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# Copyright 1999-2010 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
import traceback
from _emerge.SpawnProcess import SpawnProcess
import copy
import signal
import sys
import portage
from portage import os
from portage import _encodings
from portage import _unicode_encode
from portage import _unicode_decode
import codecs
from portage.elog.messages import eerror
from portage.package.ebuild.fetch import fetch
from portage.util._pty import _create_pty_or_pipe
class EbuildFetcher(SpawnProcess):
__slots__ = ("config_pool", "fetchonly", "fetchall", "pkg", "prefetch") + \
("_digests", "_settings", "_uri_map")
def _start(self):
root_config = self.pkg.root_config
portdb = root_config.trees["porttree"].dbapi
ebuild_path = portdb.findname(self.pkg.cpv, myrepo=self.pkg.repo)
if ebuild_path is None:
raise AssertionError("ebuild not found for '%s'" % self.pkg.cpv)
try:
uri_map = self._get_uri_map(portdb, ebuild_path)
except portage.exception.InvalidDependString as e:
msg_lines = []
msg = "Fetch failed for '%s' due to invalid SRC_URI: %s" % \
(self.pkg.cpv, e)
msg_lines.append(msg)
self._eerror(msg_lines)
self._set_returncode((self.pid, 1))
self.wait()
return
if not uri_map:
# Nothing to fetch.
self._set_returncode((self.pid, os.EX_OK))
self.wait()
return
self._digests = portage.Manifest(
os.path.dirname(ebuild_path), None).getTypeDigests("DIST")
settings = self.config_pool.allocate()
settings.setcpv(self.pkg)
portage.doebuild_environment(ebuild_path, 'fetch',
settings=settings, db=portdb)
if self.prefetch and \
self._prefetch_size_ok(uri_map, settings, ebuild_path):
self.config_pool.deallocate(settings)
self._set_returncode((self.pid, os.EX_OK))
self.wait()
return
nocolor = settings.get("NOCOLOR")
if self.prefetch:
settings["PORTAGE_PARALLEL_FETCHONLY"] = "1"
if self.background:
nocolor = "true"
if nocolor is not None:
settings["NOCOLOR"] = nocolor
self._settings = settings
self._uri_map = uri_map
SpawnProcess._start(self)
# Free settings now since it's no longer needed in
# this process (the subprocess has a private copy).
self.config_pool.deallocate(settings)
settings = None
self._settings = None
def _spawn(self, args, fd_pipes=None, **kwargs):
"""
Fork a subprocess, apply local settings, and call fetch().
"""
pid = os.fork()
if pid != 0:
portage.process.spawned_pids.append(pid)
return [pid]
portage.process._setup_pipes(fd_pipes)
# Use default signal handlers in order to avoid problems
# killing subprocesses as reported in bug #353239.
signal.signal(signal.SIGINT, signal.SIG_DFL)
signal.signal(signal.SIGTERM, signal.SIG_DFL)
# Force consistent color output, in case we are capturing fetch
# output through a normal pipe due to unavailability of ptys.
portage.output.havecolor = self._settings.get('NOCOLOR') \
not in ('yes', 'true')
rval = 1
try:
if fetch(self._uri_map, self._settings, fetchonly=self.fetchonly,
digests=copy.deepcopy(self._digests),
allow_missing_digests=False):
rval = os.EX_OK
except SystemExit:
raise
except:
traceback.print_exc()
finally:
# Call os._exit() from finally block, in order to suppress any
# finally blocks from earlier in the call stack. See bug #345289.
os._exit(rval)
def _get_uri_map(self, portdb, ebuild_path):
"""
This can raise InvalidDependString from portdbapi.getFetchMap().
"""
pkgdir = os.path.dirname(ebuild_path)
mytree = os.path.dirname(os.path.dirname(pkgdir))
use = None
if not self.fetchall:
use = self.pkg.use.enabled
return portdb.getFetchMap(self.pkg.cpv, useflags=use, mytree=mytree)
def _prefetch_size_ok(self, uri_map, settings, ebuild_path):
distdir = settings["DISTDIR"]
sizes = {}
for filename in uri_map:
# Use stat rather than lstat since portage.fetch() creates
# symlinks when PORTAGE_RO_DISTDIRS is used.
try:
st = os.stat(os.path.join(distdir, filename))
except OSError:
return False
if st.st_size == 0:
return False
sizes[filename] = st.st_size
digests = self._digests
for filename, actual_size in sizes.items():
size = digests.get(filename, {}).get('size')
if size is None:
continue
if size != actual_size:
return False
# All files are present and sizes are ok. In this case the normal
# fetch code will be skipped, so we need to generate equivalent
# output here.
if self.logfile is not None:
f = codecs.open(_unicode_encode(self.logfile,
encoding=_encodings['fs'], errors='strict'),
mode='a', encoding=_encodings['content'], errors='replace')
for filename in uri_map:
f.write((' * %s size ;-) ...' % \
filename).ljust(73) + '[ ok ]\n')
f.close()
return True
def _pipe(self, fd_pipes):
"""When appropriate, use a pty so that fetcher progress bars,
like wget has, will work properly."""
if self.background or not sys.stdout.isatty():
# When the output only goes to a log file,
# there's no point in creating a pty.
return os.pipe()
stdout_pipe = None
if not self.background:
stdout_pipe = fd_pipes.get(1)
got_pty, master_fd, slave_fd = \
_create_pty_or_pipe(copy_term_size=stdout_pipe)
return (master_fd, slave_fd)
def _eerror(self, lines):
out = portage.StringIO()
for line in lines:
eerror(line, phase="unpack", key=self.pkg.cpv, out=out)
msg = _unicode_decode(out.getvalue(),
encoding=_encodings['content'], errors='replace')
if msg:
self.scheduler.output(msg, log_path=self.logfile)
def _set_returncode(self, wait_retval):
SpawnProcess._set_returncode(self, wait_retval)
# Collect elog messages that might have been
# created by the pkg_nofetch phase.
# Skip elog messages for prefetch, in order to avoid duplicates.
if not self.prefetch and self.returncode != os.EX_OK:
msg_lines = []
msg = "Fetch failed for '%s'" % (self.pkg.cpv,)
if self.logfile is not None:
msg += ", Log file:"
msg_lines.append(msg)
if self.logfile is not None:
msg_lines.append(" '%s'" % (self.logfile,))
self._eerror(msg_lines)
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