Add ability to download system logs

util/systemlogs.py

@@ -0,0 +1,15 @@
+import tarfile
+import os
+import cStringIO
+
+def build_logs_archive(app):
+  """ Builds a .tar.gz with the contents of the system logs found for the given app and returns
+      the binary contents.
+  """
+  path = app.config['SYSTEM_LOGS_PATH']
+  buf = cStringIO.StringIO()
+
+  with tarfile.open(mode="w:gz", fileobj=buf) as tar:
+    tar.add(path, arcname=os.path.basename(path))
+
+  return buf.getvalue()