Initial import.

1 files changed, 117 insertions, 0 deletions

diff --git a/morphlib/builder.py b/morphlib/builder.py
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+++ b/morphlib/builder.py
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+# Copyright (C) 2011  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; either 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 logging
+import os
+
+import morphlib
+
+
+class Builder(object):
+
+    '''Build binary objects for Baserock.
+    
+    The objects may be chunks or strata.'''
+    
+    def __init__(self, tempdir, msg):
+        self.tempdir = tempdir
+        self.msg = msg
+
+    def build(self, morph):
+        '''Build a binary based on a morphology.'''
+        if morph.kind == 'chunk':
+            self.build_chunk(morph)
+        elif morph.kind == 'stratum':
+            self.build_stratum(morph)
+        else:
+            raise Exception('Unknown kind of morphology: %s' % morph.kind)
+
+    def build_chunk(self, morph):
+        '''Build a chunk from a morphology.'''
+        logging.debug('Building chunk')
+        self.ex = morphlib.execute.Execute(self._build, self.msg)
+        self.ex.env['WORKAREA'] = self.tempdir.dirname
+        self.ex.env['DESTDIR'] = self._inst + '/'
+        self.create_build_tree(morph)
+        self.ex.run(morph.configure_commands)
+        self.ex.run(morph.build_commands)
+        self.ex.run(morph.test_commands)
+        self.ex.run(morph.install_commands)
+        self.create_chunk(morph)
+        self.tempdir.clear()
+        
+    def create_build_tree(self, morph):
+        '''Export sources from git into the ``self._build`` directory.'''
+
+        logging.debug('Creating build tree at %s' % self._build)
+        tarball = self.tempdir.join('sources.tar')
+        self.ex.runv(['git', 'archive',
+                      '--output', tarball,
+                      '--remote', morph.source['repo'],
+                      morph.source['ref']])
+        os.mkdir(self._build)
+        self.ex.runv(['tar', '-C', self._build, '-xf', tarball])
+        os.remove(tarball)
+
+    def create_chunk(self, morph):
+        '''Create a Baserock chunk from the ``self._inst`` directory.
+        
+        The directory must be filled in with all the relevant files already.
+        
+        '''
+
+        dirname = os.path.dirname(morph.filename)
+        filename = os.path.join(dirname, '%s.chunk' % morph.name)
+        logging.debug('Creating chunk %s at %s' % (morph.name, filename))
+        self.ex.runv(['tar', '-C', self._inst, '-czf', filename, '.'])
+
+    def build_stratum(self, morph):
+        '''Build a stratum from a morphology.'''
+        os.mkdir(self._inst)
+        self.ex = morphlib.execute.Execute(self.tempdir.dirname, self.msg)
+        for chunk_name in morph.sources:
+            filename = self._chunk_filename(morph, chunk_name)
+            self.unpack_chunk(filename)
+        self.create_stratum(morph)
+        self.tempdir.clear()
+
+    def unpack_chunk(self, filename):
+        self.ex.runv(['tar', '-C', self._inst, '-xf', filename])
+
+    def create_stratum(self, morph):
+        '''Create a Baserock stratum from the ``self._inst`` directory.
+        
+        The directory must be filled in with all the relevant files already.
+        
+        '''
+
+        dirname = os.path.dirname(morph.filename)
+        filename = os.path.join(dirname, '%s.stratum' % morph.name)
+        logging.debug('Creating stratum %s at %s' % (morph.name, filename))
+        self.ex.runv(['tar', '-C', self._inst, '-czf', filename, '.'])
+
+    @property
+    def _build(self):
+        return self.tempdir.join('build')
+
+    @property
+    def _inst(self):
+        return self.tempdir.join('inst')
+
+    def _chunk_filename(self, morph, chunk_name):
+        dirname = os.path.dirname(morph.filename)
+        return os.path.join(dirname, '%s.chunk' % chunk_name)
+