content: /*
   * Copyright 1999-2018 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.csp.sentinel.adapter.dubbo;
  
  import com.alibaba.csp.sentinel.adapter.dubbo.config.DubboAdapterGlobalConfig;
  import com.alibaba.csp.sentinel.util.StringUtil;
  import org.apache.dubbo.rpc.Invocation;
  import org.apache.dubbo.rpc.Invoker;
  
  /**
   * @author Eric Zhao
   */
  public final class DubboUtils {
  
      public static final String SENTINEL_DUBBO_APPLICATION_KEY = "dubboApplication";
  
      public static String getApplication(Invocation invocation, String defaultValue) {
          if (invocation == null || invocation.getAttachments() == null) {
              throw new IllegalArgumentException("Bad invocation instance");
          }
          return invocation.getAttachment(SENTINEL_DUBBO_APPLICATION_KEY, defaultValue);
      }
  
      public static String getMethodResourceName(Invoker<?> invoker, Invocation invocation){
          return getMethodResourceName(invoker, invocation, false);
      }
  
      public static String getMethodResourceName(Invoker<?> invoker, Invocation invocation, Boolean useGroupAndVersion) {
          StringBuilder buf = new StringBuilder(64);
          String interfaceResource = useGroupAndVersion ? invoker.getUrl().getColonSeparatedKey() : invoker.getInterface().getName();
          buf.append(interfaceResource)
              .append(":")
              .append(invocation.getMethodName())
              .append("(");
          boolean isFirst = true;
          for (Class<?> clazz : invocation.getParameterTypes()) {
              if (!isFirst) {
                  buf.append(",");
              }
              buf.append(clazz.getName());
              isFirst = false;
          }
          buf.append(")");
          return buf.toString();
      }
  
      public static String getMethodResourceName(Invoker<?> invoker, Invocation invocation, String prefix) {
          if (StringUtil.isNotBlank(prefix)) {
              return new StringBuilder(64)
                      .append(prefix)
                      .append(getMethodResourceName(invoker, invocation, DubboAdapterGlobalConfig.getDubboInterfaceGroupAndVersionEnabled()))
                      .toString();
          } else {
              return getMethodResourceName(invoker, invocation, DubboAdapterGlobalConfig.getDubboInterfaceGroupAndVersionEnabled());
          }
      }
  
  
      public static String getInterfaceName(Invoker invoker) {
          return getInterfaceName(invoker, false);
      }
  
      public static String getInterfaceName(Invoker<?> invoker, Boolean useGroupAndVersion) {
          StringBuilder buf = new StringBuilder(64);
          return useGroupAndVersion ? invoker.getUrl().getColonSeparatedKey() : invoker.getInterface().getName();
      }
  
      public static String getInterfaceName(Invoker<?> invoker, String prefix) {
          if (StringUtil.isNotBlank(prefix)) {
              return new StringBuilder(64)
                      .append(prefix)
                      .append(getInterfaceName(invoker, DubboAdapterGlobalConfig.getDubboInterfaceGroupAndVersionEnabled()))
                      .toString();
          } else {
              return getInterfaceName(invoker, DubboAdapterGlobalConfig.getDubboInterfaceGroupAndVersionEnabled());
          }
      }
  
  
      private DubboUtils() {
      }
  }
  