Updating mozdownload (excluding tests)

mozdownload/factory.py

Index: mozdownload/factory.py
diff --git a/mozdownload/factory.py b/mozdownload/factory.py
new file mode 100644
index 0000000000000000000000000000000000000000..2d3ddc03d0679a9c65d3df4b9755d87e93a012c8
--- /dev/null
+++ b/mozdownload/factory.py
@@ -0,0 +1,118 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+from . import errors
+from . import scraper
+
+
+# List of known download scrapers
+scraper_types = {'candidate': scraper.ReleaseCandidateScraper,
+                 'daily': scraper.DailyScraper,
+                 'direct': scraper.DirectScraper,
+                 'release': scraper.ReleaseScraper,
+                 'tinderbox': scraper.TinderboxScraper,
+                 'try': scraper.TryScraper,
+                 }
+
+
+class FactoryScraper(scraper.Scraper):
+
+    def __init__(self, scraper_type, **kwargs):
+        """Creates an instance of a scraper class based on the given type.
+
+        :param scraper_type: The type of scraper to use.
+
+        Scraper:
+        :param application: The name of the application to download.
+        :param base_url: The base url to be used
+        :param build_number: Number of the build (for candidate, daily, and tinderbox builds).
+        :param destination: Directory or file name to download the file to.
+        :param extension: File extension of the build (e.g. ".zip").
+        :param is_stub_installer: Stub installer (Only applicable to Windows builds).
+        :param locale: Locale of the application.
+        :param log_level: Threshold for log output.
+        :param password: Password for basic HTTP authentication.
+        :param platform: Platform of the application
+        :param retry_attempts: Number of times the download will be attempted
+            in the event of a failure
+        :param retry_delay: Amount of time (in seconds) to wait between retry attempts.
+        :param timeout: Amount of time (in seconds) until a download times out.
+        :param url: URL to download.
+        :param username: Username for basic HTTP authentication.
+        :param version: Version of the application to be downloaded.
+
+        Daily builds:
+        :param branch: Name of the branch.
+        :param build_id: ID of the build to download.
+        :param date: Date of the build.
+
+        Tinderbox:
+        :param debug_build: Download a debug build.
+
+        Try:
+        :param changeset: Changeset of the try build to download.
+
+        """
+        # Check for valid arguments
+        if scraper_type in ('candidate', 'release') and not kwargs.get('version'):
+            raise ValueError('The version to download has to be specified.')
+
+        if kwargs.get('application') == 'b2g' and scraper_type in ('candidate', 'release'):
+            error_msg = '%s build is not yet supported for B2G' % scraper_type
+            raise errors.NotSupportedError(error_msg)
+
+        if kwargs.get('application') == 'fennec' and scraper_type not in ('daily'):
+            error_msg = '%s build is not yet supported for fennec' % scraper_type
+            raise errors.NotSupportedError(error_msg)
+
+        # Instantiate scraper and download the build
+        scraper_keywords = {'application': kwargs.get('application', 'firefox'),
+                            'base_url': kwargs.get('base_url', scraper.BASE_URL),
+                            'destination': kwargs.get('destination'),
+                            'extension': kwargs.get('extension'),
+                            'is_stub_installer': kwargs.get('is_stub_installer'),
+                            'locale': kwargs.get('locale'),
+                            'log_level': kwargs.get('log_level', 'INFO'),
+                            'password': kwargs.get('password'),
+                            'platform': kwargs.get('platform'),
+                            'retry_attempts': kwargs.get('retry_attempts', 0),
+                            'retry_delay': kwargs.get('retry_delay', 10),
+                            'timeout': kwargs.get('timeout'),
+                            'username': kwargs.get('username'),
+                            }
+
+        scraper_type_keywords = {
+            'release': {
+                'version': kwargs.get('version'),
+            },
+            'candidate': {
+                'build_number': kwargs.get('build_number'),
+                'version': kwargs.get('version'),
+            },
+            'daily': {
+                'branch': kwargs.get('branch', 'mozilla-central'),
+                'build_number': kwargs.get('build_number'),
+                'build_id': kwargs.get('build_id'),
+                'date': kwargs.get('date'),
+            },
+            'direct': {
+                'url': kwargs.get('url'),
+            },
+            'tinderbox': {
+                'branch': kwargs.get('branch', 'mozilla-central'),
+                'build_number': kwargs.get('build_number'),
+                'date': kwargs.get('date'),
+                'debug_build': kwargs.get('debug_build', False),
+            },
+            'try': {
+                'changeset': kwargs.get('changeset'),
+                'debug_build': kwargs.get('debug_build', False),
+            },
+        }
+
+        kwargs = scraper_keywords.copy()
+        kwargs.update(scraper_type_keywords.get(scraper_type, {}))
+
+        self.__class__ = scraper_types[scraper_type]
+        scraper_types[scraper_type].__init__(self, **kwargs)