/*
* 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 com.sun.jini.jeri.internal.runtime;
import java.io.IOException;
import java.rmi.server.Unreferenced;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import java.util.concurrent.ConcurrentMap;
import net.jini.jeri.RequestDispatcher;
import net.jini.jeri.ServerEndpoint.ListenEndpoint;
import net.jini.jeri.ServerEndpoint.ListenHandle;
import net.jini.security.Security;
/**
* A bound ListenEndpoint and the associated ListenHandle and
* RequestDispatcher.
*
* @since 2.2.0
* @author Peter Firmstone.
*/
class Binding {
private final ListenEndpoint listenEndpoint;
private final ObjectTable table;
private final ConcurrentMap listenPool;
private RequestDispatcher requestDispatcher;
private ListenHandle listenHandle;
boolean activated;
boolean closed;
// Changed to start at 1, so export in progress starts with construction.
private int exportsInProgress = 1;
Binding(final ListenEndpoint listenEndpoint, ObjectTable table,
ConcurrentMap listenPool) throws IOException {
super();
this.table = table;
this.listenPool = listenPool;
this.listenEndpoint = listenEndpoint;
activated = false;
closed = false;
}
synchronized boolean incrementExportInProgress() {
if (closed) {
return false;
}
exportsInProgress++;
return true;
}
synchronized void decrementExportInProgress() {
if (closed) {
throw new IllegalStateException("Cannot decrement closed Binding");
}
exportsInProgress--;
}
synchronized boolean activate() throws IOException {
if (closed) {
return false;
}
if (activated) {
return true;
}
requestDispatcher = table.createRequestDispatcher(new Unreferenced() {
public void unreferenced() {
checkReferenced();
}
});
try {
listenHandle = (ListenHandle) Security.doPrivileged(new PrivilegedExceptionAction() {
public Object run() throws IOException {
return listenEndpoint.listen(requestDispatcher);
}
});
} catch (PrivilegedActionException e) {
throw (IOException) e.getException();
}
activated = true;
return true;
}
synchronized void checkReferenced() {
if (exportsInProgress > 0 || table.isReferenced(requestDispatcher)) {
return;
}
listenPool.remove(new SameClassKey(listenEndpoint), this);
listenHandle.close();
closed = true;
}
synchronized RequestDispatcher getRequestDispatcher() {
return requestDispatcher;
}
synchronized ListenHandle getListenHandle() {
return listenHandle;
}
}