[ovs-dev] [PATCH 2/2 v2] Work around Python/C JSON unicode differences

Terry Wilson twilson at redhat.com
Tue Oct 9 16:31:33 UTC 2018


The OVS C-based JSON parser operates on bytes, so the parser_feed
function returns the number of bytes that are processed. The pure
Python JSON parser currently operates on unicode, so it expects
that Parser.feed() returns a number of characters. This difference
leads to parsing errors when unicode characters are passed to the
C JSON parser from Python.

Signed-off-by: Terry Wilson <twilson at redhat.com>
---
 python/ovs/jsonrpc.py | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/python/ovs/jsonrpc.py b/python/ovs/jsonrpc.py
index 4873cff..1323ba7 100644
--- a/python/ovs/jsonrpc.py
+++ b/python/ovs/jsonrpc.py
@@ -272,7 +272,8 @@ class Connection(object):
                 # data, so we convert it here as soon as possible.
                 if data and not error:
                     try:
-                        data = decoder.decode(data)
+                        if six.PY3 or ovs.json.PARSER == ovs.json.PARSER_PY:
+                            data = decoder.decode(data)
                     except UnicodeError:
                         error = errno.EILSEQ
                 if error:
@@ -298,7 +299,11 @@ class Connection(object):
             else:
                 if self.parser is None:
                     self.parser = ovs.json.Parser()
-                self.input = self.input[self.parser.feed(self.input):]
+                if six.PY3 and ovs.json.PARSER == ovs.json.PARSER_C:
+                    self.input = self.input.encode('utf-8')[
+                        self.parser.feed(self.input):].decode()
+                else:
+                    self.input = self.input[self.parser.feed(self.input):]
                 if self.parser.is_done():
                     msg = self.__process_msg()
                     if msg:
-- 
1.8.3.1



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