Examples with AsyncHandler com.ning.http.client.AsyncHandler used on opensource projects

Example 1 with AsyncHandler

use of com.ning.http.client.AsyncHandler in project riposte by Nike-Inc.

the class AsyncHttpClientHelperTest method executeAsyncHttpRequest_sets_up_and_executes_call_as_expected.

@DataProvider(value = { "true   |   true", "true   |   false", "false  |   true", "false  |   false" }, splitBy = "\\|")
@Test
public void executeAsyncHttpRequest_sets_up_and_executes_call_as_expected(boolean performSubspan, boolean currentTracingInfoNull) {
    // given
    Whitebox.setInternalState(helperSpy, "performSubSpanAroundDownstreamCalls", performSubspan);
    CircuitBreaker<Response> circuitBreakerMock = mock(CircuitBreaker.class);
    doReturn(Optional.of(circuitBreakerMock)).when(helperSpy).getCircuitBreaker(any(RequestBuilderWrapper.class));
    ManualModeTask<Response> cbManualTaskMock = mock(ManualModeTask.class);
    doReturn(cbManualTaskMock).when(circuitBreakerMock).newManualModeTask();
    String url = "http://localhost/some/path";
    String method = "GET";
    AsyncHttpClient.BoundRequestBuilder reqMock = mock(AsyncHttpClient.BoundRequestBuilder.class);
    RequestBuilderWrapper rbw = new RequestBuilderWrapper(url, method, reqMock, Optional.empty(), false);
    AsyncResponseHandler responseHandlerMock = mock(AsyncResponseHandler.class);
    Span initialSpan = (currentTracingInfoNull) ? null : Tracer.getInstance().startRequestWithRootSpan("foo");
    Deque<Span> initialSpanStack = (currentTracingInfoNull) ? null : Tracer.getInstance().getCurrentSpanStackCopy();
    Map<String, String> initialMdc = (currentTracingInfoNull) ? null : MDC.getCopyOfContextMap();
    resetTracingAndMdc();
    // when
    CompletableFuture resultFuture = helperSpy.executeAsyncHttpRequest(rbw, responseHandlerMock, initialSpanStack, initialMdc);
    // then
    // Verify that the circuit breaker came from the getCircuitBreaker helper method and that its
    // throwExceptionIfCircuitBreakerIsOpen() method was called.
    verify(helperSpy).getCircuitBreaker(rbw);
    verify(cbManualTaskMock).throwExceptionIfCircuitBreakerIsOpen();
    // Verify that the inner request's execute method was called with a
    // AsyncCompletionHandlerWithTracingAndMdcSupport for the handler.
    ArgumentCaptor<AsyncHandler> executedHandlerCaptor = ArgumentCaptor.forClass(AsyncHandler.class);
    verify(reqMock).execute(executedHandlerCaptor.capture());
    AsyncHandler executedHandler = executedHandlerCaptor.getValue();
    assertThat(executedHandler).isInstanceOf(AsyncCompletionHandlerWithTracingAndMdcSupport.class);
    // Verify that the AsyncCompletionHandlerWithTracingAndMdcSupport was created with the expected args
    AsyncCompletionHandlerWithTracingAndMdcSupport achwtams = (AsyncCompletionHandlerWithTracingAndMdcSupport) executedHandler;
    assertThat(achwtams.completableFutureResponse).isSameAs(resultFuture);
    assertThat(achwtams.responseHandlerFunction).isSameAs(responseHandlerMock);
    assertThat(achwtams.performSubSpanAroundDownstreamCalls).isEqualTo(performSubspan);
    assertThat(achwtams.circuitBreakerManualTask).isEqualTo(Optional.of(cbManualTaskMock));
    if (performSubspan) {
        int initialSpanStackSize = (initialSpanStack == null) ? 0 : initialSpanStack.size();
        assertThat(achwtams.distributedTraceStackToUse).hasSize(initialSpanStackSize + 1);
        Span subspan = (Span) achwtams.distributedTraceStackToUse.peek();
        assertThat(subspan.getSpanName()).isEqualTo(handlerWithTracingAndMdcDummyExample.getSubspanSpanName(method, url));
        if (initialSpan != null) {
            assertThat(subspan.getTraceId()).isEqualTo(initialSpan.getTraceId());
            assertThat(subspan.getParentSpanId()).isEqualTo(initialSpan.getSpanId());
        }
        assertThat(achwtams.mdcContextToUse.get(Tracer.TRACE_ID_MDC_KEY)).isEqualTo(subspan.getTraceId());
    } else {
        assertThat(achwtams.distributedTraceStackToUse).isSameAs(initialSpanStack);
        assertThat(achwtams.mdcContextToUse).isSameAs(initialMdc);
    }
    // Verify that the trace headers were added (or not depending on state).
    Span spanForDownstreamCall = achwtams.getSpanForCall();
    if (initialSpan == null && !performSubspan) {
        assertThat(spanForDownstreamCall).isNull();
        verifyZeroInteractions(reqMock);
    } else {
        assertThat(spanForDownstreamCall).isNotNull();
        verify(reqMock).setHeader(TraceHeaders.TRACE_SAMPLED, String.valueOf(spanForDownstreamCall.isSampleable()));
        verify(reqMock).setHeader(TraceHeaders.TRACE_ID, spanForDownstreamCall.getTraceId());
        verify(reqMock).setHeader(TraceHeaders.SPAN_ID, spanForDownstreamCall.getSpanId());
        verify(reqMock).setHeader(TraceHeaders.PARENT_SPAN_ID, spanForDownstreamCall.getParentSpanId());
        verify(reqMock).setHeader(TraceHeaders.SPAN_NAME, spanForDownstreamCall.getSpanName());
    }
}