Importing upstream Jetty jetty-9.2.1.v20140609

[gigi.git] / lib / jetty / org / eclipse / jetty / io / ClientConnectionFactory.java

diff --git a/lib/jetty/org/eclipse/jetty/io/ClientConnectionFactory.java b/lib/jetty/org/eclipse/jetty/io/ClientConnectionFactory.java
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+++ b/lib/jetty/org/eclipse/jetty/io/ClientConnectionFactory.java
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+//
+//  ========================================================================
+//  Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
+//  ------------------------------------------------------------------------
+//  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.
+//  ========================================================================
+//
+
+package org.eclipse.jetty.io;
+
+import java.io.IOException;
+import java.util.Map;
+
+import org.eclipse.jetty.util.log.Log;
+import org.eclipse.jetty.util.log.Logger;
+
+/**
+ * Factory for client-side {@link Connection} instances.
+ */
+public interface ClientConnectionFactory
+{
+    /**
+     *
+     * @param endPoint the {@link org.eclipse.jetty.io.EndPoint} to link the newly created connection to
+     * @param context the context data to create the connection
+     * @return a new {@link Connection}
+     * @throws IOException if the connection cannot be created
+     */
+    public Connection newConnection(EndPoint endPoint, Map<String, Object> context) throws IOException;
+
+    public static class Helper
+    {
+        private static Logger LOG = Log.getLogger(Helper.class);
+
+        private Helper()
+        {
+        }
+
+        /**
+         * Replaces the given {@code oldConnection} with the given {@code newConnection} on the
+         * {@link EndPoint} associated with {@code oldConnection}, performing connection lifecycle management.
+         * <p />
+         * The {@code oldConnection} will be closed by invoking {@link org.eclipse.jetty.io.Connection#onClose()}
+         * and the {@code newConnection} will be opened by invoking {@link org.eclipse.jetty.io.Connection#onOpen()}.
+         * @param oldConnection the old connection to replace
+         * @param newConnection the new connection replacement
+         */
+        public static void replaceConnection(Connection oldConnection, Connection newConnection)
+        {
+            close(oldConnection);
+            oldConnection.getEndPoint().setConnection(newConnection);
+            open(newConnection);
+        }
+
+        private static void open(Connection connection)
+        {
+            try
+            {
+                connection.onOpen();
+            }
+            catch (Throwable x)
+            {
+                LOG.debug(x);
+            }
+        }
+
+        private static void close(Connection connection)
+        {
+            try
+            {
+                connection.onClose();
+            }
+            catch (Throwable x)
+            {
+                LOG.debug(x);
+            }
+        }
+    }
+}