compile.py

   1 # Copyright (C) 2009, Thomas Leonard
   2 # See the README file for details, or visit http://0install.net.
   3
   4 import tempfile, shutil, os, sys
   5 import ConfigParser
   6 from logging import info
   7 from zeroinstall.support import basedir
   8
   9 import support
  10
  11 class Compiler:
  12         def __init__(self, options, src_feed_name, release_version):
  13                 self.src_feed_name = src_feed_name
  14                 self.src_feed = support.load_feed(src_feed_name)
  15                 self.archive_dir_public_url = support.get_archive_url(options, release_version, '')
  16
  17                 self.config = ConfigParser.RawConfigParser()
  18
  19                 # Start with a default configuration
  20                 self.config.add_section('global')
  21                 self.config.set('global', 'builders', 'host')
  22
  23                 self.config.add_section('builder-host')
  24                 #self.config.set('builder-host', 'build', '0launch --not-before 0.10 http://0install.net/2007/interfaces/0release.xml --build-slave "$@"')
  25                 self.config.set('builder-host', 'build', '')
  26
  27                 self.src_impl = support.get_singleton_impl(self.src_feed)
  28                 if self.src_impl.arch and self.src_impl.arch.endswith('-src'):
  29                         path = basedir.load_first_config('0install.net', '0release', 'builders.conf')
  30                         if path:
  31                                 info("Loading configuration file '%s'", path)
  32                                 self.config.read(path)
  33                         else:
  34                                 info("No builders.conf configuration; will build a binary for this host only")
  35
  36                         if options.builders is not None:
  37                                 builders = options.builders
  38                         else:
  39                                 builders = self.config.get('global', 'builders').strip()
  40                         if builders:
  41                                 self.targets = [x.strip() for x in builders.split(',')]
  42                                 info("%d build targets configured: %s", len(self.targets), self.targets)
  43                         else:
  44                                 self.targets = []
  45                                 info("No builders set; no binaries will be built")
  46                 else:
  47                         self.targets = []
  48
  49         # We run the build in a sub-process. The idea is that the build may need to run
  50         # on a different machine.
  51         def build_binaries(self):
  52                 if not self.targets: return
  53
  54                 print "Source package, so generating binaries..."
  55
  56                 archive_file = support.get_archive_basename(self.src_impl)
  57
  58                 for target in self.targets:
  59                         start = self.get('builder-' + target, 'start', None)
  60                         command = self.config.get('builder-' + target, 'build')
  61                         stop = self.get('builder-' + target, 'stop', None)
  62
  63                         binary_feed = 'binary-' + target + '.xml'
  64                         if os.path.exists(binary_feed):
  65                                 print "Feed %s already exists; not rebuilding" % binary_feed
  66                         else:
  67                                 print "\nBuilding binary with builder '%s' ...\n" % target
  68
  69                                 if start: support.show_and_run(start, [])
  70                                 try:
  71                                         args = [os.path.basename(self.src_feed_name), archive_file, self.archive_dir_public_url, binary_feed + '.new']
  72                                         if not command:
  73                                                 assert target == 'host', 'Missing build command'
  74                                                 support.check_call([sys.executable, sys.argv[0], '--build-slave'] + args)
  75                                         else:
  76                                                 support.show_and_run(command, args)
  77                                 finally:
  78                                         if stop: support.show_and_run(stop, [])
  79
  80                                 bin_feed = support.load_feed(binary_feed + '.new')
  81                                 bin_impl = support.get_singleton_impl(bin_feed)
  82                                 bin_archive_file = support.get_archive_basename(bin_impl)
  83                                 bin_size = bin_impl.download_sources[0].size
  84
  85                                 assert os.path.exists(bin_archive_file), "Compiled binary '%s' not found!" % os.path.abspath(bin_archive_file)
  86                                 assert os.path.getsize(bin_archive_file) == bin_size, "Compiled binary '%s' has wrong size!" % os.path.abspath(bin_archive_file)
  87
  88                                 os.rename(binary_feed + '.new', binary_feed)
  89
  90         def get_binary_feeds(self):
  91                 return ['binary-%s.xml' % target for target in self.targets]
  92
  93         def get(self, section, option, default):
  94                 try:
  95                         return self.config.get(section, option)
  96                 except ConfigParser.NoOptionError:
  97                         return default
  98
  99 # This is the actual build process, running on the build machine
 100 def build_slave(src_feed, archive_file, archive_dir_public_url, target_feed):
 101         try:
 102                 COMPILE = [os.environ['0COMPILE']]
 103         except KeyError:
 104                 # (build slave has an old 0release)
 105                 COMPILE = ['0launch', '--not-before=0.30', 'http://0install.net/2006/interfaces/0compile.xml']
 106
 107         feed = support.load_feed(src_feed)
 108
 109         src_feed = os.path.abspath(src_feed)
 110         archive_file = os.path.abspath(archive_file)
 111         target_feed = os.path.abspath(target_feed)
 112
 113         impl, = feed.implementations.values()
 114
 115         tmpdir = tempfile.mkdtemp(prefix = '0release-')
 116         try:
 117                 os.chdir(tmpdir)
 118                 depdir = os.path.join(tmpdir, 'dependencies')
 119                 os.mkdir(depdir)
 120
 121                 support.unpack_tarball(archive_file)
 122                 os.rename(impl.download_sources[0].extract, os.path.join(depdir, impl.id))
 123
 124                 config = ConfigParser.RawConfigParser()
 125                 config.add_section('compile')
 126                 config.set('compile', 'download-base-url', archive_dir_public_url)
 127                 config.set('compile', 'version-modifier', '')
 128                 config.set('compile', 'interface', src_feed)
 129                 config.set('compile', 'selections', '')
 130                 config.set('compile', 'metadir', '0install')
 131                 stream = open(os.path.join(tmpdir, '0compile.properties'), 'w')
 132                 try:
 133                         config.write(stream)
 134                 finally:
 135                         stream.close()
 136
 137                 support.check_call(COMPILE + ['build'], cwd = tmpdir)
 138                 support.check_call(COMPILE + ['publish', '--target-feed', target_feed], cwd = tmpdir)
 139
 140                 # TODO: run unit-tests
 141
 142                 feed = support.load_feed(target_feed)
 143                 impl = support.get_singleton_impl(feed)
 144                 archive_file = support.get_archive_basename(impl)
 145
 146                 shutil.move(archive_file, os.path.join(os.path.dirname(target_feed), archive_file))
 147         except:
 148                 print "\nLeaving temporary directory %s for inspection...\n" % tmpdir
 149                 raise
 150         else:
 151                 shutil.rmtree(tmpdir)