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Easy Redis Java client and Real-Time Data Platform. Valkey compatible. Sync/Async/RxJava3/Reactive API. Client side caching. Over 50 Redis based Java objects and services: JCache API, Apache Tomcat, Hibernate, Spring, Set, Multimap, SortedSet, Map, List, Queue, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Bloom filter, Scheduler, RPC
/*
* Copyright 2012 The Netty Project
*
* The Netty Project 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:
*
* https://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 io.netty.channel.oio;
import io.netty.channel.AbstractChannel;
import io.netty.channel.Channel;
import io.netty.channel.ChannelPromise;
import io.netty.channel.EventLoop;
import io.netty.channel.ThreadPerChannelEventLoop;
import java.net.SocketAddress;
/**
* Abstract base class for {@link Channel} implementations that use Old-Blocking-IO
*
* @deprecated use NIO / EPOLL / KQUEUE transport.
*/
@Deprecated
public abstract class AbstractOioChannel extends AbstractChannel {
protected static final int SO_TIMEOUT = 1000;
boolean readPending;
boolean readWhenInactive;
final Runnable readTask = new Runnable() {
@Override
public void run() {
doRead();
}
};
private final Runnable clearReadPendingRunnable = new Runnable() {
@Override
public void run() {
readPending = false;
}
};
/**
* @see AbstractChannel#AbstractChannel(Channel)
*/
protected AbstractOioChannel(Channel parent) {
super(parent);
}
@Override
protected AbstractUnsafe newUnsafe() {
return new DefaultOioUnsafe();
}
private final class DefaultOioUnsafe extends AbstractUnsafe {
@Override
public void connect(
final SocketAddress remoteAddress,
final SocketAddress localAddress, final ChannelPromise promise) {
if (!promise.setUncancellable() || !ensureOpen(promise)) {
return;
}
try {
boolean wasActive = isActive();
doConnect(remoteAddress, localAddress);
// Get the state as trySuccess() may trigger an ChannelFutureListener that will close the Channel.
// We still need to ensure we call fireChannelActive() in this case.
boolean active = isActive();
safeSetSuccess(promise);
if (!wasActive && active) {
pipeline().fireChannelActive();
}
} catch (Throwable t) {
safeSetFailure(promise, annotateConnectException(t, remoteAddress));
closeIfClosed();
}
}
}
@Override
protected boolean isCompatible(EventLoop loop) {
return loop instanceof ThreadPerChannelEventLoop;
}
/**
* Connect to the remote peer using the given localAddress if one is specified or {@code null} otherwise.
*/
protected abstract void doConnect(
SocketAddress remoteAddress, SocketAddress localAddress) throws Exception;
@Override
protected void doBeginRead() throws Exception {
if (readPending) {
return;
}
if (!isActive()) {
readWhenInactive = true;
return;
}
readPending = true;
eventLoop().execute(readTask);
}
protected abstract void doRead();
/**
* @deprecated No longer supported.
* No longer supported.
*/
@Deprecated
protected boolean isReadPending() {
return readPending;
}
/**
* @deprecated Use {@link #clearReadPending()} if appropriate instead.
* No longer supported.
*/
@Deprecated
protected void setReadPending(final boolean readPending) {
if (isRegistered()) {
EventLoop eventLoop = eventLoop();
if (eventLoop.inEventLoop()) {
this.readPending = readPending;
} else {
eventLoop.execute(new Runnable() {
@Override
public void run() {
AbstractOioChannel.this.readPending = readPending;
}
});
}
} else {
this.readPending = readPending;
}
}
/**
* Set read pending to {@code false}.
*/
protected final void clearReadPending() {
if (isRegistered()) {
EventLoop eventLoop = eventLoop();
if (eventLoop.inEventLoop()) {
readPending = false;
} else {
eventLoop.execute(clearReadPendingRunnable);
}
} else {
// Best effort if we are not registered yet clear readPending. This happens during channel initialization.
readPending = false;
}
}
}
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