org.springframework.boot.autoconfigure.condition.SearchStrategy#CURRENT源码实例Demo

@Bean(destroyMethod = "shutdown")
@ConditionalOnMissingBean(value = EurekaClient.class,
		search = SearchStrategy.CURRENT)
public EurekaClient eurekaClient(ApplicationInfoManager manager,
		EurekaClientConfig config, ApplicationContext context) {
	return new CloudEurekaClient(manager, config, null, context) {
		@Override
		public synchronized void shutdown() {
			CountDownLatch latch = countDownLatch();
			if (latch.getCount() == 1) {
				latch.countDown();
			}
			super.shutdown();
		}
	};
}
 

@Bean
@ConditionalOnClass(name = "com.sun.jersey.api.client.filter.ClientFilter")
@ConditionalOnMissingBean(value = AbstractDiscoveryClientOptionalArgs.class,
		search = SearchStrategy.CURRENT)
public MutableDiscoveryClientOptionalArgs discoveryClientOptionalArgs() {
	logger.info("Eureka Client uses Jersey");
	return new MutableDiscoveryClientOptionalArgs();
}
 

@Bean
@ConditionalOnMissingBean(value = EurekaInstanceConfig.class, search = SearchStrategy.CURRENT)
public EurekaInstanceConfigBean eurekaInstanceConfigBean(
        InetUtils inetUtils, ManagementMetadataProvider managementMetadataProvider) {
    EurekaInstanceConfigBean instance = new EurekaClientAutoConfiguration(env)
            .eurekaInstanceConfigBean(inetUtils, managementMetadataProvider);

    String brpcPort = env.getProperty(ENV_PORT_KEY);
    if (StringUtils.isNoneBlank(brpcPort)) {
        instance.getMetadataMap().put(META_DATA_PORT_KEY, brpcPort);
    }
    return instance;
}
 

@Bean
@ConditionalOnClass(name = "org.springframework.web.client.RestTemplate")
@ConditionalOnMissingClass("com.sun.jersey.api.client.filter.ClientFilter")
@ConditionalOnMissingBean(value = { AbstractDiscoveryClientOptionalArgs.class },
		search = SearchStrategy.CURRENT)
@ConditionalOnProperty(prefix = "eureka.client", name = "webclient.enabled",
		matchIfMissing = true, havingValue = "false")
public RestTemplateDiscoveryClientOptionalArgs restTemplateDiscoveryClientOptionalArgs() {
	logger.info("Eureka HTTP Client uses RestTemplate.");
	return new RestTemplateDiscoveryClientOptionalArgs();
}
 

@Bean
// This conditional is intentionally not in an autoconfig (usually a bad idea) because
// it is used to detect a BindingService in the parent context (which we know
// already exists).
@ConditionalOnMissingBean(search = SearchStrategy.CURRENT)
public BindingService bindingService(
		BindingServiceProperties bindingServiceProperties,
		BinderFactory binderFactory, TaskScheduler taskScheduler) {

	return new BindingService(bindingServiceProperties, binderFactory, taskScheduler);
}
 

@Bean
@ConditionalOnMissingBean(search = SearchStrategy.CURRENT)
public ConfigurationPropertiesRebinder configurationPropertiesRebinder(
		ConfigurationPropertiesBeans beans) {
	ConfigurationPropertiesRebinder rebinder = new ConfigurationPropertiesRebinder(
			beans);
	return rebinder;
}
 

@Bean(destroyMethod = "shutdown")
@ConditionalOnMissingBean(value = EurekaClient.class,
		search = SearchStrategy.CURRENT)
public EurekaClient eurekaClient(ApplicationInfoManager manager,
		EurekaClientConfig config) {
	return new CloudEurekaClient(manager, config, this.optionalArgs,
			this.context);
}
 

@Bean
@ConditionalOnMissingBean(value = ApplicationInfoManager.class,
		search = SearchStrategy.CURRENT)
public ApplicationInfoManager eurekaApplicationInfoManager(
		EurekaInstanceConfig config) {
	InstanceInfo instanceInfo = new InstanceInfoFactory().create(config);
	return new ApplicationInfoManager(config, instanceInfo);
}
 

@Bean
@ConditionalOnMissingBean(value = DiscoveryClientOptionalArgs.class, search = SearchStrategy.CURRENT)
public DiscoveryClientOptionalArgs discoveryClientOptionalArgs() {
    return new DiscoveryClientOptionalArgs();
}
 

@Bean
@ConditionalOnMissingBean(value = ErrorAttributes.class, search = SearchStrategy.CURRENT)
public DefaultErrorAttributes errorAttributes() {
	return new BladeErrorAttributes();
}
 

@Bean
@ConditionalOnMissingBean(value = ErrorController.class, search = SearchStrategy.CURRENT)
public BasicErrorController basicErrorController(ErrorAttributes errorAttributes) {
	return new BladeErrorController(errorAttributes, serverProperties.getError());
}
 

@Bean
@ConditionalOnMissingBean(value = ErrorController.class, search = SearchStrategy.CURRENT)
public BasicErrorController jsonapiErrorController(ErrorAttributes errorAttributes) {
	return new CrnkErrorController(errorAttributes, this.serverProperties.getError(), this.errorViewResolvers);
}
 

@Bean
@RefreshScope
@ConditionalOnMissingBean(value = MemcachedCacheManager.class, search = SearchStrategy.CURRENT)
public MemcachedCacheManager cacheManager(MemcachedCacheProperties properties) throws IOException {
    return new XMemcachedCacheManagerFactory(properties).create();
}
 

@Bean
@ConditionalOnMissingBean(value = MemcachedCacheManager.class, search = SearchStrategy.CURRENT)
public MemcachedCacheManager cacheManager(MemcachedCacheProperties properties) throws IOException {
    return new XMemcachedCacheManagerFactory(properties).create();
}
 

@Bean
@RefreshScope
@ConditionalOnMissingBean(value = MemcachedCacheManager.class, search = SearchStrategy.CURRENT)
public MemcachedCacheManager cacheManager(MemcachedCacheProperties properties) throws IOException {
    return new AppEngineMemcachedCacheManagerFactory(properties).create();
}
 

@Bean
@ConditionalOnMissingBean(value = MemcachedCacheManager.class, search = SearchStrategy.CURRENT)
public MemcachedCacheManager cacheManager(MemcachedCacheProperties properties) throws IOException {
    return new AppEngineMemcachedCacheManagerFactory(properties).create();
}
 

@Bean
@ConditionalOnMissingBean(search = SearchStrategy.CURRENT)
public MultipleJGitEnvironmentProperties multipleJGitEnvironmentProperties() {
	return new MultipleJGitEnvironmentProperties();
}
 

@Bean
@ConditionalOnMissingBean(search = SearchStrategy.CURRENT)
public static ConfigurationPropertiesBeans configurationPropertiesBeans() {
	return new ConfigurationPropertiesBeans();
}
 

@Bean
@ConditionalOnMissingBean(value = EurekaInstanceConfig.class,
		search = SearchStrategy.CURRENT)
public EurekaInstanceConfigBean eurekaInstanceConfigBean(InetUtils inetUtils,
		ManagementMetadataProvider managementMetadataProvider) {
	String hostname = getProperty("eureka.instance.hostname");
	boolean preferIpAddress = Boolean
			.parseBoolean(getProperty("eureka.instance.prefer-ip-address"));
	String ipAddress = getProperty("eureka.instance.ip-address");
	boolean isSecurePortEnabled = Boolean
			.parseBoolean(getProperty("eureka.instance.secure-port-enabled"));

	String serverContextPath = env.getProperty("server.servlet.context-path", "/");
	int serverPort = Integer.parseInt(
			env.getProperty("server.port", env.getProperty("port", "8080")));

	Integer managementPort = env.getProperty("management.server.port", Integer.class);
	String managementContextPath = env
			.getProperty("management.server.servlet.context-path");
	Integer jmxPort = env.getProperty("com.sun.management.jmxremote.port",
			Integer.class);
	EurekaInstanceConfigBean instance = new EurekaInstanceConfigBean(inetUtils);

	instance.setNonSecurePort(serverPort);
	instance.setInstanceId(getDefaultInstanceId(env));
	instance.setPreferIpAddress(preferIpAddress);
	instance.setSecurePortEnabled(isSecurePortEnabled);
	if (StringUtils.hasText(ipAddress)) {
		instance.setIpAddress(ipAddress);
	}

	if (isSecurePortEnabled) {
		instance.setSecurePort(serverPort);
	}

	if (StringUtils.hasText(hostname)) {
		instance.setHostname(hostname);
	}
	String statusPageUrlPath = getProperty("eureka.instance.status-page-url-path");
	String healthCheckUrlPath = getProperty("eureka.instance.health-check-url-path");

	if (StringUtils.hasText(statusPageUrlPath)) {
		instance.setStatusPageUrlPath(statusPageUrlPath);
	}
	if (StringUtils.hasText(healthCheckUrlPath)) {
		instance.setHealthCheckUrlPath(healthCheckUrlPath);
	}

	ManagementMetadata metadata = managementMetadataProvider.get(instance, serverPort,
			serverContextPath, managementContextPath, managementPort);

	if (metadata != null) {
		instance.setStatusPageUrl(metadata.getStatusPageUrl());
		instance.setHealthCheckUrl(metadata.getHealthCheckUrl());
		if (instance.isSecurePortEnabled()) {
			instance.setSecureHealthCheckUrl(metadata.getSecureHealthCheckUrl());
		}
		Map<String, String> metadataMap = instance.getMetadataMap();
		metadataMap.computeIfAbsent("management.port",
				k -> String.valueOf(metadata.getManagementPort()));
	}
	else {
		// without the metadata the status and health check URLs will not be set
		// and the status page and health check url paths will not include the
		// context path so set them here
		if (StringUtils.hasText(managementContextPath)) {
			instance.setHealthCheckUrlPath(
					managementContextPath + instance.getHealthCheckUrlPath());
			instance.setStatusPageUrlPath(
					managementContextPath + instance.getStatusPageUrlPath());
		}
	}

	setupJmxPort(instance, jmxPort);
	return instance;
}
 

@Bean
@ConditionalOnMissingBean(value = EurekaClientConfig.class,
		search = SearchStrategy.CURRENT)
public EurekaClientConfigBean eurekaClientConfigBean() {
	return new EurekaClientConfigBean();
}