1 files changed, 82 insertions, 0 deletions
diff --git a/client/utils/git.py b/client/utils/git.py
new file mode 100644
index 0000000..dcd74af
--- /dev/null
+++ b/client/utils/git.py
@@ -0,0 +1,82 @@
+import os
+import shutil
+
+from multiprocessing import cpu_count
+from subprocess import call, STDOUT
+from tempfile import TemporaryFile
+from utils.logging import log
+
+
+class GitRepository(object):
+	'a simple management of a git repository / source building'
+
+	def __init__(self, url, path):
+		'url - repository URL, path - local directory for the clone'
+
+		self._url = url
+		self._path = path
+
+
+	def _exists(self):
+		'check that a local repository clone exists'
+
+		# TODO verify that the repository uses the proper upstream url
+		return os.path.exists(self._path)
+
+
+	def _clone(self):
+		''
+		log("cloning repository '%s' to '%s'" % (url, path))
+
+		with TemporaryFile() as strout:
+			call(['git', 'clone', url, path], stdout=strout, stderr=STDOUT)
+
+
+	def _update(self):
+		'update an existing repository clone'
+
+		log("updating repository '%s' from '%s'" % (self._path, self._url))
+
+		# simply call git-pull and redirect stdout/stderr
+		# FIXME should verify that the repository uses the proper upstream url
+		with TemporaryFile() as strout:
+			call(['git', 'pull', self._path], stdout=strout, stderr=STDOUT)
+
+
+	def current_commit(self):
+		'returns current commit hash'
+
+		with TemporaryFile() as strout:
+			call(['git', 'rev-parse', 'HEAD'], cwd=self._path, stdout=strout, stderr=STDOUT)
+			strout.seek(0)
+			return strout.read().strip()
+
+
+	def clone_or_update(self):
+		'refreshes the repository (either clone from scratch or refresh)'
+
+		if self._exists():
+			self._update()
+		else:
+			self._clone()
+
+		log("current commit '%s'" % (self.current_commit(),))
+
+
+	def build_and_install(self, path, remove=True):
+		'builds and installs the sources'
+
+		# TODO collect output of configure and make commands
+		if os.path.exists(path):
+			shutil.rmtree(path)
+
+		with TemporaryFile() as strout:
+			log("configuring sources in '%s' with prefix '%s'" % (self._path, path))
+			call(['./configure', '--prefix', path], cwd=self._path, stdout=strout, stderr=STDOUT)
+
+		with TemporaryFile() as strout:
+			log("building sources and installing into '%s'" % (path,))
+
+			# cleanup and build using multiple cpus
+			call(['make', '-s', 'clean'], cwd=self._path, stdout=strout, stderr=STDOUT)
+			call(['make', '-s', '-j', str(cpu_count()), 'install'], cwd=self._path, stdout=strout, stderr=STDOUT)