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# ex:ts=4:sw=4:sts=4:et
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
"""
BitBake 'Fetch' git implementation
"""
#Copyright (C) 2005 Richard Purdie
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# 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.
import os
import bb
from bb import data
from bb.fetch2 import FetchMethod
from bb.fetch2 import runfetchcmd
from bb.fetch2 import logger
class Git(FetchMethod):
"""Class to fetch a module or modules from git repositories"""
def init(self, d):
#
# Only enable _sortable revision if the key is set
#
if bb.data.getVar("BB_GIT_CLONE_FOR_SRCREV", d, True):
self._sortable_buildindex = self._sortable_buildindex_disabled
def supports(self, url, ud, d):
"""
Check to see if a given url can be fetched with git.
"""
return ud.type in ['git']
def urldata_init(self, ud, d):
"""
init git specific variable within url data
so that the git method like latest_revision() can work
"""
if 'protocol' in ud.parm:
ud.proto = ud.parm['protocol']
elif not ud.host:
ud.proto = 'file'
else:
ud.proto = "rsync"
ud.nocheckout = False
if 'nocheckout' in ud.parm:
ud.nocheckout = True
branches = ud.parm.get("branch", "master").split(',')
if len(branches) != len(ud.names):
raise bb.fetch2.ParameterError("The number of name and branch parameters is not balanced", ud.url)
ud.branches = {}
for name in ud.names:
branch = branches[ud.names.index(name)]
ud.branches[name] = branch
gitsrcname = '%s%s' % (ud.host, ud.path.replace('/', '.'))
ud.mirrortarball = 'git2_%s.tar.gz' % (gitsrcname)
ud.fullmirror = os.path.join(data.getVar("DL_DIR", d, True), ud.mirrortarball)
ud.clonedir = os.path.join(data.expand('${GITDIR}', d), gitsrcname)
ud.basecmd = data.getVar("FETCHCMD_git", d, True) or "git"
for name in ud.names:
# Ensure anything that doesn't look like a sha256 checksum/revision is translated into one
if not ud.revisions[name] or len(ud.revisions[name]) != 40 or (False in [c in "abcdef0123456789" for c in ud.revisions[name]]):
ud.revisions[name] = self.latest_revision(ud.url, ud, d, name)
ud.write_tarballs = (data.getVar("BB_GENERATE_MIRROR_TARBALLS", d, True) or "0") != "0"
ud.localfile = ud.clonedir
def localpath(self, url, ud, d):
return ud.clonedir
def need_update(self, u, ud, d):
if not os.path.exists(ud.clonedir):
return True
os.chdir(ud.clonedir)
for name in ud.names:
if not self._contains_ref(ud.revisions[name], d):
return True
if ud.write_tarballs and not os.path.exists(ud.fullmirror):
return True
return False
def try_premirror(self, u, ud, d):
# If we don't do this, updating an existing checkout with only premirrors
# is not possible
if bb.data.getVar("BB_FETCH_PREMIRRORONLY", d, True) is not None:
return True
if os.path.exists(ud.clonedir):
return False
return True
def download(self, loc, ud, d):
"""Fetch url"""
if ud.user:
username = ud.user + '@'
else:
username = ""
ud.repochanged = not os.path.exists(ud.fullmirror)
# If the checkout doesn't exist and the mirror tarball does, extract it
if not os.path.exists(ud.clonedir) and os.path.exists(ud.fullmirror):
bb.utils.mkdirhier(ud.clonedir)
os.chdir(ud.clonedir)
runfetchcmd("tar -xzf %s" % (ud.fullmirror), d)
# If the repo still doesn't exist, fallback to cloning it
if not os.path.exists(ud.clonedir):
bb.fetch2.check_network_access(d, "git clone --bare %s%s" % (ud.host, ud.path))
runfetchcmd("%s clone --bare %s://%s%s%s %s" % (ud.basecmd, ud.proto, username, ud.host, ud.path, ud.clonedir), d)
os.chdir(ud.clonedir)
# Update the checkout if needed
needupdate = False
for name in ud.names:
if not self._contains_ref(ud.revisions[name], d):
needupdate = True
if needupdate:
bb.fetch2.check_network_access(d, "git fetch %s%s" % (ud.host, ud.path), ud.url)
try:
runfetchcmd("%s remote prune origin" % ud.basecmd, d)
runfetchcmd("%s remote rm origin" % ud.basecmd, d)
except bb.fetch2.FetchError:
logger.debug(1, "No Origin")
runfetchcmd("%s remote add origin %s://%s%s%s" % (ud.basecmd, ud.proto, username, ud.host, ud.path), d)
runfetchcmd("%s fetch --all -t" % ud.basecmd, d)
runfetchcmd("%s prune-packed" % ud.basecmd, d)
runfetchcmd("%s pack-redundant --all | xargs -r rm" % ud.basecmd, d)
ud.repochanged = True
def build_mirror_data(self, url, ud, d):
# Generate a mirror tarball if needed
if ud.write_tarballs and (ud.repochanged or not os.path.exists(ud.fullmirror)):
os.chdir(ud.clonedir)
logger.info("Creating tarball of git repository")
runfetchcmd("tar -czf %s %s" % (ud.fullmirror, os.path.join(".") ), d)
def unpack(self, ud, destdir, d):
""" unpack the downloaded src to destdir"""
subdir = ud.parm.get("subpath", "")
if subdir != "":
readpathspec = ":%s" % (subdir)
else:
readpathspec = ""
destdir = os.path.join(destdir, "git/")
if os.path.exists(destdir):
bb.utils.prunedir(destdir)
runfetchcmd("git clone -s -n %s %s" % (ud.clonedir, destdir), d)
if not ud.nocheckout:
os.chdir(destdir)
runfetchcmd("%s read-tree %s%s" % (ud.basecmd, ud.revisions[ud.names[0]], readpathspec), d)
runfetchcmd("%s checkout-index -q -f -a" % ud.basecmd, d)
return True
def clean(self, ud, d):
""" clean the git directory """
bb.utils.remove(ud.localpath, True)
bb.utils.remove(ud.fullmirror)
def supports_srcrev(self):
return True
def _contains_ref(self, tag, d):
basecmd = data.getVar("FETCHCMD_git", d, True) or "git"
output = runfetchcmd("%s log --pretty=oneline -n 1 %s -- 2> /dev/null | wc -l" % (basecmd, tag), d, quiet=True)
return output.split()[0] != "0"
def _revision_key(self, url, ud, d, name):
"""
Return a unique key for the url
"""
return "git:" + ud.host + ud.path.replace('/', '.') + ud.branches[name]
def _latest_revision(self, url, ud, d, name):
"""
Compute the HEAD revision for the url
"""
if ud.user:
username = ud.user + '@'
else:
username = ""
bb.fetch2.check_network_access(d, "git ls-remote %s%s %s" % (ud.host, ud.path, ud.branches[name]))
basecmd = data.getVar("FETCHCMD_git", d, True) or "git"
cmd = "%s ls-remote %s://%s%s%s %s" % (basecmd, ud.proto, username, ud.host, ud.path, ud.branches[name])
output = runfetchcmd(cmd, d, True)
if not output:
raise bb.fetch2.FetchError("The command %s gave empty output unexpectedly" % cmd, url)
return output.split()[0]
def _build_revision(self, url, ud, d, name):
return ud.revisions[name]
def _sortable_buildindex_disabled(self, url, ud, d, rev):
"""
Return a suitable buildindex for the revision specified. This is done by counting revisions
using "git rev-list" which may or may not work in different circumstances.
"""
cwd = os.getcwd()
# Check if we have the rev already
if not os.path.exists(ud.clonedir):
print("no repo")
self.download(None, ud, d)
if not os.path.exists(ud.clonedir):
logger.error("GIT repository for %s doesn't exist in %s, cannot get sortable buildnumber, using old value", url, ud.clonedir)
return None
os.chdir(ud.clonedir)
if not self._contains_ref(rev, d):
self.download(None, ud, d)
output = runfetchcmd("%s rev-list %s -- 2> /dev/null | wc -l" % (ud.basecmd, rev), d, quiet=True)
os.chdir(cwd)
buildindex = "%s" % output.split()[0]
logger.debug(1, "GIT repository for %s in %s is returning %s revisions in rev-list before %s", url, ud.clonedir, buildindex, rev)
return buildindex
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