/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.atlas;
import org.apache.atlas.security.SecurityProperties;
import org.apache.atlas.setup.SetupException;
import org.apache.atlas.web.service.EmbeddedServer;
import org.apache.atlas.web.setup.AtlasSetup;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.GnuParser;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.apache.commons.configuration.Configuration;
import org.apache.commons.configuration.PropertiesConfiguration;
import org.apache.commons.lang.StringUtils;
import org.apache.hadoop.util.ShutdownHookManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Iterator;
/**
* Driver for running Metadata as a standalone server with embedded jetty server.
*/
public final class Atlas {
private static final Logger LOG = LoggerFactory.getLogger(Atlas.class);
private static final String APP_PATH = "app";
private static final String APP_PORT = "port";
private static final String ATLAS_HOME = "atlas.home";
private static final String ATLAS_DATA = "atlas.data";
private static final String ATLAS_LOG_DIR = "atlas.log.dir";
public static final String ATLAS_SERVER_HTTPS_PORT = "atlas.server.https.port";
public static final String ATLAS_SERVER_HTTP_PORT = "atlas.server.http.port";
public static final String ATLAS_SERVER_RUN_SETUP_KEY = "atlas.server.run.setup.on.start";
private static EmbeddedServer server;
static {
ShutdownHookManager.get().addShutdownHook(new Thread() {
@Override
public void run() {
try {
LOG.info("==> Shutdown of Atlas");
shutdown();
} catch (Exception e) {
LOG.error("Failed to shutdown", e);
} finally {
LOG.info("<== Shutdown of Atlas");
}
}
}, AtlasConstants.ATLAS_SHUTDOWN_HOOK_PRIORITY);
}
private static void shutdown() {
server.stop();
}
/**
* Prevent users from constructing this.
*/
private Atlas() {
}
protected static CommandLine parseArgs(String[] args) throws ParseException {
Options options = new Options();
Option opt;
opt = new Option(APP_PATH, true, "Application Path");
opt.setRequired(false);
options.addOption(opt);
opt = new Option(APP_PORT, true, "Application Port");
opt.setRequired(false);
options.addOption(opt);
return new GnuParser().parse(options, args);
}
public static void main(String[] args) throws Exception {
CommandLine cmd = parseArgs(args);
PropertiesConfiguration buildConfiguration = new PropertiesConfiguration("atlas-buildinfo.properties");
String appPath = "webapp/target/atlas-webapp-" + getProjectVersion(buildConfiguration);
if (cmd.hasOption(APP_PATH)) {
appPath = cmd.getOptionValue(APP_PATH);
}
setApplicationHome();
Configuration configuration = ApplicationProperties.get();
final String enableTLSFlag = configuration.getString(SecurityProperties.TLS_ENABLED);
final int appPort = getApplicationPort(cmd, enableTLSFlag, configuration);
System.setProperty(AtlasConstants.SYSTEM_PROPERTY_APP_PORT, String.valueOf(appPort));
final boolean enableTLS = isTLSEnabled(enableTLSFlag, appPort);
configuration.setProperty(SecurityProperties.TLS_ENABLED, String.valueOf(enableTLS));
runSetupIfRequired(configuration);
showStartupInfo(buildConfiguration, enableTLS, appPort);
server = EmbeddedServer.newServer(appPort, appPath, enableTLS);
server.start();
}
private static void runSetupIfRequired(Configuration configuration) throws SetupException {
boolean shouldRunSetup = configuration.getBoolean(ATLAS_SERVER_RUN_SETUP_KEY, false);
if (shouldRunSetup) {
LOG.warn("Running setup per configuration {}.", ATLAS_SERVER_RUN_SETUP_KEY);
AtlasSetup atlasSetup = new AtlasSetup();
try {
atlasSetup.run();
} catch (SetupException se) {
LOG.error("Failed running setup. Will not start the server.");
throw se;
}
LOG.warn("Finished running setup.");
} else {
LOG.info("Not running setup per configuration {}.", ATLAS_SERVER_RUN_SETUP_KEY);
}
}
private static void setApplicationHome() {
if (System.getProperty(ATLAS_HOME) == null) {
System.setProperty(ATLAS_HOME, "target");
}
if (System.getProperty(ATLAS_DATA) == null) {
System.setProperty(ATLAS_DATA, "target/data");
}
if (System.getProperty(ATLAS_LOG_DIR) == null) {
System.setProperty(ATLAS_LOG_DIR, "target/logs");
}
}
public static String getProjectVersion(PropertiesConfiguration buildConfiguration) {
return buildConfiguration.getString("project.version");
}
static int getApplicationPort(CommandLine cmd, String enableTLSFlag, Configuration configuration) {
String optionValue = cmd.hasOption(APP_PORT) ? cmd.getOptionValue(APP_PORT) : null;
final int appPort;
if (StringUtils.isNotEmpty(optionValue)) {
appPort = Integer.valueOf(optionValue);
} else {
// default : atlas.enableTLS is true
appPort = getPortValue(configuration, enableTLSFlag);
}
return appPort;
}
private static int getPortValue(Configuration configuration, String enableTLSFlag) {
int appPort;
assert configuration != null;
appPort = StringUtils.isEmpty(enableTLSFlag) || enableTLSFlag.equals("true") ?
configuration.getInt(ATLAS_SERVER_HTTPS_PORT, 21443) :
configuration.getInt(ATLAS_SERVER_HTTP_PORT, 21000);
return appPort;
}
private static boolean isTLSEnabled(String enableTLSFlag, int appPort) {
return Boolean.valueOf(StringUtils.isEmpty(enableTLSFlag) ?
System.getProperty(SecurityProperties.TLS_ENABLED, (appPort % 1000) == 443 ? "true" : "false") : enableTLSFlag);
}
private static void showStartupInfo(PropertiesConfiguration buildConfiguration, boolean enableTLS, int appPort) {
StringBuilder buffer = new StringBuilder();
buffer.append("\n############################################");
buffer.append("############################################");
buffer.append("\n Atlas Server (STARTUP)");
buffer.append("\n");
try {
final Iterator<String> keys = buildConfiguration.getKeys();
while (keys.hasNext()) {
String key = keys.next();
buffer.append('\n').append('\t').append(key).
append(":\t").append(buildConfiguration.getProperty(key));
}
} catch (Throwable e) {
buffer.append("*** Unable to get build info ***");
}
buffer.append("\n############################################");
buffer.append("############################################");
LOG.info(buffer.toString());
LOG.info(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
LOG.info("Server starting with TLS ? {} on port {}", enableTLS, appPort);
LOG.info("<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<");
}
}