| /* |
| * |
| * Copyright 2016 gRPC authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| /* |
| * A collection of 'macros' that help navigating the grpc object hierarchy |
| * Not intended to be robust for main-line code, often cuts across abstraction |
| * boundaries. |
| */ |
| #include <stdio.h> |
| |
| #include "src/core/ext/filters/client_channel/client_channel.h" |
| #include "src/core/ext/transport/chttp2/transport/internal.h" |
| #include "src/core/lib/channel/connected_channel.h" |
| #include "src/core/lib/surface/call.h" |
| |
| grpc_stream* grpc_transport_stream_from_call(grpc_call* call) { |
| grpc_call_stack* cs = grpc_call_get_call_stack(call); |
| for (;;) { |
| grpc_call_element* el = grpc_call_stack_element(cs, cs->count - 1); |
| if (el->filter == &grpc_client_channel_filter) { |
| grpc_core::RefCountedPtr<grpc_core::SubchannelCall> scc = |
| grpc_client_channel_get_subchannel_call(el); |
| if (scc == nullptr) { |
| fprintf(stderr, "No subchannel-call"); |
| fflush(stderr); |
| return nullptr; |
| } |
| cs = scc->GetCallStack(); |
| } else if (el->filter == &grpc_connected_filter) { |
| return grpc_connected_channel_get_stream(el); |
| } else { |
| fprintf(stderr, "Unrecognized filter: %s", el->filter->name); |
| fflush(stderr); |
| return nullptr; |
| } |
| } |
| } |
| |
| grpc_chttp2_stream* grpc_chttp2_stream_from_call(grpc_call* call) { |
| return reinterpret_cast<grpc_chttp2_stream*>( |
| grpc_transport_stream_from_call(call)); |
| } |