Package com.netflix.hystrix.HystrixCircuitBreakerTest

Examples of com.netflix.hystrix.HystrixCircuitBreakerTest.TestCircuitBreaker

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    /**
     * Test Request scoped caching with a mixture of commands
     */
    @Test
    public void testRequestCacheViaQueueSemaphore1() {
        TestCircuitBreaker circuitBreaker = new TestCircuitBreaker();
        SuccessfulCacheableCommandViaSemaphore command1 = new SuccessfulCacheableCommandViaSemaphore(circuitBreaker, true, "A");
        SuccessfulCacheableCommandViaSemaphore command2 = new SuccessfulCacheableCommandViaSemaphore(circuitBreaker, true, "B");
        SuccessfulCacheableCommandViaSemaphore command3 = new SuccessfulCacheableCommandViaSemaphore(circuitBreaker, true, "A");

        assertFalse(command1.isCommandRunningInThread());
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    /**
     * Test Request scoped caching with a mixture of commands
     */
    @Test
    public void testNoRequestCacheViaQueueSemaphore1() {
        TestCircuitBreaker circuitBreaker = new TestCircuitBreaker();
        SuccessfulCacheableCommandViaSemaphore command1 = new SuccessfulCacheableCommandViaSemaphore(circuitBreaker, false, "A");
        SuccessfulCacheableCommandViaSemaphore command2 = new SuccessfulCacheableCommandViaSemaphore(circuitBreaker, false, "B");
        SuccessfulCacheableCommandViaSemaphore command3 = new SuccessfulCacheableCommandViaSemaphore(circuitBreaker, false, "A");

        assertFalse(command1.isCommandRunningInThread());
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    /**
     * Test Request scoped caching with a mixture of commands
     */
    @Test
    public void testRequestCacheViaExecuteSemaphore1() {
        TestCircuitBreaker circuitBreaker = new TestCircuitBreaker();
        SuccessfulCacheableCommandViaSemaphore command1 = new SuccessfulCacheableCommandViaSemaphore(circuitBreaker, true, "A");
        SuccessfulCacheableCommandViaSemaphore command2 = new SuccessfulCacheableCommandViaSemaphore(circuitBreaker, true, "B");
        SuccessfulCacheableCommandViaSemaphore command3 = new SuccessfulCacheableCommandViaSemaphore(circuitBreaker, true, "A");

        assertFalse(command1.isCommandRunningInThread());
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    /**
     * Test Request scoped caching with a mixture of commands
     */
    @Test
    public void testNoRequestCacheViaExecuteSemaphore1() {
        TestCircuitBreaker circuitBreaker = new TestCircuitBreaker();
        SuccessfulCacheableCommandViaSemaphore command1 = new SuccessfulCacheableCommandViaSemaphore(circuitBreaker, false, "A");
        SuccessfulCacheableCommandViaSemaphore command2 = new SuccessfulCacheableCommandViaSemaphore(circuitBreaker, false, "B");
        SuccessfulCacheableCommandViaSemaphore command3 = new SuccessfulCacheableCommandViaSemaphore(circuitBreaker, false, "A");

        assertFalse(command1.isCommandRunningInThread());
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        assertEquals(3, HystrixRequestLog.getCurrentRequest().getAllExecutedCommands().size());
    }

    @Test
    public void testNoRequestCacheOnTimeoutThrowsException() throws Exception {
        TestCircuitBreaker circuitBreaker = new TestCircuitBreaker();
        NoRequestCacheTimeoutWithoutFallback r1 = new NoRequestCacheTimeoutWithoutFallback(circuitBreaker);
        try {
            System.out.println("r1 value: " + r1.execute());
            // we should have thrown an exception
            fail("expected a timeout");
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        assertEquals(4, HystrixRequestLog.getCurrentRequest().getAllExecutedCommands().size());
    }

    @Test
    public void testRequestCacheOnTimeoutCausesNullPointerException() throws Exception {
        TestCircuitBreaker circuitBreaker = new TestCircuitBreaker();
        // Expect it to time out - all results should be false
        assertFalse(new RequestCacheNullPointerExceptionCase(circuitBreaker).execute());
        assertFalse(new RequestCacheNullPointerExceptionCase(circuitBreaker).execute()); // return from cache #1
        assertFalse(new RequestCacheNullPointerExceptionCase(circuitBreaker).execute()); // return from cache #2
        Thread.sleep(500); // timeout on command is set to 200ms
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        assertTrue(executeCommands[1].isResponseFromFallback());
    }

    @Test
    public void testRequestCacheOnTimeoutThrowsException() throws Exception {
        TestCircuitBreaker circuitBreaker = new TestCircuitBreaker();
        RequestCacheTimeoutWithoutFallback r1 = new RequestCacheTimeoutWithoutFallback(circuitBreaker);
        try {
            System.out.println("r1 value: " + r1.execute());
            // we should have thrown an exception
            fail("expected a timeout");
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        assertEquals(4, HystrixRequestLog.getCurrentRequest().getAllExecutedCommands().size());
    }

    @Test
    public void testRequestCacheOnThreadRejectionThrowsException() throws Exception {
        TestCircuitBreaker circuitBreaker = new TestCircuitBreaker();
        CountDownLatch completionLatch = new CountDownLatch(1);
        RequestCacheThreadRejectionWithoutFallback r1 = new RequestCacheThreadRejectionWithoutFallback(circuitBreaker, completionLatch);
        try {
            System.out.println("r1: " + r1.execute());
            // we should have thrown an exception
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    public void testCacheKeyExecutionRequiresRequestVariable() {
        try {
            /* force the RequestVariable to not be initialized */
            HystrixRequestContext.setContextOnCurrentThread(null);

            TestCircuitBreaker circuitBreaker = new TestCircuitBreaker();

            SuccessfulCacheableCommand command = new SuccessfulCacheableCommand(circuitBreaker, true, "one");
            assertEquals(true, command.execute());

            SuccessfulCacheableCommand command2 = new SuccessfulCacheableCommand(circuitBreaker, true, "two");
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    /**
     * Test that a BadRequestException can be thrown and not count towards errors and bypasses fallback.
     */
    @Test
    public void testBadRequestExceptionViaExecuteInThread() {
        TestCircuitBreaker circuitBreaker = new TestCircuitBreaker();
        try {
            new BadRequestCommand(circuitBreaker, ExecutionIsolationStrategy.THREAD).execute();
            fail("we expect to receive a " + HystrixBadRequestException.class.getSimpleName());
        } catch (HystrixBadRequestException e) {
            // success
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Related Classes of com.netflix.hystrix.HystrixCircuitBreakerTest.TestCircuitBreaker

  • com.netflix.hystrix.HystrixAsyncCommandTest
  • com.netflix.hystrix.HystrixCommandTest
  • com.netflix.hystrix.HystrixObservableCommandTest
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