Finish the build logs archiver, add handlers for cloud and local that handle gzip encoded archived content.

data/archivedlogs.py

@@ -1,5 +1,30 @@
+import logging
+
+from gzip import GzipFile
+from flask import send_file, abort
+from cStringIO import StringIO
+
 from data.userfiles import DelegateUserfiles, UserfilesHandlers
 
+
+JSON_MIMETYPE = 'application/json'
+
+
+logger = logging.getLogger(__name__)
+
+
+class LogArchiveHandlers(UserfilesHandlers):
+  def get(self, file_id):
+    path = self._files.get_file_id_path(file_id)
+    try:
+      with self._storage.stream_read_file(self._locations, path) as gzip_stream:
+        with GzipFile(fileobj=gzip_stream) as unzipped:
+          unzipped_buffer = StringIO(unzipped.read())
+          return send_file(unzipped_buffer, mimetype=JSON_MIMETYPE)
+    except IOError:
+      abort(404)
+
+
 class LogArchive(object):
   def __init__(self, app=None, distributed_storage=None):
     self.app = app
@@ -17,10 +42,10 @@ class LogArchive(object):
     log_archive = DelegateUserfiles(app, distributed_storage, location, path, handler_name)
 
     app.add_url_rule('/logarchive/<file_id>',
-                     view_func=UserfilesHandlers.as_view(handler_name,
-                                                         distributed_storage=distributed_storage,
-                                                         location=location,
-                                                         files=log_archive))
+                     view_func=LogArchiveHandlers.as_view(handler_name,
+                                                          distributed_storage=distributed_storage,
+                                                          location=location,
+                                                          files=log_archive))
 
     # register extension with app
     app.extensions = getattr(app, 'extensions', {})