1
0
forked from brl/citadel
citadel/poky/bitbake/lib/bb/fetch2/git.py

660 lines
26 KiB
Python

# ex:ts=4:sw=4:sts=4:et
# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
"""
BitBake 'Fetch' git implementation
git fetcher support the SRC_URI with format of:
SRC_URI = "git://some.host/somepath;OptionA=xxx;OptionB=xxx;..."
Supported SRC_URI options are:
- branch
The git branch to retrieve from. The default is "master"
This option also supports multiple branch fetching, with branches
separated by commas. In multiple branches case, the name option
must have the same number of names to match the branches, which is
used to specify the SRC_REV for the branch
e.g:
SRC_URI="git://some.host/somepath;branch=branchX,branchY;name=nameX,nameY"
SRCREV_nameX = "xxxxxxxxxxxxxxxxxxxx"
SRCREV_nameY = "YYYYYYYYYYYYYYYYYYYY"
- tag
The git tag to retrieve. The default is "master"
- protocol
The method to use to access the repository. Common options are "git",
"http", "https", "file", "ssh" and "rsync". The default is "git".
- rebaseable
rebaseable indicates that the upstream git repo may rebase in the future,
and current revision may disappear from upstream repo. This option will
remind fetcher to preserve local cache carefully for future use.
The default value is "0", set rebaseable=1 for rebaseable git repo.
- nocheckout
Don't checkout source code when unpacking. set this option for the recipe
who has its own routine to checkout code.
The default is "0", set nocheckout=1 if needed.
- bareclone
Create a bare clone of the source code and don't checkout the source code
when unpacking. Set this option for the recipe who has its own routine to
checkout code and tracking branch requirements.
The default is "0", set bareclone=1 if needed.
- nobranch
Don't check the SHA validation for branch. set this option for the recipe
referring to commit which is valid in tag instead of branch.
The default is "0", set nobranch=1 if needed.
- usehead
For local git:// urls to use the current branch HEAD as the revision for use with
AUTOREV. Implies nobranch.
"""
#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 collections
import errno
import fnmatch
import os
import re
import subprocess
import tempfile
import bb
import bb.progress
from bb.fetch2 import FetchMethod
from bb.fetch2 import runfetchcmd
from bb.fetch2 import logger
class GitProgressHandler(bb.progress.LineFilterProgressHandler):
"""Extract progress information from git output"""
def __init__(self, d):
self._buffer = ''
self._count = 0
super(GitProgressHandler, self).__init__(d)
# Send an initial progress event so the bar gets shown
self._fire_progress(-1)
def write(self, string):
self._buffer += string
stages = ['Counting objects', 'Compressing objects', 'Receiving objects', 'Resolving deltas']
stage_weights = [0.2, 0.05, 0.5, 0.25]
stagenum = 0
for i, stage in reversed(list(enumerate(stages))):
if stage in self._buffer:
stagenum = i
self._buffer = ''
break
self._status = stages[stagenum]
percs = re.findall(r'(\d+)%', string)
if percs:
progress = int(round((int(percs[-1]) * stage_weights[stagenum]) + (sum(stage_weights[:stagenum]) * 100)))
rates = re.findall(r'([\d.]+ [a-zA-Z]*/s+)', string)
if rates:
rate = rates[-1]
else:
rate = None
self.update(progress, rate)
else:
if stagenum == 0:
percs = re.findall(r': (\d+)', string)
if percs:
count = int(percs[-1])
if count > self._count:
self._count = count
self._fire_progress(-count)
super(GitProgressHandler, self).write(string)
class Git(FetchMethod):
"""Class to fetch a module or modules from git repositories"""
def init(self, d):
pass
def supports(self, ud, d):
"""
Check to see if a given url can be fetched with git.
"""
return ud.type in ['git']
def supports_checksum(self, urldata):
return False
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 = "git"
if not ud.proto in ('git', 'file', 'ssh', 'http', 'https', 'rsync'):
raise bb.fetch2.ParameterError("Invalid protocol type", ud.url)
ud.nocheckout = ud.parm.get("nocheckout","0") == "1"
ud.rebaseable = ud.parm.get("rebaseable","0") == "1"
ud.nobranch = ud.parm.get("nobranch","0") == "1"
# usehead implies nobranch
ud.usehead = ud.parm.get("usehead","0") == "1"
if ud.usehead:
if ud.proto != "file":
raise bb.fetch2.ParameterError("The usehead option is only for use with local ('protocol=file') git repositories", ud.url)
ud.nobranch = 1
# bareclone implies nocheckout
ud.bareclone = ud.parm.get("bareclone","0") == "1"
if ud.bareclone:
ud.nocheckout = 1
ud.unresolvedrev = {}
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.cloneflags = "-s -n"
if ud.bareclone:
ud.cloneflags += " --mirror"
ud.shallow = d.getVar("BB_GIT_SHALLOW") == "1"
ud.shallow_extra_refs = (d.getVar("BB_GIT_SHALLOW_EXTRA_REFS") or "").split()
depth_default = d.getVar("BB_GIT_SHALLOW_DEPTH")
if depth_default is not None:
try:
depth_default = int(depth_default or 0)
except ValueError:
raise bb.fetch2.FetchError("Invalid depth for BB_GIT_SHALLOW_DEPTH: %s" % depth_default)
else:
if depth_default < 0:
raise bb.fetch2.FetchError("Invalid depth for BB_GIT_SHALLOW_DEPTH: %s" % depth_default)
else:
depth_default = 1
ud.shallow_depths = collections.defaultdict(lambda: depth_default)
revs_default = d.getVar("BB_GIT_SHALLOW_REVS", True)
ud.shallow_revs = []
ud.branches = {}
for pos, name in enumerate(ud.names):
branch = branches[pos]
ud.branches[name] = branch
ud.unresolvedrev[name] = branch
shallow_depth = d.getVar("BB_GIT_SHALLOW_DEPTH_%s" % name)
if shallow_depth is not None:
try:
shallow_depth = int(shallow_depth or 0)
except ValueError:
raise bb.fetch2.FetchError("Invalid depth for BB_GIT_SHALLOW_DEPTH_%s: %s" % (name, shallow_depth))
else:
if shallow_depth < 0:
raise bb.fetch2.FetchError("Invalid depth for BB_GIT_SHALLOW_DEPTH_%s: %s" % (name, shallow_depth))
ud.shallow_depths[name] = shallow_depth
revs = d.getVar("BB_GIT_SHALLOW_REVS_%s" % name)
if revs is not None:
ud.shallow_revs.extend(revs.split())
elif revs_default is not None:
ud.shallow_revs.extend(revs_default.split())
if (ud.shallow and
not ud.shallow_revs and
all(ud.shallow_depths[n] == 0 for n in ud.names)):
# Shallow disabled for this URL
ud.shallow = False
if ud.usehead:
ud.unresolvedrev['default'] = 'HEAD'
ud.basecmd = d.getVar("FETCHCMD_git") or "git -c core.fsyncobjectfiles=0"
write_tarballs = d.getVar("BB_GENERATE_MIRROR_TARBALLS") or "0"
ud.write_tarballs = write_tarballs != "0" or ud.rebaseable
ud.write_shallow_tarballs = (d.getVar("BB_GENERATE_SHALLOW_TARBALLS") or write_tarballs) != "0"
ud.setup_revisions(d)
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]]):
if ud.revisions[name]:
ud.unresolvedrev[name] = ud.revisions[name]
ud.revisions[name] = self.latest_revision(ud, d, name)
gitsrcname = '%s%s' % (ud.host.replace(':', '.'), ud.path.replace('/', '.').replace('*', '.'))
if gitsrcname.startswith('.'):
gitsrcname = gitsrcname[1:]
# for rebaseable git repo, it is necessary to keep mirror tar ball
# per revision, so that even the revision disappears from the
# upstream repo in the future, the mirror will remain intact and still
# contains the revision
if ud.rebaseable:
for name in ud.names:
gitsrcname = gitsrcname + '_' + ud.revisions[name]
dl_dir = d.getVar("DL_DIR")
gitdir = d.getVar("GITDIR") or (dl_dir + "/git2/")
ud.clonedir = os.path.join(gitdir, gitsrcname)
ud.localfile = ud.clonedir
mirrortarball = 'git2_%s.tar.gz' % gitsrcname
ud.fullmirror = os.path.join(dl_dir, mirrortarball)
ud.mirrortarballs = [mirrortarball]
if ud.shallow:
tarballname = gitsrcname
if ud.bareclone:
tarballname = "%s_bare" % tarballname
if ud.shallow_revs:
tarballname = "%s_%s" % (tarballname, "_".join(sorted(ud.shallow_revs)))
for name, revision in sorted(ud.revisions.items()):
tarballname = "%s_%s" % (tarballname, ud.revisions[name][:7])
depth = ud.shallow_depths[name]
if depth:
tarballname = "%s-%s" % (tarballname, depth)
shallow_refs = []
if not ud.nobranch:
shallow_refs.extend(ud.branches.values())
if ud.shallow_extra_refs:
shallow_refs.extend(r.replace('refs/heads/', '').replace('*', 'ALL') for r in ud.shallow_extra_refs)
if shallow_refs:
tarballname = "%s_%s" % (tarballname, "_".join(sorted(shallow_refs)).replace('/', '.'))
fetcher = self.__class__.__name__.lower()
ud.shallowtarball = '%sshallow_%s.tar.gz' % (fetcher, tarballname)
ud.fullshallow = os.path.join(dl_dir, ud.shallowtarball)
ud.mirrortarballs.insert(0, ud.shallowtarball)
def localpath(self, ud, d):
return ud.clonedir
def need_update(self, ud, d):
if not os.path.exists(ud.clonedir):
return True
for name in ud.names:
if not self._contains_ref(ud, d, name, ud.clonedir):
return True
if ud.shallow and ud.write_shallow_tarballs and not os.path.exists(ud.fullshallow):
return True
if ud.write_tarballs and not os.path.exists(ud.fullmirror):
return True
return False
def try_premirror(self, ud, d):
# If we don't do this, updating an existing checkout with only premirrors
# is not possible
if d.getVar("BB_FETCH_PREMIRRORONLY") is not None:
return True
if os.path.exists(ud.clonedir):
return False
return True
def download(self, ud, d):
"""Fetch url"""
no_clone = not os.path.exists(ud.clonedir)
need_update = no_clone or self.need_update(ud, d)
# A current clone is preferred to either tarball, a shallow tarball is
# preferred to an out of date clone, and a missing clone will use
# either tarball.
if ud.shallow and os.path.exists(ud.fullshallow) and need_update:
ud.localpath = ud.fullshallow
return
elif os.path.exists(ud.fullmirror) and no_clone:
bb.utils.mkdirhier(ud.clonedir)
runfetchcmd("tar -xzf %s" % ud.fullmirror, d, workdir=ud.clonedir)
repourl = self._get_repo_url(ud)
# If the repo still doesn't exist, fallback to cloning it
if not os.path.exists(ud.clonedir):
# We do this since git will use a "-l" option automatically for local urls where possible
if repourl.startswith("file://"):
repourl = repourl[7:]
clone_cmd = "LANG=C %s clone --bare --mirror %s %s --progress" % (ud.basecmd, repourl, ud.clonedir)
if ud.proto.lower() != 'file':
bb.fetch2.check_network_access(d, clone_cmd, ud.url)
progresshandler = GitProgressHandler(d)
runfetchcmd(clone_cmd, d, log=progresshandler)
# Update the checkout if needed
needupdate = False
for name in ud.names:
if not self._contains_ref(ud, d, name, ud.clonedir):
needupdate = True
if needupdate:
try:
runfetchcmd("%s remote rm origin" % ud.basecmd, d, workdir=ud.clonedir)
except bb.fetch2.FetchError:
logger.debug(1, "No Origin")
runfetchcmd("%s remote add --mirror=fetch origin %s" % (ud.basecmd, repourl), d, workdir=ud.clonedir)
fetch_cmd = "LANG=C %s fetch -f --prune --progress %s refs/*:refs/*" % (ud.basecmd, repourl)
if ud.proto.lower() != 'file':
bb.fetch2.check_network_access(d, fetch_cmd, ud.url)
progresshandler = GitProgressHandler(d)
runfetchcmd(fetch_cmd, d, log=progresshandler, workdir=ud.clonedir)
runfetchcmd("%s prune-packed" % ud.basecmd, d, workdir=ud.clonedir)
runfetchcmd("%s pack-redundant --all | xargs -r rm" % ud.basecmd, d, workdir=ud.clonedir)
try:
os.unlink(ud.fullmirror)
except OSError as exc:
if exc.errno != errno.ENOENT:
raise
for name in ud.names:
if not self._contains_ref(ud, d, name, ud.clonedir):
raise bb.fetch2.FetchError("Unable to find revision %s in branch %s even from upstream" % (ud.revisions[name], ud.branches[name]))
def build_mirror_data(self, ud, d):
if ud.shallow and ud.write_shallow_tarballs:
if not os.path.exists(ud.fullshallow):
if os.path.islink(ud.fullshallow):
os.unlink(ud.fullshallow)
tempdir = tempfile.mkdtemp(dir=d.getVar('DL_DIR'))
shallowclone = os.path.join(tempdir, 'git')
try:
self.clone_shallow_local(ud, shallowclone, d)
logger.info("Creating tarball of git repository")
runfetchcmd("tar -czf %s ." % ud.fullshallow, d, workdir=shallowclone)
runfetchcmd("touch %s.done" % ud.fullshallow, d)
finally:
bb.utils.remove(tempdir, recurse=True)
elif ud.write_tarballs and not os.path.exists(ud.fullmirror):
if os.path.islink(ud.fullmirror):
os.unlink(ud.fullmirror)
logger.info("Creating tarball of git repository")
runfetchcmd("tar -czf %s ." % ud.fullmirror, d, workdir=ud.clonedir)
runfetchcmd("touch %s.done" % ud.fullmirror, d)
def clone_shallow_local(self, ud, dest, d):
"""Clone the repo and make it shallow.
The upstream url of the new clone isn't set at this time, as it'll be
set correctly when unpacked."""
runfetchcmd("%s clone %s %s %s" % (ud.basecmd, ud.cloneflags, ud.clonedir, dest), d)
to_parse, shallow_branches = [], []
for name in ud.names:
revision = ud.revisions[name]
depth = ud.shallow_depths[name]
if depth:
to_parse.append('%s~%d^{}' % (revision, depth - 1))
# For nobranch, we need a ref, otherwise the commits will be
# removed, and for non-nobranch, we truncate the branch to our
# srcrev, to avoid keeping unnecessary history beyond that.
branch = ud.branches[name]
if ud.nobranch:
ref = "refs/shallow/%s" % name
elif ud.bareclone:
ref = "refs/heads/%s" % branch
else:
ref = "refs/remotes/origin/%s" % branch
shallow_branches.append(ref)
runfetchcmd("%s update-ref %s %s" % (ud.basecmd, ref, revision), d, workdir=dest)
# Map srcrev+depths to revisions
parsed_depths = runfetchcmd("%s rev-parse %s" % (ud.basecmd, " ".join(to_parse)), d, workdir=dest)
# Resolve specified revisions
parsed_revs = runfetchcmd("%s rev-parse %s" % (ud.basecmd, " ".join('"%s^{}"' % r for r in ud.shallow_revs)), d, workdir=dest)
shallow_revisions = parsed_depths.splitlines() + parsed_revs.splitlines()
# Apply extra ref wildcards
all_refs = runfetchcmd('%s for-each-ref "--format=%%(refname)"' % ud.basecmd,
d, workdir=dest).splitlines()
for r in ud.shallow_extra_refs:
if not ud.bareclone:
r = r.replace('refs/heads/', 'refs/remotes/origin/')
if '*' in r:
matches = filter(lambda a: fnmatch.fnmatchcase(a, r), all_refs)
shallow_branches.extend(matches)
else:
shallow_branches.append(r)
# Make the repository shallow
shallow_cmd = ['git', 'make-shallow', '-s']
for b in shallow_branches:
shallow_cmd.append('-r')
shallow_cmd.append(b)
shallow_cmd.extend(shallow_revisions)
runfetchcmd(subprocess.list2cmdline(shallow_cmd), d, workdir=dest)
def unpack(self, ud, destdir, d):
""" unpack the downloaded src to destdir"""
subdir = ud.parm.get("subpath", "")
if subdir != "":
readpathspec = ":%s" % subdir
def_destsuffix = "%s/" % os.path.basename(subdir.rstrip('/'))
else:
readpathspec = ""
def_destsuffix = "git/"
destsuffix = ud.parm.get("destsuffix", def_destsuffix)
destdir = ud.destdir = os.path.join(destdir, destsuffix)
if os.path.exists(destdir):
bb.utils.prunedir(destdir)
if ud.shallow and (not os.path.exists(ud.clonedir) or self.need_update(ud, d)):
bb.utils.mkdirhier(destdir)
runfetchcmd("tar -xzf %s" % ud.fullshallow, d, workdir=destdir)
else:
runfetchcmd("%s clone %s %s/ %s" % (ud.basecmd, ud.cloneflags, ud.clonedir, destdir), d)
repourl = self._get_repo_url(ud)
runfetchcmd("%s remote set-url origin %s" % (ud.basecmd, repourl), d, workdir=destdir)
if not ud.nocheckout:
if subdir != "":
runfetchcmd("%s read-tree %s%s" % (ud.basecmd, ud.revisions[ud.names[0]], readpathspec), d,
workdir=destdir)
runfetchcmd("%s checkout-index -q -f -a" % ud.basecmd, d, workdir=destdir)
elif not ud.nobranch:
branchname = ud.branches[ud.names[0]]
runfetchcmd("%s checkout -B %s %s" % (ud.basecmd, branchname, \
ud.revisions[ud.names[0]]), d, workdir=destdir)
runfetchcmd("%s branch %s --set-upstream-to origin/%s" % (ud.basecmd, branchname, \
branchname), d, workdir=destdir)
else:
runfetchcmd("%s checkout %s" % (ud.basecmd, ud.revisions[ud.names[0]]), d, workdir=destdir)
return True
def clean(self, ud, d):
""" clean the git directory """
bb.utils.remove(ud.localpath, True)
bb.utils.remove(ud.fullmirror)
bb.utils.remove(ud.fullmirror + ".done")
def supports_srcrev(self):
return True
def _contains_ref(self, ud, d, name, wd):
cmd = ""
if ud.nobranch:
cmd = "%s log --pretty=oneline -n 1 %s -- 2> /dev/null | wc -l" % (
ud.basecmd, ud.revisions[name])
else:
cmd = "%s branch --contains %s --list %s 2> /dev/null | wc -l" % (
ud.basecmd, ud.revisions[name], ud.branches[name])
try:
output = runfetchcmd(cmd, d, quiet=True, workdir=wd)
except bb.fetch2.FetchError:
return False
if len(output.split()) > 1:
raise bb.fetch2.FetchError("The command '%s' gave output with more then 1 line unexpectedly, output: '%s'" % (cmd, output))
return output.split()[0] != "0"
def _get_repo_url(self, ud):
"""
Return the repository URL
"""
if ud.user:
username = ud.user + '@'
else:
username = ""
return "%s://%s%s%s" % (ud.proto, username, ud.host, ud.path)
def _revision_key(self, ud, d, name):
"""
Return a unique key for the url
"""
return "git:" + ud.host + ud.path.replace('/', '.') + ud.unresolvedrev[name]
def _lsremote(self, ud, d, search):
"""
Run git ls-remote with the specified search string
"""
# Prevent recursion e.g. in OE if SRCPV is in PV, PV is in WORKDIR,
# and WORKDIR is in PATH (as a result of RSS), our call to
# runfetchcmd() exports PATH so this function will get called again (!)
# In this scenario the return call of the function isn't actually
# important - WORKDIR isn't needed in PATH to call git ls-remote
# anyway.
if d.getVar('_BB_GIT_IN_LSREMOTE', False):
return ''
d.setVar('_BB_GIT_IN_LSREMOTE', '1')
try:
repourl = self._get_repo_url(ud)
cmd = "%s ls-remote %s %s" % \
(ud.basecmd, repourl, search)
if ud.proto.lower() != 'file':
bb.fetch2.check_network_access(d, cmd, repourl)
output = runfetchcmd(cmd, d, True)
if not output:
raise bb.fetch2.FetchError("The command %s gave empty output unexpectedly" % cmd, ud.url)
finally:
d.delVar('_BB_GIT_IN_LSREMOTE')
return output
def _latest_revision(self, ud, d, name):
"""
Compute the HEAD revision for the url
"""
output = self._lsremote(ud, d, "")
# Tags of the form ^{} may not work, need to fallback to other form
if ud.unresolvedrev[name][:5] == "refs/" or ud.usehead:
head = ud.unresolvedrev[name]
tag = ud.unresolvedrev[name]
else:
head = "refs/heads/%s" % ud.unresolvedrev[name]
tag = "refs/tags/%s" % ud.unresolvedrev[name]
for s in [head, tag + "^{}", tag]:
for l in output.strip().split('\n'):
sha1, ref = l.split()
if s == ref:
return sha1
raise bb.fetch2.FetchError("Unable to resolve '%s' in upstream git repository in git ls-remote output for %s" % \
(ud.unresolvedrev[name], ud.host+ud.path))
def latest_versionstring(self, ud, d):
"""
Compute the latest release name like "x.y.x" in "x.y.x+gitHASH"
by searching through the tags output of ls-remote, comparing
versions and returning the highest match.
"""
pupver = ('', '')
tagregex = re.compile(d.getVar('UPSTREAM_CHECK_GITTAGREGEX') or "(?P<pver>([0-9][\.|_]?)+)")
try:
output = self._lsremote(ud, d, "refs/tags/*")
except bb.fetch2.FetchError or bb.fetch2.NetworkAccess:
return pupver
verstring = ""
revision = ""
for line in output.split("\n"):
if not line:
break
tag_head = line.split("/")[-1]
# Ignore non-released branches
m = re.search("(alpha|beta|rc|final)+", tag_head)
if m:
continue
# search for version in the line
tag = tagregex.search(tag_head)
if tag == None:
continue
tag = tag.group('pver')
tag = tag.replace("_", ".")
if verstring and bb.utils.vercmp(("0", tag, ""), ("0", verstring, "")) < 0:
continue
verstring = tag
revision = line.split()[0]
pupver = (verstring, revision)
return pupver
def _build_revision(self, ud, d, name):
return ud.revisions[name]
def gitpkgv_revision(self, ud, d, name):
"""
Return a sortable revision number by counting commits in the history
Based on gitpkgv.bblass in meta-openembedded
"""
rev = self._build_revision(ud, d, name)
localpath = ud.localpath
rev_file = os.path.join(localpath, "oe-gitpkgv_" + rev)
if not os.path.exists(localpath):
commits = None
else:
if not os.path.exists(rev_file) or not os.path.getsize(rev_file):
from pipes import quote
commits = bb.fetch2.runfetchcmd(
"git rev-list %s -- | wc -l" % quote(rev),
d, quiet=True).strip().lstrip('0')
if commits:
open(rev_file, "w").write("%d\n" % int(commits))
else:
commits = open(rev_file, "r").readline(128).strip()
if commits:
return False, "%s+%s" % (commits, rev[:7])
else:
return True, str(rev)
def checkstatus(self, fetch, ud, d):
try:
self._lsremote(ud, d, "")
return True
except bb.fetch2.FetchError:
return False