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.io.Serializable;
  import java.net.InetSocketAddress;
  import java.util.Collection;
  import java.util.Map;
  import java.util.concurrent.ConcurrentHashMap;
  
  import com.google.common.base.Predicate;
  import com.google.common.collect.ImmutableSet;
  import com.google.common.collect.Iterables;
  
  import org.apache.cassandra.utils.FBUtilities;
  
  /**
   * Stream session info.
   */
  public final class SessionInfo implements Serializable
  {
      public final InetSocketAddress peer;
      public final int sessionIndex;
      public final InetSocketAddress connecting;
      /** Immutable collection of receiving summaries */
      public final Collection<StreamSummary> receivingSummaries;
      /** Immutable collection of sending summaries*/
      public final Collection<StreamSummary> sendingSummaries;
      /** Current session state */
      public final StreamSession.State state;
  
      private final Map<String, ProgressInfo> receivingFiles = new ConcurrentHashMap<>();
      private final Map<String, ProgressInfo> sendingFiles = new ConcurrentHashMap<>();
  
      public final String failureReason;
  
      public SessionInfo(InetSocketAddress peer,
                         int sessionIndex,
                         InetSocketAddress connecting,
                         Collection<StreamSummary> receivingSummaries,
                         Collection<StreamSummary> sendingSummaries,
                         StreamSession.State state,
                         String failureReason)
      {
          this.peer = peer;
          this.sessionIndex = sessionIndex;
          this.connecting = connecting;
          this.receivingSummaries = ImmutableSet.copyOf(receivingSummaries);
          this.sendingSummaries = ImmutableSet.copyOf(sendingSummaries);
          this.state = state;
          this.failureReason =  failureReason;
      }
  
      public SessionInfo(SessionInfo other)
      {
          this(other.peer, other.sessionIndex, other.connecting, other.receivingSummaries, other.sendingSummaries, other.state, other.failureReason);
      }
  
      public boolean isFailed()
      {
          return state == StreamSession.State.FAILED;
      }
  
      public boolean isAborted()
      {
          return state == StreamSession.State.ABORTED;
      }
  
      /**
       * Update progress of receiving/sending stream.
       *
       * @param newProgress new progress info
       */
      public void updateProgress(ProgressInfo newProgress)
      {
          assert peer.equals(newProgress.peer);
  
          Map<String, ProgressInfo> currentFiles = newProgress.direction == ProgressInfo.Direction.IN
                                                      ? receivingFiles : sendingFiles;
          currentFiles.put(newProgress.fileName, newProgress);
      }
  
      public Collection<ProgressInfo> getReceivingFiles()
      {
          return receivingFiles.values();
      }
  
      public Collection<ProgressInfo> getSendingFiles()
      {
          return sendingFiles.values();
      }
  
      /**
       * @return total number of files already received.
       */
      public long getTotalFilesReceived()
      {
          return getTotalFilesCompleted(receivingFiles.values());
      }
  
      /**
       * @return total number of files already sent.
       */
      public long getTotalFilesSent()
      {
          return getTotalFilesCompleted(sendingFiles.values());
      }
  
      /**
       * @return total size(in bytes) already received.
       */
      public long getTotalSizeReceived()
      {
          return getTotalSizeInProgress(receivingFiles.values());
      }
  
      /**
       * @return total size(in bytes) already sent.
       */
      public long getTotalSizeSent()
      {
          return getTotalSizeInProgress(sendingFiles.values());
      }
  
      /**
       * @return total number of files to receive in the session
       */
      public long getTotalFilesToReceive()
      {
          return getTotalFiles(receivingSummaries);
      }
  
      /**
       * @return total number of files to send in the session
       */
      public long getTotalFilesToSend()
      {
          return getTotalFiles(sendingSummaries);
      }
  
      /**
       * @return total size(in bytes) to receive in the session
       */
      public long getTotalSizeToReceive()
      {
          return getTotalSizes(receivingSummaries);
      }
  
      /**
       * @return total size(in bytes) to send in the session
       */
      public long getTotalSizeToSend()
      {
          return getTotalSizes(sendingSummaries);
      }
  
      private long getTotalSizeInProgress(Collection<ProgressInfo> streams)
      {
          long total = 0;
          for (ProgressInfo stream : streams)
              total += stream.currentBytes;
          return total;
      }
  
      private long getTotalFiles(Collection<StreamSummary> summaries)
      {
          long total = 0;
          for (StreamSummary summary : summaries)
              total += summary.files;
          return total;
      }
  
      private long getTotalSizes(Collection<StreamSummary> summaries)
      {
          long total = 0;
          for (StreamSummary summary : summaries)
              total += summary.totalSize;
          return total;
      }
  
      private long getTotalFilesCompleted(Collection<ProgressInfo> files)
      {
          Iterable<ProgressInfo> completed = Iterables.filter(files, new Predicate<ProgressInfo>()
          {
              public boolean apply(ProgressInfo input)
              {
                  return input.isCompleted();
              }
          });
          return Iterables.size(completed);
      }
  
      public SessionSummary createSummary()
      {
          return new SessionSummary(FBUtilities.getBroadcastAddressAndPort(), peer, receivingSummaries, sendingSummaries);
      }
  
      public String getFailureReason()
      {
          return failureReason;
      }
  }
  