Examples with PipelineContinuationBehavior com.nike.riposte.server.handler.base.PipelineContinuationBehavior used on opensource projects

Example 6 with PipelineContinuationBehavior

use of com.nike.riposte.server.handler.base.PipelineContinuationBehavior in project riposte by Nike-Inc.

the class RequestContentValidationHandlerTest method doChannelRead_does_nothing_if_content_is_null.

@Test
public void doChannelRead_does_nothing_if_content_is_null() throws Exception {
    // given
    doReturn(null).when(requestInfoMock).getContent();
    // when
    PipelineContinuationBehavior result = handler.doChannelRead(ctxMock, msg);
    // then
    verifyNoMoreInteractions(requestValidatorMock);
    assertThat(result).isEqualTo(PipelineContinuationBehavior.CONTINUE);
}

Example 7 with PipelineContinuationBehavior

use of com.nike.riposte.server.handler.base.PipelineContinuationBehavior in project riposte by Nike-Inc.

the class ProxyRouterEndpointExecutionHandler method doChannelRead.

@Override
public PipelineContinuationBehavior doChannelRead(ChannelHandlerContext ctx, Object msg) {
    HttpProcessingState state = ChannelAttributes.getHttpProcessingStateForChannel(ctx).get();
    Endpoint<?> endpoint = state.getEndpointForExecution();
    if (shouldHandleDoChannelReadMessage(msg, endpoint)) {
        ProxyRouterProcessingState proxyRouterState = getOrCreateProxyRouterProcessingState(ctx);
        ProxyRouterEndpoint endpointProxyRouter = ((ProxyRouterEndpoint) endpoint);
        RequestInfo<?> requestInfo = state.getRequestInfo();
        if (msg instanceof HttpRequest) {
            if (requestInfo instanceof RiposteInternalRequestInfo) {
                // Tell this RequestInfo that we'll be managing the release of content chunks, so that when
                // RequestInfo.releaseAllResources() is called we don't have extra reference count removals.
                ((RiposteInternalRequestInfo) requestInfo).contentChunksWillBeReleasedExternally();
            }
            // We're supposed to start streaming. There may be pre-endpoint-execution validation logic or other work
            // that needs to happen before the endpoint is executed, so set up the CompletableFuture for the
            // endpoint call to only execute if the pre-endpoint-execution validation/work chain is successful.
            CompletableFuture<DownstreamRequestFirstChunkInfo> firstChunkFuture = state.getPreEndpointExecutionWorkChain().thenCompose(functionWithTracingAndMdc(aVoid -> endpointProxyRouter.getDownstreamRequestFirstChunkInfo(requestInfo, longRunningTaskExecutor, ctx), ctx));
            Long endpointTimeoutOverride = endpointProxyRouter.completableFutureTimeoutOverrideMillis();
            long callTimeoutValueToUse = (endpointTimeoutOverride == null) ? defaultCompletableFutureTimeoutMillis : endpointTimeoutOverride;
            // When the first chunk is ready, stream it downstream and set up what happens afterward.
            firstChunkFuture.whenComplete((downstreamRequestFirstChunkInfo, throwable) -> {
                Optional<ManualModeTask<HttpResponse>> circuitBreakerManualTask = getCircuitBreaker(downstreamRequestFirstChunkInfo, ctx).map(CircuitBreaker::newManualModeTask);
                StreamingCallback callback = new StreamingCallbackForCtx(ctx, circuitBreakerManualTask, endpointProxyRouter, requestInfo, proxyRouterState);
                if (throwable != null) {
                    // Something blew up trying to determine the first chunk info.
                    callback.unrecoverableErrorOccurred(throwable, true);
                } else if (!ctx.channel().isOpen()) {
                    // The channel was closed for some reason before we were able to start streaming.
                    String errorMsg = "The channel from the original caller was closed before we could begin the " + "downstream call.";
                    Exception channelClosedException = new RuntimeException(errorMsg);
                    runnableWithTracingAndMdc(() -> logger.warn(errorMsg), ctx).run();
                    callback.unrecoverableErrorOccurred(channelClosedException, true);
                } else {
                    try {
                        // Ok we have the first chunk info. Start by setting the downstream call info in the request
                        // info (i.e. for access logs if desired)
                        requestInfo.addRequestAttribute(DOWNSTREAM_CALL_PATH_REQUEST_ATTR_KEY, HttpUtils.extractPath(downstreamRequestFirstChunkInfo.firstChunk.uri()));
                        // Try our circuit breaker (if we have one).
                        Throwable circuitBreakerException = null;
                        try {
                            circuitBreakerManualTask.ifPresent(ManualModeTask::throwExceptionIfCircuitBreakerIsOpen);
                        } catch (Throwable t) {
                            circuitBreakerException = t;
                        }
                        if (circuitBreakerException == null) {
                            // No circuit breaker, or the breaker is closed. We can now stream the first chunk info.
                            String downstreamHost = downstreamRequestFirstChunkInfo.host;
                            int downstreamPort = downstreamRequestFirstChunkInfo.port;
                            HttpRequest downstreamRequestFirstChunk = downstreamRequestFirstChunkInfo.firstChunk;
                            boolean isSecureHttpsCall = downstreamRequestFirstChunkInfo.isHttps;
                            boolean relaxedHttpsValidation = downstreamRequestFirstChunkInfo.relaxedHttpsValidation;
                            boolean performSubSpanAroundDownstreamCall = downstreamRequestFirstChunkInfo.performSubSpanAroundDownstreamCall;
                            boolean addTracingHeadersToDownstreamCall = downstreamRequestFirstChunkInfo.addTracingHeadersToDownstreamCall;
                            // Tell the proxyRouterState about the streaming callback so that
                            // callback.unrecoverableErrorOccurred(...) can be called in the case of an error
                            // on subsequent chunks.
                            proxyRouterState.setStreamingCallback(callback);
                            // Setup the streaming channel future with everything it needs to kick off the
                            // downstream request.
                            proxyRouterState.setStreamingStartTimeNanos(System.nanoTime());
                            CompletableFuture<StreamingChannel> streamingChannel = streamingAsyncHttpClient.streamDownstreamCall(downstreamHost, downstreamPort, downstreamRequestFirstChunk, isSecureHttpsCall, relaxedHttpsValidation, callback, callTimeoutValueToUse, performSubSpanAroundDownstreamCall, addTracingHeadersToDownstreamCall, proxyRouterState, requestInfo, ctx);
                            // Tell the streaming channel future what to do when it completes.
                            streamingChannel = streamingChannel.whenComplete((sc, cause) -> {
                                if (cause == null) {
                                    // Successfully connected and sent the first chunk. We can now safely let
                                    // the remaining content chunks through for streaming.
                                    proxyRouterState.triggerChunkProcessing(sc);
                                } else {
                                    // Something blew up while connecting to the downstream server.
                                    callback.unrecoverableErrorOccurred(cause, true);
                                }
                            });
                            // Set the streaming channel future on the state so it can be connected to.
                            proxyRouterState.setStreamingChannelCompletableFuture(streamingChannel);
                        } else {
                            // Circuit breaker is tripped (or otherwise threw an unexpected exception). Immediately
                            // short circuit the error back to the client.
                            callback.unrecoverableErrorOccurred(circuitBreakerException, true);
                        }
                    } catch (Throwable t) {
                        callback.unrecoverableErrorOccurred(t, true);
                    }
                }
            });
        } else if (msg instanceof HttpContent) {
            HttpContent msgContent = (HttpContent) msg;
            // chunk-streaming behavior and subsequent cleanup for the given HttpContent.
            if (!releaseContentChunkIfStreamAlreadyFailed(msgContent, proxyRouterState)) {
                registerChunkStreamingAction(proxyRouterState, msgContent, ctx);
            }
        }
        return PipelineContinuationBehavior.DO_NOT_FIRE_CONTINUE_EVENT;
    }
    return PipelineContinuationBehavior.CONTINUE;
}

Example 8 with PipelineContinuationBehavior

use of com.nike.riposte.server.handler.base.PipelineContinuationBehavior in project riposte by Nike-Inc.

the class RequestFilterHandler method doChannelRead.

@Override
public PipelineContinuationBehavior doChannelRead(ChannelHandlerContext ctx, Object msg) {
    if (msg instanceof HttpRequest) {
        HttpProcessingState state = ChannelAttributes.getHttpProcessingStateForChannel(ctx).get();
        handlerUtils.createRequestInfoFromNettyHttpRequestAndHandleStateSetupIfNecessary((HttpRequest) msg, state);
        // If the Netty HttpRequest is invalid, we shouldn't process any of the filters.
        handlerUtils.throwExceptionIfNotSuccessfullyDecoded((HttpRequest) msg);
        // The HttpRequest is valid, so process the filters.
        BiFunction<RequestAndResponseFilter, RequestInfo, RequestInfo> normalFilterCall = (filter, request) -> filter.filterRequestFirstChunkNoPayload(request, ctx);
        BiFunction<RequestAndResponseFilter, RequestInfo, Pair<RequestInfo, Optional<ResponseInfo<?>>>> shortCircuitFilterCall = (filter, request) -> filter.filterRequestFirstChunkWithOptionalShortCircuitResponse(request, ctx);
        return handleFilterLogic(ctx, msg, state, normalFilterCall, shortCircuitFilterCall);
    }
    if (msg instanceof LastHttpContent) {
        HttpProcessingState state = ChannelAttributes.getHttpProcessingStateForChannel(ctx).get();
        BiFunction<RequestAndResponseFilter, RequestInfo, RequestInfo> normalFilterCall = (filter, request) -> filter.filterRequestLastChunkWithFullPayload(request, ctx);
        BiFunction<RequestAndResponseFilter, RequestInfo, Pair<RequestInfo, Optional<ResponseInfo<?>>>> shortCircuitFilterCall = (filter, request) -> filter.filterRequestLastChunkWithOptionalShortCircuitResponse(request, ctx);
        return handleFilterLogic(ctx, msg, state, normalFilterCall, shortCircuitFilterCall);
    }
    // Not the first or last chunk. No filters were executed, so continue normally.
    return PipelineContinuationBehavior.CONTINUE;
}

Example 9 with PipelineContinuationBehavior

use of com.nike.riposte.server.handler.base.PipelineContinuationBehavior in project riposte by Nike-Inc.

the class ExceptionHandlingHandlerTest method doExceptionCaught_should_call_getStateAndCreateIfNeeded_and_then_processError_and_then_set_response_on_state_and_return_CONTINUE.

@DataProvider(value = { "true   |   true", "true   |   false", "false  |   true", "false  |   false" }, splitBy = "\\|")
@Test
public void doExceptionCaught_should_call_getStateAndCreateIfNeeded_and_then_processError_and_then_set_response_on_state_and_return_CONTINUE(boolean endpointIsProxyRouterEndpoint, boolean proxyRouterStateExists) {
    // given
    ExceptionHandlingHandler handlerSpy = spy(handler);
    Throwable cause = new Exception("intentional test exception");
    ResponseInfo<ErrorResponseBody> errorResponseMock = mock(ResponseInfo.class);
    doReturn(errorResponseMock).when(handlerSpy).processError(state, null, cause);
    assertThat(state.getResponseInfo(), nullValue());
    if (endpointIsProxyRouterEndpoint) {
        state.setEndpointForExecution(mock(ProxyRouterEndpoint.class), "/some/path");
    }
    if (!proxyRouterStateExists) {
        doReturn(null).when(proxyRouterStateAttributeMock).get();
    }
    // when
    PipelineContinuationBehavior result = handlerSpy.doExceptionCaught(ctxMock, cause);
    // then
    verify(handlerSpy).getStateAndCreateIfNeeded(ctxMock, cause);
    verify(handlerSpy).processError(state, null, cause);
    assertThat(state.getResponseInfo(), is(errorResponseMock));
    Assertions.assertThat(state.getErrorThatTriggeredThisResponse()).isSameAs(cause);
    verify(handlerSpy).addErrorAnnotationToOverallRequestSpan(state, errorResponseMock, cause);
    if (endpointIsProxyRouterEndpoint && proxyRouterStateExists) {
        verify(proxyRouterStateSpy).cancelRequestStreaming(cause, ctxMock);
        verify(proxyRouterStateSpy).cancelDownstreamRequest(cause);
    } else {
        verifyNoInteractions(proxyRouterStateSpy);
    }
    assertThat(result, is(PipelineContinuationBehavior.CONTINUE));
}

Example 10 with PipelineContinuationBehavior

use of com.nike.riposte.server.handler.base.PipelineContinuationBehavior in project riposte by Nike-Inc.

the class ExceptionHandlingHandlerTest method doExceptionCaught_should_cancel_proxy_router_processing_if_endpoint_is_ProxyRouterEndpoint.

@Test
public void doExceptionCaught_should_cancel_proxy_router_processing_if_endpoint_is_ProxyRouterEndpoint() {
    // given
    ExceptionHandlingHandler handlerSpy = spy(handler);
    Throwable cause = new Exception("intentional test exception");
    ResponseInfo<ErrorResponseBody> errorResponseMock = mock(ResponseInfo.class);
    doReturn(errorResponseMock).when(handlerSpy).processError(state, null, cause);
    assertThat(state.getResponseInfo(), nullValue());
    // when
    PipelineContinuationBehavior result = handlerSpy.doExceptionCaught(ctxMock, cause);
    // then
    verify(handlerSpy).getStateAndCreateIfNeeded(ctxMock, cause);
    verify(handlerSpy).processError(state, null, cause);
    assertThat(state.getResponseInfo(), is(errorResponseMock));
    Assertions.assertThat(state.getErrorThatTriggeredThisResponse()).isSameAs(cause);
    verify(handlerSpy).addErrorAnnotationToOverallRequestSpan(state, errorResponseMock, cause);
    assertThat(result, is(PipelineContinuationBehavior.CONTINUE));
}