root / poller / views.py @ d60db93b
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1 | 3e99e2d1 | Leonidas Poulopoulos | from gevent import monkey |
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2 | 3e99e2d1 | Leonidas Poulopoulos | monkey.patch_all() |
3 | 3e99e2d1 | Leonidas Poulopoulos | from gevent.pool import Pool |
4 | 25d08a62 | Leonidas Poulopoulos | import json |
5 | 3e99e2d1 | Leonidas Poulopoulos | |
6 | 3e99e2d1 | Leonidas Poulopoulos | import uuid |
7 | 3e99e2d1 | Leonidas Poulopoulos | import datetime |
8 | 3e99e2d1 | Leonidas Poulopoulos | from django.shortcuts import render_to_response |
9 | 3e99e2d1 | Leonidas Poulopoulos | from django.template.loader import render_to_string |
10 | 3e99e2d1 | Leonidas Poulopoulos | from django.http import HttpResponse |
11 | 3e99e2d1 | Leonidas Poulopoulos | from gevent.event import Event |
12 | 3e99e2d1 | Leonidas Poulopoulos | from django.conf import settings |
13 | 94fb8123 | Leonidas Poulopoulos | #from django.views.decorators.csrf import csrf_exempt
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14 | 97e42c7d | Leonidas Poulopoulos | from django.http import HttpResponseRedirect |
15 | 97e42c7d | Leonidas Poulopoulos | from django.core.urlresolvers import reverse |
16 | 97e42c7d | Leonidas Poulopoulos | |
17 | 3e99e2d1 | Leonidas Poulopoulos | |
18 | f57f6e68 | Leonidas Poulopoulos | import beanstalkc |
19 | 3e99e2d1 | Leonidas Poulopoulos | |
20 | 3e99e2d1 | Leonidas Poulopoulos | import logging |
21 | 3e99e2d1 | Leonidas Poulopoulos | |
22 | 3e99e2d1 | Leonidas Poulopoulos | FORMAT = '%(asctime)s %(levelname)s: %(message)s'
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23 | 3e99e2d1 | Leonidas Poulopoulos | logging.basicConfig(format=FORMAT) |
24 | 3e99e2d1 | Leonidas Poulopoulos | logger = logging.getLogger(__name__) |
25 | 3e99e2d1 | Leonidas Poulopoulos | logger.setLevel(logging.DEBUG) |
26 | 3e99e2d1 | Leonidas Poulopoulos | |
27 | 3e99e2d1 | Leonidas Poulopoulos | |
28 | 25d08a62 | Leonidas Poulopoulos | def create_message(body, user): |
29 | 25d08a62 | Leonidas Poulopoulos | data = {'id': str(uuid.uuid4()), 'body': body, 'user':user} |
30 | 3e99e2d1 | Leonidas Poulopoulos | data['html'] = render_to_string('poll_message.html', dictionary={'message': data}) |
31 | 3e99e2d1 | Leonidas Poulopoulos | return data
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32 | 3e99e2d1 | Leonidas Poulopoulos | |
33 | 3e99e2d1 | Leonidas Poulopoulos | |
34 | 3e99e2d1 | Leonidas Poulopoulos | def json_response(value, **kwargs): |
35 | 3e99e2d1 | Leonidas Poulopoulos | kwargs.setdefault('content_type', 'text/javascript; charset=UTF-8') |
36 | c00eba1c | Leonidas Poulopoulos | return HttpResponse(json.dumps(value), **kwargs)
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37 | 3e99e2d1 | Leonidas Poulopoulos | |
38 | 3e99e2d1 | Leonidas Poulopoulos | class Msgs(object): |
39 | 94fb8123 | Leonidas Poulopoulos | cache_size = 500
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40 | 3e99e2d1 | Leonidas Poulopoulos | |
41 | 3e99e2d1 | Leonidas Poulopoulos | def __init__(self): |
42 | bec1a51b | Leonidas Poulopoulos | logger.info("initializing")
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43 | 97e42c7d | Leonidas Poulopoulos | self.user = None |
44 | 25d08a62 | Leonidas Poulopoulos | self.user_cache = {}
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45 | 25d08a62 | Leonidas Poulopoulos | self.user_cursor = {}
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46 | 3e99e2d1 | Leonidas Poulopoulos | self.cache = []
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47 | 25d08a62 | Leonidas Poulopoulos | self.new_message_event = None |
48 | 25d08a62 | Leonidas Poulopoulos | self.new_message_user_event = {}
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49 | 3e99e2d1 | Leonidas Poulopoulos | |
50 | 3e99e2d1 | Leonidas Poulopoulos | def main(self, request): |
51 | 25d08a62 | Leonidas Poulopoulos | if self.user_cache: |
52 | 25d08a62 | Leonidas Poulopoulos | request.session['cursor'] = self.user_cache[-1]['id'] |
53 | 25d08a62 | Leonidas Poulopoulos | return render_to_response('poll.html', {'messages': self.user_cache}) |
54 | 97e42c7d | Leonidas Poulopoulos | |
55 | 3e99e2d1 | Leonidas Poulopoulos | def message_existing(self, request): |
56 | 97e42c7d | Leonidas Poulopoulos | if request.is_ajax():
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57 | 97e42c7d | Leonidas Poulopoulos | try:
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58 | 97e42c7d | Leonidas Poulopoulos | user = request.user.get_profile().peer.domain_name |
59 | 97e42c7d | Leonidas Poulopoulos | except:
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60 | 97e42c7d | Leonidas Poulopoulos | user = None
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61 | 97e42c7d | Leonidas Poulopoulos | return False |
62 | 97e42c7d | Leonidas Poulopoulos | try:
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63 | 97e42c7d | Leonidas Poulopoulos | assert(self.new_message_user_event[user]) |
64 | 97e42c7d | Leonidas Poulopoulos | except:
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65 | 97e42c7d | Leonidas Poulopoulos | self.new_message_user_event[user] = Event()
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66 | 97e42c7d | Leonidas Poulopoulos | try:
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67 | 97e42c7d | Leonidas Poulopoulos | if self.user_cache[user]: |
68 | 97e42c7d | Leonidas Poulopoulos | self.user_cursor[user] = self.user_cache[user][-1]['id'] |
69 | 97e42c7d | Leonidas Poulopoulos | except:
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70 | 97e42c7d | Leonidas Poulopoulos | self.user_cache[user] = []
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71 | 97e42c7d | Leonidas Poulopoulos | self.user_cursor[user] = '' |
72 | 97e42c7d | Leonidas Poulopoulos | return json_response({'messages': self.user_cache[user]}) |
73 | 94fb8123 | Leonidas Poulopoulos | return HttpResponseRedirect(reverse('group-routes')) |
74 | 3e99e2d1 | Leonidas Poulopoulos | |
75 | 25d08a62 | Leonidas Poulopoulos | def message_new(self, mesg=None): |
76 | 3e99e2d1 | Leonidas Poulopoulos | if mesg:
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77 | 25d08a62 | Leonidas Poulopoulos | message = mesg['message']
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78 | 25d08a62 | Leonidas Poulopoulos | user = mesg['username']
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79 | 3e99e2d1 | Leonidas Poulopoulos | now = datetime.datetime.now() |
80 | 25d08a62 | Leonidas Poulopoulos | msg = create_message("[%s]: %s"%(now.strftime("%Y-%m-%d %H:%M:%S"),message), user) |
81 | 25d08a62 | Leonidas Poulopoulos | try:
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82 | 25d08a62 | Leonidas Poulopoulos | isinstance(self.user_cache[user], list) |
83 | 25d08a62 | Leonidas Poulopoulos | except:
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84 | 25d08a62 | Leonidas Poulopoulos | self.user_cache[user] = []
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85 | 25d08a62 | Leonidas Poulopoulos | self.user_cache[user].append(msg)
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86 | 25d08a62 | Leonidas Poulopoulos | if self.user_cache[user][-1] == self.user_cache[user][0]: |
87 | 25d08a62 | Leonidas Poulopoulos | self.user_cursor[user] = self.user_cache[user][-1]['id'] |
88 | 25d08a62 | Leonidas Poulopoulos | else:
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89 | 25d08a62 | Leonidas Poulopoulos | self.user_cursor[user] = self.user_cache[user][-2]['id'] |
90 | 25d08a62 | Leonidas Poulopoulos | if len(self.user_cache[user]) > self.cache_size: |
91 | 25d08a62 | Leonidas Poulopoulos | self.user_cache[user] = self.user_cache[user][-self.cache_size:] |
92 | 25d08a62 | Leonidas Poulopoulos | self.new_message_user_event[user].set()
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93 | 25d08a62 | Leonidas Poulopoulos | self.new_message_user_event[user].clear()
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94 | 3e99e2d1 | Leonidas Poulopoulos | return json_response(msg)
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95 | 3e99e2d1 | Leonidas Poulopoulos | |
96 | 3e99e2d1 | Leonidas Poulopoulos | def message_updates(self, request): |
97 | 97e42c7d | Leonidas Poulopoulos | if request.is_ajax():
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98 | 97e42c7d | Leonidas Poulopoulos | cursor = {} |
99 | 97e42c7d | Leonidas Poulopoulos | try:
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100 | 97e42c7d | Leonidas Poulopoulos | user = request.user.get_profile().peer.domain_name |
101 | 97e42c7d | Leonidas Poulopoulos | except:
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102 | 97e42c7d | Leonidas Poulopoulos | user = None
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103 | 97e42c7d | Leonidas Poulopoulos | return False |
104 | a61c1448 | Leonidas Poulopoulos | try:
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105 | a61c1448 | Leonidas Poulopoulos | cursor[user] = self.user_cursor[user]
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106 | a61c1448 | Leonidas Poulopoulos | except:
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107 | a61c1448 | Leonidas Poulopoulos | return HttpResponse(content='', mimetype=None, status=400) |
108 | 97e42c7d | Leonidas Poulopoulos | |
109 | 97e42c7d | Leonidas Poulopoulos | try:
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110 | 97e42c7d | Leonidas Poulopoulos | if not isinstance(self.user_cache[user], list): |
111 | 97e42c7d | Leonidas Poulopoulos | self.user_cache[user] = []
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112 | 97e42c7d | Leonidas Poulopoulos | except:
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113 | 25d08a62 | Leonidas Poulopoulos | self.user_cache[user] = []
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114 | 97e42c7d | Leonidas Poulopoulos | if not self.user_cache[user] or cursor[user] == self.user_cache[user][-1]['id']: |
115 | bec1a51b | Leonidas Poulopoulos | self.new_message_user_event[user].wait(settings.POLL_SESSION_UPDATE)
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116 | 97e42c7d | Leonidas Poulopoulos | try:
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117 | 97e42c7d | Leonidas Poulopoulos | for index, m in enumerate(self.user_cache[user]): |
118 | 97e42c7d | Leonidas Poulopoulos | if m['id'] == cursor[user]: |
119 | 97e42c7d | Leonidas Poulopoulos | return json_response({'messages': self.user_cache[user][index + 1:]}) |
120 | 97e42c7d | Leonidas Poulopoulos | return json_response({'messages': self.user_cache[user]}) |
121 | 97e42c7d | Leonidas Poulopoulos | finally:
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122 | 97e42c7d | Leonidas Poulopoulos | if self.user_cache[user]: |
123 | 97e42c7d | Leonidas Poulopoulos | self.user_cursor[user] = self.user_cache[user][-1]['id'] |
124 | 94fb8123 | Leonidas Poulopoulos | return HttpResponseRedirect(reverse('group-routes')) |
125 | 3e99e2d1 | Leonidas Poulopoulos | |
126 | 3e99e2d1 | Leonidas Poulopoulos | def monitor_polls(self, polls=None): |
127 | 3e99e2d1 | Leonidas Poulopoulos | b = beanstalkc.Connection() |
128 | 3e99e2d1 | Leonidas Poulopoulos | b.watch(settings.POLLS_TUBE) |
129 | 3e99e2d1 | Leonidas Poulopoulos | while True: |
130 | 3e99e2d1 | Leonidas Poulopoulos | job = b.reserve() |
131 | 25d08a62 | Leonidas Poulopoulos | msg = json.loads(job.body) |
132 | 3e99e2d1 | Leonidas Poulopoulos | job.bury() |
133 | 25d08a62 | Leonidas Poulopoulos | self.message_new(msg)
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134 | 3e99e2d1 | Leonidas Poulopoulos | |
135 | 3e99e2d1 | Leonidas Poulopoulos | |
136 | 3e99e2d1 | Leonidas Poulopoulos | def start_polling(self): |
137 | 3e99e2d1 | Leonidas Poulopoulos | logger.info("Start Polling")
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138 | 3e99e2d1 | Leonidas Poulopoulos | p = Pool(10)
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139 | 3e99e2d1 | Leonidas Poulopoulos | while True: |
140 | 3e99e2d1 | Leonidas Poulopoulos | p.spawn(self.monitor_polls)
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141 | 3e99e2d1 | Leonidas Poulopoulos | |
142 | 3e99e2d1 | Leonidas Poulopoulos | msgs = Msgs() |
143 | 3e99e2d1 | Leonidas Poulopoulos | main = msgs.main |
144 | 3e99e2d1 | Leonidas Poulopoulos | |
145 | 3e99e2d1 | Leonidas Poulopoulos | message_new = msgs.message_new |
146 | 3e99e2d1 | Leonidas Poulopoulos | message_updates = msgs.message_updates |
147 | 3e99e2d1 | Leonidas Poulopoulos | message_existing = msgs.message_existing |
148 | 3e99e2d1 | Leonidas Poulopoulos | |
149 | 3e99e2d1 | Leonidas Poulopoulos | poll = msgs.start_polling |
150 | 3e99e2d1 | Leonidas Poulopoulos | poll() |