1 # Copyright (C) 2010 Google Inc. All rights reserved.

     2 #

     3 # Redistribution and use in source and binary forms, with or without

     4 # modification, are permitted provided that the following conditions are

     5 # met:

     6 # 

     7 #     * Redistributions of source code must retain the above copyright

     8 # notice, this list of conditions and the following disclaimer.

     9 #     * Redistributions in binary form must reproduce the above

    10 # copyright notice, this list of conditions and the following disclaimer

    11 # in the documentation and/or other materials provided with the

    12 # distribution.

    13 #     * Neither the name of Google Inc. nor the names of its

    14 # contributors may be used to endorse or promote products derived from

    15 # this software without specific prior written permission.

    16 # 

    17 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

    18 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

    19 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

    20 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

    21 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

    22 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

    23 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

    24 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

    25 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    26 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

    27 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    28 

    29 from datetime import datetime

    30 import logging

    31 import urllib

    32 import urllib2

    33 

    34 from google.appengine.ext import db

    35 

    36 SVN_PATH_DASHBOARD = ("http://src.chromium.org/viewvc/chrome/trunk/tools/"

    37     "dashboards/")

    38 

    39 class DashboardFile(db.Model):

    40     name = db.StringProperty()

    41     data = db.BlobProperty()

    42     date = db.DateTimeProperty(auto_now_add=True)

    43 

    44     @classmethod

    45     def get_files(cls, name, limit=1):

    46         query = DashboardFile.all()

    47         if name:

    48             query = query.filter("name =", name)

    49         return query.order("-date").fetch(limit)

    50 

    51     @classmethod

    52     def add_file(cls, name, data):

    53         file = DashboardFile()

    54         file.name = name

    55         file.data = db.Blob(data)

    56         file.put()

    57 

    58         logging.debug("Dashboard file saved, name: %s.", name)

    59 

    60         return file

    61 

    62     @classmethod

    63     def grab_file_from_svn(cls, name):

    64         logging.debug("Grab file from SVN, name: %s.", name)

    65 

    66         url = SVN_PATH_DASHBOARD + urllib.quote_plus(name)

    67 

    68         logging.info("Grab file from SVN, url: %s.", url)

    69         try:

    70             file = urllib2.urlopen(url)

    71             if not file:

    72                 logging.error("Failed to grab dashboard file: %s.", url)

    73                 return None

    74 

    75             return file.read()

    76         except urllib2.HTTPError, e:

    77             logging.error("Failed to grab dashboard file: %s", str(e))

    78         except urllib2.URLError, e:

    79             logging.error("Failed to grab dashboard file: %s", str(e))

    80 

    81         return None

    82 

    83     @classmethod

    84     def update_file(cls, name):

    85         data = cls.grab_file_from_svn(name)

    86         if not data:

    87             return None

    88 

    89         logging.info("Got file from SVN.")

    90 

    91         files = cls.get_files(name)

    92         if not files:

    93             logging.info("No existing file, added as new file.")

    94             return cls.add_file(name, data)

    95         

    96         logging.debug("Updating existing file.")

    97         file = files[0]

    98         file.data = data

    99         file.date = datetime.now()

   100         file.put()

   101 

   102         logging.info("Dashboard file replaced, name: %s.", name)

   103 

   104         return file

   105 

   106     @classmethod

   107     def delete_file(cls, name):

   108         files = cls.get_files(name)

   109         if not files:

   110             logging.warning("File not found, name: %s.", name)

   111             return False

   112 

   113         for file in files:

   114             file.delete()

   115 

   116         return True