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Merge pull request #5125 from eclipse/jetty-9.4.x-5122-WebSocketStats
Issue #5122 - Improve connection statistics for WebSocket
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jetty-io/src/main/java/org/eclipse/jetty/io/IncludeExcludeConnectionStatistics.java
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| @@ -0,0 +1,114 @@ | ||
| // | ||
| // ======================================================================== | ||
| // Copyright (c) 1995-2020 Mort Bay Consulting Pty Ltd and others. | ||
| // ------------------------------------------------------------------------ | ||
| // All rights reserved. This program and the accompanying materials | ||
| // are made available under the terms of the Eclipse Public License v1.0 | ||
| // and Apache License v2.0 which accompanies this distribution. | ||
| // | ||
| // The Eclipse Public License is available at | ||
| // http://www.eclipse.org/legal/epl-v10.html | ||
| // | ||
| // The Apache License v2.0 is available at | ||
| // http://www.opensource.org/licenses/apache2.0.php | ||
| // | ||
| // You may elect to redistribute this code under either of these licenses. | ||
| // ======================================================================== | ||
| // | ||
|
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| package org.eclipse.jetty.io; | ||
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| import java.util.AbstractSet; | ||
| import java.util.HashSet; | ||
| import java.util.Iterator; | ||
| import java.util.Set; | ||
| import java.util.function.Predicate; | ||
|
|
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| import org.eclipse.jetty.util.IncludeExcludeSet; | ||
|
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| public class IncludeExcludeConnectionStatistics extends ConnectionStatistics | ||
| { | ||
| private final IncludeExcludeSet<Class<? extends Connection>, Connection> _set = new IncludeExcludeSet<>(ConnectionSet.class); | ||
|
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| public void include(String className) throws ClassNotFoundException | ||
| { | ||
| _set.include(connectionForName(className)); | ||
| } | ||
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| public void include(Class<? extends Connection> clazz) | ||
| { | ||
| _set.include(clazz); | ||
| } | ||
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| public void exclude(String className) throws ClassNotFoundException | ||
| { | ||
| _set.exclude(connectionForName(className)); | ||
| } | ||
|
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| public void exclude(Class<? extends Connection> clazz) | ||
| { | ||
| _set.exclude(clazz); | ||
| } | ||
|
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| private Class<? extends Connection> connectionForName(String className) throws ClassNotFoundException | ||
| { | ||
| Class<?> aClass = Class.forName(className); | ||
| if (!Connection.class.isAssignableFrom(aClass)) | ||
| throw new IllegalArgumentException("Class is not a Connection"); | ||
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| @SuppressWarnings("unchecked") | ||
| Class<? extends Connection> connectionClass = (Class<? extends Connection>)aClass; | ||
| return connectionClass; | ||
| } | ||
|
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| @Override | ||
| public void onOpened(Connection connection) | ||
| { | ||
| if (_set.test(connection)) | ||
| super.onOpened(connection); | ||
| } | ||
|
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| @Override | ||
| public void onClosed(Connection connection) | ||
| { | ||
| if (_set.test(connection)) | ||
| super.onClosed(connection); | ||
| } | ||
|
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| public static class ConnectionSet extends AbstractSet<Class<? extends Connection>> implements Predicate<Connection> | ||
| { | ||
| private final Set<Class<? extends Connection>> set = new HashSet<>(); | ||
|
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| @Override | ||
| public boolean add(Class<? extends Connection> aClass) | ||
| { | ||
| return set.add(aClass); | ||
| } | ||
|
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| @Override | ||
| public boolean remove(Object o) | ||
| { | ||
| return set.remove(o); | ||
| } | ||
|
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| @Override | ||
| public Iterator<Class<? extends Connection>> iterator() | ||
| { | ||
| return set.iterator(); | ||
| } | ||
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| @Override | ||
| public int size() | ||
| { | ||
| return set.size(); | ||
| } | ||
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| @Override | ||
| public boolean test(Connection connection) | ||
| { | ||
| if (connection == null) | ||
| return false; | ||
| return set.stream().anyMatch(c -> c.isAssignableFrom(connection.getClass())); | ||
| } | ||
| } | ||
| } |
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