annotate web/templog.py @ 253:0a1b642e3086

long polling config updates
author Matt Johnston <matt@ucc.asn.au>
date Mon, 08 Jun 2015 22:29:46 +0800
parents 141948a400a6
children 8ef52f27cf95
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1 #!/usr/bin/env python2.7
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2
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3 import binascii
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4 import json
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5 import hmac
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6 import zlib
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7 from datetime import datetime, timedelta
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8 import time
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9 import urllib
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10 import sys
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11 import os
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12 import traceback
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13 import fcntl
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14 import hashlib
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15
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16 import bottle
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17 from bottle import route, request, response
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19 import config
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20 import log
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21 import secure
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22 import atomicfile
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23
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24 DATE_FORMAT = '%Y%m%d-%H.%M'
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25 ZOOM_SCALE = 2.0
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27 class TemplogBottle(bottle.Bottle):
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28 def run(*args, **argm):
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29 argm['server'] = 'gevent'
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30 super(TemplogBottle, self).run(*args, **argm)
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32 bottle.default_app.push(TemplogBottle())
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33
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34 secure.setup_csrf()
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36 @route('/update', method='post')
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37 def update():
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38 js_enc = request.forms.data
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39 mac = request.forms.hmac
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40
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41 h = hmac.new(config.HMAC_KEY, js_enc.strip(), hashlib.sha256).hexdigest()
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42 if h != mac:
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43 raise bottle.HTTPError(code = 403, output = "Bad key")
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44
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45 js = zlib.decompress(binascii.a2b_base64(js_enc))
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47 params = json.loads(js)
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49 log.parse(params)
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50
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51 return "OK"
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53 def make_graph(length, end):
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54 length_minutes = int(length)
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55 end = datetime.strptime(end, DATE_FORMAT)
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56 start = end - timedelta(minutes=length_minutes)
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57
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58 start_epoch = time.mktime(start.timetuple())
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59 return log.graph_png(start_epoch, length_minutes * 60)
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60
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61 def encode_data(data, mimetype):
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62 return 'data:%s;base64,%s' % (mimetype, binascii.b2a_base64(data).rstrip())
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64 @route('/graph.png')
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65 def graph():
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66 response.set_header('Content-Type', 'image/png')
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67 minutes, endstr = get_request_zoom()
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68 return make_graph(minutes, endstr)
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70 @route('/set/update', method='post')
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71 def set_update():
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72 post_json = json.loads(request.forms.data)
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73
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74 csrf_blob = post_json['csrf_blob']
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75
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76 if not secure.check_csrf_blob(csrf_blob):
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77 response.status = 403
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78 return "Bad csrf"
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79
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80 ret = log.update_params(post_json['params'])
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81 if not ret is True:
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82 response.status = 403
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83 return ret
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84
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85 return "Good"
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86
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87 @route('/set')
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88 def set():
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89 allowed = ["false", "true"][secure.check_user_hash(config.ALLOWED_USERS)]
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90 response.set_header('Cache-Control', 'no-cache')
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91 return bottle.template('set',
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92 inline_data = log.get_params(),
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93 csrf_blob = secure.get_csrf_blob(),
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94 allowed = allowed)
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95
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96 def get_request_zoom():
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97 """ returns (length, end) tuple.
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98 length is in minutes, end is a DATE_FORMAT string """
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99 minutes = int(request.query.get('length', 26*60))
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100
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101 if 'end' in request.query:
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102 end = datetime.strptime(request.query.end, DATE_FORMAT)
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103 else:
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104 end = datetime.now()
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105
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106 if 'zoom' in request.query:
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107 orig_start = end - timedelta(minutes=minutes)
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108 orig_end = end
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109 scale = float(request.query.scaledwidth) / config.GRAPH_WIDTH
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110 xpos = int(request.query.x) / scale
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111 xpos -= config.GRAPH_LEFT_MARGIN * config.ZOOM
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112
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113 if xpos >= 0 and xpos < config.GRAPH_WIDTH * config.ZOOM:
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114 click_time = orig_start \
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115 + timedelta(minutes=(float(xpos) / (config.GRAPH_WIDTH * config.ZOOM)) * minutes)
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116 minutes = int(minutes / ZOOM_SCALE)
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117
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118 end = click_time + timedelta(minutes=minutes/2)
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119 else:
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120 # zoom out
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121 minutes = int(minutes*ZOOM_SCALE)
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122 end += timedelta(minutes=minutes/2)
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123
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124 if end > datetime.now():
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125 end = datetime.now()
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126
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127 endstr = end.strftime(DATE_FORMAT)
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128 return (minutes, endstr)
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129
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130 @route('/')
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131 def top():
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132 minutes, endstr = get_request_zoom()
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133
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134 request.query.replace('length', minutes)
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135 request.query.replace('end', endstr)
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136
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137 urlparams = urllib.urlencode(request.query)
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138 graphdata = encode_data(make_graph(minutes, endstr), 'image/png')
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139 return bottle.template('top', urlparams=urlparams,
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140 end = endstr,
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141 length = minutes,
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142 graphwidth = config.GRAPH_WIDTH,
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143 graphdata = graphdata)
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144
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145 @route('/debug')
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146 def debuglog():
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147 response.set_header('Content-Type', 'text/plain')
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148 return log.tail_debug_log()
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149
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150 @route('/env')
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151 def env():
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152 response.set_header('Content-Type', 'text/plain')
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153 #return '\n'.join(traceback.format_stack())
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154 return '\n'.join(("%s %s" % k) for k in request.environ.items())
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155 #return str(request.environ)
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156 #yield "\n"
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157 #var_lookup = environ['mod_ssl.var_lookup']
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158 #return var_lookup("SSL_SERVER_I_DN_O")
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159
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160 @route('/get_settings')
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161 def get_settings():
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162 response.set_header('Cache-Control', 'no-cache')
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163 req_etag = request.headers.get('etag', None)
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164 if req_etag:
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165 # wait for it to change
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166 if not log.fridge_settings.wait(req_etag, timeout=LONG_POLL_TIMEOUT):
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167 response.status = 304
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168 return "Nothing happened"
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169
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170 response.set_header('Content-Type', 'application/json')
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171 contents, epoch_tag = client_settings.get()
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172 return json.dumps({'params': contents, 'epoch_tag': epoch_tag})
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173
182
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174 @bottle.get('/<filename:re:.*\.js>')
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175 def javascripts(filename):
185
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176 response.set_header('Cache-Control', "public, max-age=1296000")
182
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177 return bottle.static_file(filename, root='static')
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178
253
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179
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180 def main():
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181 #bottle.debug(True)
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182 #bottle.run(reloader=True)
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183 bottle.run(server='cgi', reloader=True)
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184 #bottle.run(port=9999, reloader=True)
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185
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186 if __name__ == '__main__':
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187 main()
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188