton btn-forward js-all-locales"><span><span class="icon"></span>See all available languages</span></a></li>
</ul>
<div class="all-locales clearfix">
<h3>Your current locale selection: <strong>English</strong>. Choose another?</h3>
<ul class="choices">
<li><a rel="nofollow" href="?locale=en">English</a></li>
<li><a rel="nofollow" href="?locale=af">Afrikaans</a></li>
<li><a rel="nofollow" href="?locale=ca">Català</a></li>
<li><a rel="nofollow" href="?locale=cs">Čeština</a></li>
</ul>
<ul class="choices">
<li><a rel="nofollow" href="?locale=de">Deutsch</a></li>
<li><a rel="nofollow" href="?locale=es">Español</a></li>
<li><a rel="nofollow" href="?locale=fr">Français</a></li>
<li><a rel="nofollow" href="?locale=hr">Hrvatski</a></li>
</ul>
<ul class="choices">
<li><a rel="nofollow" href="?locale=id">Indonesia</a></li>
<li><a rel="nofollow" href="?locale=it">Italiano</a></li>
<li><a rel="nofollow" href="?locale=ja">日本語</a></li>
<li><a rel="nofollow" href="?locale=nl">Nederlands</a></li>
</ul>
<ul class="choices">
<li><a rel="nofollow" href="?locale=no">Norsk</a></li>
<li><a rel="nofollow" href="?locale=pl">Polski</a></li>
<li><a rel="nofollow" href="?locale=pt-BR">Português (BR)</a></li>
<li><a rel="nofollow" href="?locale=ru">Русский</a></li>
</ul>
<ul class="choices">
<li><a rel="nofollow" href="?locale=sr">Српски</a></li>
<li><a rel="nofollow" href="?locale=sv">Svenska</a></li>
<li><a rel="nofollow" href="?locale=zh">中文</a></li>
</ul>
</div>
</div>
<div class="fade"></div>
</div>
<script>window._auth_token = "7ee0ec2c300dda8607aa77a9bf60aa6ef031c060"</script>
<div id="keyboard_shortcuts_pane" style="display:none">
<h2>Keyboard Shortcuts</h2>
<div class="columns threecols">
<div class="column first">
<h3>Site wide shortcuts</h3>
<dl class="keyboard-mappings">
<dt>s</dt>
<dd>Focus site search</dd>
</dl>
<dl class="keyboard-mappings">
<dt>?</dt>
<dd>Bring up this help dialog</dd>
</dl>
</div><!-- /.column.first -->
<div class="column middle">
<h3>Commit list</h3>
<dl class="keyboard-mappings">
<dt>j</dt>
<dd>Move selected down</dd>
</dl>
<dl class="keyboard-mappings">
<dt>k</dt>
<dd>Move selected up</dd>
</dl>
<dl class="keyboard-mappings">
<dt>t</dt>
<dd>Open tree</dd>
</dl>
<dl class="keyboard-mappings">
<dt>p</dt>
<dd>Open parent</dd>
</dl>
<dl class="keyboard-mappings">
<dt>c <em>or</em> o <em>or</em> enter</dt>
<dd>Open commit</dd>
</dl>
</div><!-- /.column.first -->
<div class="column last">
<h3>Pull request list</h3>
<dl class="keyboard-mappings">
<dt>j</dt>
<dd>Move selected down</dd>
</dl>
<dl class="keyboard-mappings">
<dt>k</dt>
<dd>Move selected up</dd>
</dl>
<dl class="keyboard-mappings">
<dt>o <em>or</em> enter</dt>
<dd>Open issue</dd>
</dl>
</div><!-- /.columns.last -->
</div><!-- /.columns.equacols -->
<div class="rule"></div>
<h3>Issues</h3>
<div class="columns threecols">
<div class="column first">
<dl class="keyboard-mappings">
<dt>j</dt>
<dd>Move selected down</dd>
</dl>
<dl class="keyboard-mappings">
<dt>k</dt>
<dd>Move selected up</dd>
</dl>
<dl class="keyboard-mappings">
<dt>x</dt>
<dd>Toggle select target</dd>
</dl>
<dl class="keyboard-mappings">
<dt>o <em>or</em> enter</dt>
<dd>Open issue</dd>
</dl>
</div><!-- /.column.first -->
<div class="column middle">
<dl class="keyboard-mappings">
<dt>I</dt>
<dd>Mark selected as read</dd>
</dl>
<dl class="keyboard-mappings">
<dt>U</dt>
<dd>Mark selected as unread</dd>
</dl>
<dl class="keyboard-mappings">
<dt>e</dt>
<dd>Close selected</dd>
</dl>
<dl class="keyboard-mappings">
<dt>y</dt>
<dd>Remove selected from view</dd>
</dl>
</div><!-- /.column.middle -->
<div class="column last">
<dl class="keyboard-mappings">
<dt>c</dt>
<dd>Create issue</dd>
</dl>
<dl class="keyboard-mappings">
<dt>l</dt>
<dd>Create label</dd>
</dl>
<dl class="keyboard-mappings">
<dt>i</dt>
<dd>Back to inbox</dd>
</dl>
<dl class="keyboard-mappings">
<dt>u</dt>
<dd>Back to issues</dd>
</dl>
<dl class="keyboard-mappings">
<dt>/</dt>
<dd>Focus issues search</dd>
</dl>
</div>
</div>
<div class="rule"></div>
<h3>Network Graph</h3>
<div class="columns equacols">
<div class="column first">
<dl class="keyboard-mappings">
<dt>← <em>or</em> h</dt>
<dd>Scroll left</dd>
</dl>
<dl class="keyboard-mappings">
<dt>→ <em>or</em> l</dt>
<dd>Scroll right</dd>
</dl>
<dl class="keyboard-mappings">
<dt>↑ <em>or</em> k</dt>
<dd>Scroll up</dd>
</dl>
<dl class="keyboard-mappings">
<dt>↓ <em>or</em> j</dt>
<dd>Scroll down</dd>
</dl>
<dl class="keyboard-mappings">
<dt>t</dt>
<dd>Toggle visibility of head labels</dd>
</dl>
</div><!-- /.column.first -->
<div class="column last">
<dl class="keyboard-mappings">
<dt>shift ← <em>or</em> shift h</dt>
<dd>Scroll all the way left</dd>
</dl>
<dl class="keyboard-mappings">
<dt>shift → <em>or</em> shift l</dt>
<dd>Scroll all the way right</dd>
</dl>
<dl class="keyboard-mappings">
<dt>shift ↑ <em>or</em> shift k</dt>
<dd>Scroll all the way up</dd>
</dl>
<dl class="keyboard-mappings">
<dt>shift ↓ <em>or</em> shift j</dt>
<dd>Scroll all the way down</dd>
</dl>
</div><!-- /.column.last -->
</div>
</div>
<!--[if IE 8]>
<script type="text/javascript" charset="utf-8">
$(document.body).addClass("ie8")
</script>
<![endif]-->
<!--[if IE 7]>
<script type="text/javascript" charset="utf-8">
$(document.body).addClass("ie7")
</script>
<![endif]-->
<script type='text/javascript'></script>
</body>
</html>
examples/js/swfobject.js 0 → 100644
View file @ ad98ea34
This source diff could not be displayed because it is too large. You can view the blob instead.
examples/js/web_socket.js 0 → 100644
View file @ ad98ea34
// Copyright: Hiroshi Ichikawa <http://gimite.net/en/>
// Lincense: New BSD Lincense
// Reference: http://dev.w3.org/html5/websockets/
// Reference: http://tools.ietf.org/html/draft-hixie-thewebsocketprotocol
(function() {
if (window.WebSocket) return;
var console = window.console;
if (!console) console = {log: function(){ }, error: function(){ }};
function hasFlash() {
if ('navigator' in window && 'plugins' in navigator && navigator.plugins['Shockwave Flash']) {
return !!navigator.plugins['Shockwave Flash'].description;
}
if ('ActiveXObject' in window) {
try {
return !!new ActiveXObject('ShockwaveFlash.ShockwaveFlash').GetVariable('$version');
} catch (e) {}
}
return false;
}
if (!hasFlash()) {
console.error("Flash Player is not installed.");
return;
}
WebSocket = function(url, protocol, proxyHost, proxyPort, headers) {
var self = this;
self.readyState = WebSocket.CONNECTING;
self.bufferedAmount = 0;
WebSocket.__addTask(function() {
self.__flash =
WebSocket.__flash.create(url, protocol, proxyHost || null, proxyPort || 0, headers || null);
self.__flash.addEventListener("open", function(fe) {
try {
if (self.onopen) self.onopen();
} catch (e) {
console.error(e.toString());
}
});
self.__flash.addEventListener("close", function(fe) {
try {
if (self.onclose) self.onclose();
} catch (e) {
console.error(e.toString());
}
});
self.__flash.addEventListener("message", function(fe) {
var data = decodeURIComponent(fe.getData());
try {
if (self.onmessage) {
var e;
if (window.MessageEvent) {
e = document.createEvent("MessageEvent");
e.initMessageEvent("message", false, false, data, null, null, window);
} else { // IE
e = {data: data};
}
self.onmessage(e);
}
} catch (e) {
console.error(e.toString());
}
});
self.__flash.addEventListener("stateChange", function(fe) {
try {
self.readyState = fe.getReadyState();
self.bufferedAmount = fe.getBufferedAmount();
} catch (e) {
console.error(e.toString());
}
});
//console.log("[WebSocket] Flash object is ready");
});
}
WebSocket.prototype.send = function(data) {
if (!this.__flash || this.readyState == WebSocket.CONNECTING) {
throw "INVALID_STATE_ERR: Web Socket connection has not been established";
}
var result = this.__flash.send(data);
if (result < 0) { // success
return true;
} else {
this.bufferedAmount = result;
return false;
}
};
WebSocket.prototype.close = function() {
if (!this.__flash) return;
if (this.readyState != WebSocket.OPEN) return;
this.__flash.close();
// Sets/calls them manually here because Flash WebSocketConnection.close cannot fire events
// which causes weird error:
// > You are trying to call recursively into the Flash Player which is not allowed.
this.readyState = WebSocket.CLOSED;
if (this.onclose) this.onclose();
};
/**
* Implementation of {@link <a href="http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-registration">DOM 2 EventTarget Interface</a>}
*
* @param {string} type
* @param {function} listener
* @param {boolean} useCapture !NB Not implemented yet
* @return void
*/
WebSocket.prototype.addEventListener = function(type, listener, useCapture) {
if (!('__events' in this)) {
this.__events = {};
}
if (!(type in this.__events)) {
this.__events[type] = [];
if ('function' == typeof this['on' + type]) {
this.__events[type].defaultHandler = this['on' + type];
this['on' + type] = WebSocket_FireEvent(this, type);
}
}
this.__events[type].push(listener);
};
/**
* Implementation of {@link <a href="http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-registration">DOM 2 EventTarget Interface</a>}
*
* @param {string} type
* @param {function} listener
* @param {boolean} useCapture NB! Not implemented yet
* @return void
*/
WebSocket.prototype.removeEventListener = function(type, listener, useCapture) {
if (!('__events' in this)) {
this.__events = {};
}
if (!(type in this.__events)) return;
for (var i = this.__events.length; i > -1; --i) {
if (listener === this.__events[type][i]) {
this.__events[type].splice(i, 1);
break;
}
}
};
/**
* Implementation of {@link <a href="http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-registration">DOM 2 EventTarget Interface</a>}
*
* @param {WebSocketEvent} event
* @return void
*/
WebSocket.prototype.dispatchEvent = function(event) {
if (!('__events' in this)) throw 'UNSPECIFIED_EVENT_TYPE_ERR';
if (!(event.type in this.__events)) throw 'UNSPECIFIED_EVENT_TYPE_ERR';
for (var i = 0, l = this.__events[event.type].length; i < l; ++ i) {
this.__events[event.type][i](event);
if (event.cancelBubble) break;
}
if (false !== event.returnValue &&
'function' == typeof this.__events[event.type].defaultHandler)
{
this.__events[event.type].defaultHandler(event);
}
};
/**
*
* @param {object} object
* @param {string} type
*/
function WebSocket_FireEvent(object, type) {
return function(data) {
var event = new WebSocketEvent();
event.initEvent(type, true, true);
event.target = event.currentTarget = object;
for (var key in data) {
event[key] = data[key];
}
object.dispatchEvent(event, arguments);
};
}
/**
* Basic implementation of {@link <a href="http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-interface">DOM 2 EventInterface</a>}
*
* @class
* @constructor
*/
function WebSocketEvent(){}
/**
*
* @type boolean
*/
WebSocketEvent.prototype.cancelable = true;
/**
*
* @type boolean
*/
WebSocketEvent.prototype.cancelBubble = false;
/**
*
* @return void
*/
WebSocketEvent.prototype.preventDefault = function() {
if (this.cancelable) {
this.returnValue = false;
}
};
/**
*
* @return void
*/
WebSocketEvent.prototype.stopPropagation = function() {
this.cancelBubble = true;
};
/**
*
* @param {string} eventTypeArg
* @param {boolean} canBubbleArg
* @param {boolean} cancelableArg
* @return void
*/
WebSocketEvent.prototype.initEvent = function(eventTypeArg, canBubbleArg, cancelableArg) {
this.type = eventTypeArg;
this.cancelable = cancelableArg;
this.timeStamp = new Date();
};
WebSocket.CONNECTING = 0;
WebSocket.OPEN = 1;
WebSocket.CLOSED = 2;
WebSocket.__tasks = [];
WebSocket.__initialize = function() {
if (!WebSocket.__swfLocation) {
//console.error("[WebSocket] set WebSocket.__swfLocation to location of WebSocketMain.swf");
//return;
WebSocket.__swfLocation = "js/WebSocketMain.swf";
}
var container = document.createElement("div");
container.id = "webSocketContainer";
// Puts the Flash out of the window. Note that we cannot use display: none or visibility: hidden
// here because it prevents Flash from loading at least in IE.
container.style.position = "absolute";
container.style.left = "-100px";
container.style.top = "-100px";
var holder = document.createElement("div");
holder.id = "webSocketFlash";
container.appendChild(holder);
document.body.appendChild(container);
swfobject.embedSWF(
WebSocket.__swfLocation, "webSocketFlash", "8", "8", "9.0.0",
null, {bridgeName: "webSocket"}, null, null,
function(e) {
if (!e.success) console.error("[WebSocket] swfobject.embedSWF failed");
}
);
FABridge.addInitializationCallback("webSocket", function() {
try {
//console.log("[WebSocket] FABridge initializad");
WebSocket.__flash = FABridge.webSocket.root();
WebSocket.__flash.setCallerUrl(location.href);
for (var i = 0; i < WebSocket.__tasks.length; ++i) {
WebSocket.__tasks[i]();
}
WebSocket.__tasks = [];
} catch (e) {
console.error("[WebSocket] " + e.toString());
}
});
};
WebSocket.__addTask = function(task) {
if (WebSocket.__flash) {
task();
} else {
WebSocket.__tasks.push(task);
}
}
// called from Flash
function webSocketLog(message) {
console.log(decodeURIComponent(message));
}
// called from Flash
function webSocketError(message) {
console.error(decodeURIComponent(message));
}
if (window.addEventListener) {
window.addEventListener("load", WebSocket.__initialize, false);
} else {
window.attachEvent("onload", WebSocket.__initialize);
}
})();
examples/websocket.html 0 → 100644
View file @ ad98ea34
<html>
<head>
<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js'></script>
<script src='js/swfobject.js'></script>
<script src='js/FABridge.js'></script>
<script src='js/web_socket.js'></script>
<script>
$(document).ready(function(){
function debug(str){ $("#debug").append("<p>" + str); };
ws = new WebSocket("ws://localhost:3001/");
ws.onmessage = function(evt) { $("#msg").append("<p>"+evt.data+"</p>"); };
ws.onclose = function() { debug("socket closed"); };
ws.onopen = function() {
debug("connected...");
};
});
</script>
</head>
<body>
<div id="debug"></div>
<div id="msg"></div>
</body>
</html>
examples/websocket.rb 0 → 100755
View file @ ad98ea34
#!/usr/bin/env ruby
$:.unshift(File.expand_path(File.join(File.dirname(__FILE__), "..", "lib")))
require 'rubygems'
require 'em-websocket'
require 'em-hiredis'
require 'thin'
require 'noah'
## Uncomment the following to hardcode a redis url
#ENV['REDIS_URL'] = "redis://localhost:6379/0"
EventMachine.run do
# Passing messages...like a boss
@channel = EventMachine::Channel.new
Thin::Server.start Noah::App
r = EventMachine::Hiredis::Client.connect
r.psubscribe("noah.*")
r.on(:pmessage) do |pattern, event, message|
@channel.push "(#{event}) #{message}"
end
EventMachine::WebSocket.start(:host => "0.0.0.0", :port => 3001) do |ws|
ws.onopen {
sub = @channel.subscribe { |msg|
ws.send msg
}
@channel.push "#{sub} connected and waiting...."
ws.onmessage { |msg|
@channel.push "<#{sub}>: #{msg}"
}
ws.onclose {
@channel.unsubscribe(sub)
}
}
end
end
lib/noah/app.rb
View file @ ad98ea34
......@@ -19,6 +19,7 @@ module Noah
set :logging, true
set :raise_errors, false
set :show_exceptions, false
set :run, false
end
configure(:development) do
......
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