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/*
*
* 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"
extern "C" void grpc_summon_debugger_macros() {}
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_subchannel_call *scc = grpc_client_channel_get_subchannel_call(el);
if (scc == NULL) {
fprintf(stderr, "No subchannel-call");
return NULL;
}
cs = grpc_subchannel_call_get_call_stack(scc);
} else if (el->filter == &grpc_connected_filter) {
return grpc_connected_channel_get_stream(el);
} else {
fprintf(stderr, "Unrecognized filter: %s", el->filter->name);
return NULL;
}
}
}
grpc_chttp2_stream *grpc_chttp2_stream_from_call(grpc_call *call) {
return (grpc_chttp2_stream *)grpc_transport_stream_from_call(call);
}
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