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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2008-2014 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
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* If you wish your version of this file to be governed by only the CDDL or
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*/
package com.pdd.pop.ext.glassfish.grizzly;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.pdd.pop.ext.glassfish.grizzly.localization.LogMessages;
/**
*
* @author oleksiys
*/
public final class ProcessorExecutor {
private static final Logger LOGGER = Grizzly.logger(ProcessorExecutor.class);
public static void execute(final Connection connection,
final IOEvent ioEvent, final Processor processor,
final IOEventLifeCycleListener lifeCycleListener) {
execute(Context.create(connection, processor, ioEvent, lifeCycleListener));
}
@SuppressWarnings("unchecked")
public static void execute(Context context) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.log(Level.FINEST,
"executing connection ({0}). IOEvent={1} processor={2}",
new Object[]{context.getConnection(), context.getIoEvent(),
context.getProcessor()});
}
boolean isRerun;
ProcessorResult result;
try {
do {
result = context.getProcessor().process(context);
isRerun = (result.getStatus() == ProcessorResult.Status.RERUN);
if (isRerun) {
final Context newContext = (Context) result.getData();
rerun(context, newContext);
context = newContext;
}
} while (isRerun);
complete0(context, result);
} catch (Throwable t) {
if (LOGGER.isLoggable(Level.WARNING)) {
LOGGER.log(Level.WARNING,
LogMessages.WARNING_GRIZZLY_PROCESSOR_ERROR(
context.getConnection(), context.getIoEvent(),
context.getProcessor()),
t);
}
try {
error(context, t);
} catch (Exception ignored) {
}
}
}
public static void resume(final Context context) throws IOException {
execute(context);
}
private static void complete(final Context context, final Object data)
throws IOException {
final int sz = context.lifeCycleListeners.size();
final IOEventLifeCycleListener[] listeners = context.lifeCycleListeners.array();
try {
for (int i = 0; i < sz; i++) {
listeners[i].onComplete(context, data);
}
} finally {
context.recycle();
}
}
private static void leave(final Context context) throws IOException {
final int sz = context.lifeCycleListeners.size();
final IOEventLifeCycleListener[] listeners = context.lifeCycleListeners.array();
try {
for (int i = 0; i < sz; i++) {
listeners[i].onLeave(context);
}
} finally {
context.recycle();
}
}
private static void reregister(final Context context, final Object data)
throws IOException {
// "Context context" was suspended, so we reregister with its copy
// which is passed as "Object data"
final Context realContext = (Context) data;
final int sz = context.lifeCycleListeners.size();
final IOEventLifeCycleListener[] listeners = context.lifeCycleListeners.array();
try {
for (int i = 0; i < sz; i++) {
listeners[i].onReregister(realContext);
}
} finally {
realContext.recycle();
}
}
private static void rerun(final Context context, final Context newContext)
throws IOException {
final int sz = context.lifeCycleListeners.size();
final IOEventLifeCycleListener[] listeners = context.lifeCycleListeners.array();
for (int i = 0; i < sz; i++) {
listeners[i].onRerun(context, newContext);
}
}
private static void error(final Context context, final Object description)
throws IOException {
final int sz = context.lifeCycleListeners.size();
final IOEventLifeCycleListener[] listeners = context.lifeCycleListeners.array();
for (int i = 0; i < sz; i++) {
listeners[i].onError(context, description);
}
}
private static void notRun(final Context context) throws IOException {
final int sz = context.lifeCycleListeners.size();
final IOEventLifeCycleListener[] listeners = context.lifeCycleListeners.array();
try {
for (int i = 0; i < sz; i++) {
listeners[i].onNotRun(context);
}
} finally {
context.recycle();
}
}
static void complete(final Context context,
final ProcessorResult result) {
try {
complete0(context, result);
} catch (Throwable t) {
try {
error(context, t);
} catch (Exception ignored) {
}
}
}
private static void complete0(final Context context,
final ProcessorResult result)
throws IllegalStateException, IOException {
final ProcessorResult.Status status = result.getStatus();
switch (status) {
case COMPLETE:
complete(context, result.getData());
break;
case LEAVE:
leave(context);
break;
case TERMINATE:
// terminate(context);
break;
case REREGISTER:
reregister(context, result.getData());
break;
case ERROR:
error(context, result.getData());
break;
case NOT_RUN:
notRun(context);
break;
default:
throw new IllegalStateException();
}
}
}
