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svn.py
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svn.py
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# This file is part of Buildbot. Buildbot is free software: you can
# redistribute it and/or modify it under the terms of the GNU General Public
# License as published by the Free Software Foundation, version 2.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc., 51
# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Copyright Buildbot Team Members
import re
import urllib
import xml.dom.minidom
import xml.parsers.expat
from string import lower
from urlparse import urlparse
from urlparse import urlunparse
from twisted.internet import defer
from twisted.internet import reactor
from twisted.python import log
from buildbot.config import ConfigErrors
from buildbot.process import buildstep
from buildbot.process import remotecommand
from buildbot.steps.source.base import Source
class SVN(Source):
"""I perform Subversion checkout/update operations."""
name = 'svn'
renderables = ['repourl']
possible_methods = ('clean', 'fresh', 'clobber', 'copy', 'export', None)
def __init__(self, repourl=None, mode='incremental',
method=None, username=None,
password=None, extra_args=None, keep_on_purge=None,
depth=None, preferLastChangedRev=False, **kwargs):
self.repourl = repourl
self.username = username
self.password = password
self.extra_args = extra_args
self.keep_on_purge = keep_on_purge or []
self.depth = depth
self.method = method
self.mode = mode
self.preferLastChangedRev = preferLastChangedRev
Source.__init__(self, **kwargs)
errors = []
if not self._hasAttrGroupMember('mode', self.mode):
errors.append("mode %s is not one of %s" %
(self.mode, self._listAttrGroupMembers('mode')))
if self.method not in self.possible_methods:
errors.append("method %s is not one of %s" % (self.method, self.possible_methods))
if repourl is None:
errors.append("you must provide repourl")
if errors:
raise ConfigErrors(errors)
def startVC(self, branch, revision, patch):
self.revision = revision
self.method = self._getMethod()
self.stdio_log = self.addLogForRemoteCommands("stdio")
# if the version is new enough, and the password is set, then obfuscate it
if self.password is not None:
if not self.slaveVersionIsOlderThan('shell', '2.16'):
self.password = ('obfuscated', self.password, 'XXXXXX')
else:
log.msg("Slave does not understand obfuscation; "
"svn password will be logged")
d = self.checkSvn()
@d.addCallback
def checkInstall(svnInstalled):
if not svnInstalled:
raise buildstep.BuildStepFailed("SVN is not installed on slave")
return 0
d.addCallback(lambda _: self.sourcedirIsPatched())
@d.addCallback
def checkPatched(patched):
if patched:
return self.purge(False)
else:
return 0
d.addCallback(self._getAttrGroupMember('mode', self.mode))
if patch:
d.addCallback(self.patch, patch)
d.addCallback(self.parseGotRevision)
d.addCallback(self.finish)
d.addErrback(self.failed)
return d
@defer.inlineCallbacks
def mode_full(self, _):
if self.method == 'clobber':
yield self.clobber()
return
elif self.method in ['copy', 'export']:
yield self.copy()
return
updatable = yield self._sourcedirIsUpdatable()
if not updatable:
# blow away the old (un-updatable) directory and checkout
yield self.clobber()
elif self.method == 'clean':
yield self.clean()
elif self.method == 'fresh':
yield self.fresh()
@defer.inlineCallbacks
def mode_incremental(self, _):
updatable = yield self._sourcedirIsUpdatable()
if not updatable:
# blow away the old (un-updatable) directory and checkout
yield self.clobber()
else:
# otherwise, do an update
command = ['update']
if self.revision:
command.extend(['--revision', str(self.revision)])
yield self._dovccmd(command)
def clobber(self):
d = self.runRmdir(self.workdir)
d.addCallback(lambda _: self._checkout())
return d
def fresh(self):
d = self.purge(True)
cmd = ['update']
if self.revision:
cmd.extend(['--revision', str(self.revision)])
d.addCallback(lambda _: self._dovccmd(cmd))
return d
def clean(self):
d = self.purge(False)
cmd = ['update']
if self.revision:
cmd.extend(['--revision', str(self.revision)])
d.addCallback(lambda _: self._dovccmd(cmd))
return d
@defer.inlineCallbacks
def copy(self):
yield self.runRmdir(self.workdir)
checkout_dir = 'source'
if self.codebase:
checkout_dir = self.build.path_module.join(checkout_dir, self.codebase)
# temporarily set workdir = checkout_dir and do an incremental checkout
try:
old_workdir = self.workdir
self.workdir = checkout_dir
yield self.mode_incremental(None)
finally:
self.workdir = old_workdir
self.workdir = old_workdir
# if we're copying, copy; otherwise, export from source to build
if self.method == 'copy':
cmd = remotecommand.RemoteCommand('cpdir',
{'fromdir': checkout_dir, 'todir': self.workdir,
'logEnviron': self.logEnviron})
else:
export_cmd = ['svn', 'export']
if self.revision:
export_cmd.extend(["--revision", str(self.revision)])
if self.username:
export_cmd.extend(['--username', self.username])
if self.password is not None:
export_cmd.extend(['--password', self.password])
if self.extra_args:
export_cmd.extend(self.extra_args)
export_cmd.extend([checkout_dir, self.workdir])
cmd = remotecommand.RemoteShellCommand('', export_cmd,
env=self.env, logEnviron=self.logEnviron, timeout=self.timeout)
cmd.useLog(self.stdio_log, False)
yield self.runCommand(cmd)
if cmd.didFail():
raise buildstep.BuildStepFailed()
def finish(self, res):
d = defer.succeed(res)
@d.addCallback
def _gotResults(results):
self.setStatus(self.cmd, results)
return results
d.addCallback(self.finished)
return d
def _dovccmd(self, command, collectStdout=False, collectStderr=False, abandonOnFailure=True):
assert command, "No command specified"
command.extend(['--non-interactive', '--no-auth-cache'])
if self.username:
command.extend(['--username', self.username])
if self.password is not None:
command.extend(['--password', self.password])
if self.depth:
command.extend(['--depth', self.depth])
if self.extra_args:
command.extend(self.extra_args)
cmd = remotecommand.RemoteShellCommand(self.workdir, ['svn'] + command,
env=self.env,
logEnviron=self.logEnviron,
timeout=self.timeout,
collectStdout=collectStdout,
collectStderr=collectStderr)
cmd.useLog(self.stdio_log, False)
d = self.runCommand(cmd)
@d.addCallback
def evaluateCommand(_):
if cmd.didFail() and abandonOnFailure:
log.msg("Source step failed while running command %s" % cmd)
raise buildstep.BuildStepFailed()
if collectStdout and collectStderr:
return (cmd.stdout, cmd.stderr)
elif collectStdout:
return cmd.stdout
elif collectStderr:
return cmd.stderr
else:
return cmd.rc
return d
def _getMethod(self):
if self.method is not None and self.mode != 'incremental':
return self.method
elif self.mode == 'incremental':
return None
elif self.method is None and self.mode == 'full':
return 'fresh'
@defer.inlineCallbacks
def _sourcedirIsUpdatable(self):
# first, perform a stat to ensure that this is really an svn directory
res = yield self.pathExists(self.build.path_module.join(self.workdir, '.svn'))
if not res:
defer.returnValue(False)
return
# then run 'svn info --xml' to check that the URL matches our repourl
stdout, stderr = yield self._dovccmd(['info', '--xml'], collectStdout=True, collectStderr=True, abandonOnFailure=False)
# svn: E155037: Previous operation has not finished; run 'cleanup' if it was interrupted
if 'E155037:' in stderr:
defer.returnValue(False)
return
try:
stdout_xml = xml.dom.minidom.parseString(stdout)
extractedurl = stdout_xml.getElementsByTagName('url')[0].firstChild.nodeValue
except xml.parsers.expat.ExpatError:
msg = "Corrupted xml, aborting step"
self.stdio_log.addHeader(msg)
raise buildstep.BuildStepFailed()
defer.returnValue(extractedurl == self.svnUriCanonicalize(self.repourl))
return
@defer.inlineCallbacks
def parseGotRevision(self, _):
# if this was a full/export, then we need to check svnversion in the
# *source* directory, not the build directory
svnversion_dir = self.workdir
if self.mode == 'full' and self.method == 'export':
svnversion_dir = 'source'
cmd = remotecommand.RemoteShellCommand(svnversion_dir, ['svn', 'info', '--xml'],
env=self.env,
logEnviron=self.logEnviron,
timeout=self.timeout,
collectStdout=True)
cmd.useLog(self.stdio_log, False)
yield self.runCommand(cmd)
stdout = cmd.stdout
try:
stdout_xml = xml.dom.minidom.parseString(stdout)
except xml.parsers.expat.ExpatError:
msg = "Corrupted xml, aborting step"
self.stdio_log.addHeader(msg)
raise buildstep.BuildStepFailed()
revision = None
if self.preferLastChangedRev:
try:
revision = stdout_xml.getElementsByTagName('commit')[0].attributes['revision'].value
except (KeyError, IndexError):
msg = ("SVN.parseGotRevision unable to detect Last Changed Rev in"
" output of svn info")
log.msg(msg)
# fall through and try to get 'Revision' instead
if revision is None:
try:
revision = stdout_xml.getElementsByTagName('entry')[0].attributes['revision'].value
except (KeyError, IndexError):
msg = ("SVN.parseGotRevision unable to detect revision in"
" output of svn info")
log.msg(msg)
raise buildstep.BuildStepFailed()
msg = "Got SVN revision %s" % (revision, )
self.stdio_log.addHeader(msg)
self.updateSourceProperty('got_revision', revision)
defer.returnValue(cmd.rc)
def purge(self, ignore_ignores):
"""Delete everything that shown up on status."""
command = ['status', '--xml']
if ignore_ignores:
command.append('--no-ignore')
d = self._dovccmd(command, collectStdout=True)
@d.addCallback
def parseAndRemove(stdout):
files = []
for filename in self.getUnversionedFiles(stdout, self.keep_on_purge):
filename = self.workdir + '/' + str(filename)
files.append(filename)
if len(files) == 0:
d = defer.succeed(0)
else:
if self.slaveVersionIsOlderThan('rmdir', '2.14'):
d = self.removeFiles(files)
else:
d = self.runRmdir(files, abandonOnFailure=False)
return d
@d.addCallback
def evaluateCommand(rc):
if rc != 0:
log.msg("Failed removing files")
raise buildstep.BuildStepFailed()
return rc
return d
@staticmethod
def getUnversionedFiles(xmlStr, keep_on_purge):
try:
result_xml = xml.dom.minidom.parseString(xmlStr)
except xml.parsers.expat.ExpatError:
log.err("Corrupted xml, aborting step")
raise buildstep.BuildStepFailed()
for entry in result_xml.getElementsByTagName('entry'):
(wc_status,) = entry.getElementsByTagName('wc-status')
if wc_status.getAttribute('item') == 'external':
continue
if wc_status.getAttribute('item') == 'missing':
continue
filename = entry.getAttribute('path')
if filename in keep_on_purge or filename == '':
continue
yield filename
@defer.inlineCallbacks
def removeFiles(self, files):
for filename in files:
res = yield self.runRmdir(filename, abandonOnFailure=False)
if res:
defer.returnValue(res)
return
defer.returnValue(0)
def checkSvn(self):
cmd = remotecommand.RemoteShellCommand(self.workdir, ['svn', '--version'],
env=self.env,
logEnviron=self.logEnviron,
timeout=self.timeout)
cmd.useLog(self.stdio_log, False)
d = self.runCommand(cmd)
@d.addCallback
def evaluate(_):
return cmd.rc == 0
return d
def computeSourceRevision(self, changes):
if not changes or None in [c.revision for c in changes]:
return None
lastChange = max([int(c.revision) for c in changes])
return lastChange
@staticmethod
def svnUriCanonicalize(uri):
collapse = re.compile(r'([^/]+/\.\./?|/\./|//|/\.$|/\.\.$|^/\.\.)')
server_authority = re.compile(r'^(?:([^@]+)@)?([^:]+)(?::(.+))?$')
default_port = {'http': '80',
'https': '443',
'svn': '3690'}
relative_schemes = ['http', 'https', 'svn']
quote = lambda uri: urllib.quote(uri, "!$&'()*+,-./:=@_~")
if len(uri) == 0 or uri == '/':
return uri
(scheme, authority, path, parameters, query, fragment) = urlparse(uri)
scheme = lower(scheme)
if authority:
mo = server_authority.match(authority)
if not mo:
return uri # give up
userinfo, host, port = mo.groups()
if host[-1] == '.':
host = host[:-1]
authority = lower(host)
if userinfo:
authority = "%s@%s" % (userinfo, authority)
if port and port != default_port.get(scheme, None):
authority = "%s:%s" % (authority, port)
if scheme in relative_schemes:
last_path = path
while True:
path = collapse.sub('/', path, 1)
if last_path == path:
break
last_path = path
path = quote(urllib.unquote(path))
canonical_uri = urlunparse((scheme, authority, path, parameters, query, fragment))
if canonical_uri == '/':
return canonical_uri
elif canonical_uri[-1] == '/' and canonical_uri[-2] != '/':
return canonical_uri[:-1]
else:
return canonical_uri
def _checkout(self):
checkout_cmd = ['checkout', self.repourl, '.']
if self.revision:
checkout_cmd.extend(["--revision", str(self.revision)])
if self.retry:
abandonOnFailure = (self.retry[1] <= 0)
else:
abandonOnFailure = True
d = self._dovccmd(checkout_cmd, abandonOnFailure=abandonOnFailure)
def _retry(res):
if self.stopped or res == 0:
return res
delay, repeats = self.retry
if repeats > 0:
log.msg("Checkout failed, trying %d more times after %d seconds"
% (repeats, delay))
self.retry = (delay, repeats - 1)
df = defer.Deferred()
df.addCallback(lambda _: self.runRmdir(self.workdir))
df.addCallback(lambda _: self._checkout())
reactor.callLater(delay, df.callback, None)
return df
return res
if self.retry:
d.addCallback(_retry)
return d