diff options
Diffstat (limited to 'src/python/grpcio/grpc/_adapter/_low.py')
-rw-r--r-- | src/python/grpcio/grpc/_adapter/_low.py | 96 |
1 files changed, 15 insertions, 81 deletions
diff --git a/src/python/grpcio/grpc/_adapter/_low.py b/src/python/grpcio/grpc/_adapter/_low.py index b13d8dd9dd..48410167a0 100644 --- a/src/python/grpcio/grpc/_adapter/_low.py +++ b/src/python/grpcio/grpc/_adapter/_low.py @@ -30,8 +30,8 @@ import threading from grpc import _grpcio_metadata +from grpc import _plugin_wrapping from grpc._cython import cygrpc -from grpc._adapter import _implementations from grpc._adapter import _types _USER_AGENT = 'Python-gRPC-{}'.format(_grpcio_metadata.__version__) @@ -57,78 +57,8 @@ def channel_credentials_ssl( return cygrpc.channel_credentials_ssl(root_certificates, pair) -class _WrappedCygrpcCallback(object): - - def __init__(self, cygrpc_callback): - self.is_called = False - self.error = None - self.is_called_lock = threading.Lock() - self.cygrpc_callback = cygrpc_callback - - def _invoke_failure(self, error): - # TODO(atash) translate different Exception superclasses into different - # status codes. - self.cygrpc_callback( - cygrpc.Metadata([]), cygrpc.StatusCode.internal, error.message) - - def _invoke_success(self, metadata): - try: - cygrpc_metadata = cygrpc.Metadata( - cygrpc.Metadatum(key, value) - for key, value in metadata) - except Exception as error: - self._invoke_failure(error) - return - self.cygrpc_callback(cygrpc_metadata, cygrpc.StatusCode.ok, '') - - def __call__(self, metadata, error): - with self.is_called_lock: - if self.is_called: - raise RuntimeError('callback should only ever be invoked once') - if self.error: - self._invoke_failure(self.error) - return - self.is_called = True - if error is None: - self._invoke_success(metadata) - else: - self._invoke_failure(error) - - def notify_failure(self, error): - with self.is_called_lock: - if not self.is_called: - self.error = error - - -class _WrappedPlugin(object): - - def __init__(self, plugin): - self.plugin = plugin - - def __call__(self, context, cygrpc_callback): - wrapped_cygrpc_callback = _WrappedCygrpcCallback(cygrpc_callback) - wrapped_context = _implementations.AuthMetadataContext(context.service_url, - context.method_name) - try: - self.plugin( - wrapped_context, - _implementations.AuthMetadataPluginCallback(wrapped_cygrpc_callback)) - except Exception as error: - wrapped_cygrpc_callback.notify_failure(error) - raise - - -def call_credentials_metadata_plugin(plugin, name): - """ - Args: - plugin: A callable accepting a _types.AuthMetadataContext - object and a callback (itself accepting a list of metadata key/value - 2-tuples and a None-able exception value). The callback must be eventually - called, but need not be called in plugin's invocation. - plugin's invocation must be non-blocking. - """ - return cygrpc.call_credentials_metadata_plugin( - cygrpc.CredentialsMetadataPlugin(_WrappedPlugin(plugin), name)) +call_credentials_metadata_plugin = ( + _plugin_wrapping.call_credentials_metadata_plugin) class CompletionQueue(_types.CompletionQueue): @@ -195,26 +125,30 @@ class Call(_types.Call): translated_op = cygrpc.operation_send_initial_metadata( cygrpc.Metadata( cygrpc.Metadatum(key, value) - for key, value in op.initial_metadata)) + for key, value in op.initial_metadata), + op.flags) elif op.type == _types.OpType.SEND_MESSAGE: - translated_op = cygrpc.operation_send_message(op.message) + translated_op = cygrpc.operation_send_message(op.message, op.flags) elif op.type == _types.OpType.SEND_CLOSE_FROM_CLIENT: - translated_op = cygrpc.operation_send_close_from_client() + translated_op = cygrpc.operation_send_close_from_client(op.flags) elif op.type == _types.OpType.SEND_STATUS_FROM_SERVER: translated_op = cygrpc.operation_send_status_from_server( cygrpc.Metadata( cygrpc.Metadatum(key, value) for key, value in op.trailing_metadata), op.status.code, - op.status.details) + op.status.details, + op.flags) elif op.type == _types.OpType.RECV_INITIAL_METADATA: - translated_op = cygrpc.operation_receive_initial_metadata() + translated_op = cygrpc.operation_receive_initial_metadata( + op.flags) elif op.type == _types.OpType.RECV_MESSAGE: - translated_op = cygrpc.operation_receive_message() + translated_op = cygrpc.operation_receive_message(op.flags) elif op.type == _types.OpType.RECV_STATUS_ON_CLIENT: - translated_op = cygrpc.operation_receive_status_on_client() + translated_op = cygrpc.operation_receive_status_on_client( + op.flags) elif op.type == _types.OpType.RECV_CLOSE_ON_SERVER: - translated_op = cygrpc.operation_receive_close_on_server() + translated_op = cygrpc.operation_receive_close_on_server(op.flags) else: raise ValueError('unexpected operation type {}'.format(op.type)) translated_ops.append(translated_op) |