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|
# Copyright (C) 2011-2012 Codethink Limited
#
# This program 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 of the License.
#
# 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 json
import logging
import os
import shutil
import StringIO
import tarfile
import urlparse
import morphlib
def ldconfig(ex, rootdir):
'''Run ldconfig for the filesystem below ``rootdir``.
Essentially, ``rootdir`` specifies the root of a new system.
Only directories below it are considered.
``etc/ld.so.conf`` below ``rootdir`` is assumed to exist and
be populated by the right directories, and should assume
the root directory is ``rootdir``. Example: if ``rootdir``
is ``/tmp/foo``, then ``/tmp/foo/etc/ld.so.conf`` should
contain ``/lib``, not ``/tmp/foo/lib``.
The ldconfig found via ``$PATH`` is used, not the one in ``rootdir``,
since in bootstrap mode that might not yet exist, the various
implementations should be compatible enough.
'''
conf = os.path.join(rootdir, 'etc', 'ld.so.conf')
if os.path.exists(conf):
logging.debug('Running ldconfig for %s' % rootdir)
cache = os.path.join(rootdir, 'etc', 'ld.so.cache')
old_path = ex.env['PATH']
ex.env['PATH'] = '%s:/sbin:/usr/sbin:/usr/local/sbin' % old_path
ex.runv(['ldconfig', '-f', conf, '-C', cache, '-r', rootdir])
ex.env['PATH'] = old_path
else:
logging.debug('No %s, not running ldconfig' % conf)
class BinaryBlob(object):
def __init__(self, morph, repo, ref):
self.morph = morph
self.repo = repo
self.ref = ref
# The following MUST get set by the caller.
self.builddir = None
self.destdir = None
self.staging = None
self.settings = None
self.msg = None
self.cache_prefix = None
self.tempdir = None
self.built = None
self.dump_memory_profile = lambda msg: None
# Stopwatch to measure build times
self.build_watch = morphlib.stopwatch.Stopwatch()
def needs_built(self):
return []
def builds(self):
raise NotImplemented()
def build(self):
raise NotImplemented()
def filename(self, name):
return '%s.%s.%s' % (self.cache_prefix, self.morph.kind, name)
def prepare_binary_metadata(self, blob_name, **kwargs):
'''Add metadata to a binary about to be built.'''
self.msg('Adding metadata to %s' % blob_name)
meta = {
'name': blob_name,
'kind': self.morph.kind,
'description': self.morph.description,
}
for key, value in kwargs.iteritems():
meta[key] = value
dirname = os.path.join(self.destdir, 'baserock')
filename = os.path.join(dirname, '%s.meta' % blob_name)
if not os.path.exists(dirname):
os.mkdir(dirname)
with open(filename, 'w') as f:
json.dump(meta, f, indent=4)
f.write('\n')
def write_cache_metadata(self, meta):
self.msg('Writing metadata to the cache')
filename = '%s.meta' % self.cache_prefix
with open(filename, 'w') as f:
json.dump(meta, f, indent=4)
f.write('\n')
def save_build_times(self):
meta = {
'build-times': {}
}
for stage in self.build_watch.ticks.iterkeys():
meta['build-times'][stage] = {
'start': '%s' % self.build_watch.start_time(stage),
'stop': '%s' % self.build_watch.stop_time(stage),
'delta': '%.4f' % self.build_watch.start_stop_seconds(stage)
}
self.write_cache_metadata(meta)
class Chunk(BinaryBlob):
build_system = {
'autotools': {
'configure-commands': [
'if [ -e autogen.sh ]; then ./autogen.sh; fi',
'./configure --prefix=/usr',
],
'build-commands': [
'make',
],
'test-commands': [
],
'install-commands': [
'make DESTDIR="$DESTDIR" install',
],
},
}
@property
def chunks(self):
if self.morph.chunks:
return self.morph.chunks
else:
return { self.morph.name: ['.'] }
def builds(self):
ret = {}
for chunk_name in self.chunks:
ret[chunk_name] = self.filename(chunk_name)
return ret
def build(self):
logging.debug('Creating build tree at %s' % self.builddir)
self.ex = morphlib.execute.Execute(self.builddir, self.msg)
self.setup_env()
self.create_source_and_tarball()
os.mkdir(self.destdir)
if self.morph.build_system:
self.build_using_buildsystem()
else:
self.build_using_commands()
self.dump_memory_profile('after building chunk')
chunks = self.create_chunks(self.chunks)
self.dump_memory_profile('after creating chunk blobs')
return chunks
def setup_env(self):
path = self.ex.env['PATH']
tmpdir = self.ex.env.get('TMPDIR')
tools = self.ex.env.get('BOOTSTRAP_TOOLS')
distcc_hosts = self.ex.env.get('DISTCC_HOSTS')
self.ex.env.clear()
self.ex.env['TERM'] = 'dumb'
self.ex.env['SHELL'] = '/bin/sh'
self.ex.env['USER'] = \
self.ex.env['USERNAME'] = \
self.ex.env['LOGNAME'] = 'tomjon'
self.ex.env['LC_ALL'] = 'C'
self.ex.env['HOME'] = os.path.join(self.tempdir.dirname)
if tmpdir is not None:
self.ex.env['TMPDIR'] = tmpdir
if self.settings['keep-path'] or self.settings['bootstrap']:
self.ex.env['PATH'] = path
else:
bindirs = ['bin']
path = ':'.join(os.path.join(self.tempdir.dirname, x)
for x in bindirs)
self.ex.env['PATH'] = path
self.ex.env['WORKAREA'] = self.tempdir.dirname
self.ex.env['DESTDIR'] = self.destdir + '/'
self.ex.env['TOOLCHAIN_TARGET'] = \
'%s-baserock-linux-gnu' % os.uname()[4]
self.ex.env['BOOTSTRAP'] = \
'true' if self.settings['bootstrap'] else 'false'
if tools is not None:
self.ex.env['BOOTSTRAP_TOOLS'] = tools
if distcc_hosts is not None:
self.ex.env['DISTCC_HOSTS'] = distcc_hosts
if self.morph.max_jobs:
max_jobs = int(self.morph.max_jobs)
logging.debug('max_jobs from morph: %s' % max_jobs)
elif self.settings['max-jobs']:
max_jobs = self.settings['max-jobs']
logging.debug('max_jobs from settings: %s' % max_jobs)
else:
max_jobs = morphlib.util.make_concurrency()
logging.debug('max_jobs from cpu count: %s' % max_jobs)
self.ex.env['MAKEFLAGS'] = '-j%d' % max_jobs
if not self.settings['no-ccache']:
self.ex.env['PATH'] = ('/usr/lib/ccache:%s' %
self.ex.env['PATH'])
self.ex.env['CCACHE_BASEDIR'] = self.tempdir.dirname
if not self.settings['no-distcc']:
self.ex.env['CCACHE_PREFIX'] = 'distcc'
logging.debug('Environment for building chunk:')
for key in sorted(self.ex.env):
logging.debug(' %s=%s' % (key, self.ex.env[key]))
def create_source_and_tarball(self):
self.msg('Creating source tree and tarball')
with self.build_watch('create-source-tarball'):
self.dump_memory_profile('before creating source and tarball '
'for chunk')
tarball = self.cache_prefix + '.src.tar'
#FIXME Ugh use treeish everwhere
path = urlparse.urlparse(self.repo).path
t = morphlib.git.Treeish (path, self.ref)
morphlib.git.export_sources(t, tarball)
self.dump_memory_profile('after exporting sources')
os.mkdir(self.builddir)
self.ex.runv(['tar', '-C', self.builddir, '-xf', tarball])
self.dump_memory_profile('after creating source and tarball '
'for chunk')
def build_using_buildsystem(self):
bs_name = self.morph.build_system
self.msg('Building using well-known build system %s' % bs_name)
bs = self.build_system[bs_name]
self.run_sequentially('configure', bs['configure-commands'])
self.run_in_parallel('build', bs['build-commands'])
self.run_sequentially('test', bs['test-commands'])
self.run_sequentially('install', bs['install-commands'])
def build_using_commands(self):
self.msg('Building using explicit commands')
self.run_sequentially('configure', self.morph.configure_commands)
self.run_in_parallel('build', self.morph.build_commands)
self.run_sequentially('test', self.morph.test_commands)
self.run_sequentially('install', self.morph.install_commands)
def run_in_parallel(self, what, commands):
self.msg('commands: %s' % what)
with self.build_watch(what):
self.ex.run(commands)
def run_sequentially(self, what, commands):
self.msg ('commands: %s' % what)
with self.build_watch(what):
flags = self.ex.env['MAKEFLAGS']
self.ex.env['MAKEFLAGS'] = '-j1'
logging.debug('Setting MAKEFLAGS=%s' % self.ex.env['MAKEFLAGS'])
self.ex.run(commands)
self.ex.env['MAKEFLAGS'] = flags
logging.debug('Restore MAKEFLAGS=%s' % self.ex.env['MAKEFLAGS'])
def create_chunks(self, chunks):
ret = {}
with self.build_watch('create-chunks'):
for chunk_name in chunks:
self.msg('Creating chunk %s' % chunk_name)
self.prepare_binary_metadata(chunk_name)
patterns = chunks[chunk_name]
patterns += [r'baserock/%s\.' % chunk_name]
filename = self.filename(chunk_name)
self.msg('Creating binary for %s' % chunk_name)
morphlib.bins.create_chunk(self.destdir, filename, patterns,
self.ex, self.dump_memory_profile)
ret[chunk_name] = filename
files = os.listdir(self.destdir)
if files:
raise Exception('DESTDIR %s is not empty: %s' %
(self.destdir, files))
return ret
class Stratum(BinaryBlob):
def needs_built(self):
for source in self.morph.sources:
project_name = source['name']
morph_name = source['morph'] if 'morph' in source else project_name
repo = source['repo']
ref = source['ref']
chunks = source['chunks'] if 'chunks' in source else [project_name]
yield repo, ref, morph_name, chunks
def builds(self):
filename = self.filename(self.morph.name)
return { self.morph.name: filename }
def build(self):
os.mkdir(self.destdir)
ex = morphlib.execute.Execute(self.destdir, self.msg)
with self.build_watch('unpack-chunks'):
for chunk_name, filename in self.built:
self.msg('Unpacking chunk %s' % chunk_name)
morphlib.bins.unpack_binary(filename, self.destdir, ex)
with self.build_watch('create-binary'):
self.prepare_binary_metadata(self.morph.name)
self.msg('Creating binary for %s' % self.morph.name)
filename = self.filename(self.morph.name)
morphlib.bins.create_stratum(self.destdir, filename, ex)
return { self.morph.name: filename }
class System(BinaryBlob):
def needs_built(self):
for stratum_name in self.morph.strata:
yield self.repo, self.ref, stratum_name, [stratum_name]
def builds(self):
filename = self.filename(self.morph.name)
return { self.morph.name: filename }
def build(self):
self.ex = morphlib.execute.Execute(self.tempdir.dirname, self.msg)
# Create image.
with self.build_watch('create-image'):
image_name = self.tempdir.join('%s.img' % self.morph.name)
self.ex.runv(['qemu-img', 'create', '-f', 'raw', image_name,
self.morph.disk_size])
# Partition it.
with self.build_watch('partition-image'):
self.ex.runv(['parted', '-s', image_name, 'mklabel', 'msdos'])
self.ex.runv(['parted', '-s', image_name, 'mkpart', 'primary',
'0%', '100%'])
self.ex.runv(['parted', '-s', image_name, 'set', '1', 'boot', 'on'])
# Install first stage boot loader into MBR.
with self.build_watch('install-mbr'):
self.ex.runv(['install-mbr', image_name])
# Setup device mapper to access the partition.
with self.build_watch('setup-device-mapper'):
out = self.ex.runv(['kpartx', '-av', image_name])
devices = [line.split()[2]
for line in out.splitlines()
if line.startswith('add map ')]
partition = '/dev/mapper/%s' % devices[0]
mount_point = None
try:
# Create filesystem.
with self.build_watch('create-filesystem'):
self.ex.runv(['mkfs', '-t', 'ext3', partition])
# Mount it.
with self.build_watch('mount-filesystem'):
mount_point = self.tempdir.join('mnt')
os.mkdir(mount_point)
self.ex.runv(['mount', partition, mount_point])
# Unpack all strata into filesystem.
# Also, run ldconfig.
with self.build_watch('unpack-strata'):
for name, filename in self.built:
self.msg('unpack %s from %s' % (name, filename))
self.ex.runv(['tar', '-C', mount_point, '-xf', filename])
ldconfig(ex, mount_point)
# Create fstab.
with self.build_watch('create-fstab'):
fstab = self.tempdir.join('mnt/etc/fstab')
# sorry about the hack, I wish I knew a better way
self.ex.runv(['tee', fstab], feed_stdin='''
proc /proc proc defaults 0 0
sysfs /sys sysfs defaults 0 0
/dev/sda1 / ext4 errors=remount-ro 0 1
''', stdout=open(os.devnull,'w'))
# Install extlinux bootloader.
with self.build_watch('install-bootloader'):
conf = os.path.join(mount_point, 'extlinux.conf')
logging.debug('configure extlinux %s' % conf)
self.ex.runv(['tee', conf], feed_stdin='''
default linux
timeout 1
label linux
kernel /vmlinuz
append root=/dev/sda1 init=/sbin/init quiet rw
''', stdout=open(os.devnull, 'w'))
self.ex.runv(['extlinux', '--install', mount_point])
# Weird hack that makes extlinux work.
# FIXME: There is a bug somewhere.
self.ex.runv(['sync'])
import time; time.sleep(2)
# Unmount.
with self.build_watch('unmount-filesystem'):
self.ex.runv(['umount', mount_point])
except BaseException, e:
# Unmount.
if mount_point is not None:
try:
self.ex.runv(['umount', mount_point])
except Exception:
pass
# Undo device mapping.
try:
self.ex.runv(['kpartx', '-d', image_name])
except Exception:
pass
raise
# Undo device mapping.
with self.build_watch('undo-device-mapper'):
self.ex.runv(['kpartx', '-d', image_name])
# Move image file to cache.
with self.build_watch('cache-image'):
filename = self.filename(self.morph.name)
self.ex.runv(['mv', image_name, filename])
return { self.morph.name: filename }
class Builder(object):
'''Build binary objects for Baserock.
The objects may be chunks or strata.'''
def __init__(self, tempdir, app):
self.tempdir = tempdir
self.real_msg = app.msg
self.settings = app.settings
self.dump_memory_profile = app.dump_memory_profile
self.cachedir = morphlib.cachedir.CacheDir(self.settings['cachedir'])
self.indent = 0
self.morph_loader = \
morphlib.morphologyloader.MorphologyLoader(self.settings)
def msg(self, text):
spaces = ' ' * self.indent
self.real_msg('%s%s' % (spaces, text))
def indent_more(self):
self.indent += 1
def indent_less(self):
self.indent -= 1
def build(self, repo, ref, filename):
'''Build a binary based on a morphology.'''
self.dump_memory_profile('at start of build method')
self.indent_more()
self.msg('build %s|%s|%s' % (repo, ref, filename))
morph = self.morph_loader.load(repo, ref, filename)
repo = morph.repo
self.dump_memory_profile('after getting morph from git')
if morph.kind == 'chunk':
blob = Chunk(morph, repo, ref)
elif morph.kind == 'stratum':
blob = Stratum(morph, repo, ref)
elif morph.kind == 'system':
blob = System(morph, repo, ref)
else:
raise Exception('Unknown kind of morphology: %s' % morph.kind)
self.dump_memory_profile('after creating Chunk/Stratum/...')
cache_id = self.get_cache_id(repo, ref, filename)
logging.debug('cachae id: %s' % repr(cache_id))
self.dump_memory_profile('after computing cache id')
blob.builddir = self.tempdir.join('%s.build' % morph.name)
blob.destdir = self.tempdir.join('%s.inst' % morph.name)
blob.staging = self.tempdir.join('staging')
if not os.path.exists(blob.staging):
os.mkdir(blob.staging)
blob.settings = self.settings
blob.msg = self.msg
blob.cache_prefix = self.cachedir.name(cache_id)
blob.tempdir = self.tempdir
blob.dump_memory_profile = self.dump_memory_profile
builds = blob.builds()
self.dump_memory_profile('after blob.builds()')
if all(os.path.exists(builds[x]) for x in builds):
for x in builds:
self.msg('using cached %s %s at %s' %
(morph.kind, x, builds[x]))
self.install_chunk(morph, x, builds[x], blob.staging)
self.dump_memory_profile('after installing chunk')
built = builds
else:
with blob.build_watch('overall-build'):
with blob.build_watch('build-needed'):
self.build_needed(blob)
self.dump_memory_profile('after building needed')
self.msg('Building %s %s' % (morph.kind, morph.name))
self.indent_more()
built = blob.build()
self.dump_memory_profile('after building blob')
self.indent_less()
for x in built:
self.msg('%s %s cached at %s' % (morph.kind, x, built[x]))
self.install_chunk(morph, x, built[x], blob.staging)
self.dump_memory_profile('after installing chunks')
blob.save_build_times()
self.indent_less()
self.dump_memory_profile('at end of build method')
return morph, built
def build_needed(self, blob):
blob.built = []
for repo, ref, morph_name, blob_names in blob.needs_built():
morph_filename = '%s.morph' % morph_name
morph, cached = self.build(repo, ref, morph_filename)
for blob_name in blob_names:
blob.built.append((blob_name, cached[blob_name]))
def install_chunk(self, morph, chunk_name, chunk_filename, staging_dir):
if morph.kind != 'chunk':
return
if self.settings['bootstrap']:
self.msg('Unpacking chunk %s onto system' % chunk_name)
ex = morphlib.execute.Execute('/', self.msg)
morphlib.bins.unpack_binary(chunk_filename, '/', ex)
ldconfig(ex, '/')
else:
self.msg('Unpacking chunk %s into staging' % chunk_name)
ex = morphlib.execute.Execute(staging_dir, self.msg)
morphlib.bins.unpack_binary(chunk_filename, staging_dir, ex)
ldconfig(ex, staging_dir)
def get_cache_id(self, repo, ref, morph_filename):
logging.debug('get_cache_id(%s, %s, %s)' %
(repo, ref, morph_filename))
morph = self.morph_loader.load(repo, ref, morph_filename)
if morph.kind == 'chunk':
kids = []
elif morph.kind == 'stratum':
kids = []
for source in morph.sources:
kid_repo = source['repo']
kid_ref = source['ref']
kid_filename = (source['morph']
if 'morph' in source
else source['name'])
kid_filename = '%s.morph' % kid_filename
kid_cache_id = self.get_cache_id(kid_repo, kid_ref,
kid_filename)
kids.append(kid_cache_id)
elif morph.kind == 'system':
kids = []
for stratum in morph.strata:
kid_filename = '%s.morph' % stratum
kid_cache_id = self.get_cache_id(repo, ref, kid_filename)
kids.append(kid_cache_id)
else:
raise NotImplementedError('unknown morph kind %s' % morph.kind)
dict_key = {
'name': morph.name,
'arch': morphlib.util.arch(),
'ref': morphlib.git.get_commit_id(repo, ref),
'kids': ''.join(self.cachedir.key(k) for k in kids),
}
return dict_key
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