// Copyright (C) 2009 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;
import static com.google.gerrit.server.schema.DataSourceProvider.Context.MULTI_USER;
import com.google.gerrit.httpd.HttpCanonicalWebUrlProvider;
import com.google.gerrit.httpd.WebModule;
import com.google.gerrit.lifecycle.LifecycleManager;
import com.google.gerrit.pgm.http.jetty.JettyEnv;
import com.google.gerrit.pgm.http.jetty.JettyModule;
import com.google.gerrit.pgm.http.jetty.ProjectQoSFilter;
import com.google.gerrit.pgm.util.ErrorLogFile;
import com.google.gerrit.pgm.util.LogFileCompressor;
import com.google.gerrit.pgm.util.RuntimeShutdown;
import com.google.gerrit.pgm.util.SiteProgram;
import com.google.gerrit.server.config.AuthConfigModule;
import com.google.gerrit.server.config.CanonicalWebUrlModule;
import com.google.gerrit.server.config.CanonicalWebUrlProvider;
import com.google.gerrit.server.config.GerritGlobalModule;
import com.google.gerrit.server.config.MasterNodeStartup;
import com.google.gerrit.sshd.SshModule;
import com.google.gerrit.sshd.commands.MasterCommandModule;
import com.google.gerrit.sshd.commands.SlaveCommandModule;
import com.google.inject.Injector;
import com.google.inject.Module;
import com.google.inject.Provider;
import org.kohsuke.args4j.Option;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.lang.Thread.UncaughtExceptionHandler;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
/** Run SSH daemon portions of Gerrit. */
public class Daemon extends SiteProgram {
private static final Logger log = LoggerFactory.getLogger(Daemon.class);
@Option(name = "--enable-httpd", usage = "Enable the internal HTTP daemon")
private Boolean httpd;
@Option(name = "--disable-httpd", usage = "Disable the internal HTTP daemon")
void setDisableHttpd(final boolean arg) {
httpd = false;
}
@Option(name = "--enable-sshd", usage = "Enable the internal SSH daemon")
private boolean sshd = true;
@Option(name = "--disable-sshd", usage = "Disable the internal SSH daemon")
void setDisableSshd(final boolean arg) {
sshd = false;
}
@Option(name = "--slave", usage = "Support fetch only; implies --disable-httpd")
private boolean slave;
@Option(name = "--console-log", usage = "Log to console (not $site_path/logs)")
private boolean consoleLog;
@Option(name = "--run-id", usage = "Cookie to store in $site_path/logs/gerrit.run")
private String runId;
private final LifecycleManager manager = new LifecycleManager();
private Injector dbInjector;
private Injector cfgInjector;
private Injector sysInjector;
private Injector sshInjector;
private Injector webInjector;
private Injector httpdInjector;
private File runFile;
@Override
public int run() throws Exception {
mustHaveValidSite();
Thread.setDefaultUncaughtExceptionHandler(new UncaughtExceptionHandler() {
@Override
public void uncaughtException(Thread t, Throwable e) {
log.error("Thread " + t.getName() + " threw exception", e);
}
});
if (runId != null) {
runFile = new File(new File(getSitePath(), "logs"), "gerrit.run");
}
if (httpd == null) {
httpd = !slave;
}
if (!httpd && !sshd) {
throw die("No services enabled, nothing to do");
}
if (slave && httpd) {
throw die("Cannot combine --slave and --enable-httpd");
}
if (httpd && !sshd) {
// TODO Support HTTP without SSH.
throw die("--enable-httpd currently requires --enable-sshd");
}
if (consoleLog) {
} else {
manager.add(ErrorLogFile.start(getSitePath()));
}
try {
dbInjector = createDbInjector(MULTI_USER);
cfgInjector = createCfgInjector();
sysInjector = createSysInjector();
manager.add(dbInjector, cfgInjector, sysInjector);
if (sshd) {
initSshd();
}
if (httpd) {
initHttpd();
}
manager.start();
RuntimeShutdown.add(new Runnable() {
public void run() {
log.info("caught shutdown, cleaning up");
if (runId != null) {
runFile.delete();
}
manager.stop();
}
});
log.info("Gerrit Code Review " + myVersion() + " ready");
if (runId != null) {
try {
runFile.createNewFile();
runFile.setReadable(true, false);
FileOutputStream out = new FileOutputStream(runFile);
try {
out.write((runId + "\n").getBytes("UTF-8"));
} finally {
out.close();
}
} catch (IOException err) {
log.warn("Cannot write --run-id to " + runFile, err);
}
}
RuntimeShutdown.waitFor();
return 0;
} catch (Throwable err) {
log.error("Unable to start daemon", err);
return 1;
}
}
private String myVersion() {
return com.google.gerrit.common.Version.getVersion();
}
private Injector createCfgInjector() {
final List<Module> modules = new ArrayList<Module>();
modules.add(new AuthConfigModule());
return dbInjector.createChildInjector(modules);
}
private Injector createSysInjector() {
final List<Module> modules = new ArrayList<Module>();
modules.add(new LogFileCompressor.Module());
modules.add(cfgInjector.getInstance(GerritGlobalModule.class));
if (httpd) {
modules.add(new CanonicalWebUrlModule() {
@Override
protected Class<? extends Provider<String>> provider() {
return HttpCanonicalWebUrlProvider.class;
}
});
} else {
modules.add(new CanonicalWebUrlModule() {
@Override
protected Class<? extends Provider<String>> provider() {
return CanonicalWebUrlProvider.class;
}
});
}
if (!slave) {
modules.add(new MasterNodeStartup());
}
return cfgInjector.createChildInjector(modules);
}
private void initSshd() {
sshInjector = createSshInjector();
manager.add(sshInjector);
}
private Injector createSshInjector() {
final List<Module> modules = new ArrayList<Module>();
modules.add(new SshModule());
if (slave) {
modules.add(new SlaveCommandModule());
} else {
modules.add(new MasterCommandModule());
}
return sysInjector.createChildInjector(modules);
}
private void initHttpd() {
webInjector = createWebInjector();
sysInjector.getInstance(HttpCanonicalWebUrlProvider.class)
.setHttpServletRequest(
webInjector.getProvider(HttpServletRequest.class));
httpdInjector = createHttpdInjector();
manager.add(webInjector, httpdInjector);
}
private Injector createWebInjector() {
final List<Module> modules = new ArrayList<Module>();
modules.add(sshInjector.getInstance(WebModule.class));
modules.add(sshInjector.getInstance(ProjectQoSFilter.Module.class));
return sysInjector.createChildInjector(modules);
}
private Injector createHttpdInjector() {
final List<Module> modules = new ArrayList<Module>();
modules.add(new JettyModule(new JettyEnv(webInjector)));
return webInjector.createChildInjector(modules);
}
}