/*
* Copyright 2013-2015 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
*
* 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.springframework.cloud.netflix.eureka.server;
import javax.servlet.ServletContext;
import com.netflix.appinfo.ApplicationInfoManager;
import com.netflix.appinfo.DataCenterInfo;
import com.netflix.appinfo.InstanceInfo;
import com.netflix.config.ConfigurationManager;
import com.netflix.discovery.EurekaClientConfig;
import com.netflix.discovery.converters.JsonXStream;
import com.netflix.discovery.converters.XmlXStream;
import com.netflix.eureka.EurekaServerConfig;
import com.netflix.eureka.EurekaServerContext;
import com.netflix.eureka.EurekaServerContextHolder;
import com.netflix.eureka.V1AwareInstanceInfoConverter;
import com.netflix.eureka.aws.AwsBinder;
import com.netflix.eureka.aws.AwsBinderDelegate;
import com.netflix.eureka.registry.PeerAwareInstanceRegistry;
import com.netflix.eureka.util.EurekaMonitors;
import com.thoughtworks.xstream.XStream;
import lombok.extern.apachecommons.CommonsLog;
/**
* @author Spencer Gibb
*/
@CommonsLog
public class EurekaServerBootstrap {
private static final String TEST = "test";
private static final String ARCHAIUS_DEPLOYMENT_ENVIRONMENT = "archaius.deployment.environment";
private static final String EUREKA_ENVIRONMENT = "eureka.environment";
private static final String DEFAULT = "default";
private static final String ARCHAIUS_DEPLOYMENT_DATACENTER = "archaius.deployment.datacenter";
private static final String EUREKA_DATACENTER = "eureka.datacenter";
protected EurekaServerConfig eurekaServerConfig;
protected ApplicationInfoManager applicationInfoManager;
protected EurekaClientConfig eurekaClientConfig;
protected PeerAwareInstanceRegistry registry;
protected volatile EurekaServerContext serverContext;
protected volatile AwsBinder awsBinder;
public EurekaServerBootstrap(ApplicationInfoManager applicationInfoManager,
EurekaClientConfig eurekaClientConfig, EurekaServerConfig eurekaServerConfig,
PeerAwareInstanceRegistry registry, EurekaServerContext serverContext) {
this.applicationInfoManager = applicationInfoManager;
this.eurekaClientConfig = eurekaClientConfig;
this.eurekaServerConfig = eurekaServerConfig;
this.registry = registry;
this.serverContext = serverContext;
}
public void contextInitialized(ServletContext context) {
try {
initEurekaEnvironment();
initEurekaServerContext();
context.setAttribute(EurekaServerContext.class.getName(), this.serverContext);
}
catch (Throwable e) {
log.error("Cannot bootstrap eureka server :", e);
throw new RuntimeException("Cannot bootstrap eureka server :", e);
}
}
public void contextDestroyed(ServletContext context) {
try {
log.info("Shutting down Eureka Server..");
context.removeAttribute(EurekaServerContext.class.getName());
destroyEurekaServerContext();
destroyEurekaEnvironment();
}
catch (Throwable e) {
log.error("Error shutting down eureka", e);
}
log.info("Eureka Service is now shutdown...");
}
protected void initEurekaEnvironment() throws Exception {
log.info("Setting the eureka configuration..");
String dataCenter = ConfigurationManager.getConfigInstance()
.getString(EUREKA_DATACENTER);
if (dataCenter == null) {
log.info(
"Eureka data center value eureka.datacenter is not set, defaulting to default");
ConfigurationManager.getConfigInstance()
.setProperty(ARCHAIUS_DEPLOYMENT_DATACENTER, DEFAULT);
}
else {
ConfigurationManager.getConfigInstance()
.setProperty(ARCHAIUS_DEPLOYMENT_DATACENTER, dataCenter);
}
String environment = ConfigurationManager.getConfigInstance()
.getString(EUREKA_ENVIRONMENT);
if (environment == null) {
ConfigurationManager.getConfigInstance()
.setProperty(ARCHAIUS_DEPLOYMENT_ENVIRONMENT, TEST);
log.info(
"Eureka environment value eureka.environment is not set, defaulting to test");
}
else {
ConfigurationManager.getConfigInstance()
.setProperty(ARCHAIUS_DEPLOYMENT_ENVIRONMENT, environment);
}
}
protected void initEurekaServerContext() throws Exception {
// For backward compatibility
JsonXStream.getInstance().registerConverter(new V1AwareInstanceInfoConverter(),
XStream.PRIORITY_VERY_HIGH);
XmlXStream.getInstance().registerConverter(new V1AwareInstanceInfoConverter(),
XStream.PRIORITY_VERY_HIGH);
if (isAws(this.applicationInfoManager.getInfo())) {
this.awsBinder = new AwsBinderDelegate(this.eurekaServerConfig,
this.eurekaClientConfig, this.registry, this.applicationInfoManager);
this.awsBinder.start();
}
EurekaServerContextHolder.initialize(this.serverContext);
log.info("Initialized server context");
// Copy registry from neighboring eureka node
int registryCount = this.registry.syncUp();
this.registry.openForTraffic(this.applicationInfoManager, registryCount);
// Register all monitoring statistics.
EurekaMonitors.registerAllStats();
}
/**
* Server context shutdown hook. Override for custom logic
*/
protected void destroyEurekaServerContext() throws Exception {
EurekaMonitors.shutdown();
if (this.awsBinder != null) {
this.awsBinder.shutdown();
}
if (this.serverContext != null) {
this.serverContext.shutdown();
}
}
/**
* Users can override to clean up the environment themselves.
*/
protected void destroyEurekaEnvironment() throws Exception {
}
protected boolean isAws(InstanceInfo selfInstanceInfo) {
boolean result = DataCenterInfo.Name.Amazon == selfInstanceInfo
.getDataCenterInfo().getName();
log.info("isAws returned " + result);
return result;
}
}