/*
* Copyright 2013-2016 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.serviceregistry;
import java.util.concurrent.atomic.AtomicReference;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.aop.framework.Advised;
import org.springframework.aop.support.AopUtils;
import org.springframework.cloud.client.serviceregistry.Registration;
import org.springframework.cloud.netflix.eureka.CloudEurekaClient;
import org.springframework.cloud.netflix.eureka.CloudEurekaInstanceConfig;
import org.springframework.cloud.netflix.eureka.InstanceInfoFactory;
import org.springframework.context.ApplicationEventPublisher;
import org.springframework.util.Assert;
import com.netflix.appinfo.ApplicationInfoManager;
import com.netflix.appinfo.HealthCheckHandler;
import com.netflix.appinfo.InstanceInfo;
import com.netflix.discovery.EurekaClient;
import com.netflix.discovery.EurekaClientConfig;
/**
* @author Spencer Gibb
*/
public class EurekaRegistration implements Registration {
private static final Log log = LogFactory.getLog(EurekaRegistration.class);
private final EurekaClient eurekaClient;
private final AtomicReference<CloudEurekaClient> cloudEurekaClient = new AtomicReference<>();
private final CloudEurekaInstanceConfig instanceConfig;
private final ApplicationInfoManager applicationInfoManager;
private HealthCheckHandler healthCheckHandler;
private EurekaRegistration(CloudEurekaInstanceConfig instanceConfig, EurekaClient eurekaClient, ApplicationInfoManager applicationInfoManager, HealthCheckHandler healthCheckHandler) {
this.eurekaClient = eurekaClient;
this.instanceConfig = instanceConfig;
this.applicationInfoManager = applicationInfoManager;
this.healthCheckHandler = healthCheckHandler;
}
public static Builder builder(CloudEurekaInstanceConfig instanceConfig) {
return new Builder(instanceConfig);
}
public static class Builder {
private final CloudEurekaInstanceConfig instanceConfig;
private ApplicationInfoManager applicationInfoManager;
private EurekaClient eurekaClient;
private HealthCheckHandler healthCheckHandler;
private EurekaClientConfig clientConfig;
private ApplicationEventPublisher publisher;
Builder(CloudEurekaInstanceConfig instanceConfig) {
this.instanceConfig = instanceConfig;
}
public Builder with(ApplicationInfoManager applicationInfoManager) {
this.applicationInfoManager = applicationInfoManager;
return this;
}
public Builder with(EurekaClient eurekaClient) {
this.eurekaClient = eurekaClient;
return this;
}
public Builder with(HealthCheckHandler healthCheckHandler) {
this.healthCheckHandler = healthCheckHandler;
return this;
}
public Builder with(EurekaClientConfig clientConfig, ApplicationEventPublisher publisher) {
this.clientConfig = clientConfig;
this.publisher = publisher;
return this;
}
public EurekaRegistration build() {
Assert.notNull(instanceConfig, "instanceConfig may not be null");
if (this.applicationInfoManager == null) {
InstanceInfo instanceInfo = new InstanceInfoFactory().create(this.instanceConfig);
this.applicationInfoManager = new ApplicationInfoManager(this.instanceConfig, instanceInfo);
}
if (this.eurekaClient == null) {
Assert.notNull(this.clientConfig, "if eurekaClient is null, EurekaClientConfig may not be null");
Assert.notNull(this.publisher, "if eurekaClient is null, ApplicationEventPublisher may not be null");
this.eurekaClient = new CloudEurekaClient(this.applicationInfoManager, this.clientConfig, this.publisher);
}
return new EurekaRegistration(instanceConfig, eurekaClient, applicationInfoManager, healthCheckHandler);
}
}
@Override
public String getServiceId() {
return this.instanceConfig.getAppname();
}
public CloudEurekaClient getEurekaClient() {
if (this.cloudEurekaClient.get() == null) {
try {
this.cloudEurekaClient.compareAndSet(null, getTargetObject(eurekaClient, CloudEurekaClient.class));
} catch (Exception e) {
log.error("error getting CloudEurekaClient", e);
}
}
return this.cloudEurekaClient.get();
}
@SuppressWarnings({"unchecked"})
protected <T> T getTargetObject(Object proxy, Class<T> targetClass) throws Exception {
if (AopUtils.isJdkDynamicProxy(proxy)) {
return (T) ((Advised) proxy).getTargetSource().getTarget();
} else {
return (T) proxy; // expected to be cglib proxy then, which is simply a specialized class
}
}
public CloudEurekaInstanceConfig getInstanceConfig() {
return instanceConfig;
}
public ApplicationInfoManager getApplicationInfoManager() {
return applicationInfoManager;
}
public HealthCheckHandler getHealthCheckHandler() {
return healthCheckHandler;
}
public void setHealthCheckHandler(HealthCheckHandler healthCheckHandler) {
this.healthCheckHandler = healthCheckHandler;
}
public void setNonSecurePort(int port) {
this.instanceConfig.setNonSecurePort(port);
}
public int getNonSecurePort() {
return this.instanceConfig.getNonSecurePort();
}
}