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Unified Diff: chrome/common/extensions/docs/server2/chrome_version_utility.py

Issue 12996003: Dynamically generate a heading for Extension Docs API pages (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Finding earliest 'stable' availability using features files Created 7 years, 8 months ago
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Index: chrome/common/extensions/docs/server2/chrome_version_utility.py
diff --git a/chrome/common/extensions/docs/server2/chrome_version_utility.py b/chrome/common/extensions/docs/server2/chrome_version_utility.py
new file mode 100644
index 0000000000000000000000000000000000000000..0d9426c769e1fb053ac71c2b9e0d81fcfb0ea81f
--- /dev/null
+++ b/chrome/common/extensions/docs/server2/chrome_version_utility.py
@@ -0,0 +1,66 @@
+# Copyright (c) 2013 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import json
+import logging
+
+class ChromeVersionUtility(object):
+ '''Generates and stores API data sources corresponding to the latest branch
+ number for a given version of Chrome.
+
+ Accesses data found on omahaproxy in order to link branch numbers to version
+ numbers.
+ '''
+
+ def __init__(self,
+ base_path,
+ fetcher,
+ object_store_creator_factory):
+ self._base_path = base_path
+ self._fetcher = fetcher
+ object_store_creator = object_store_creator_factory.Create(
+ ChromeVersionUtility)
+ self._object_store = object_store_creator.Create()
+
+ def GetBranchNumberForVersion(self, version_number):
+ '''Returns the most recent branch number for a given chrome version number
+ using data stored on omahaproxy (see url_constants)
+ '''
+ if version_number == 'trunk':
+ return 'trunk'
+
+ branch = self._object_store.Get(version_number).Get()
+
+ if branch is not None:
+ return branch
+
+ try:
+ version_json = json.loads(self._fetcher.Fetch(self._base_path).content)
+ except Exception as e:
+ # If omahaproxy is having problems, report it.
+ logging.error('Could not fetch data at Omaha Proxy: %s' % (e))
+ return None
+
+ # Here, entry['title'] looks like: 'title - version#.#.branch#.#'
+ for entry in version_json['events']:
+ version_title = entry['title'].split(' - ')[1].split('.')
+ if version_title[0] == version_number:
+ self._object_store.Set(version_number, version_title[2])
+ return version_title[2]
+ return None
+
+ def GetLatestVersionNumber(self):
+ try:
+ version_json = json.loads(self._fetcher.Fetch(self._base_path).content)
+ except Exception as e:
+ logging.error('Could not fetch data at Omaha Proxy: %s' % (e))
+ return None
+
+ latest_version = 0
+ for entry in version_json['events']:
+ version_title = entry['title'].split(' - ')[1].split('.')
+ version = int(version_title[0])
+ if version > latest_version:
+ latest_version = version
+ return latest_version

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