Spring Session - HttpSession with GemFire Client/Server (Quick Start)

<dependencies>
        <!-- ... -->

        <dependency>
                <groupId>org.springframework.session</groupId>
                <artifactId>spring-session-data-gemfire</artifactId>
                <version>1.3.4.RELEASE</version>
                <type>pom</type>
        </dependency>
        <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-web</artifactId>
                <version>4.3.9.RELEASE</version>
        </dependency>
</dependencies>

@EnableGemFireHttpSession(maxInactiveIntervalInSeconds = 30, poolName = "DEFAULT") (1)
public class ClientConfig {

        static final long DEFAULT_WAIT_DURATION = TimeUnit.SECONDS.toMillis(20);

        static final CountDownLatch latch = new CountDownLatch(1);

        static final String DEFAULT_GEMFIRE_LOG_LEVEL = "warning";

        @Bean
        static PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() {
                return new PropertySourcesPlaceholderConfigurer();
        }

        Properties gemfireProperties() { (2)
                Properties gemfireProperties = new Properties();
                gemfireProperties.setProperty("name", applicationName());
                gemfireProperties.setProperty("log-level", logLevel());
                return gemfireProperties;
        }

        String applicationName() {
                return "samples:httpsession-gemfire-clientserver:"
                        .concat(getClass().getSimpleName());
        }

        String logLevel() {
                return System.getProperty("sample.httpsession.gemfire.log-level",
                        DEFAULT_GEMFIRE_LOG_LEVEL);
        }

        @Bean
        ClientCacheFactoryBean gemfireCache(
                        @Value("${spring.session.data.gemfire.port:" + ServerConfig.SERVER_PORT + "}") int port) { (3)

                ClientCacheFactoryBean clientCacheFactory = new ClientCacheFactoryBean();

                clientCacheFactory.setClose(true);
                clientCacheFactory.setProperties(gemfireProperties());

                // GemFire Pool settings (4)
                clientCacheFactory.setKeepAlive(false);
                clientCacheFactory.setPingInterval(TimeUnit.SECONDS.toMillis(5));
                clientCacheFactory.setReadTimeout(2000); // 2 seconds
                clientCacheFactory.setRetryAttempts(1);
                clientCacheFactory.setSubscriptionEnabled(true);
                clientCacheFactory.setThreadLocalConnections(false);

                clientCacheFactory.setServers(Collections.singletonList(
                        newConnectionEndpoint(ServerConfig.SERVER_HOST, port)));

                return clientCacheFactory;
        }

        ConnectionEndpoint newConnectionEndpoint(String host, int port) {
                return new ConnectionEndpoint(host, port);
        }

        @Bean
        BeanPostProcessor gemfireCacheServerReadyBeanPostProcessor() { (5)
                return new BeanPostProcessor() {

                        public Object postProcessBeforeInitialization(Object bean, String beanName)
                                throws BeansException {

                                if ("gemfirePool".equals(beanName)) {
                                        ClientMembership.registerClientMembershipListener(
                                                new ClientMembershipListenerAdapter() {
                                                        @Override
                                                        public void memberJoined(ClientMembershipEvent event) {
                                                                latch.countDown();
                                                        }
                                                });
                                }

                                return bean;
                        }

                        public Object postProcessAfterInitialization(Object bean, String beanName)
                                throws BeansException {

                                if (bean instanceof Pool && "gemfirePool".equals(beanName)) {
                                        try {
                                                Assert.state(latch.await(DEFAULT_WAIT_DURATION, TimeUnit.MILLISECONDS),
                                                        String.format("GemFire Cache Server failed to start on host [%1$s] and port [%2$d]",
                                                                ServerConfig.SERVER_HOST, ServerConfig.SERVER_PORT));
                                        }
                                        catch (InterruptedException e) {
                                                Thread.currentThread().interrupt();
                                        }
                                }

                                return bean;
                        }
                };
        }

public class Initializer extends AbstractHttpSessionApplicationInitializer { (1)

        public Initializer() {
                super(ClientConfig.class); (2)
        }
}