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/*
*
* Copyright 2014, 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.
*
*/
// TODO(yangg) maybe move to internal/common
#include <grpc++/completion_queue.h>
#include <grpc/grpc.h>
#include <grpc/support/log.h>
#include <grpc/support/time.h>
#include "src/cpp/util/time.h"
#include <grpc++/async_server_context.h>
namespace grpc {
CompletionQueue::CompletionQueue() { cq_ = grpc_completion_queue_create(); }
CompletionQueue::~CompletionQueue() { grpc_completion_queue_destroy(cq_); }
void CompletionQueue::Shutdown() { grpc_completion_queue_shutdown(cq_); }
CompletionQueue::CompletionType CompletionQueue::Next(void** tag) {
grpc_event* ev;
CompletionType return_type;
bool success;
ev = grpc_completion_queue_next(cq_, gpr_inf_future);
if (!ev) {
gpr_log(GPR_ERROR, "no next event in queue");
abort();
}
switch (ev->type) {
case GRPC_QUEUE_SHUTDOWN:
return_type = QUEUE_CLOSED;
break;
case GRPC_READ:
*tag = ev->tag;
if (ev->data.read) {
success =
static_cast<AsyncServerContext*>(ev->tag)->ParseRead(ev->data.read);
return_type = success ? SERVER_READ_OK : SERVER_READ_ERROR;
} else {
return_type = SERVER_READ_ERROR;
}
break;
case GRPC_WRITE_ACCEPTED:
*tag = ev->tag;
if (ev->data.write_accepted != GRPC_OP_ERROR) {
return_type = SERVER_WRITE_OK;
} else {
return_type = SERVER_WRITE_ERROR;
}
break;
case GRPC_SERVER_RPC_NEW:
GPR_ASSERT(!ev->tag);
// Finishing the pending new rpcs after the server has been shutdown.
if (!ev->call) {
*tag = nullptr;
} else {
*tag = new AsyncServerContext(ev->call, ev->data.server_rpc_new.method,
ev->data.server_rpc_new.host,
AbsoluteDeadlineTimespec2Timepoint(
ev->data.server_rpc_new.deadline));
}
return_type = SERVER_RPC_NEW;
break;
case GRPC_FINISHED:
*tag = ev->tag;
return_type = RPC_END;
break;
case GRPC_FINISH_ACCEPTED:
*tag = ev->tag;
return_type = HALFCLOSE_OK;
break;
default:
// We do not handle client side messages now
gpr_log(GPR_ERROR, "client-side messages aren't supported yet");
abort();
}
grpc_event_finish(ev);
return return_type;
}
} // namespace grpc
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