Simplify gettign blobs by returning file-like object

1 files changed, 11 insertions, 2 deletions

diff --git a/restful_document/document.py b/restful_document/document.py
index 32fdc56..791c39d 100644
--- a/restful_document/document.py
+++ b/restful_document/document.py
@@ -25,6 +25,8 @@ from restful_document import env
 
 LAYERS = ['public', 'deleted']
 
+_PAGE_SIZE = 4096
+
 _logger = logging.getLogger('rd.document')
 
 
@@ -117,9 +119,16 @@ class Document(ad.Document):
 
     def send_blob(self, prop):
         stat = self.stat_blob(prop)
+        if stat and stat['size']:
+            env.responce['Content-Length'] = stat['size']
         env.responce['Content-Type'] = self.metadata[prop].mime_type
-        env.responce['Content-Length'] = stat['size'] if stat else 0
-        return self.get_blob(prop)
+
+        stream = self.get_blob(prop)
+        while True:
+            chunk = stream.read(_PAGE_SIZE)
+            if not chunk:
+                break
+            yield chunk
 
     def all_properties(self, reply):
         result = {}