tools/deep_memory_profiler/visualizer/app.py

   1 # Copyright 2013 The Chromium Authors. All rights reserved.
   2 # Use of this source code is governed by a BSD-style license that can be
   3 # found in the LICENSE file.
   4
   5 # This file is expected to be used under another directory to use,
   6 # so we disable checking import path of GAE tools from this directory.
   7 # pylint: disable=F0401,E0611,W0232
   8
   9 import jinja2
  10 import json
  11 import os
  12 import re
  13 import urllib
  14 import webapp2
  15
  16 from google.appengine.ext import blobstore
  17 from google.appengine.ext.webapp import blobstore_handlers
  18
  19 import services
  20
  21
  22 JINJA_ENVIRONMENT = jinja2.Environment(
  23   loader=jinja2.FileSystemLoader(os.path.dirname(__file__)),
  24   extensions=['jinja2.ext.autoescape'])
  25
  26
  27 class MainPage(webapp2.RequestHandler):
  28   """Show breakdown with received profiler-id and template-id. If nothing was
  29   received, show blank page waiting user to upload file."""
  30   def get(self):
  31     page_template = JINJA_ENVIRONMENT.get_template('index.html')
  32     upload_url = blobstore.create_upload_url('/upload')
  33
  34     # Get profiler id and template id from url query.
  35     run_id = self.request.get('run_id')
  36     tmpl_id = self.request.get('tmpl_id')
  37     upload_msg = self.request.get('upload_msg')
  38
  39     template_values = {
  40       'upload_url': upload_url,
  41       'upload_msg': upload_msg
  42     }
  43
  44     if run_id and tmpl_id:
  45       template_values['json'] = services.GetProfiler(run_id)
  46       template_values['template'] = services.GetTemplate(tmpl_id)
  47
  48     self.response.write(page_template.render(template_values))
  49
  50
  51 class UploadHandler(blobstore_handlers.BlobstoreUploadHandler):
  52   """Handle file uploading with BlobstoreUploadHandler. BlobstoreUploadHandler
  53   can deal with files overweighing size limitation within one HTTP connection so
  54   that user can upload large json file."""
  55   def post(self):
  56     blob_info = self.get_uploads('file')[0]
  57
  58     run_id = services.CreateProfiler(blob_info)
  59     default_key = services.CreateTemplates(blob_info)
  60
  61     # TODO(junjianx): Validation of uploaded file should be done separately.
  62     if not default_key:
  63       # Jump to home page with error message.
  64       req_params = {
  65         'upload_msg': 'No default_template key was found.'
  66       }
  67     else:
  68       # Jump to new graph page using default template.
  69       req_params = {
  70         'run_id': run_id,
  71         'tmpl_id': default_key.urlsafe()
  72       }
  73
  74     self.redirect('/?' + urllib.urlencode(req_params))
  75
  76
  77 class ShareHandler(webapp2.RequestHandler):
  78   """Handle breakdown template sharing. Generate public url for transferred
  79   template and return it back."""
  80   def post(self):
  81     run_id = self.request.POST['run_id']
  82     content = json.loads(self.request.POST['content'])
  83     tmpl_key = services.CreateTemplate(content)
  84
  85     req_params = {
  86       'run_id': run_id,
  87       'tmpl_id': tmpl_key.urlsafe()
  88     }
  89
  90     # Take out host url from request by removing share suffix.
  91     url = re.sub('share', '', self.request.url)
  92     self.response.write(url + '?' + urllib.urlencode(req_params))
  93
  94
  95 application = webapp2.WSGIApplication([
  96   ('/', MainPage),
  97   ('/upload', UploadHandler),
  98   ('/share', ShareHandler)
  99 ], debug=True)