μChannels implementation.

1 files changed, 72 insertions, 0 deletions

diff --git a/src/core/channel/client_uchannel.h b/src/core/channel/client_uchannel.h
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+++ b/src/core/channel/client_uchannel.h
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+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GRPC_INTERNAL_CORE_CHANNEL_CLIENT_MICROCHANNEL_H
+#define GRPC_INTERNAL_CORE_CHANNEL_CLIENT_MICROCHANNEL_H
+
+#include "src/core/channel/channel_stack.h"
+#include "src/core/client_config/resolver.h"
+
+#define GRPC_MICROCHANNEL_SUBCHANNEL_ARG "grpc.microchannel_subchannel_key"
+
+/* XXX A client channel is a channel that begins disconnected, and can connect
+   to some endpoint on demand. If that endpoint disconnects, it will be
+   connected to again later.
+
+   Calls on a disconnected client channel are queued until a connection is
+   established. */
+
+extern const grpc_channel_filter grpc_client_uchannel_filter;
+
+grpc_connectivity_state grpc_client_uchannel_check_connectivity_state(
+    grpc_exec_ctx *exec_ctx, grpc_channel_element *elem, int try_to_connect);
+
+void grpc_client_uchannel_watch_connectivity_state(
+    grpc_exec_ctx *exec_ctx, grpc_channel_element *elem,
+    grpc_connectivity_state *state, grpc_closure *on_complete);
+
+grpc_pollset_set *grpc_client_uchannel_get_connecting_pollset_set(
+    grpc_channel_element *elem);
+
+void grpc_client_uchannel_add_interested_party(grpc_exec_ctx *exec_ctx,
+                                               grpc_channel_element *channel,
+                                               grpc_pollset *pollset);
+void grpc_client_uchannel_del_interested_party(grpc_exec_ctx *exec_ctx,
+                                               grpc_channel_element *channel,
+                                               grpc_pollset *pollset);
+
+/** XXX args determine if we are using census, compression */
+grpc_channel *grpc_client_uchannel_create(grpc_subchannel *subchannel,
+                                          grpc_channel_args *args);
+
+#endif /* GRPC_INTERNAL_CORE_CHANNEL_CLIENT_MICROCHANNEL_H */