content: /*
   * Copyright 1999-2020 Alibaba Group Holding Ltd.
   *
   * 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.
   */
  
  package com.alibaba.nacos.common.remote.client.grpc;
  
  import java.lang.annotation.Documented;
  import java.lang.annotation.ElementType;
  import java.lang.annotation.Retention;
  import java.lang.annotation.RetentionPolicy;
  import java.lang.annotation.Target;
  import java.lang.reflect.Field;
  import java.util.Collections;
  import java.util.HashSet;
  import java.util.Set;
  
  /**
   * GrpcConsts.
   *
   * @author karsonto
   */
  public class GrpcConstants {
      
      public static final String NACOS_SERVER_GRPC_PORT_OFFSET_KEY = "nacos.server.grpc.port.offset";
      
      public static final String NACOS_CLIENT_GRPC = "nacos.remote.client.grpc";
      
      @GRpcConfigLabel
      public static final String GRPC_NAME = NACOS_CLIENT_GRPC + ".name";
      
      @GRpcConfigLabel
      public static final String GRPC_THREADPOOL_KEEPALIVETIME = NACOS_CLIENT_GRPC + ".pool.alive";
      
      @GRpcConfigLabel
      public static final String GRPC_THREADPOOL_CORE_SIZE = NACOS_CLIENT_GRPC + ".pool.core.size";
      
      @GRpcConfigLabel
      public static final String GRPC_RETRY_TIMES = NACOS_CLIENT_GRPC + ".retry.times";
      
      @GRpcConfigLabel
      public static final String GRPC_TIMEOUT_MILLS = NACOS_CLIENT_GRPC + ".timeout";
      
      @GRpcConfigLabel
      public static final String GRPC_CONNECT_KEEP_ALIVE_TIME = NACOS_CLIENT_GRPC + ".connect.keep.alive";
      
      @GRpcConfigLabel
      public static final String GRPC_THREADPOOL_MAX_SIZE = NACOS_CLIENT_GRPC + ".pool.max.size";
      
      @GRpcConfigLabel
      public static final String GRPC_SERVER_CHECK_TIMEOUT = NACOS_CLIENT_GRPC + ".server.check.timeout";
      
      @GRpcConfigLabel
      public static final String GRPC_QUEUESIZE = NACOS_CLIENT_GRPC + ".queue.size";
      
      @GRpcConfigLabel
      public static final String GRPC_HEALTHCHECK_RETRY_TIMES = NACOS_CLIENT_GRPC + ".health.retry";
      
      @GRpcConfigLabel
      public static final String GRPC_HEALTHCHECK_TIMEOUT = NACOS_CLIENT_GRPC + ".health.timeout";
      
      @GRpcConfigLabel
      public static final String GRPC_MAX_INBOUND_MESSAGE_SIZE = NACOS_CLIENT_GRPC + ".maxinbound.message.size";
      
      @GRpcConfigLabel
      public static final String GRPC_CHANNEL_KEEP_ALIVE_TIME = NACOS_CLIENT_GRPC + ".channel.keep.alive";
      
      @GRpcConfigLabel
      public static final String GRPC_CHANNEL_KEEP_ALIVE_TIMEOUT = NACOS_CLIENT_GRPC + ".channel.keep.alive.timeout";
  
      @GRpcConfigLabel
      public static final String GRPC_CHANNEL_CAPABILITY_NEGOTIATION_TIMEOUT = NACOS_CLIENT_GRPC + ".channel.capability.negotiation.timeout";
  
      private static final Set<String> CONFIG_NAMES = new HashSet<>();
      
      @Documented
      @Target(ElementType.FIELD)
      @Retention(RetentionPolicy.RUNTIME)
      protected @interface GRpcConfigLabel {
      
      }
      
      static {
          Class clazz = GrpcConstants.class;
          Field[] declaredFields = clazz.getDeclaredFields();
          for (Field declaredField : declaredFields) {
              declaredField.setAccessible(true);
              if (declaredField.getType().equals(String.class) && null != declaredField.getAnnotation(
                      GRpcConfigLabel.class)) {
                  try {
                      CONFIG_NAMES.add((String) declaredField.get(null));
                  } catch (IllegalAccessException ignored) {
                  }
              }
          }
      }
      
      public static Set<String> getRpcParams() {
          return Collections.unmodifiableSet(CONFIG_NAMES);
      }
  }
  