#224 App is working without klein - migration to twisted "complete"

1 files changed, 63 insertions, 0 deletions

diff --git a/service/pixelated/resources/attachments_resource.py b/service/pixelated/resources/attachments_resource.py
new file mode 100644
index 00000000..0ab214b9
--- /dev/null
+++ b/service/pixelated/resources/attachments_resource.py
@@ -0,0 +1,63 @@
+#
+# Copyright (c) 2014 ThoughtWorks, Inc.
+#
+# Pixelated is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Pixelated 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 Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with Pixelated. If not, see <http://www.gnu.org/licenses/>.
+
+import io
+
+import re
+from twisted.protocols.basic import FileSender
+from twisted.python.log import err
+from twisted.web.resource import Resource
+
+
+class AttachmentResource(Resource):
+    def __init__(self, attachment_id, querier):
+        Resource.__init__(self)
+        self.attachment_id = attachment_id
+        self.querier = querier
+
+    def render_GET(self, request):
+        encoding = request.args.get('encoding', [None])[0]
+        filename = request.args.get('filename', [self.attachment_id])[0]
+        attachment = self.querier.attachment(self.attachment_id, encoding)
+
+        request.setHeader(b'Content-Type', b'application/force-download')
+        request.setHeader(b'Content-Disposition', bytes('attachment; filename=' + filename))
+        bytes_io = io.BytesIO(attachment['content'])
+        d = FileSender().beginFileTransfer(bytes_io, request)
+
+        def cb_finished(_):
+            bytes_io.close()
+            request.finish()
+
+        d.addErrback(err).addCallback(cb_finished)
+
+        return d
+
+    def _extract_mimetype(self, content_type):
+        match = re.compile('([A-Za-z-]+\/[A-Za-z-]+)').search(content_type)
+        return match.group(1)
+
+
+class AttachmentsResource(Resource):
+
+    isLeaf = True
+
+    def __init__(self, querier):
+        Resource.__init__(self)
+        self.querier = querier
+
+    def getChild(self, attachment_id, request):
+        return AttachmentResource(attachment_id, self.querier)