Java Hystrix类代码示例

import com.netflix.hystrix.Hystrix; //导入依赖的package包/类
@Before
public void setUp() {
    Hystrix.reset();
    HystrixPlugins.reset();
    HystrixRequestContext.initializeContext();
    HystrixPlugins.getInstance().registerMetricsPublisher(notifier);
}
 

import com.netflix.hystrix.Hystrix; //导入依赖的package包/类
@After
public void reset() {
  ConfigurationManager.getConfigInstance()
    .setProperty("hystrix.command.default.circuitBreaker.forceOpen",
      false);

  Hystrix.reset();
}
 

import com.netflix.hystrix.Hystrix; //导入依赖的package包/类
private static void initHystrixPlugins() {
	try {
		registerDispatcherStrategies();
	} catch (Exception e) {
		log.warn("Failed to init Hystrix with custom Astrix strategies. Hystrix configuration will be reset and one more registreation attempt will be performed", e);
		Hystrix.reset();
		registerDispatcherStrategies();
	}
}
 

import com.netflix.hystrix.Hystrix; //导入依赖的package包/类
@Before
public void before() throws InterruptedException {
	Hystrix.reset();
	context = new TestAstrixConfigurer().enableFaultTolerance(true)
										.registerApiProvider(PingApi.class)
										.set(AstrixBeanSettings.TIMEOUT, AstrixBeanKey.create(Ping.class), 250)
										.set(AstrixBeanSettings.CORE_SIZE, AstrixBeanKey.create(Ping.class), 1)
										.set(AstrixThreadPoolProperties.MAX_QUEUE_SIZE, AstrixBeanKey.create(Ping.class), -1) // NO QUEUE
										.set("pingUri", DirectComponent.registerAndGetUri(Ping.class, pingServer))
										.configure();
	ping = context.getBean(Ping.class);
	initMetrics(ping);
}
 

import com.netflix.hystrix.Hystrix; //导入依赖的package包/类
@Before
public void before() throws InterruptedException {
	Hystrix.reset();
	context = new TestAstrixConfigurer().enableFaultTolerance(true)
										.registerApiProvider(PingApi.class)
										.set(AstrixBeanSettings.TIMEOUT, AstrixBeanKey.create(Ping.class), 25)
										.set(AstrixBeanSettings.MAX_CONCURRENT_REQUESTS, AstrixBeanKey.create(Ping.class), 1)
										.set("pingUri", DirectComponent.registerAndGetUri(Ping.class, pingServer))
										.configure();
	ping = context.getBean(Ping.class);
	initMetrics(ping);
}
 

import com.netflix.hystrix.Hystrix; //导入依赖的package包/类
@Before
public void setup() throws InterruptedException {
	Hystrix.reset();
	counter.incrementAndGet();
	astrixConfigurer.registerApiProvider(PingApiProvider.class);
	astrixConfigurer.registerApiProvider(CorruptPingApiProvider.class);
	astrixConfigurer.enableFaultTolerance(true);
	context = (AstrixApplicationContext) astrixConfigurer.configure();
	ping = context.getBean(Ping.class);
	initMetrics(ping);
}
 

import com.netflix.hystrix.Hystrix; //导入依赖的package包/类
/**
 * Notification that the servlet context is about to be shut down.
 * @param event ServletContextEvent
 */
public void contextDestroyed(ServletContextEvent event) {
    LOG.debug("HystrixWebListener - contextDestroyed");
    LOG.debug("Invoke Hystrix.reset()");
    Hystrix.reset();
    LOG.debug("Completed Hystrix.reset()");
}
 

import com.netflix.hystrix.Hystrix; //导入依赖的package包/类
@Override
public void destroy() throws Exception {
    LOG.info("Shutting down Hystrix...");
    // shutdown all thread pools; waiting a little time for shutdown
    Hystrix.reset(1, TimeUnit.SECONDS);
    LOG.info("Shut down Hystrix done.");
}
 

import com.netflix.hystrix.Hystrix; //导入依赖的package包/类
/**
 * Component deactivation callback which is used to reset Hystrix.
 */
@Deactivate
protected void deactivate() {
	Hystrix.reset();
}
 

import com.netflix.hystrix.Hystrix; //导入依赖的package包/类
@After
public void tearDown() throws Exception {
    Hystrix.reset();
}
 

import com.netflix.hystrix.Hystrix; //导入依赖的package包/类
@Before
public void before() {
	Hystrix.reset();
}
 

import com.netflix.hystrix.Hystrix; //导入依赖的package包/类
@Override
public void destroy() {
    super.destroy();
    Hystrix.reset(5, TimeUnit.SECONDS);
    wrappedServlet.destroy();
}
 

import com.netflix.hystrix.Hystrix; //导入依赖的package包/类
@After
public void teardown() {
    Hystrix.reset();
    CollectorRegistry.defaultRegistry.clear();
}
 

import com.netflix.hystrix.Hystrix; //导入依赖的package包/类
@After
public void teardown() {
    CollectorRegistry.defaultRegistry.clear();
    Hystrix.reset();
}
 

import com.netflix.hystrix.Hystrix; //导入依赖的package包/类
private static synchronized void doInitialize(final Type... types) {
    if (initialized) {
        return;
    }

    // Fix Java 7 problem that initialized Hystrix/Servo before the it has been even called
    Hystrix.reset();
    HystrixPlugins.reset();

    // register hystrix servo metrics publisher, required for collecting hystrix metrics
    HystrixPlugins.getInstance().registerMetricsPublisher(HystrixServoMetricsPublisher.getInstance());
    // if IllegalStateException is thrown it means there is a hytrix command being used prior to this setup.
    // SEE: https://github.com/lightblue-platform/lightblue-rest/issues/58
    //      https://github.com/Netflix/Hystrix/issues/150

    List<MetricObserver> observers = new ArrayList<>();

    for (Type type : types) {
        switch (type) {
            case GRAPHITE:
                registerGraphiteMetricObserver(observers, findVariable(ENV_GRAPHITE_PREFIX),
                        findVariable(ENV_GRAPHITE_HOSTNAME), findVariable(ENV_GRAPHITE_PORT));
                break;
            case STATSD:
                registerStatsdMetricObserver(observers, findVariable(ENV_STATSD_PREFIX),
                        findVariable(ENV_STATSD_HOSTNAME), findVariable(ENV_STATSD_PORT));
                break;
            default:
                throw new RuntimeException("Unsupported Type: " + type);
        }
    }

    // start poll scheduler
    PollScheduler.getInstance().start();

    // create and register registery poller
    PollRunnable registeryTask = new PollRunnable(new MonitorRegistryMetricPoller(), BasicMetricFilter.MATCH_ALL, observers);
    PollScheduler.getInstance().addPoller(registeryTask, 5, TimeUnit.SECONDS);

    // create and register jvm poller
    PollRunnable jvmTask = new PollRunnable(new JvmMetricPoller(), BasicMetricFilter.MATCH_ALL, observers);
    PollScheduler.getInstance().addPoller(jvmTask, 5, TimeUnit.SECONDS);

    initialized = true;
    LOGGER.debug("doInitialize() completed, initialized = " + initialized);
}