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The Apache Cassandra Project develops a highly scalable second-generation distributed database, bringing together Dynamo's fully distributed design and Bigtable's ColumnFamily-based data model.
/*
* 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 receivingSummaries;
/** Immutable collection of sending summaries*/
public final Collection sendingSummaries;
/** Current session state */
public final StreamSession.State state;
private final Map receivingFiles = new ConcurrentHashMap<>();
private final Map sendingFiles = new ConcurrentHashMap<>();
public final String failureReason;
public SessionInfo(InetSocketAddress peer,
int sessionIndex,
InetSocketAddress connecting,
Collection receivingSummaries,
Collection 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 currentFiles = newProgress.direction == ProgressInfo.Direction.IN
? receivingFiles : sendingFiles;
currentFiles.put(newProgress.fileName, newProgress);
}
public Collection getReceivingFiles()
{
return receivingFiles.values();
}
public Collection 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 streams)
{
long total = 0;
for (ProgressInfo stream : streams)
total += stream.currentBytes;
return total;
}
private long getTotalFiles(Collection summaries)
{
long total = 0;
for (StreamSummary summary : summaries)
total += summary.files;
return total;
}
private long getTotalSizes(Collection summaries)
{
long total = 0;
for (StreamSummary summary : summaries)
total += summary.totalSize;
return total;
}
private long getTotalFilesCompleted(Collection files)
{
Iterable completed = Iterables.filter(files, new Predicate()
{
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;
}
}