diff --git a/.DS_Store b/.DS_Store new file mode 100644 index 0000000..65ff8e8 Binary files /dev/null and b/.DS_Store differ diff --git a/README.md b/README.md new file mode 100644 index 0000000..62043b3 --- /dev/null +++ b/README.md @@ -0,0 +1,24 @@ +ECA - Event Condition Action +================================= + +ECA was developed as an educational tool aimed at a diverse CS student +population with programming experience ranging from "very little" to "very +much": it allows students to quickly develop a prototype real-time Twitter +Dashboard that really looks cool. And it is open to more advanced programming +to challenge students who have more experience. +The basis of ECA is a rule system that reacts to externally generated events. + +The architecture favours simplicity over robustness. Multithreading is used in +favour of more suitable parallelism options such as greenlets to keep +dependencies to a minimum for ease of deployment. + +Documentation can be found in the Wiki of this github site. + +This program is not intended for production use. It may contain security issues +not tolerable outside of a controlled environment. + +ECA requires Python 3.2 or higher. + + + + diff --git a/TODO.txt b/TODO.txt new file mode 100644 index 0000000..cfef46f --- /dev/null +++ b/TODO.txt @@ -0,0 +1,21 @@ +[x] Refactor handlers in neca.py to eca/http.py +[x] Add session manager to lazy-create new Contexts +[x] Context switching through session manager +[x] Add SSE handler to allow event-based pushes +[x] Add pubsub for SSE handlers to allow emitting from within ECA context +[x] Rework static file handling to not be the exception to normal operations +[x] Add basic Javascript handling of events +[x] Add a way to configure twitter (event generation) input thread +[ ] Add control to event generation thread through HTTP interface +[x] Document all core modules +[ ] Add sample component of a graph/twitter list +[ ] Harden system against programmer error (i.e. sanity check all rules-module data flow) +[x] Add a delayed event scheduler (for 'fire in 2 seconds' things) +[x] locatie tweets http://library.ewi.utwente.nl/ecadata/batatweets.txt +[x] Clean up samples and rename leading sample to template.py + template dir +[x] Button Block +[ ] Session block +[x] Full speed tweet time_factor +[x] Docs in graph.js +[x] emit() in non-server context should doe something useful +[x] Rework rules set to non-global object diff --git a/demos/advancedcontexts.py b/demos/advancedcontexts.py new file mode 100644 index 0000000..f044a4d --- /dev/null +++ b/demos/advancedcontexts.py @@ -0,0 +1,56 @@ +from eca import * +import random + +# declare two separate rule sets + +consumer = Rules() +producer = Rules() + + +# default init + +@event('init') +def bootstrap(c, e): + # start a few contexts for the generation of stock quotes + # (The simple workload here can easily be done in a single context, but we + # do this in separate contexts to give an example of the feature.) + spawn_context({'symbol':'GOOG', 'start':500.0, 'delay':1.2}, rules=producer, daemon=True) + spawn_context({'symbol':'AAPL', 'start':99.0, 'delay':0.9}, rules=producer, daemon=True) + spawn_context(rules=consumer, daemon=True) + +@event('end-of-input') +def done(c,e): + # terminate if the input is closed + shutdown() + + +# producer rules + +@producer.event('init') +def start_work(c, e): + c.symbol = e.data['symbol'] + c.delay = e.data['delay'] + + fire('sample', { + 'previous': e.data['start'] + }) + +@producer.event('sample') +def work(c, e): + current = e.data['previous'] + random.uniform(-0.5, 0.5) + + fire_global('quote', { + 'symbol': c.symbol, + 'value': current + }) + + fire('sample', { + 'previous': current + }, delay=c.delay) + + +# consumer rules + +@consumer.event('quote') +def show_quote(c, e): + print("Quote for {symbol}: {value}".format(**e.data)) diff --git a/demos/average.py b/demos/average.py new file mode 100644 index 0000000..f41b9b9 --- /dev/null +++ b/demos/average.py @@ -0,0 +1,47 @@ +from eca import * + + +@event('main') +def setup(ctx, e): + """ + Initialise the context with an accumulator value, and inform + the user about the fact that we process input. + """ + print("Enter a number per line and end with EOF:") + print("(EOF is ctrl+d under linux and MacOSes, ctrl+z followed by return under Windows)") + ctx.accumulator = 0 + ctx.count = 0 + + +@event('line') +def line(ctx, e): + """ + Tries to parse the input line as a number and add it to the accumulator. + """ + try: + value = float(e.data) if '.' in e.data else int(e.data) + ctx.accumulator += value + ctx.count += 1 + print("sum = " + str(ctx.accumulator)) + except ValueError: + print("'{}' is not a number.".format(e.data)) + + +@event('end-of-input') +@condition(lambda c,e: c.count > 0) +def done(ctx, e): + """ + Outputs the final average to the user. + """ + print("{} samples with average of {}".format(ctx.count, ctx.accumulator / ctx.count)) + shutdown() + + +@event('end-of-input') +@condition(lambda c,e: c.count == 0) +def no_input(ctx, e): + """ + Invoked of no input is given and input is finished. + """ + print("0 samples. \"Does not compute!\"") + shutdown() diff --git a/demos/chat.py b/demos/chat.py new file mode 100644 index 0000000..d955c1f --- /dev/null +++ b/demos/chat.py @@ -0,0 +1,40 @@ +from eca import * +import datetime +import eca.http + +# add message posting handler +def add_request_handlers(httpd): + httpd.add_route('/api/message', eca.http.GenerateEvent('incoming'), methods=['POST']) + + # use the library content from the template_static dir instead of our own + # this is a bit finicky, since execution now depends on a proper working directory. + httpd.add_content('/lib/', 'template_static/lib') + httpd.add_content('/style/', 'template_static/style') + + +# store name of context +@event('init') +def setup(ctx, e): + ctx.name = e.data['name'] + + +# emit incoming messages to the client +@event('message') +def on_message(ctx, e): + name = e.data['name'] + text = e.data['text'] + time = e.data['time'].strftime('%Y-%m-%d %H:%M:%S') + + emit('message',{ + 'text': "{} @{}: {}".format(name, time, text) + }) + + +# do a global fire for each message from the client +@event('incoming') +def on_incoming(ctx, e): + fire_global('message', { + 'name': ctx.name, + 'text': e.data['text'], + 'time': datetime.datetime.now() + }) diff --git a/demos/chat_static/index.html b/demos/chat_static/index.html new file mode 100644 index 0000000..b97a63e --- /dev/null +++ b/demos/chat_static/index.html @@ -0,0 +1,44 @@ + + + +Neca Test + + + + + + + + + +

ECA Chat

+ +
+ +
+
+ + +
+
+ + + + diff --git a/demos/drinks.py b/demos/drinks.py new file mode 100644 index 0000000..3dcc280 --- /dev/null +++ b/demos/drinks.py @@ -0,0 +1,52 @@ +from eca import * +import eca.http + +from pprint import pprint + +# This function will be called to set up the HTTP server +def add_request_handlers(httpd): + # add an event-generating request handler to fire 'order' events + # This requires the POST method because the event generation handler only + # understands POST requests. + httpd.add_route('/api/order', eca.http.GenerateEvent('order'), methods=['POST']) + + # use the library content from the template_static dir instead of our own + # this is a bit finicky, since execution now depends on a proper working directory. + httpd.add_content('/lib/', 'template_static/lib') + httpd.add_content('/style/', 'template_static/style') + + +@event('order') +def order(c, e): + # we received an order... + + # ...go an print it + print("Received a new order:") + pprint(e.data) + + # ...and emit it to all interested browsers + # (conceptually, this could also include the Barista's workstation) + emit('orders',{ + 'text': str(e.data) + }); + + +# Below are some examples of how to handle incoming requests based +# on observed qualities. + +# Inform the coffee machine handler that more coffee is required. +@event('order') +@condition(lambda c,e: e.data['drink'] == 'Coffee') +def start_brewing(c,e): + print("-> Start the coffee brewer!") + + +# Check for a very specific order +@event('order') +@condition(lambda c,e: e.data['drink'] == 'Tea' + and not e.data['additives'] + and e.data['type'].lower() == 'earl grey' + and 'hot' in e.data['notes'].lower()) +def picard_has_arrived(c,e): + print("-> Captain Picard has arrived.") + diff --git a/demos/drinks_static/index.html b/demos/drinks_static/index.html new file mode 100644 index 0000000..534ed2e --- /dev/null +++ b/demos/drinks_static/index.html @@ -0,0 +1,64 @@ + + + +Neca Test + + + + + + + + + +

Hot Drinks Dashboard

+ + +
+ + +
+

Your Order...

+
+ +
+ + + +
+ +
+ Extras: + + +
+ +
+ + +
+ +
+
+ +
+ + +
+
+ + + + diff --git a/demos/rolling_chart.py b/demos/rolling_chart.py new file mode 100644 index 0000000..eb81238 --- /dev/null +++ b/demos/rolling_chart.py @@ -0,0 +1,94 @@ +from eca import * + +import random + +# This function will be called to set up the HTTP server +def add_request_handlers(httpd): + # use the library content from the template_static dir instead of our own + # this is a bit finicky, since execution now depends on a proper working directory. + httpd.add_content('/lib/', 'template_static/lib') + httpd.add_content('/style/', 'template_static/style') + + +# binds the 'setup' function as the action for the 'init' event +# the action will be called with the context and the event +@event('init') +def setup(ctx, e): + ctx.count = 0 + ctx.samples = { + 'sensor0': 0.0, + 'sensor1': 0.0 + } + + fire('sample', { + 'previous': 0.0, + 'name': 'sensor0', + 'failure-chance': 0.0, + 'reboot-chance': 1.0, + 'delay': 0.05 + }) + + fire('sample', { + 'previous': 0.0, + 'name': 'sensor1', + 'failure-chance': 0.05, + 'reboot-chance': 0.1, + 'delay': 0.05 + }) + + fire('sample', { + 'previous': None, + 'name': 'sensor2', + 'failure-chance': 0.2, + 'reboot-chance': 0.8, + 'delay': 0.1 + }) + + fire('tick') + + +# define a normal Python function +def clip(lower, value, upper): + return max(lower, min(value, upper)) + +@event('sample') +@condition(lambda c,e: e.get('previous') is not None) +def generate_sample(ctx, e): + sample = e.get('previous') + # failure chance off... + if e.get('failure-chance') > random.random(): + sample = None + del ctx.samples[e.get('name')] + else: + # base sample on previous one + sample = clip(-100, e.get('previous') + random.uniform(+5.0, -5.0), 100) + ctx.samples[e.get('name')] = sample + + # chain event + data = dict(e.data) + data.update({'previous': sample}) + fire('sample', data, delay=e.get('delay')) + +@event('sample') +@condition(lambda c,e: e.get('previous') is None) +def try_reboot(ctx, e): + sample = e.get('previous') + if e.get('reboot-chance') > random.random(): + sample = random.uniform(100,-100) + ctx.samples[e.get('name')] = sample + + data = dict(e.data) + data.update({'previous': sample}) + fire('sample', data, delay=e.get('delay')) + + +@event('tick') +def tick(ctx, e): + # emit to outside world + emit('sample',{ + 'action': 'add', + 'values': ctx.samples + }) + fire('tick', delay=0.05); + + diff --git a/demos/rolling_chart_static/index.html b/demos/rolling_chart_static/index.html new file mode 100644 index 0000000..c6f92f5 --- /dev/null +++ b/demos/rolling_chart_static/index.html @@ -0,0 +1,65 @@ + + + +Neca Test + + + + + + + + +

Rolling Chart Dashboard

+ +
+
+ + + + diff --git a/demos/shout.js b/demos/shout.js new file mode 100644 index 0000000..77bcb6f --- /dev/null +++ b/demos/shout.js @@ -0,0 +1,52 @@ +/* + * This file is the demo for a block definition. For more information + * see: + * https://github.com/utwente-db/eca/wiki/Extending:-Creating-Your-Own-Blocks + * + */ + +(function($, block) { + +block.fn.shout = function(config) { + // handle configuration + var options = $.extend({ + size: '64pt', + text: 'RED', + color: 'red' + }, config); + + // create HTML representation + var $el = $('').appendTo(this.$element); + $el.css('font-size', options.size); + + // create HTML element for display + var data = { + text: options.text, + color: options.color + } + + // update function to update element + var update = function() { + $el.text(data.text+'!').css('color', data.color); + } + + // invoke update to initialise the display + update(); + + // register actions + this.actions({ + word: function(e, message) { + data.text = message.text; + update(); + }, + color: function(e, message) { + data.color = message.color; + update(); + } + }); + + // return the element for further work + return this.$element; +} + +})(jQuery, block); diff --git a/demos/tweet_arff.py b/demos/tweet_arff.py new file mode 100644 index 0000000..fbfd2a5 --- /dev/null +++ b/demos/tweet_arff.py @@ -0,0 +1,25 @@ +from eca import * +from eca.generators import start_offline_tweets + +import datetime +import textwrap + +@event('init') +def setup(ctx, e): + # start the offline tweet stream + start_offline_tweets('data/batatweets.txt', 'chirp', time_factor=10000, arff_file='data/batatweets.arff') + +@event('chirp') +def tweet(ctx, e): + # we receive a tweet + tweet = e.data + + # parse date + time = datetime.datetime.strptime(tweet['created_at'], '%a %b %d %H:%M:%S %z %Y') + + # nicify text + text = textwrap.fill(tweet['text'],initial_indent=' ', subsequent_indent=' ') + + # generate output + output = "[{}] {} (@{}) +{}:\n{}".format(time, tweet['user']['name'], tweet['user']['screen_name'], tweet['extra']['@@class@@'], text) + emit('tweet', output) diff --git a/demos/tweet_rules.py b/demos/tweet_rules.py new file mode 100644 index 0000000..faef5e0 --- /dev/null +++ b/demos/tweet_rules.py @@ -0,0 +1,25 @@ +from eca import * +from eca.generators import start_offline_tweets + +import datetime +import textwrap + +@event('init') +def setup(ctx, e): + # start the offline tweet stream + start_offline_tweets('data/batatweets.txt', 'chirp', time_factor=10000) + +@event('chirp') +def tweet(ctx, e): + # we receive a tweet + tweet = e.data + + # parse date + time = datetime.datetime.strptime(tweet['created_at'], '%a %b %d %H:%M:%S %z %Y') + + # nicify text + text = textwrap.fill(tweet['text'],initial_indent=' ', subsequent_indent=' ') + + # generate output + output = "[{}] {} (@{}):\n{}".format(time, tweet['user']['name'], tweet['user']['screen_name'], text) + emit('tweet', output) diff --git a/demos/wordcloud.py b/demos/wordcloud.py new file mode 100644 index 0000000..5b59539 --- /dev/null +++ b/demos/wordcloud.py @@ -0,0 +1,53 @@ +from eca import * +from eca.generators import start_offline_tweets + +import datetime +import textwrap +import pprint +import re + +# This function will be called to set up the HTTP server +def add_request_handlers(httpd): + # use the library content from the template_static dir instead of our own + # this is a bit finicky, since execution now depends on a proper working directory. + httpd.add_content('/lib/', 'template_static/lib') + httpd.add_content('/style/', 'template_static/style') + +@event('init') +def setup(ctx, e): + # start the offline tweet stream + start_offline_tweets('data/bata_2014.txt', 'chirp', time_factor=100000) + ctx.words = {} + +# simple word splitter +pattern = re.compile('\W+') + +# sample stopword list, needs to be much more sophisticated +stopwords = ['het', 'een', 'aan', 'zijn', 'http', 'www', 'com', 'ben', 'jij'] + +def words(message): + result = pattern.split(message) + result = map(lambda w: w.lower(), result) + result = filter(lambda w: w not in stopwords, result) + result = filter(lambda w: len(w) > 2, result) + return result + +@event('chirp') +def tweet(ctx, e): + # we receive a tweet + tweet = e.data + + for w in words(tweet['text']): + emit('word', { + 'action': 'add', + 'value': (w, 1) + }) + emit('taart', { + 'action': 'add', + 'value': (str(w[0]), 1) + }) + emit('balk', { + 'action': 'add', + 'value': (str(w[0]), 1) + }) + diff --git a/demos/wordcloud_static/index.html b/demos/wordcloud_static/index.html new file mode 100644 index 0000000..4d04130 --- /dev/null +++ b/demos/wordcloud_static/index.html @@ -0,0 +1,40 @@ + + + +Neca Test + + + + + + + + + + + + + + +

Word Cloud Dashboard

+ +
+
+
+ + + + diff --git a/devjan.py b/devjan.py new file mode 100644 index 0000000..1752fb5 --- /dev/null +++ b/devjan.py @@ -0,0 +1,55 @@ +from eca import * + +import random + +## You might have to update the root path to point to the correct path +## (by default, it points to _static) +# root_content_path = 'template_static' + + +# binds the 'setup' function as the action for the 'init' event +# the action will be called with the context and the event +@event('init') +def setup(ctx, e): + ctx.count = 0 + fire('sample', {'previous': 0.0}) + + +# define a normal Python function +def clip(lower, value, upper): + return max(lower, min(value, upper)) + +@event('sample') +def generate_sample(ctx, e): + ctx.count += 1 + if ctx.count % 50 == 0: + emit('debug', {'text': 'Log message #'+str(ctx.count)+'!'}) + emit('barsample', {'action': 'reset'}) + + # base sample on previous one + + sample = random.uniform(+5.0, -5.0) + + li = int(random.uniform(+5.0,0))+1 + l = 'cat'+str(li) + v = random.uniform(+10.0,0) + + # emit to outside world + # emit('linesample',{ + # 'action': 'add', + # 'series' : 'lineA', + # 'value': [[ctx.count,random.uniform(+10.0,0)]] + # }) + # emit('linesample',{ + # 'action': 'add', + # 'series' : 'lineB', + # 'value': [[ctx.count,random.uniform(+10.0,0)]] + # }) + emit('barsample',{ 'action': 'set', 'series': 'serie'+str(int(random.uniform(1,4))), 'value': [l,v] }) + emit('wordsample',{ + 'action': 'add', + 'value': [l,v] + }) + # chain event + fire('sample', {'previous': sample}, delay=0.05) + diff --git a/devjan_static/index.html b/devjan_static/index.html new file mode 100644 index 0000000..79c052a --- /dev/null +++ b/devjan_static/index.html @@ -0,0 +1,100 @@ + + + +Neca Test + + + + + + + + + + + + + + + + + + + + +

ECA Dashboard Template

+ +
+

This is the dashboard template file. The easiest way to get started is to think up a simple name (let's say we take 'dashboard'). Now copy template.py to {name}.py start a new module (so that's dashboard.py) and copy template_static to {name}_static. +

Now you can run the new project with: 

python neca.py -s {name}.py
+

Further documentation on the ECA system can be found at github.com/utwente-db/eca/wiki, and demos can be found in the demos/ directory. +

+
+

In the sample template.py (which comes with the dashboard you're looking at right now), you will find the rules that power this example. +

Rules are written in Python and work as follows: +

@event("foo")
+def action(context, event):
+    print("Event " + event.name + "!")
+
+The @event part tells the system to fire the action whenever the event 'foo' occurs. The def action(context, event): part defines a new action that takes two arguments: the context and the event. The rest of the code is the action body. +
+ +
+ +
+

The graph to the right is continuously filled with data generated by the rules. +

In template.py you can see that an event called 'sample' is fired again and again to create new data points for the graph. +

These points are then sent to the browser with: +

emit('sample',{
+    'action': 'add',
+    'value': sample
+})
+ +
+ + + +
+ + + +
+ + + + +//
+ + + diff --git a/devjan_static/lib/barcharts.js b/devjan_static/lib/barcharts.js new file mode 100644 index 0000000..76897d8 --- /dev/null +++ b/devjan_static/lib/barcharts.js @@ -0,0 +1,108 @@ +(function($, block) { + +// a simple barchart example +block.fn.barchart = function(config) { + var options = $.extend({ + series : { "serie1":{ + data: {"January": 10, "February": 8, "March": 4, "April": 13, "May": 20, "June": 9}, + label: "serie 1", + bars: { + show: true, + barWidth: 0.2, + align: "left" + } + + }, "serie2":{ + data: {"January": 10, "February": 8, "March": 4, "April": 13, "May": 20, "June": 9}, + label: "series 2", + bars: { + show: true, + barWidth: 0.2, + align: "center" + } + }, "serie3":{ + data: {"January": 10, "February": 8, "March": 4, "April": 13, "May": 20, "June": 9}, + label: "series 3", + bars: { + show: true, + barWidth: 0.2, + align: "right" + } + }} + }, config); + + var bar_init = { + xaxis: { + mode: "categories", + tickLength: 0 + } + } + + var bardata_series = options.series; + + var translate_bar = function() { + var result = []; + for(var k in bardata_series) { + if (bardata_series.hasOwnProperty(k)) { + var newserie = jQuery.extend({}, bardata_series[k]); + var newdata = []; + var data = newserie.data; + for(var l in data) { + if (data.hasOwnProperty(l)) { + newdata.push([l,data[l]]); + } + } + newserie.data = newdata; + result.push(newserie); + } + } + return result; + } + + var plot = $.plot(this.$element, translate_bar(), bar_init); + + var addbar = function(serie_label, category, value) { + var data = bardata_series[serie_label].data; + if (data.hasOwnProperty(category)) + data[category] = (data[category] + value); + else + data[category] = value; + redraw(); + } + + var setbar = function(serie_label, category, value) { + var data = bardata_series[serie_label].data; + data[category] = value; + redraw(); + } + + var redraw = function() { + plot.setData(translate_bar()); + plot.setupGrid(); + plot.draw(); + } + + var reset = function() { + for(var k in bardata_series) { + if (bardata_series.hasOwnProperty(k)) { + bardata_series[k].data = {}; + } + } + } + + this.actions({ + 'set': function(e, message) { + setbar(message.series,message.value[0],message.value[1]); + }, + 'add': function(e, message) { + addbar(message.series,message.value[0],message.value[1]); + }, + 'reset': function(e, message) { + reset(); + } + }); + // return element to allow further work + return this.$element; +} + +})(jQuery, block); diff --git a/devjan_static/lib/blocks.js b/devjan_static/lib/blocks.js new file mode 100644 index 0000000..fa56c74 --- /dev/null +++ b/devjan_static/lib/blocks.js @@ -0,0 +1,68 @@ +/* +** Blocks plugin allows for quick creation of new block types. +*/ +(function($) { + var ConstructionState = function($element) { + this.$element = $element; + + // transfer all block constructors to scope + for(var b in block.fn) { + // prevent overrides + if(!(b in this)) { + // reference block type in this object + this[b] = block.fn[b]; + } + } + }; + + ConstructionState.prototype.actions = function(actions_or_def, def) { + // handle function overloading + if(typeof actions_or_def == 'function') { + def = actions_or_def; + actions = {}; + } else { + actions = actions_or_def; + } + + // default actionless handler + if(typeof def == 'undefined') { + def = function(e, message) { + console.error("Received actionless server event." + + " Did you forget to set an action field?"); + } + } + + // dispatch all incoming server events + this.$element.on('server-event', function(e, message) { + if(!('action' in message)) { + $(this).trigger('_default.server-event', [message]); + } else { + $(this).trigger(message.action+'.server-event', [message]); + } + }); + + // bind all actions + this.$element.on('_default.server-event', def); + + for(var k in actions) { + this.$element.on(k+'.server-event', actions[k]); + } + + } + + block = function(elements) { + // allow passing of selectors, jquery objects and DOM nodes + var $element = $(elements); + + // actual work + if($element.length != 1) { + console.error("Must have one element to create block for." + + " Was given: '",elements,"'"); + return; + } + + return new ConstructionState($element); + } + + block.fn = {}; +})(jQuery); diff --git a/devjan_static/lib/charts.js b/devjan_static/lib/charts.js new file mode 100644 index 0000000..be75398 --- /dev/null +++ b/devjan_static/lib/charts.js @@ -0,0 +1,78 @@ +(function($, block) { + +// a simple rolling chart with memory +block.fn.rolling_chart = function(config) { + var options = $.extend({ + memory: 100, + series: { serie : {label:"serie", color:'black'} } + }, config); + + var handle_data = function(values) { + var result = []; + + for(var i in values) { + result.push([i, values[i]]); + } + return result; + }; + + var xo = { series: { + lines: { show: true }, + points: { + radius: 3, + show: true, + fill: true + } + }}; + + var plot = $.plot(this.$element, [] , {}); + + var reset = function() { + var result = options.series; + for(var k in result) { + if (result.hasOwnProperty(k)) { + result[k].databuffer = []; + } + } + return result; + } + + var plot_series = reset(); + + var add_to_serie = function(skey,value) { + var databuffer = plot_series[skey].databuffer; + if(databuffer.length > options.memory) { + plot_series[skey].databuffer = databuffer.slice(1); + } + databuffer.push(value); + } + + var redraw = function(serie_value) { + var plot_current = []; + var mykeys = Object.keys(plot_series); + for(var mykey in mykeys) { + var skey = mykeys[mykey]; + var serie = plot_series[skey]; + // serie['databuffer'].push(serie_value[skey]); + add_to_serie(skey,serie_value[skey]); + serie['data'] = handle_data(serie['databuffer']); + plot_current.push(serie); + } + plot.setData(plot_current); + plot.setupGrid(); + plot.draw(); + } + + this.actions({ + 'add': function(e, message) { + redraw(message.value); + }, + 'reset': function(e, message) { + plot_series = reset(); + } + }); + // return element to allow further work + return this.$element; +} + +})(jQuery, block); diff --git a/devjan_static/lib/events.js b/devjan_static/lib/events.js new file mode 100644 index 0000000..c28465a --- /dev/null +++ b/devjan_static/lib/events.js @@ -0,0 +1,38 @@ +/* +Event stream handling. + +See https://developer.mozilla.org/en-US/docs/Web/API/EventSource for a more +comprehensive explanation. +*/ + +events = {}; + +(function($, exports) { + var e = new EventSource('/events'); + + exports.connect = function(name, elements) { + // wrap to allow selector, jQuery object and DOM nodes + var $elements = $(elements); + + // add listener that triggers events in DOM + this.listen(name, function(message) { + $elements.trigger('server-event', [message]); + }); + }; + + exports.listen = function(name, callback) { + // add event listener to event stream + e.addEventListener(name, function(m) { + try { + var message = JSON.parse(m.data); + } catch(err) { + console.exception("Received malformed message: ",err); + return; + } + + callback(message); + }); + }; +})(jQuery, events); + + diff --git a/devjan_static/lib/jqcloud-1.0.4.js b/devjan_static/lib/jqcloud-1.0.4.js new file mode 100644 index 0000000..df339cb --- /dev/null +++ b/devjan_static/lib/jqcloud-1.0.4.js @@ -0,0 +1,232 @@ +/*! + * jQCloud Plugin for jQuery + * + * Version 1.0.4 + * + * Copyright 2011, Luca Ongaro + * Licensed under the MIT license. + * + * Date: 2013-05-09 18:54:22 +0200 +*/ + +(function( $ ) { + "use strict"; + $.fn.jQCloud = function(word_array, options) { + // Reference to the container element + var $this = this; + // Namespace word ids to avoid collisions between multiple clouds + var cloud_namespace = $this.attr('id') || Math.floor((Math.random()*1000000)).toString(36); + + // Default options value + var default_options = { + width: $this.width(), + height: $this.height(), + center: { + x: ((options && options.width) ? options.width : $this.width()) / 2.0, + y: ((options && options.height) ? options.height : $this.height()) / 2.0 + }, + delayedMode: word_array.length > 50, + shape: false, // It defaults to elliptic shape + encodeURI: true, + removeOverflowing: true + }; + + options = $.extend(default_options, options || {}); + + // Add the "jqcloud" class to the container for easy CSS styling, set container width/height + $this.addClass("jqcloud").width(options.width).height(options.height); + + // Container's CSS position cannot be 'static' + if ($this.css("position") === "static") { + $this.css("position", "relative"); + } + + var drawWordCloud = function() { + // Helper function to test if an element overlaps others + var hitTest = function(elem, other_elems) { + // Pairwise overlap detection + var overlapping = function(a, b) { + if (Math.abs(2.0*a.offsetLeft + a.offsetWidth - 2.0*b.offsetLeft - b.offsetWidth) < a.offsetWidth + b.offsetWidth) { + if (Math.abs(2.0*a.offsetTop + a.offsetHeight - 2.0*b.offsetTop - b.offsetHeight) < a.offsetHeight + b.offsetHeight) { + return true; + } + } + return false; + }; + var i = 0; + // Check elements for overlap one by one, stop and return false as soon as an overlap is found + for(i = 0; i < other_elems.length; i++) { + if (overlapping(elem, other_elems[i])) { + return true; + } + } + return false; + }; + + // Make sure every weight is a number before sorting + for (var i = 0; i < word_array.length; i++) { + word_array[i].weight = parseFloat(word_array[i].weight, 10); + } + + // Sort word_array from the word with the highest weight to the one with the lowest + word_array.sort(function(a, b) { if (a.weight < b.weight) {return 1;} else if (a.weight > b.weight) {return -1;} else {return 0;} }); + + var step = (options.shape === "rectangular") ? 18.0 : 2.0, + already_placed_words = [], + aspect_ratio = options.width / options.height; + + // Function to draw a word, by moving it in spiral until it finds a suitable empty place. This will be iterated on each word. + var drawOneWord = function(index, word) { + // Define the ID attribute of the span that will wrap the word, and the associated jQuery selector string + var word_id = cloud_namespace + "_word_" + index, + word_selector = "#" + word_id, + angle = 6.28 * Math.random(), + radius = 0.0, + + // Only used if option.shape == 'rectangular' + steps_in_direction = 0.0, + quarter_turns = 0.0, + + weight = 5, + custom_class = "", + inner_html = "", + word_span; + + // Extend word html options with defaults + word.html = $.extend(word.html, {id: word_id}); + + // If custom class was specified, put them into a variable and remove it from html attrs, to avoid overwriting classes set by jQCloud + if (word.html && word.html["class"]) { + custom_class = word.html["class"]; + delete word.html["class"]; + } + + // Check if min(weight) > max(weight) otherwise use default + if (word_array[0].weight > word_array[word_array.length - 1].weight) { + // Linearly map the original weight to a discrete scale from 1 to 10 + weight = Math.round((word.weight - word_array[word_array.length - 1].weight) / + (word_array[0].weight - word_array[word_array.length - 1].weight) * 9.0) + 1; + } + word_span = $('').attr(word.html).addClass('w' + weight + " " + custom_class); + + // Append link if word.url attribute was set + if (word.link) { + // If link is a string, then use it as the link href + if (typeof word.link === "string") { + word.link = {href: word.link}; + } + + // Extend link html options with defaults + if ( options.encodeURI ) { + word.link = $.extend(word.link, { href: encodeURI(word.link.href).replace(/'/g, "%27") }); + } + + inner_html = $('').attr(word.link).text(word.text); + } else { + inner_html = word.text; + } + word_span.append(inner_html); + + // Bind handlers to words + if (!!word.handlers) { + for (var prop in word.handlers) { + if (word.handlers.hasOwnProperty(prop) && typeof word.handlers[prop] === 'function') { + $(word_span).bind(prop, word.handlers[prop]); + } + } + } + + $this.append(word_span); + + var width = word_span.width(), + height = word_span.height(), + left = options.center.x - width / 2.0, + top = options.center.y - height / 2.0; + + // Save a reference to the style property, for better performance + var word_style = word_span[0].style; + word_style.position = "absolute"; + word_style.left = left + "px"; + word_style.top = top + "px"; + + while(hitTest(word_span[0], already_placed_words)) { + // option shape is 'rectangular' so move the word in a rectangular spiral + if (options.shape === "rectangular") { + steps_in_direction++; + if (steps_in_direction * step > (1 + Math.floor(quarter_turns / 2.0)) * step * ((quarter_turns % 4 % 2) === 0 ? 1 : aspect_ratio)) { + steps_in_direction = 0.0; + quarter_turns++; + } + switch(quarter_turns % 4) { + case 1: + left += step * aspect_ratio + Math.random() * 2.0; + break; + case 2: + top -= step + Math.random() * 2.0; + break; + case 3: + left -= step * aspect_ratio + Math.random() * 2.0; + break; + case 0: + top += step + Math.random() * 2.0; + break; + } + } else { // Default settings: elliptic spiral shape + radius += step; + angle += (index % 2 === 0 ? 1 : -1)*step; + + left = options.center.x - (width / 2.0) + (radius*Math.cos(angle)) * aspect_ratio; + top = options.center.y + radius*Math.sin(angle) - (height / 2.0); + } + word_style.left = left + "px"; + word_style.top = top + "px"; + } + + // Don't render word if part of it would be outside the container + if (options.removeOverflowing && (left < 0 || top < 0 || (left + width) > options.width || (top + height) > options.height)) { + word_span.remove() + return; + } + + + already_placed_words.push(word_span[0]); + + // Invoke callback if existing + if ($.isFunction(word.afterWordRender)) { + word.afterWordRender.call(word_span); + } + }; + + var drawOneWordDelayed = function(index) { + index = index || 0; + if (!$this.is(':visible')) { // if not visible then do not attempt to draw + setTimeout(function(){drawOneWordDelayed(index);},10); + return; + } + if (index < word_array.length) { + drawOneWord(index, word_array[index]); + setTimeout(function(){drawOneWordDelayed(index + 1);}, 10); + } else { + if ($.isFunction(options.afterCloudRender)) { + options.afterCloudRender.call($this); + } + } + }; + + // Iterate drawOneWord on every word. The way the iteration is done depends on the drawing mode (delayedMode is true or false) + if (options.delayedMode){ + drawOneWordDelayed(); + } + else { + $.each(word_array, drawOneWord); + if ($.isFunction(options.afterCloudRender)) { + options.afterCloudRender.call($this); + } + } + }; + + // Delay execution so that the browser can render the page before the computatively intensive word cloud drawing + setTimeout(function(){drawWordCloud();}, 10); + return $this; + }; +})(jQuery); diff --git a/devjan_static/lib/jqcloud.css b/devjan_static/lib/jqcloud.css new file mode 100644 index 0000000..74c976a --- /dev/null +++ b/devjan_static/lib/jqcloud.css @@ -0,0 +1,49 @@ +/* fonts */ + +div.jqcloud { + font-family: "Helvetica", "Arial", sans-serif; + font-size: 10px; + line-height: normal; +} + +div.jqcloud a { + font-size: inherit; + text-decoration: none; +} + +div.jqcloud span.w10 { font-size: 550%; } +div.jqcloud span.w9 { font-size: 500%; } +div.jqcloud span.w8 { font-size: 450%; } +div.jqcloud span.w7 { font-size: 400%; } +div.jqcloud span.w6 { font-size: 350%; } +div.jqcloud span.w5 { font-size: 300%; } +div.jqcloud span.w4 { font-size: 250%; } +div.jqcloud span.w3 { font-size: 200%; } +div.jqcloud span.w2 { font-size: 150%; } +div.jqcloud span.w1 { font-size: 100%; } + +/* colors */ + +div.jqcloud { color: #09f; } +div.jqcloud a { color: inherit; } +div.jqcloud a:hover { color: #0df; } +div.jqcloud a:hover { color: #0cf; } +div.jqcloud span.w10 { color: #0cf; } +div.jqcloud span.w9 { color: #0cf; } +div.jqcloud span.w8 { color: #0cf; } +div.jqcloud span.w7 { color: #39d; } +div.jqcloud span.w6 { color: #90c5f0; } +div.jqcloud span.w5 { color: #90a0dd; } +div.jqcloud span.w4 { color: #90c5f0; } +div.jqcloud span.w3 { color: #a0ddff; } +div.jqcloud span.w2 { color: #99ccee; } +div.jqcloud span.w1 { color: #aab5f0; } + +/* layout */ + +div.jqcloud { + overflow: hidden; + position: relative; +} + +div.jqcloud span { padding: 0; } diff --git 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