/*
* Copyright 2013-2017 the original author or authors.
*
* Licensed 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 org.glowroot.ui;
import java.io.IOException;
import java.nio.channels.ClosedChannelException;
import com.google.common.collect.ImmutableSet;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import io.netty.util.concurrent.GenericFutureListener;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
class HttpServices {
private static final Logger logger = LoggerFactory.getLogger(HttpServices.class);
private static final ImmutableSet<String> BROWSER_DISCONNECT_MESSAGES =
ImmutableSet.of("An existing connection was forcibly closed by the remote host",
"An established connection was aborted by the software in your host machine",
"Connection reset by peer");
private HttpServices() {}
@SuppressWarnings("argument.type.incompatible")
static void addErrorListener(ChannelFuture future) {
future.addListener(new GenericFutureListener<ChannelFuture>() {
@Override
public void operationComplete(ChannelFuture future) throws Exception {
Throwable cause = future.cause();
if (cause == null) {
return;
}
if (shouldLogException(cause)) {
logger.error(cause.getMessage(), cause);
}
future.channel().close();
}
});
}
@SuppressWarnings("argument.type.incompatible")
static void addCloseListener(ChannelFuture future) {
future.addListener(ChannelFutureListener.CLOSE);
}
static boolean shouldLogException(Throwable t) {
if (t instanceof InterruptedException) {
// ignore, probably just termination
logger.debug(t.getMessage(), t);
return false;
}
if (t instanceof IOException && BROWSER_DISCONNECT_MESSAGES.contains(t.getMessage())) {
// ignore, just a browser disconnect
logger.debug(t.getMessage(), t);
return false;
}
if (t instanceof ClosedChannelException) {
// ignore, just a browser disconnect
logger.debug(t.getMessage(), t);
return false;
}
return true;
}
}