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// Copyright (C) 2010 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 static com.google.gerrit.httpd.GitOverHttpServlet.GIT_COMMAND_STATUS_HEADER;
import com.google.common.base.Strings;
import com.google.gerrit.httpd.GetUserFilter;
import com.google.gerrit.httpd.restapi.LogRedactUtil;
import com.google.gerrit.server.config.GerritServerConfig;
import com.google.gerrit.server.util.SystemLog;
import com.google.gerrit.server.util.time.TimeUtil;
import com.google.inject.Inject;
import org.apache.log4j.AsyncAppender;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;
import org.apache.log4j.spi.LoggingEvent;
import org.eclipse.jetty.server.Request;
import org.eclipse.jetty.server.RequestLog;
import org.eclipse.jetty.server.Response;
import org.eclipse.jetty.util.component.AbstractLifeCycle;
import org.eclipse.jgit.lib.Config;
/** Writes the {@code httpd_log} file with per-request data. */
class HttpLog extends AbstractLifeCycle implements RequestLog {
private static final Logger log = Logger.getLogger(HttpLog.class);
private static final String LOG_NAME = "httpd_log";
private static final String JSON_SUFFIX = ".json";
interface HttpLogFactory {
HttpLog get();
}
protected static final String P_HOST = "Host";
protected static final String P_USER = "User";
protected static final String P_METHOD = "Method";
protected static final String P_RESOURCE = "Resource";
protected static final String P_PROTOCOL = "Version";
protected static final String P_STATUS = "Status";
protected static final String P_CONTENT_LENGTH = "Content-Length";
protected static final String P_LATENCY = "Latency";
protected static final String P_REFERER = "Referer";
protected static final String P_USER_AGENT = "User-Agent";
protected static final String P_COMMAND_STATUS = "Command-Status";
private final AsyncAppender async;
@Inject
HttpLog(SystemLog systemLog, @GerritServerConfig Config config) {
boolean json = config.getBoolean("log", "jsonLogging", false);
boolean text = config.getBoolean("log", "textLogging", true) || !json;
async = new AsyncAppender();
if (text) {
async.addAppender(systemLog.createAsyncAppender(LOG_NAME, new HttpLogLayout()));
}
if (json) {
async.addAppender(
systemLog.createAsyncAppender(LOG_NAME + JSON_SUFFIX, new HttpLogJsonLayout()));
}
}
@Override
protected void doStart() throws Exception {}
@Override
protected void doStop() throws Exception {
async.close();
}
@Override
public void log(Request req, Response rsp) {
final LoggingEvent event =
new LoggingEvent( //
Logger.class.getName(), // fqnOfCategoryClass
log, // logger
TimeUtil.nowMs(), // when
Level.INFO, // level
"", // message text
Thread.currentThread().getName(), // thread name
null, // exception information
null, // current NDC string
null, // caller location
null // MDC properties
);
String uri = req.getRequestURI();
if (!Strings.isNullOrEmpty(req.getQueryString())) {
uri += "?" + LogRedactUtil.redactQueryString(req.getQueryString());
}
String user = (String) req.getAttribute(GetUserFilter.USER_ATTR_KEY);
if (user != null) {
event.setProperty(P_USER, user);
}
set(event, P_HOST, req.getRemoteAddr());
set(event, P_METHOD, req.getMethod());
set(event, P_RESOURCE, uri);
set(event, P_PROTOCOL, req.getProtocol());
set(event, P_STATUS, rsp.getStatus());
set(event, P_CONTENT_LENGTH, rsp.getContentCount());
set(event, P_LATENCY, System.currentTimeMillis() - req.getTimeStamp());
set(event, P_REFERER, req.getHeader("Referer"));
set(event, P_USER_AGENT, req.getHeader("User-Agent"));
set(event, P_COMMAND_STATUS, rsp.getHeader(GIT_COMMAND_STATUS_HEADER));
async.append(event);
}
private static void set(LoggingEvent event, String key, String val) {
if (val != null && !val.isEmpty()) {
event.setProperty(key, val);
}
}
private static void set(LoggingEvent event, String key, long val) {
if (0 < val) {
event.setProperty(key, String.valueOf(val));
}
}
}
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