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// Copyright (C) 2013 The Android Open Source Project
//
// 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 com.google.gerrit.pgm.http.jetty;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.TimeZone;
import org.apache.log4j.Layout;
import org.apache.log4j.spi.LoggingEvent;
public final class HttpLogLayout extends Layout {
private final SimpleDateFormat dateFormat;
private long lastTimeMillis;
private String lastTimeString;
public HttpLogLayout() {
final TimeZone tz = TimeZone.getDefault();
dateFormat = new SimpleDateFormat("dd/MMM/yyyy:HH:mm:ss Z");
dateFormat.setTimeZone(tz);
lastTimeMillis = System.currentTimeMillis();
lastTimeString = dateFormat.format(new Date(lastTimeMillis));
}
@Override
public String format(LoggingEvent event) {
final StringBuilder buf = new StringBuilder(128);
opt(buf, event, HttpLog.P_HOST);
buf.append(' ');
buf.append('-'); // identd on client system (never requested)
buf.append(' ');
opt(buf, event, HttpLog.P_USER);
buf.append(' ');
buf.append('[');
formatDate(event.getTimeStamp(), buf);
buf.append(']');
buf.append(' ');
buf.append('"');
buf.append(event.getMDC(HttpLog.P_METHOD));
buf.append(' ');
buf.append(event.getMDC(HttpLog.P_RESOURCE));
buf.append(' ');
buf.append(event.getMDC(HttpLog.P_PROTOCOL));
buf.append('"');
buf.append(' ');
buf.append(event.getMDC(HttpLog.P_STATUS));
buf.append(' ');
opt(buf, event, HttpLog.P_CONTENT_LENGTH);
buf.append(' ');
dq_opt(buf, event, HttpLog.P_REFERER);
buf.append(' ');
dq_opt(buf, event, HttpLog.P_USER_AGENT);
buf.append('\n');
return buf.toString();
}
private void opt(StringBuilder buf, LoggingEvent event, String key) {
String val = (String) event.getMDC(key);
if (val == null) {
buf.append('-');
} else {
buf.append(val);
}
}
private void dq_opt(StringBuilder buf, LoggingEvent event, String key) {
String val = (String) event.getMDC(key);
if (val == null) {
buf.append('-');
} else {
buf.append('"');
buf.append(val);
buf.append('"');
}
}
private void formatDate(long now, StringBuilder sbuf) {
final long rounded = now - (int) (now % 1000);
if (rounded != lastTimeMillis) {
synchronized (dateFormat) {
lastTimeMillis = rounded;
lastTimeString = dateFormat.format(new Date(lastTimeMillis));
sbuf.append(lastTimeString);
}
} else {
sbuf.append(lastTimeString);
}
}
@Override
public boolean ignoresThrowable() {
return true;
}
@Override
public void activateOptions() {}
}
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