content: /*
   * 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.
   */
  package org.apache.cassandra.streaming;
  
  import java.util.Collections;
  import java.util.Map;
  import java.util.Set;
  
  import com.google.common.collect.ImmutableSet;
  
  import org.apache.cassandra.dht.Range;
  import org.apache.cassandra.dht.Token;
  import org.apache.cassandra.locator.InetAddressAndPort;
  import org.apache.cassandra.utils.TimeUUID;
  
  public abstract class StreamEvent
  {
      public static enum Type
      {
          STREAM_PREPARED,
          STREAM_COMPLETE,
          FILE_PROGRESS,
      }
  
      public final Type eventType;
      public final TimeUUID planId;
  
      protected StreamEvent(Type eventType, TimeUUID planId)
      {
          this.eventType = eventType;
          this.planId = planId;
      }
  
      public static class SessionCompleteEvent extends StreamEvent
      {
          public final InetAddressAndPort peer;
          public final boolean success;
          public final int sessionIndex;
          public final Set<StreamRequest> requests;
          public final StreamOperation streamOperation;
          public final Map<String, Set<Range<Token>>> transferredRangesPerKeyspace;
  
          public SessionCompleteEvent(StreamSession session)
          {
              super(Type.STREAM_COMPLETE, session.planId());
              this.peer = session.peer;
              this.success = session.isSuccess();
              this.sessionIndex = session.sessionIndex();
              this.requests = ImmutableSet.copyOf(session.requests);
              this.streamOperation = session.streamOperation();
              this.transferredRangesPerKeyspace = Collections.unmodifiableMap(session.transferredRangesPerKeyspace);
          }
      }
  
      public static class ProgressEvent extends StreamEvent
      {
          public final ProgressInfo progress;
  
          public ProgressEvent(TimeUUID planId, ProgressInfo progress)
          {
              super(Type.FILE_PROGRESS, planId);
              this.progress = progress;
          }
  
          @Override
          public String toString()
          {
              return "<ProgressEvent " + progress + ">";
          }
      }
  
      public static class SessionPreparedEvent extends StreamEvent
      {
          public final SessionInfo session;
          public final StreamSession.PrepareDirection prepareDirection;
  
          public SessionPreparedEvent(TimeUUID planId, SessionInfo session, StreamSession.PrepareDirection prepareDirection)
          {
              super(Type.STREAM_PREPARED, planId);
              this.session = session;
              this.prepareDirection = prepareDirection;
          }
      }
  }
  