org.springframework.boot.web.embedded.undertow.AccessLogHttpHandlerFactory Maven / Gradle / Ivy
/*
* Copyright 2012-2020 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
*
* 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 org.springframework.boot.web.embedded.undertow;
import java.io.Closeable;
import java.io.File;
import java.io.IOException;
import java.util.concurrent.TimeUnit;
import io.undertow.Undertow;
import io.undertow.server.HttpHandler;
import io.undertow.server.handlers.accesslog.AccessLogHandler;
import io.undertow.server.handlers.accesslog.DefaultAccessLogReceiver;
import org.xnio.OptionMap;
import org.xnio.Options;
import org.xnio.Xnio;
import org.xnio.XnioWorker;
import org.springframework.util.Assert;
/**
* A {@link HttpHandlerFactory} for an {@link AccessLogHandler}.
*
* @author Andy Wilkinson
*/
class AccessLogHttpHandlerFactory implements HttpHandlerFactory {
private final File directory;
private final String pattern;
private final String prefix;
private final String suffix;
private final boolean rotate;
AccessLogHttpHandlerFactory(File directory, String pattern, String prefix, String suffix, boolean rotate) {
this.directory = directory;
this.pattern = pattern;
this.prefix = prefix;
this.suffix = suffix;
this.rotate = rotate;
}
@Override
public HttpHandler getHandler(HttpHandler next) {
try {
createAccessLogDirectoryIfNecessary();
XnioWorker worker = createWorker();
String baseName = (this.prefix != null) ? this.prefix : "access_log.";
String formatString = (this.pattern != null) ? this.pattern : "common";
return new ClosableAccessLogHandler(next, worker,
new DefaultAccessLogReceiver(worker, this.directory, baseName, this.suffix, this.rotate),
formatString);
}
catch (IOException ex) {
throw new IllegalStateException("Failed to create AccessLogHandler", ex);
}
}
private void createAccessLogDirectoryIfNecessary() {
Assert.state(this.directory != null, "Access log directory is not set");
if (!this.directory.isDirectory() && !this.directory.mkdirs()) {
throw new IllegalStateException("Failed to create access log directory '" + this.directory + "'");
}
}
private XnioWorker createWorker() throws IOException {
Xnio xnio = Xnio.getInstance(Undertow.class.getClassLoader());
return xnio.createWorker(OptionMap.builder().set(Options.THREAD_DAEMON, true).getMap());
}
/**
* {@link Closeable} variant of {@link AccessLogHandler}.
*/
private static class ClosableAccessLogHandler extends AccessLogHandler implements Closeable {
private final DefaultAccessLogReceiver accessLogReceiver;
private final XnioWorker worker;
ClosableAccessLogHandler(HttpHandler next, XnioWorker worker, DefaultAccessLogReceiver accessLogReceiver,
String formatString) {
super(next, accessLogReceiver, formatString, Undertow.class.getClassLoader());
this.worker = worker;
this.accessLogReceiver = accessLogReceiver;
}
@Override
public void close() throws IOException {
try {
this.accessLogReceiver.close();
this.worker.shutdown();
this.worker.awaitTermination(30, TimeUnit.SECONDS);
}
catch (IOException ex) {
throw new RuntimeException(ex);
}
catch (InterruptedException ex) {
Thread.currentThread().interrupt();
}
}
}
}