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Java example source code file (GenericListeningConnector.java)
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The GenericListeningConnector.java Java example source code
/*
* Copyright (c) 2003, 2004, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.tools.jdi;
import java.util.Map;
import java.util.HashMap;
import java.util.ArrayList;
import java.io.IOException;
import com.sun.jdi.Bootstrap;
import com.sun.jdi.VirtualMachine;
import com.sun.jdi.connect.*;
import com.sun.jdi.connect.spi.*;
/*
* A ListeningConnector to listen for connections from target VM
* using the configured transport service
*/
public class GenericListeningConnector
extends ConnectorImpl implements ListeningConnector
{
static final String ARG_ADDRESS = "address";
static final String ARG_TIMEOUT = "timeout";
Map<Map listenMap;
TransportService transportService;
Transport transport;
/**
* Initialize a new instance of this connector. The connector
* encapsulates a transport service, has a "timeout" connector argument,
* and optionally an "address" connector argument.
*/
private GenericListeningConnector(TransportService ts,
boolean addAddressArgument)
{
transportService = ts;
transport = new Transport() {
public String name() {
return transportService.name();
}
};
if (addAddressArgument) {
addStringArgument(
ARG_ADDRESS,
getString("generic_listening.address.label"),
getString("generic_listening.address"),
"",
false);
}
addIntegerArgument(
ARG_TIMEOUT,
getString("generic_listening.timeout.label"),
getString("generic_listening.timeout"),
"",
false,
0, Integer.MAX_VALUE);
listenMap = new HashMap<Map(10);
}
/**
* Initialize a new instance of this connector. This constructor is used
* when sub-classing - the resulting connector will a "timeout" connector
* argument.
*/
protected GenericListeningConnector(TransportService ts) {
this(ts, false);
}
/**
* Create an instance of this Connector. The resulting ListeningConnector will
* have "address" and "timeout" connector arguments.
*/
public static GenericListeningConnector create(TransportService ts) {
return new GenericListeningConnector(ts, true);
}
public String startListening(String address, Map<String,? extends Connector.Argument> args)
throws IOException, IllegalConnectorArgumentsException
{
TransportService.ListenKey listener = listenMap.get(args);
if (listener != null) {
throw new IllegalConnectorArgumentsException("Already listening",
new ArrayList<String>(args.keySet()));
}
listener = transportService.startListening(address);
listenMap.put(args, listener);
return listener.address();
}
public String
startListening(Map<String,? extends Connector.Argument> args)
throws IOException, IllegalConnectorArgumentsException
{
String address = argument(ARG_ADDRESS, args).value();
return startListening(address, args);
}
public void stopListening(Map<String,? extends Connector.Argument> args)
throws IOException, IllegalConnectorArgumentsException
{
TransportService.ListenKey listener = listenMap.get(args);
if (listener == null) {
throw new IllegalConnectorArgumentsException("Not listening",
new ArrayList<String>(args.keySet()));
}
transportService.stopListening(listener);
listenMap.remove(args);
}
public VirtualMachine
accept(Map<String,? extends Connector.Argument> args)
throws IOException, IllegalConnectorArgumentsException
{
String ts = argument(ARG_TIMEOUT, args).value();
int timeout = 0;
if (ts.length() > 0) {
timeout = Integer.decode(ts).intValue();
}
TransportService.ListenKey listener = listenMap.get(args);
Connection connection;
if (listener != null) {
connection = transportService.accept(listener, timeout, 0);
} else {
/*
* Keep compatibility with previous releases - if the
* debugger hasn't called startListening then we do a
* once-off accept
*/
startListening(args);
listener = listenMap.get(args);
assert listener != null;
connection = transportService.accept(listener, timeout, 0);
stopListening(args);
}
return Bootstrap.virtualMachineManager().createVirtualMachine(connection);
}
public boolean supportsMultipleConnections() {
return transportService.capabilities().supportsMultipleConnections();
}
public String name() {
return transport.name() + "Listen";
}
public String description() {
return transportService.description();
}
public Transport transport() {
return transport;
}
}
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