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