Mercurial > caja-test

annotate pavement.py @ 4:cf673c093b61 default tip

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paver runserver now shows errors if cajoling failed.
author Atul Varma <varmaa@toolness.com>
date Sun, 07 Jun 2009 20:44:44 -0700
parents 6737bc744b46
children
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1 import md5
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2 import os
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3 import subprocess
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4 import wsgiref
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5 import wsgiref.simple_server
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6 from paver.easy import *
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7
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8 DEFAULT_PORT = 8080
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9 DEFAULT_HOST = '127.0.0.1'
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10
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11 class CajolerWebApp(object):
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12 def __init__(self, cajoler_path):
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13 self.cajoler_path = cajoler_path
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14 self.cache = {}
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15
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16 def cajole(self, filename):
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17 contents = open(filename).read()
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18 hash = md5.md5(contents).hexdigest()
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19 if hash not in self.cache:
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20 # TODO: This isn't threadsafe.
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21 # TODO: There's no way to evict entries from the cache.
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22 cajoled_filename = "output.co.js"
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23 output_filename = "output.txt"
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24 popen = subprocess.Popen([self.cajoler_path,
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25 "-i", filename,
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26 "-o", cajoled_filename],
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27 stdout=open(output_filename, 'w'),
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28 stderr=subprocess.STDOUT)
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29 popen.wait()
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30 if popen.returncode == 0:
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31 content = open(cajoled_filename).read()
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32 self.cache[hash] = Bunch(success = True,
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33 content = content)
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34 os.remove(cajoled_filename)
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35 else:
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36 output = open(output_filename).read()
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37 self.cache[hash] = Bunch(success = False,
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38 content = output)
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39 os.remove(output_filename)
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40 return self.cache[hash]
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41
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42 def app(self, env, start_response):
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43 path = env['PATH_INFO']
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44 parts = path.split('/')[1:]
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45 if len(parts) == 1:
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46 filename = os.path.join('caja-js', parts[0])
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47 if os.path.exists(filename) and not os.path.isdir(filename):
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48 result = self.cajole(filename)
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49 if not result.success:
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50 start_response('500 Internal Server Error',
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51 [('Content-type', 'text/plain')])
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52 return ["Cajoling failed:\n\n%s" % result.content]
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53 start_response('200 OK',
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54 [('Content-type', 'text/javascript')])
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55 return [result.content]
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56 start_response('404 Not Found',
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57 [('Content-type', 'text/plain')])
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58 return ['Not found: %s' % path]
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59
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60 @task
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61 @cmdopts((['port=', 'p', 'port to bind to'],
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62 ['host=', 'o', 'host to bind to'],
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63 ['cajoler-path=', 'c', 'path to cajole_html']))
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64 def runserver(options):
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65 port = int(options.get('port', DEFAULT_PORT))
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66 host = options.get('host', DEFAULT_HOST)
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67 if not options.get('cajoler_path'):
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68 raise Exception('Required option: --cajoler-path.')
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69 print "Running server at %s port %d, press Ctrl-C to stop." % (host,
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70 port)
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71 app = CajolerWebApp(options.cajoler_path)
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72 server = wsgiref.simple_server.make_server(host, port, app.app)
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73 server.serve_forever()