content: package org.apache.archiva.policies;
  
  /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.
   */
  
  import org.apache.archiva.common.ArchivaException;
  
  import java.util.Collections;
  import java.util.Map;
  
  /**
   * One or more exceptions occurred downloading from a remote repository during the proxy phase.
   */
  public class ProxyDownloadException
      extends ArchivaException
  {
      /**
       * A list of failures keyed by repository ID.
       */
      private final Map<String, Exception> failures;
  
      public ProxyDownloadException( String message, String repositoryId, Exception cause )
      {
          super( constructMessage( message, Collections.singletonMap( repositoryId, cause ) ), cause );
  
          failures = Collections.singletonMap( repositoryId, cause );
      }
  
      public ProxyDownloadException( String message, Map<String, Exception> failures )
      {
          super( constructMessage( message, failures ) );
  
          this.failures = failures;
      }
  
      private static String constructMessage( String message, Map<String, Exception> failures )
      {
          StringBuilder msg = new StringBuilder( message );
          msg.append( ":" );
          for ( Map.Entry<String, Exception> entry : failures.entrySet() )
          {
              msg.append( "\n\t" ).append( entry.getKey() ).append( ": " ).append( entry.getValue().getMessage() );
          }
          return msg.toString();
      }
  
      public Map<String, Exception> getFailures()
      {
          return failures;
      }
  }
  