Catch py3 ConnectionErrors

kafka/client_async.py

@@ -17,6 +17,10 @@ from .protocol.metadata import MetadataRequest
 from .protocol.produce import ProduceRequest
 from .version import __version__
 
+if six.PY2:
+    ConnectionError = None
+
+
 log = logging.getLogger(__name__)
 
 
@@ -503,7 +507,6 @@ class KafkaClient(object):
             ('0.8.0', MetadataRequest([])),
         ]
 
-
         for version, request in test_cases:
             connect()
             f = self.send(node_id, request)
@@ -517,8 +520,11 @@ class KafkaClient(object):
                 log.info('Broker version identifed as %s', version)
                 return version
 
-            assert isinstance(f.exception.message, socket.error)
-            assert f.exception.message.errno in (32, 54)
+            if six.PY2:
+                assert isinstance(f.exception.args[0], socket.error)
+                assert f.exception.args[0].errno in (32, 54)
+            else:
+                assert isinstance(f.exception.args[0], ConnectionError)
             log.info("Broker is not v%s -- it did not recognize %s",
                      version, request.__class__.__name__)
             continue

kafka/conn.py

@@ -13,7 +13,6 @@ import time
 import six
 
 import kafka.common as Errors
-from kafka.common import ConnectionError
 from kafka.future import Future
 from kafka.protocol.api import RequestHeader
 from kafka.protocol.commit import GroupCoordinatorResponse
@@ -21,6 +20,10 @@ from kafka.protocol.types import Int32
 from kafka.version import __version__
 
 
+if six.PY2:
+    ConnectionError = socket.error
+    BlockingIOError = Exception
+
 log = logging.getLogger(__name__)
 
 DEFAULT_SOCKET_TIMEOUT_SECONDS = 120
@@ -166,7 +169,7 @@ class BrokerConnection(object):
             sent_bytes = self._sock.send(message)
             assert sent_bytes == len(message)
             self._sock.setblocking(False)
-        except (AssertionError, socket.error) as e:
+        except (AssertionError, ConnectionError) as e:
             log.exception("Error sending %s to %s", request, self)
             error = Errors.ConnectionError(e)
             self.close(error=error)
@@ -225,8 +228,8 @@ class BrokerConnection(object):
                 # An extremely small, but non-zero, probability that there are
                 # more than 0 but not yet 4 bytes available to read
                 self._rbuffer.write(self._sock.recv(4 - self._rbuffer.tell()))
-            except socket.error as e:
-                if e.errno == errno.EWOULDBLOCK:
+            except ConnectionError as e:
+                if six.PY2 and e.errno == errno.EWOULDBLOCK:
                     # This shouldn't happen after selecting above
                     # but just in case
                     return None
@@ -234,6 +237,10 @@ class BrokerConnection(object):
                               ' closing socket', self)
                 self.close(error=Errors.ConnectionError(e))
                 return None
+            except BlockingIOError:
+                if six.PY3:
+                    return None
+                raise
 
             if self._rbuffer.tell() == 4:
                 self._rbuffer.seek(0)
@@ -249,14 +256,18 @@ class BrokerConnection(object):
             staged_bytes = self._rbuffer.tell()
             try:
                 self._rbuffer.write(self._sock.recv(self._next_payload_bytes - staged_bytes))
-            except socket.error as e:
+            except ConnectionError as e:
                 # Extremely small chance that we have exactly 4 bytes for a
                 # header, but nothing to read in the body yet
-                if e.errno == errno.EWOULDBLOCK:
+                if six.PY2 and e.errno == errno.EWOULDBLOCK:
                     return None
                 log.exception('%s: Error in recv', self)
                 self.close(error=Errors.ConnectionError(e))
                 return None
+            except BlockingIOError:
+                if six.PY3:
+                    return None
+                raise
 
             staged_bytes = self._rbuffer.tell()
             if staged_bytes > self._next_payload_bytes:
@@ -379,7 +390,7 @@ class KafkaConnection(local):
             self.close()
 
         # And then raise
-        raise ConnectionError("Kafka @ {0}:{1} went away".format(self.host, self.port))
+        raise Errors.ConnectionError("Kafka @ {0}:{1} went away".format(self.host, self.port))
 
     def _read_bytes(self, num_bytes):
         bytes_left = num_bytes