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authorRichard Maw <richard.maw@codethink.co.uk>2012-06-13 17:21:00 +0100
committerRichard Maw <richard.maw@codethink.co.uk>2012-06-13 17:21:00 +0100
commit840c4f639bc253bcc8c1d03178e2a4e292f9e9ef (patch)
tree755cbdab98dbbd9fe1af7fcedfa24762ddb14472
parent6986f4c9c4c64217f762366d8fe34003864d8df2 (diff)
downloadmorph-840c4f639bc253bcc8c1d03178e2a4e292f9e9ef.tar.gz
morphlib: add artifact cache reference class
The artifact cache doesn't need to know the whole of an artifact object to be able to retrieve something from the cache, just the basename. This can be generated from the contents, or just saved itself.
-rw-r--r--morphlib/__init__.py1
-rw-r--r--morphlib/artifactcachereference.py43
-rw-r--r--without-test-modules1
3 files changed, 45 insertions, 0 deletions
diff --git a/morphlib/__init__.py b/morphlib/__init__.py
index baf4c253..4d9ad22e 100644
--- a/morphlib/__init__.py
+++ b/morphlib/__init__.py
@@ -26,6 +26,7 @@ class Error(cliapp.AppException):
import artifact
+import artifactcachereference
import artifactresolver
import bins
import buildenvironment
diff --git a/morphlib/artifactcachereference.py b/morphlib/artifactcachereference.py
new file mode 100644
index 00000000..4cc73290
--- /dev/null
+++ b/morphlib/artifactcachereference.py
@@ -0,0 +1,43 @@
+# Copyright (C) 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.
+
+class ArtifactCacheReference(object):
+
+ '''Represent the information needed to retrieve an artifact
+
+ The artifact cache doesn't need to know the dependencies or the
+ morphology of an artifact, it just needs to know the cache key,
+ name and kind.
+ '''
+ def __init__(self, name, cache_key, kind):
+ self.name = name
+ self.cache_key = cache_key
+ self.kind = kind
+
+ def basename(self):
+ return '%s.%s.%s' % (self.cache_key,
+ self.kind,
+ self.name)
+
+ def metadata_basename(self, metadata_name):
+ return '%s.%s.%s.%s' % (self.cache_key,
+ self.kind,
+ self.name,
+ metadata_name)
+
+ @classmethod
+ def from_artifact(klass, artifact):
+ return klass(artifact.name, artifact.cache_key,
+ artifact.source.morphology['kind'])
diff --git a/without-test-modules b/without-test-modules
index d91cc77b..936e0b07 100644
--- a/without-test-modules
+++ b/without-test-modules
@@ -1,4 +1,5 @@
morphlib/__init__.py
+morphlib/artifactcachereference.py
morphlib/builddependencygraph.py
morphlib/tester.py
morphlib/git.py