Initial checkin of gRPC to third_party/

third_party/grpc/src/python/grpcio/grpc/framework/base/_cancellation.py

Index: third_party/grpc/src/python/grpcio/grpc/framework/base/_cancellation.py
diff --git a/third_party/WebKit/LayoutTests/http/tests/websocket/workers/resources/echo_wsh.py b/third_party/grpc/src/python/grpcio/grpc/framework/base/_cancellation.py
similarity index 52%
copy from third_party/WebKit/LayoutTests/http/tests/websocket/workers/resources/echo_wsh.py
copy to third_party/grpc/src/python/grpcio/grpc/framework/base/_cancellation.py
index 429f58186e3fce43dc21e81e0f9d7e20c7e0bf70..ffbc90668fb843d92063b85d12949e9c8779dec2 100644
--- a/third_party/WebKit/LayoutTests/http/tests/websocket/workers/resources/echo_wsh.py
+++ b/third_party/grpc/src/python/grpcio/grpc/framework/base/_cancellation.py
@@ -1,4 +1,4 @@
-# Copyright 2010, Google Inc.
+# Copyright 2015, Google Inc.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
@@ -27,20 +27,38 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
+"""State and behavior for operation cancellation."""
 
-from mod_pywebsocket import msgutil
+from grpc.framework.base import _interfaces
+from grpc.framework.base import interfaces
 
 
-_GOODBYE_MESSAGE = 'Goodbye'
+class CancellationManager(_interfaces.CancellationManager):
+  """An implementation of _interfaces.CancellationManager."""
 
+  def __init__(
+      self, lock, termination_manager, transmission_manager, ingestion_manager,
+      expiration_manager):
+    """Constructor.
 
-def web_socket_do_extra_handshake(request):
-    pass  # Always accept.
+    Args:
+      lock: The operation-wide lock.
+      termination_manager: The _interfaces.TerminationManager for the operation.
+      transmission_manager: The _interfaces.TransmissionManager for the
+        operation.
+      ingestion_manager: The _interfaces.IngestionManager for the operation.
+      expiration_manager: The _interfaces.ExpirationManager for the operation.
+    """
+    self._lock = lock
+    self._termination_manager = termination_manager
+    self._transmission_manager = transmission_manager
+    self._ingestion_manager = ingestion_manager
+    self._expiration_manager = expiration_manager
 
-
-def web_socket_transfer_data(request):
-    while True:
-        line = msgutil.receive_message(request)
-        msgutil.send_message(request, line)
-        if line == _GOODBYE_MESSAGE:
-            return
+  def cancel(self):
+    """See _interfaces.CancellationManager.cancel for specification."""
+    with self._lock:
+      self._termination_manager.abort(interfaces.Outcome.CANCELLED)
+      self._transmission_manager.abort(interfaces.Outcome.CANCELLED)
+      self._ingestion_manager.abort()
+      self._expiration_manager.abort()