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;
  
  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;
  
  /**
   * RpcConstants.
   *
   * @author githubcheng2978.
   */
  public class RpcConstants {
      
      public static final String NACOS_CLIENT_RPC = "nacos.remote.client.rpc";
  
      public static final String NACOS_SERVER_RPC = "nacos.remote.server.rpc.tls";
  
      public static final String NACOS_PEER_RPC = "nacos.remote.peer.rpc.tls";
  
      @RpcConfigLabel
      public static final String RPC_CLIENT_TLS_ENABLE = NACOS_CLIENT_RPC + ClientSuffix.TLS_ENABLE;
      
      @RpcConfigLabel
      public static final String RPC_CLIENT_TLS_PROVIDER = NACOS_CLIENT_RPC + ClientSuffix.TLS_PROVIDER;
      
      @RpcConfigLabel
      public static final String RPC_CLIENT_MUTUAL_AUTH = NACOS_CLIENT_RPC + ClientSuffix.MUTUAL_AUTH;
      
      @RpcConfigLabel
      public static final String RPC_CLIENT_TLS_PROTOCOLS = NACOS_CLIENT_RPC + ClientSuffix.TLS_PROTOCOLS;
      
      @RpcConfigLabel
      public static final String RPC_CLIENT_TLS_CIPHERS = NACOS_CLIENT_RPC + ClientSuffix.TLS_CIPHERS;
      
      @RpcConfigLabel
      public static final String RPC_CLIENT_TLS_CERT_CHAIN_PATH = NACOS_CLIENT_RPC + ClientSuffix.TLS_CERT_CHAIN_PATH;
      
      @RpcConfigLabel
      public static final String RPC_CLIENT_TLS_CERT_KEY = NACOS_CLIENT_RPC + ClientSuffix.TLS_CERT_KEY;
      
      @RpcConfigLabel
      public static final String RPC_CLIENT_TLS_TRUST_PWD = NACOS_CLIENT_RPC + ClientSuffix.TLS_TRUST_PWD;
      
      @RpcConfigLabel
      public static final String RPC_CLIENT_TLS_TRUST_COLLECTION_CHAIN_PATH =
              NACOS_CLIENT_RPC + ClientSuffix.TLS_TRUST_COLLECTION_CHAIN_PATH;
      
      @RpcConfigLabel
      public static final String RPC_CLIENT_TLS_TRUST_ALL = NACOS_CLIENT_RPC + ClientSuffix.TLS_TRUST_ALL;
      
      private static final Set<String> CONFIG_NAMES = new HashSet<>();
      
      static {
          Class clazz = RpcConstants.class;
          Field[] declaredFields = clazz.getDeclaredFields();
          for (Field declaredField : declaredFields) {
              declaredField.setAccessible(true);
              if (declaredField.getType().equals(String.class) && null != declaredField.getAnnotation(
                      RpcConfigLabel.class)) {
                  try {
                      CONFIG_NAMES.add((String) declaredField.get(null));
                  } catch (IllegalAccessException ignored) {
                  }
              }
          }
      }
      
      /**
       * Enumeration of common suffixes for RPC configuration properties. Each enum constant represents a specific
       * configuration attribute suffix. This allows for the construction of complete configuration property keys.
       */
      public class ClientSuffix {
          
          /**
           * Suffix for 'tls.enable' configuration property.
           */
          public static final String TLS_ENABLE = ".tls.enable";
          
          /**
           * Suffix for 'tls.provider' configuration property.
           */
          public static final String TLS_PROVIDER = ".tls.provider";
          
          /**
           * Suffix for 'tls.mutualAuth' configuration property.
           */
          public static final String MUTUAL_AUTH = ".tls.mutualAuth";
          
          /**
           * Suffix for 'tls.protocols' configuration property.
           */
          public static final String TLS_PROTOCOLS = ".tls.protocols";
          
          /**
           * Suffix for 'tls.ciphers' configuration property.
           */
          public static final String TLS_CIPHERS = ".tls.ciphers";
          
          /**
           * Suffix for 'tls.certChainFile' configuration property.
           */
          public static final String TLS_CERT_CHAIN_PATH = ".tls.certChainFile";
          
          /**
           * Suffix for 'tls.certPrivateKey' configuration property.
           */
          public static final String TLS_CERT_KEY = ".tls.certPrivateKey";
          
          /**
           * Suffix for 'tls.certPrivateKeyPassword' configuration property.
           */
          public static final String TLS_TRUST_PWD = ".tls.certPrivateKeyPassword";
          
          /**
           * Suffix for 'tls.trustCollectionChainPath' configuration property.
           */
          public static final String TLS_TRUST_COLLECTION_CHAIN_PATH = ".tls.trustCollectionChainPath";
          
          /**
           * Suffix for 'tls.trustAll' configuration property.
           */
          public static final String TLS_TRUST_ALL = ".tls.trustAll";
      }
  
      /**
       * Enumeration of common suffixes for RPC configuration properties. Each enum constant represents a specific
       * configuration attribute suffix. This allows for the construction of complete configuration property keys.
       */
      public class ServerSuffix {
  
          /**
           * Suffix for 'tls.enable' configuration property.
           */
          public static final String TLS_ENABLE = ".enableTls";
  
          /**
           * Suffix for 'tls.provider' configuration property.
           */
          public static final String TLS_PROVIDER = ".sslProvider";
  
          /**
           * Suffix for 'tls.mutualAuth' configuration property.
           */
          public static final String MUTUAL_AUTH = ".mutualAuthEnable";
  
          /**
           * Suffix for 'tls.protocols' configuration property.
           */
          public static final String TLS_PROTOCOLS = ".protocols";
  
          /**
           * Suffix for 'tls.ciphers' configuration property.
           */
          public static final String TLS_CIPHERS = ".ciphers";
  
          /**
           * Suffix for 'tls.certChainFile' configuration property.
           */
          public static final String TLS_CERT_CHAIN_PATH = ".certChainFile";
  
          /**
           * Suffix for 'tls.certPrivateKey' configuration property.
           */
          public static final String TLS_CERT_KEY = ".certPrivateKey";
  
          /**
           * Suffix for 'tls.certPrivateKeyPassword' configuration property.
           */
          public static final String TLS_TRUST_PWD = ".certPrivateKeyPassword";
  
          /**
           * Suffix for 'tls.trustCollectionChainPath' configuration property.
           */
          public static final String TLS_TRUST_COLLECTION_CHAIN_PATH = ".trustCollectionCertFile";
  
          /**
           * Suffix for 'tls.trustAll' configuration property.
           */
          public static final String TLS_TRUST_ALL = ".trustAll";
  
          /**
           * Suffix for '.sslContextRefresher' configuration property.
           */
          public static final String SSL_CONTEXT_REFRESHER = ".sslContextRefresher";
  
          /**
           * Suffix for '.compatibility' configuration property.
           */
          public static final String COMPATIBILITY = ".compatibility";
      }
      
      @Documented
      @Target(ElementType.FIELD)
      @Retention(RetentionPolicy.RUNTIME)
      protected @interface RpcConfigLabel {
      
      }
      
      public static Set<String> getRpcParams() {
          return Collections.unmodifiableSet(CONFIG_NAMES);
      }
      
  }
  