src/core/tsi/alts/handshaker/alts_shared_resource.cc


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/*
 *
 * Copyright 2018 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.
 *
 */

#include <grpc/support/port_platform.h>

#include "src/core/tsi/alts/handshaker/alts_shared_resource.h"

#include <grpc/support/log.h>

#include "src/core/tsi/alts/handshaker/alts_handshaker_client.h"

static alts_shared_resource_dedicated g_alts_resource_dedicated;
static alts_shared_resource* g_shared_resources = alts_get_shared_resource();

alts_shared_resource_dedicated* grpc_alts_get_shared_resource_dedicated(void) {
  return &g_alts_resource_dedicated;
}

static void thread_worker(void* arg) {
  while (true) {
    grpc_event event =
        grpc_completion_queue_next(g_alts_resource_dedicated.cq,
                                   gpr_inf_future(GPR_CLOCK_REALTIME), nullptr);
    GPR_ASSERT(event.type != GRPC_QUEUE_TIMEOUT);
    if (event.type == GRPC_QUEUE_SHUTDOWN) {
      break;
    }
    GPR_ASSERT(event.type == GRPC_OP_COMPLETE);
    alts_handshaker_client* client =
        static_cast<alts_handshaker_client*>(event.tag);
    alts_handshaker_client_handle_response(client, event.success);
  }
}

void grpc_alts_shared_resource_dedicated_init() {
  g_alts_resource_dedicated.cq = nullptr;
}

void grpc_alts_shared_resource_dedicated_start() {
  g_alts_resource_dedicated.cq = grpc_completion_queue_create_for_next(nullptr);
  g_alts_resource_dedicated.thread =
      grpc_core::Thread("alts_tsi_handshaker", &thread_worker, nullptr);
  g_alts_resource_dedicated.interested_parties = grpc_pollset_set_create();
  grpc_pollset_set_add_pollset(g_alts_resource_dedicated.interested_parties,
                               grpc_cq_pollset(g_alts_resource_dedicated.cq));
  g_alts_resource_dedicated.thread.Start();
}

void grpc_alts_shared_resource_dedicated_shutdown() {
  if (g_alts_resource_dedicated.cq != nullptr) {
    grpc_pollset_set_del_pollset(g_alts_resource_dedicated.interested_parties,
                                 grpc_cq_pollset(g_alts_resource_dedicated.cq));
    grpc_completion_queue_shutdown(g_alts_resource_dedicated.cq);
    g_alts_resource_dedicated.thread.Join();
    grpc_pollset_set_destroy(g_alts_resource_dedicated.interested_parties);
    grpc_completion_queue_destroy(g_alts_resource_dedicated.cq);
  }
}