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# Copyright (C) 2006-2011 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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from __future__ import absolute_import
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from urlparse import urlsplit, urlunsplit
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__version__ as _bzrlib_version,
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from bzrlib.transport.http import _urllib2_wrappers
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export BZR_LP_XMLRPC_URL=http://xmlrpc.staging.launchpad.net/bazaar/
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class InvalidLaunchpadInstance(errors.BzrError):
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_fmt = "%(lp_instance)s is not a valid Launchpad instance."
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def __init__(self, lp_instance):
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errors.BzrError.__init__(self, lp_instance=lp_instance)
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class NotLaunchpadBranch(errors.BzrError):
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_fmt = "%(url)s is not registered on Launchpad."
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def __init__(self, url):
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errors.BzrError.__init__(self, url=url)
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class XMLRPCTransport(xmlrpclib.Transport):
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def __init__(self, scheme):
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xmlrpclib.Transport.__init__(self)
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self._opener = _urllib2_wrappers.Opener()
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def request(self, host, handler, request_body, verbose=0):
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self.verbose = verbose
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url = self._scheme + "://" + host + handler
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request = _urllib2_wrappers.Request("POST", url, request_body)
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# FIXME: _urllib2_wrappers will override user-agent with its own
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# request.add_header("User-Agent", self.user_agent)
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request.add_header("Content-Type", "text/xml")
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response = self._opener.open(request)
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if response.code != 200:
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raise xmlrpclib.ProtocolError(host + handler, response.code,
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response.msg, response.info())
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return self.parse_response(response)
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class LaunchpadService(object):
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"""A service to talk to Launchpad via XMLRPC.
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See http://wiki.bazaar.canonical.com/Specs/LaunchpadRpc for the methods we can call.
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'production': 'launchpad.net',
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'staging': 'staging.launchpad.net',
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'qastaging': 'qastaging.launchpad.net',
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'demo': 'demo.launchpad.net',
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'dev': 'launchpad.dev',
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# NB: these should always end in a slash to avoid xmlrpclib appending
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LAUNCHPAD_INSTANCE = {}
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for instance, domain in LAUNCHPAD_DOMAINS.iteritems():
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LAUNCHPAD_INSTANCE[instance] = 'https://xmlrpc.%s/bazaar/' % domain
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# We use production as the default because edge has been deprecated circa
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# 2010-11 (see bug https://bugs.launchpad.net/bzr/+bug/583667)
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DEFAULT_INSTANCE = 'production'
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DEFAULT_SERVICE_URL = LAUNCHPAD_INSTANCE[DEFAULT_INSTANCE]
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registrant_email = None
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registrant_password = None
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def __init__(self, transport=None, lp_instance=None):
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"""Construct a new service talking to the launchpad rpc server"""
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self._lp_instance = lp_instance
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if transport is None:
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uri_type = urllib.splittype(self.service_url)[0]
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transport = XMLRPCTransport(uri_type)
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transport.user_agent = 'bzr/%s (xmlrpclib/%s)' \
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% (_bzrlib_version, xmlrpclib.__version__)
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self.transport = transport
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def service_url(self):
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"""Return the http or https url for the xmlrpc server.
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This does not include the username/password credentials.
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key = 'BZR_LP_XMLRPC_URL'
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if key in os.environ:
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return os.environ[key]
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elif self._lp_instance is not None:
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return self.LAUNCHPAD_INSTANCE[self._lp_instance]
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raise InvalidLaunchpadInstance(self._lp_instance)
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return self.DEFAULT_SERVICE_URL
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def for_url(cls, url, **kwargs):
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"""Return the Launchpad service corresponding to the given URL."""
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result = urlsplit(url)
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lp_instance = result[1]
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if lp_instance == '':
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elif lp_instance not in cls.LAUNCHPAD_INSTANCE:
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raise errors.InvalidURL(path=url)
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return cls(lp_instance=lp_instance, **kwargs)
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def get_proxy(self, authenticated):
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"""Return the proxy for XMLRPC requests."""
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# auth info must be in url
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# TODO: if there's no registrant email perhaps we should
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# just connect anonymously?
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scheme, hostinfo, path = urlsplit(self.service_url)[:3]
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raise AssertionError(hostinfo)
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if self.registrant_email is None:
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raise AssertionError()
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if self.registrant_password is None:
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raise AssertionError()
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# TODO: perhaps fully quote the password to make it very slightly
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# TODO: can we perhaps add extra Authorization headers
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# directly to the request, rather than putting this into
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# the url? perhaps a bit more secure against accidentally
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# revealing it. std66 s3.2.1 discourages putting the
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# password in the url.
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hostinfo = '%s:%s@%s' % (urlutils.quote(self.registrant_email),
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urlutils.quote(self.registrant_password),
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url = urlunsplit((scheme, hostinfo, path, '', ''))
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url = self.service_url
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return xmlrpclib.ServerProxy(url, transport=self.transport)
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def gather_user_credentials(self):
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"""Get the password from the user."""
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the_config = config.GlobalConfig()
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self.registrant_email = the_config.user_email()
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if self.registrant_password is None:
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auth = config.AuthenticationConfig()
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scheme, hostinfo = urlsplit(self.service_url)[:2]
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prompt = 'launchpad.net password for %s: ' % \
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self.registrant_email
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# We will reuse http[s] credentials if we can, prompt user
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self.registrant_password = auth.get_password(scheme, hostinfo,
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self.registrant_email,
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def send_request(self, method_name, method_params, authenticated):
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proxy = self.get_proxy(authenticated)
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method = getattr(proxy, method_name)
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result = method(*method_params)
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except xmlrpclib.ProtocolError, e:
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# TODO: This can give a ProtocolError representing a 301 error, whose
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# e.headers['location'] tells where to go and e.errcode==301; should
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# probably log something and retry on the new url.
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raise NotImplementedError("should resend request to %s, but this isn't implemented"
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% e.headers.get('Location', 'NO-LOCATION-PRESENT'))
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# we don't want to print the original message because its
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# str representation includes the plaintext password.
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# TODO: print more headers to help in tracking down failures
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raise errors.BzrError("xmlrpc protocol error connecting to %s: %s %s"
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% (self.service_url, e.errcode, e.errmsg))
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except socket.gaierror, e:
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raise errors.ConnectionError(
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"Could not resolve '%s'" % self.domain,
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if self._lp_instance is None:
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instance = self.DEFAULT_INSTANCE
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instance = self._lp_instance
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return self.LAUNCHPAD_DOMAINS[instance]
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def _guess_branch_path(self, branch_url, _request_factory=None):
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scheme, hostinfo, path = urlsplit(branch_url)[:3]
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if _request_factory is None:
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_request_factory = ResolveLaunchpadPathRequest
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resolve = _request_factory(path)
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result = resolve.submit(self)
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except xmlrpclib.Fault, fault:
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raise errors.InvalidURL(branch_url, str(fault))
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branch_url = result['urls'][0]
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path = urlsplit(branch_url)[2]
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for domain in self.LAUNCHPAD_DOMAINS.itervalues())
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if hostinfo not in domains:
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raise NotLaunchpadBranch(branch_url)
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return path.lstrip('/')
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def get_web_url_from_branch_url(self, branch_url, _request_factory=None):
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"""Get the Launchpad web URL for the given branch URL.
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:raise errors.InvalidURL: if 'branch_url' cannot be identified as a
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Launchpad branch URL.
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:return: The URL of the branch on Launchpad.
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path = self._guess_branch_path(branch_url, _request_factory)
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return urlutils.join('https://code.%s' % self.domain, path)
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class BaseRequest(object):
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"""Base request for talking to a XMLRPC server."""
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# Set this to the XMLRPC method name.
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_authenticated = True
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def _request_params(self):
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"""Return the arguments to pass to the method"""
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raise NotImplementedError(self._request_params)
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def submit(self, service):
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"""Submit request to Launchpad XMLRPC server.
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:param service: LaunchpadService indicating where to send
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the request and the authentication credentials.
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return service.send_request(self._methodname, self._request_params(),
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class DryRunLaunchpadService(LaunchpadService):
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"""Service that just absorbs requests without sending to server.
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The dummy service does not need authentication.
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def send_request(self, method_name, method_params, authenticated):
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def gather_user_credentials(self):
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class BranchRegistrationRequest(BaseRequest):
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"""Request to tell Launchpad about a bzr branch."""
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_methodname = 'register_branch'
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def __init__(self, branch_url,
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branch_description='',
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raise errors.InvalidURL(branch_url, "You need to specify a non-empty branch URL.")
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self.branch_url = branch_url
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self.branch_name = branch_name
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self.branch_name = self._find_default_branch_name(self.branch_url)
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self.branch_title = branch_title
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self.branch_description = branch_description
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self.author_email = author_email
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self.product_name = product_name
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def _request_params(self):
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"""Return xmlrpc request parameters"""
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# This must match the parameter tuple expected by Launchpad for this
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return (self.branch_url,
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self.branch_description,
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def _find_default_branch_name(self, branch_url):
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i = branch_url.rfind('/')
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return branch_url[i+1:]
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class BranchBugLinkRequest(BaseRequest):
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"""Request to link a bzr branch in Launchpad to a bug."""
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_methodname = 'link_branch_to_bug'
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def __init__(self, branch_url, bug_id):
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self.branch_url = branch_url
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def _request_params(self):
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"""Return xmlrpc request parameters"""
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# This must match the parameter tuple expected by Launchpad for this
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return (self.branch_url, self.bug_id, '')
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class ResolveLaunchpadPathRequest(BaseRequest):
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"""Request to resolve the path component of an lp: URL."""
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_methodname = 'resolve_lp_path'
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_authenticated = False
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def __init__(self, path):
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raise errors.InvalidURL(path=path,
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extra="You must specify a project.")
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def _request_params(self):
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"""Return xmlrpc request parameters"""