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Fixup documentation and samples.

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This commit is contained in:
John Blum
2017-07-26 01:35:27 -07:00
parent e3cc3e7388
commit 04168ef1b3
28 changed files with 1110 additions and 1291 deletions
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263
samples/boot/gemfire/src/main/java/sample/client/Application.java
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@@ -16,9 +16,6 @@
package sample.client;
import static java.util.Arrays.stream;
import static org.springframework.data.gemfire.util.ArrayUtils.nullSafeArray;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.Collections;
@@ -26,44 +23,21 @@ import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import java.util.Optional;
import java.util.Properties;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicReference;
import javax.servlet.http.HttpSession;
import org.apache.geode.cache.Region;
import org.apache.geode.cache.client.ClientCache;
import org.apache.geode.cache.client.ClientRegionShortcut;
import org.apache.geode.cache.client.Pool;
import org.apache.geode.cache.client.PoolManager;
import org.apache.geode.cache.client.internal.PoolImpl;
import org.apache.geode.management.membership.ClientMembership;
import org.apache.geode.management.membership.ClientMembershipEvent;
import org.apache.geode.management.membership.ClientMembershipListenerAdapter;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Profile;
import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;
import org.springframework.data.gemfire.client.ClientCacheFactoryBean;
import org.springframework.data.gemfire.client.ClientRegionFactoryBean;
import org.springframework.data.gemfire.config.xml.GemfireConstants;
import org.springframework.data.gemfire.support.ConnectionEndpoint;
import org.springframework.data.gemfire.config.annotation.ClientCacheApplication;
import org.springframework.data.gemfire.config.annotation.ClientCacheConfigurer;
import org.springframework.data.gemfire.util.CollectionUtils;
import org.springframework.session.data.gemfire.config.annotation.web.http.EnableGemFireHttpSession;
import org.springframework.session.data.gemfire.config.annotation.web.http.GemFireHttpSessionConfiguration;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RequestMapping;
@@ -88,18 +62,10 @@ import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
* @since 1.2.1
*/
// tag::class[]
@SpringBootApplication
@Controller
@EnableGemFireHttpSession(poolName = "DEFAULT")// <1>
@SuppressWarnings("unused")
@SpringBootApplication // <1>
@Controller // <2>
public class Application {
static final long DEFAULT_TIMEOUT = TimeUnit.SECONDS.toMillis(30);
static final CountDownLatch LATCH = new CountDownLatch(1);
static final String DEFAULT_GEMFIRE_LOG_LEVEL = "config";
static final String GEMFIRE_DEFAULT_POOL_NAME = "DEFAULT";
static final String INDEX_TEMPLATE_VIEW_NAME = "index";
static final String PING_RESPONSE = "PONG";
static final String REQUEST_COUNT_ATTRIBUTE_NAME = "requestCount";
@@ -108,197 +74,32 @@ public class Application {
SpringApplication.run(Application.class, args);
}
@Configuration
static class GemFireConfiguration {
@ClientCacheApplication(name = "SpringSessionDataGeodeClientBootSample", logLevel = "warning",
pingInterval = 5000L, readTimeout = 15000, retryAttempts = 1, subscriptionEnabled = true) // <3>
@EnableGemFireHttpSession(poolName = "DEFAULT") // <4>
static class ClientCacheConfiguration extends IntegrationTestConfiguration {
// Required to resolve property placeholders in Spring @Value annotations.
@Bean
static PropertySourcesPlaceholderConfigurer propertyPlaceholderConfigurer() {
return new PropertySourcesPlaceholderConfigurer();
}
Properties gemfireProperties() { // <2>
Properties gemfireProperties = new Properties();
gemfireProperties.setProperty("name", applicationName());
//gemfireProperties.setProperty("log-file", "gemfire-client.log");
gemfireProperties.setProperty("log-level", logLevel());
return gemfireProperties;
}
String applicationName() {
return "spring-session-data-gemfire-boot-sample.".concat(getClass().getSimpleName());
}
String logLevel() {
return System.getProperty("spring-session-data-gemfire.log.level", DEFAULT_GEMFIRE_LOG_LEVEL);
}
@Bean
ClientCacheFactoryBean gemfireCache(
@Value("${spring-session-data-gemfire.cache.server.host:localhost}") String host,
@Value("${spring-session-data-gemfire.cache.server.port:40404}") int port) { // <3>
ClientCacheConfigurer clientCacheServerPortConfigurer(
@Value("${spring.session.data.geode.cache.server.port:40404}") int port) { // <5>
ClientCacheFactoryBean gemfireCache = new ClientCacheFactoryBean();
gemfireCache.setClose(true);
gemfireCache.setProperties(gemfireProperties());
// GemFire Pool settings <4>
gemfireCache.setKeepAlive(false);
gemfireCache.setPingInterval(TimeUnit.SECONDS.toMillis(5));
gemfireCache.setReadTimeout(intValue(TimeUnit.SECONDS.toMillis(15)));
gemfireCache.setRetryAttempts(1);
gemfireCache.setSubscriptionEnabled(true);
gemfireCache.setThreadLocalConnections(false);
gemfireCache.setServers(Collections.singletonList(newConnectionEndpoint(host, port)));
registerClientMembershipListener(); // <5>
return gemfireCache;
}
int intValue(Number number) {
return number.intValue();
}
ConnectionEndpoint newConnectionEndpoint(String host, int port) {
return new ConnectionEndpoint(host, port);
}
void registerClientMembershipListener() {
ClientMembership.registerClientMembershipListener(new ClientMembershipListenerAdapter() {
@Override
public void memberJoined(ClientMembershipEvent event) {
LATCH.countDown();
}
});
}
@Bean(name = "Example")
@Profile("debug")
ClientRegionFactoryBean<String, Object> exampleRegion(ClientCache gemfireCache) {
ClientRegionFactoryBean<String, Object> exampleRegionFactory = new ClientRegionFactoryBean<>();
exampleRegionFactory.setCache(gemfireCache);
exampleRegionFactory.setClose(false);
exampleRegionFactory.setShortcut(ClientRegionShortcut.PROXY);
return exampleRegionFactory;
}
@Bean
BeanPostProcessor gemfireClientServerReadyBeanPostProcessor(
@Value("${spring-session-data-gemfire.cache.server.host:localhost}") final String host,
@Value("${spring-session-data-gemfire.cache.server.port:40404}") final int port) { // <5>
return new BeanPostProcessor() {
private final AtomicBoolean checkGemFireServerIsRunning = new AtomicBoolean(true);
private final AtomicReference<Pool> defaultPool = new AtomicReference<>(null);
public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
if (shouldCheckWhetherGemFireServerIsRunning(bean, beanName)) {
try {
validateCacheClientNotified();
validateCacheClientSubscriptionQueueConnectionEstablished();
}
catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
}
return bean;
}
private boolean shouldCheckWhetherGemFireServerIsRunning(Object bean, String beanName) {
return (isGemFireRegion(bean, beanName)
? checkGemFireServerIsRunning.compareAndSet(true, false)
: whenGemFireCache(bean, beanName));
}
private boolean isGemFireRegion(Object bean, String beanName) {
return (GemFireHttpSessionConfiguration.DEFAULT_SPRING_SESSION_GEMFIRE_REGION_NAME.equals(beanName)
|| bean instanceof Region);
}
private boolean whenGemFireCache(Object bean, String beanName) {
if (bean instanceof ClientCache) {
defaultPool.compareAndSet(null, ((ClientCache) bean).getDefaultPool());
}
return false;
}
private void validateCacheClientNotified() throws InterruptedException {
boolean didNotTimeout = LATCH.await(DEFAULT_TIMEOUT, TimeUnit.MILLISECONDS);
Assert.state(didNotTimeout, String.format(
"GemFire Cache Server failed to start on host [%s] and port [%d]", host, port));
}
@SuppressWarnings("all")
private void validateCacheClientSubscriptionQueueConnectionEstablished() throws InterruptedException {
boolean cacheClientSubscriptionQueueConnectionEstablished = false;
Pool pool = defaultIfNull(this.defaultPool.get(), GemfireConstants.DEFAULT_GEMFIRE_POOL_NAME,
GEMFIRE_DEFAULT_POOL_NAME);
if (pool instanceof PoolImpl) {
long timeout = (System.currentTimeMillis() + DEFAULT_TIMEOUT);
while (System.currentTimeMillis() < timeout
&& !((PoolImpl) pool).isPrimaryUpdaterAlive()) {
synchronized (pool) {
TimeUnit.MILLISECONDS.timedWait(pool, 500L);
}
}
cacheClientSubscriptionQueueConnectionEstablished |=
((PoolImpl) pool).isPrimaryUpdaterAlive();
}
Assert.state(cacheClientSubscriptionQueueConnectionEstablished, String.format(
"Cache client subscription queue connection not established; GemFire Pool was [%s];"
+ " GemFire Pool configuration was [locators = %s, servers = %s]",
pool, pool.getLocators(), pool.getServers()));
}
private Pool defaultIfNull(Pool pool, String... poolNames) {
AtomicReference<Pool> poolRef = new AtomicReference<>(null);
stream(nullSafeArray(poolNames, String.class)).forEach(poolName ->
poolRef.set(Optional.ofNullable(pool).orElseGet(() -> PoolManager.find(poolName))));
return poolRef.get();
}
public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
return bean;
}
};
return (beanName, cacheServerFactoryBean) ->
cacheServerFactoryBean.setServers(Collections.singletonList(
newConnectionEndpoint("localhost", port)));
}
}
@Configuration
static class SpringWebMvcConfiguration {
static class SpringWebMvcConfiguration { // <6>
@Bean
public WebMvcConfigurer webMvcConfig() { // <6>
public WebMvcConfigurer webMvcConfig() {
return new WebMvcConfigurer() {
@@ -310,9 +111,6 @@ public class Application {
}
}
@Autowired(required = false)
private ClientCache gemfireCache;
@ExceptionHandler
@ResponseBody
public String errorHandler(Throwable error) {
@@ -323,35 +121,22 @@ public class Application {
@RequestMapping(method = RequestMethod.GET, path = "/ping")
@ResponseBody
public String ping() { // <7>
public String ping() {
return PING_RESPONSE;
}
@RequestMapping(method = RequestMethod.GET, path = "/time")
@ResponseBody
public String time() {
return String.valueOf(this.gemfireCache.getRegion("/Example").get("time"));
}
/*
@RequestMapping("/")
public String index() { // <6>
return INDEX_TEMPLATE_VIEW_NAME;
}
*/
@RequestMapping(method = RequestMethod.POST, path = "/session")
public String session(HttpSession session, ModelMap modelMap,
@RequestParam(name = "attributeName", required = false) String name,
@RequestParam(name = "attributeValue", required = false) String value) { // <8>
@RequestParam(name = "attributeValue", required = false) String value) { // <7>
modelMap.addAttribute("sessionAttributes", attributes(setAttribute(updateRequestCount(session), name, value)));
modelMap.addAttribute("sessionAttributes",
attributes(setAttribute(updateRequestCount(session), name, value)));
return INDEX_TEMPLATE_VIEW_NAME;
}
// end::class[]
// end::class[]
/* (non-Javadoc) */
@SuppressWarnings("all")
HttpSession updateRequestCount(HttpSession session) {
@@ -362,17 +147,14 @@ public class Application {
}
}
/* (non-Javadoc) */
Integer nullSafeIncrement(Integer value) {
return (nullSafeIntValue(value) + 1);
}
/* (non-Javadoc) */
int nullSafeIntValue(Number value) {
return Optional.ofNullable(value).map(Number::intValue).orElse(0);
}
/* (non-Javadoc) */
HttpSession setAttribute(HttpSession session, String attributeName, String attributeValue) {
if (isSet(attributeName, attributeValue)) {
@@ -382,7 +164,6 @@ public class Application {
return session;
}
/* (non-Javadoc) */
boolean isSet(String... values) {
boolean set = true;
@@ -394,7 +175,6 @@ public class Application {
return set;
}
/* (non-Javadoc) */
Map<String, String> attributes(HttpSession session) {
Map<String, String> sessionAttributes = new HashMap<>();
@@ -406,7 +186,6 @@ public class Application {
return sessionAttributes;
}
/* (non-Javadoc) */
<T> Iterable<T> toIterable(Enumeration<T> enumeration) {
return () -> Optional.ofNullable(enumeration).map(CollectionUtils::toIterator)