use of com.nike.wingtips.Span in project riposte by Nike-Inc.
the class AsyncHttpClientHelperTest method constructor_clears_out_tracing_and_mdc_info_before_building_underlying_client_and_resets_afterward.
@DataProvider(value = { "true | true", "true | false", "false | true", "false | false" }, splitBy = "\\|")
@Test
public void constructor_clears_out_tracing_and_mdc_info_before_building_underlying_client_and_resets_afterward(boolean emptyBeforeCall, boolean explode) {
AsyncHttpClientConfig config = new AsyncHttpClientConfig.Builder().build();
AsyncHttpClientConfig.Builder builderMock = mock(AsyncHttpClientConfig.Builder.class);
List<Span> traceAtTimeOfBuildCall = new ArrayList<>();
List<Map<String, String>> mdcAtTimeOfBuildCall = new ArrayList<>();
RuntimeException explodeEx = new RuntimeException("kaboom");
doAnswer(invocation -> {
traceAtTimeOfBuildCall.add(Tracer.getInstance().getCurrentSpan());
mdcAtTimeOfBuildCall.add(MDC.getCopyOfContextMap());
if (explode)
throw explodeEx;
return config;
}).when(builderMock).build();
Span spanBeforeCall = (emptyBeforeCall) ? null : Tracer.getInstance().startRequestWithRootSpan("foo");
Map<String, String> mdcBeforeCall = MDC.getCopyOfContextMap();
assertThat(Tracer.getInstance().getCurrentSpan()).isEqualTo(spanBeforeCall);
if (emptyBeforeCall)
assertThat(mdcBeforeCall).isNull();
else
assertThat(mdcBeforeCall).isNotEmpty();
// when
Throwable ex = catchThrowable(() -> new AsyncHttpClientHelper(builderMock, true));
// then
verify(builderMock).build();
assertThat(traceAtTimeOfBuildCall).hasSize(1);
assertThat(traceAtTimeOfBuildCall.get(0)).isNull();
assertThat(mdcAtTimeOfBuildCall).hasSize(1);
assertThat(mdcAtTimeOfBuildCall.get(0)).isNull();
assertThat(Tracer.getInstance().getCurrentSpan()).isEqualTo(spanBeforeCall);
assertThat(MDC.getCopyOfContextMap()).isEqualTo(mdcBeforeCall);
if (explode)
assertThat(ex).isSameAs(explodeEx);
}
use of com.nike.wingtips.Span in project riposte by Nike-Inc.
the class ChannelPipelineFinalizerHandler method doChannelInactive.
/**
* This method is used as the final cleanup safety net for when a channel is closed. It guarantees that any
* {@link ByteBuf}s being held by {@link RequestInfo} or {@link ProxyRouterProcessingState} are {@link
* ByteBuf#release()}d so that we don't end up with a memory leak.
*
* <p>Note that we can't use {@link ChannelOutboundHandler#close(ChannelHandlerContext, ChannelPromise)} for this
* purpose as it is only called if we close the connection in our application code. It won't be triggered if
* (for example) the caller closes the connection, and we need it to *always* run for *every* closed connection,
* no matter the source of the close. {@link ChannelInboundHandler#channelInactive(ChannelHandlerContext)} is always
* called, so we're using that.
*/
@Override
public PipelineContinuationBehavior doChannelInactive(ChannelHandlerContext ctx) throws Exception {
try {
// Grab hold of the things we may need when cleaning up.
HttpProcessingState httpState = ChannelAttributes.getHttpProcessingStateForChannel(ctx).get();
ProxyRouterProcessingState proxyRouterState = ChannelAttributes.getProxyRouterProcessingStateForChannel(ctx).get();
if (httpState == null) {
if (proxyRouterState == null) {
logger.debug("This channel closed before it processed any requests. Nothing to cleanup. " + "current_span={}", Tracer.getInstance().getCurrentSpan());
} else {
// This should never happen, but if it does we'll try to release what we can and then return.
logger.error("Found a channel where HttpProcessingState was null, but ProxyRouterProcessingState " + "was not null. This should not be possible! " + "current_span={}", Tracer.getInstance().getCurrentSpan());
releaseProxyRouterStateResources(proxyRouterState, ctx);
}
// With httpState null, there's nothing left for us to do.
return PipelineContinuationBehavior.CONTINUE;
}
RequestInfo<?> requestInfo = httpState.getRequestInfo();
ResponseInfo<?> responseInfo = httpState.getResponseInfo();
if (logger.isDebugEnabled()) {
runnableWithTracingAndMdc(() -> logger.debug("Cleaning up channel after it was closed. closed_channel_id={}", ctx.channel().toString()), ctx).run();
}
// The request/response is definitely done at this point since the channel is closing. Set the response end
// time if it hasn't already been done.
httpState.setResponseEndTimeNanosToNowIfNotAlreadySet();
// Handle the case where the response wasn't fully sent or tracing wasn't completed for some reason.
// We want to finish the distributed tracing span for this request since there's no other place it
// might be done, and if the request wasn't fully sent then we should spit out a log message so
// debug investigations can find out what happened.
@SuppressWarnings("SimplifiableConditionalExpression") boolean tracingAlreadyCompleted = httpState.isTraceCompletedOrScheduled();
boolean responseNotFullySent = responseInfo == null || !responseInfo.isResponseSendingLastChunkSent();
if (responseNotFullySent || !tracingAlreadyCompleted) {
runnableWithTracingAndMdc(() -> {
if (responseNotFullySent) {
logger.warn("The caller's channel was closed before a response could be sent. Distributed tracing " + "will be completed now if it wasn't already done, and we will attempt to output an " + "access log if needed. Any dangling resources will be released. " + "response_info_is_null={}", (responseInfo == null));
}
if (!tracingAlreadyCompleted) {
httpState.setTraceCompletedOrScheduled(true);
Span currentSpan = Tracer.getInstance().getCurrentSpan();
if (currentSpan != null && !currentSpan.isCompleted())
Tracer.getInstance().completeRequestSpan();
}
}, ctx).run();
}
// Make sure access logging is handled
if (!httpState.isAccessLogCompletedOrScheduled() && accessLogger != null) {
httpState.setAccessLogCompletedOrScheduled(true);
RequestInfo<?> requestInfoToUse = (requestInfo == null) ? RequestInfoImpl.dummyInstanceForUnknownRequests() : requestInfo;
accessLogger.log(requestInfoToUse, httpState.getActualResponseObject(), responseInfo, httpState.calculateTotalRequestTimeMillis());
}
// Make sure metrics is handled
handleMetricsForCompletedRequestIfNotAlreadyDone(httpState);
// Tell the RequestInfo it can release all its resources.
if (requestInfo != null)
requestInfo.releaseAllResources();
releaseProxyRouterStateResources(proxyRouterState, ctx);
} catch (Throwable t) {
runnableWithTracingAndMdc(() -> logger.error("An unexpected error occurred during ChannelPipelineFinalizerHandler.doChannelInactive() - this " + "should not happen and indicates a bug that needs to be fixed in Riposte.", t), ctx).run();
}
return PipelineContinuationBehavior.CONTINUE;
}
use of com.nike.wingtips.Span in project riposte by Nike-Inc.
the class AsyncHttpClientHelper method executeAsyncHttpRequest.
/**
* Executes the given request asynchronously, handling the response with the given responseHandlerFunction, and
* returns a {@link CompletableFuture} that represents the result of executing the
* responseHandlerFunction on the downstream response. Any error anywhere along the way will cause the returned
* future to be completed with {@link CompletableFuture#completeExceptionally(Throwable)}.
* <p/>
* NOTE: This is a helper method for calling {@link #executeAsyncHttpRequest(RequestBuilderWrapper,
* AsyncResponseHandler, java.util.Deque, java.util.Map)} that uses {@link
* ChannelAttributes#getHttpProcessingStateForChannel(ChannelHandlerContext)} to extract the {@link
* HttpProcessingState} from the given ctx argument, and then grabs {@link
* HttpProcessingState#getDistributedTraceStack()} and {@link HttpProcessingState#getLoggerMdcContextMap()} to use
* as the distributed trace stack and MDC info for the downstream call.
*/
public <O> CompletableFuture<O> executeAsyncHttpRequest(RequestBuilderWrapper requestBuilderWrapper, AsyncResponseHandler<O> responseHandlerFunction, ChannelHandlerContext ctx) {
HttpProcessingState state = ChannelAttributes.getHttpProcessingStateForChannel(ctx).get();
if (state == null)
throw new IllegalStateException("state cannot be null");
Map<String, String> mdcContextMap = state.getLoggerMdcContextMap();
Deque<Span> distributedTraceStack = state.getDistributedTraceStack();
requestBuilderWrapper.setCtx(ctx);
return executeAsyncHttpRequest(requestBuilderWrapper, responseHandlerFunction, distributedTraceStack, mdcContextMap);
}
use of com.nike.wingtips.Span in project riposte by Nike-Inc.
the class StreamingAsyncHttpClient method streamDownstreamCall.
/**
* TODO: Fully document me.
* <br/>
* NOTE: The returned CompletableFuture will only be completed successfully if the connection to the downstream
* server was successful and the initialRequestChunk was successfully written out. This has implications for
* initialRequestChunk regarding releasing its reference count (i.e. calling {@link
* io.netty.util.ReferenceCountUtil#release(Object)} and passing in initialRequestChunk). If the returned
* CompletableFuture is successful it means initialRequestChunk's reference count will already be reduced by one
* relative to when this method was called because it will have been passed to a successful {@link
* ChannelHandlerContext#writeAndFlush(Object)} method call.
* <p/>
* Long story short - assume initialRequestChunk is an object with a reference count of x:
* <ul>
* <li>
* If the returned CompletableFuture is successful, then when it completes successfully
* initialRequestChunk's reference count will be x - 1
* </li>
* <li>
* If the returned CompletableFuture is *NOT* successful, then when it completes initialRequestChunk's
* reference count will still be x
* </li>
* </ul>
*/
public CompletableFuture<StreamingChannel> streamDownstreamCall(String downstreamHost, int downstreamPort, HttpRequest initialRequestChunk, boolean isSecureHttpsCall, boolean relaxedHttpsValidation, StreamingCallback callback, long downstreamCallTimeoutMillis, boolean performSubSpanAroundDownstreamCalls, boolean addTracingHeadersToDownstreamCall, ChannelHandlerContext ctx) {
CompletableFuture<StreamingChannel> streamingChannel = new CompletableFuture<>();
// set host header. include port in value when it is a non-default port
boolean isDefaultPort = (downstreamPort == 80 && !isSecureHttpsCall) || (downstreamPort == 443 && isSecureHttpsCall);
String hostHeaderValue = (isDefaultPort) ? downstreamHost : downstreamHost + ":" + downstreamPort;
initialRequestChunk.headers().set(HttpHeaders.Names.HOST, hostHeaderValue);
long beforeConnectionStartTimeNanos = System.nanoTime();
// Create a connection to the downstream server.
ChannelPool pool = getPooledChannelFuture(downstreamHost, downstreamPort);
Future<Channel> channelFuture = pool.acquire();
// Add a listener that kicks off the downstream call once the connection is completed.
channelFuture.addListener(future -> {
Pair<Deque<Span>, Map<String, String>> originalThreadInfo = null;
try {
long connectionSetupTimeNanos = System.nanoTime() - beforeConnectionStartTimeNanos;
HttpProcessingState httpProcessingState = ChannelAttributes.getHttpProcessingStateForChannel(ctx).get();
if (httpProcessingState != null) {
RequestInfo<?> requestInfo = httpProcessingState.getRequestInfo();
if (requestInfo != null) {
requestInfo.addRequestAttribute(DOWNSTREAM_CALL_CONNECTION_SETUP_TIME_NANOS_REQUEST_ATTR_KEY, connectionSetupTimeNanos);
}
}
// Setup tracing and MDC so our log messages have the correct distributed trace info, etc.
originalThreadInfo = linkTracingAndMdcToCurrentThread(ctx);
if (logger.isDebugEnabled()) {
logger.debug("CONNECTION SETUP TIME NANOS: {}", connectionSetupTimeNanos);
}
if (!future.isSuccess()) {
try {
// We did not connect to the downstream host successfully. Notify the callback.
streamingChannel.completeExceptionally(new WrapperException("Unable to connect to downstream host: " + downstreamHost, future.cause()));
} finally {
Channel ch = channelFuture.getNow();
if (ch != null) {
// We likely will never reach here since the channel future was not successful, however if
// we *do* manage to get here somehow, then mark the channel broken and release it back
// to the pool.
markChannelAsBroken(ch);
pool.release(ch);
}
}
return;
}
// noinspection ConstantConditions
if (performSubSpanAroundDownstreamCalls) {
// Add the subspan.
String spanName = getSubspanSpanName(initialRequestChunk.getMethod().name(), downstreamHost + ":" + downstreamPort + initialRequestChunk.getUri());
if (Tracer.getInstance().getCurrentSpan() == null) {
// There is no parent span to start a subspan from, so we have to start a new span for this call
// rather than a subspan.
// TODO: Set this to CLIENT once we have that ability in the wingtips API for request root spans
Tracer.getInstance().startRequestWithRootSpan(spanName);
} else {
// There was at least one span on the stack, so we can start a subspan for this call.
Tracer.getInstance().startSubSpan(spanName, Span.SpanPurpose.CLIENT);
}
}
Deque<Span> distributedSpanStackToUse = Tracer.getInstance().getCurrentSpanStackCopy();
Map<String, String> mdcContextToUse = MDC.getCopyOfContextMap();
Span spanForDownstreamCall = (distributedSpanStackToUse == null) ? null : distributedSpanStackToUse.peek();
// Add distributed trace headers to the downstream call if desired and we have a current span.
if (addTracingHeadersToDownstreamCall && spanForDownstreamCall != null) {
HttpRequestTracingUtils.propagateTracingHeaders((headerKey, headerValue) -> {
if (headerValue != null) {
initialRequestChunk.headers().set(headerKey, headerValue);
}
}, spanForDownstreamCall);
}
Channel ch = channelFuture.getNow();
if (logger.isDebugEnabled())
logger.debug("Channel ID of the Channel pulled from the pool: {}", ch.toString());
// We may not be in the right thread to modify the channel pipeline and write data. If we're in the
// wrong thread we can get deadlock type situations. By running the relevant bits in the channel's
// event loop we're guaranteed it will be run in the correct thread.
ch.eventLoop().execute(runnableWithTracingAndMdc(() -> {
BiConsumer<String, Throwable> prepChannelErrorHandler = (errorMessage, cause) -> {
try {
streamingChannel.completeExceptionally(new WrapperException(errorMessage, cause));
} finally {
// This channel may be permanently busted depending on the error, so mark it broken and let
// the pool close it and clean it up.
markChannelAsBroken(ch);
pool.release(ch);
}
};
try {
ObjectHolder<Boolean> callActiveHolder = new ObjectHolder<>();
callActiveHolder.heldObject = true;
ObjectHolder<Boolean> lastChunkSentDownstreamHolder = new ObjectHolder<>();
lastChunkSentDownstreamHolder.heldObject = false;
// noinspection ConstantConditions
prepChannelForDownstreamCall(pool, ch, callback, distributedSpanStackToUse, mdcContextToUse, isSecureHttpsCall, relaxedHttpsValidation, performSubSpanAroundDownstreamCalls, downstreamCallTimeoutMillis, callActiveHolder, lastChunkSentDownstreamHolder);
logInitialRequestChunk(initialRequestChunk, downstreamHost, downstreamPort);
// Send the HTTP request.
ChannelFuture writeFuture = ch.writeAndFlush(initialRequestChunk);
// After the initial chunk has been sent we'll open the floodgates
// for any further chunk streaming
writeFuture.addListener(completedWriteFuture -> {
if (completedWriteFuture.isSuccess())
streamingChannel.complete(new StreamingChannel(ch, pool, callActiveHolder, lastChunkSentDownstreamHolder, distributedSpanStackToUse, mdcContextToUse));
else {
prepChannelErrorHandler.accept("Writing the first HttpRequest chunk to the downstream service failed.", completedWriteFuture.cause());
// noinspection UnnecessaryReturnStatement
return;
}
});
} catch (SSLException | NoSuchAlgorithmException | KeyStoreException ex) {
prepChannelErrorHandler.accept("Error setting up SSL context for downstream call", ex);
// noinspection UnnecessaryReturnStatement
return;
} catch (Throwable t) {
// If we don't catch and handle this here it gets swallowed since we're in a Runnable
prepChannelErrorHandler.accept("An unexpected error occurred while prepping the channel pipeline for the downstream call", t);
// noinspection UnnecessaryReturnStatement
return;
}
}, ctx));
} catch (Throwable ex) {
try {
String errorMsg = "Error occurred attempting to send first chunk (headers/etc) downstream";
Exception errorToFire = new WrapperException(errorMsg, ex);
logger.warn(errorMsg, errorToFire);
streamingChannel.completeExceptionally(errorToFire);
} finally {
Channel ch = channelFuture.getNow();
if (ch != null) {
// Depending on where the error was thrown the channel may or may not exist. If it does exist,
// then assume it's unusable, mark it as broken, and let the pool close it and remove it.
markChannelAsBroken(ch);
pool.release(ch);
}
}
} finally {
// Unhook the tracing and MDC stuff from this thread now that we're done.
unlinkTracingAndMdcFromCurrentThread(originalThreadInfo);
}
});
return streamingChannel;
}
use of com.nike.wingtips.Span in project riposte by Nike-Inc.
the class StreamingAsyncHttpClient method prepChannelForDownstreamCall.
protected void prepChannelForDownstreamCall(ChannelPool pool, Channel ch, StreamingCallback callback, Deque<Span> distributedSpanStackToUse, Map<String, String> mdcContextToUse, boolean isSecureHttpsCall, boolean relaxedHttpsValidation, boolean performSubSpanAroundDownstreamCalls, long downstreamCallTimeoutMillis, ObjectHolder<Boolean> callActiveHolder, ObjectHolder<Boolean> lastChunkSentDownstreamHolder) throws SSLException, NoSuchAlgorithmException, KeyStoreException {
ChannelHandler chunkSenderHandler = new SimpleChannelInboundHandler<HttpObject>() {
@Override
protected void channelRead0(ChannelHandlerContext downstreamCallCtx, HttpObject msg) throws Exception {
try {
// the call is fully processed should not trigger the behavior a second time.
if (callActiveHolder.heldObject) {
if (msg instanceof LastHttpContent) {
lastChunkSentDownstreamHolder.heldObject = true;
if (performSubSpanAroundDownstreamCalls) {
// Complete the subspan.
runnableWithTracingAndMdc(() -> {
if (distributedSpanStackToUse == null || distributedSpanStackToUse.size() < 2)
Tracer.getInstance().completeRequestSpan();
else
Tracer.getInstance().completeSubSpan();
}, distributedSpanStackToUse, mdcContextToUse).run();
}
}
HttpObject msgToPass = msg;
if (msg instanceof HttpResponse) {
// We can't pass the original HttpResponse back to the callback due to intricacies of how
// Netty handles determining the last chunk. If we do, and the callback ends up writing
// the message out to the client (which happens during proxy routing for example), then
// msg's headers might get modified - potentially causing this channel pipeline to
// never send a LastHttpContent, which will in turn cause an indefinite hang.
HttpResponse origHttpResponse = (HttpResponse) msg;
HttpResponse httpResponse = (msg instanceof FullHttpResponse) ? new DefaultFullHttpResponse(origHttpResponse.getProtocolVersion(), origHttpResponse.getStatus(), ((FullHttpResponse) msg).content()) : new DefaultHttpResponse(origHttpResponse.getProtocolVersion(), origHttpResponse.getStatus());
httpResponse.headers().add(origHttpResponse.headers());
msgToPass = httpResponse;
}
callback.messageReceived(msgToPass);
} else {
if (shouldLogBadMessagesAfterRequestFinishes) {
runnableWithTracingAndMdc(() -> logger.warn("Received HttpObject msg when call was not active: {}", String.valueOf(msg)), distributedSpanStackToUse, mdcContextToUse).run();
}
}
} finally {
if (msg instanceof LastHttpContent) {
releaseChannelBackToPoolIfCallIsActive(ch, pool, callActiveHolder, "last content chunk sent", distributedSpanStackToUse, mdcContextToUse);
}
}
}
};
Consumer<Throwable> doErrorHandlingConsumer = (cause) -> {
Pair<Deque<Span>, Map<String, String>> originalThreadInfo = null;
try {
// Setup tracing and MDC so our log messages have the correct distributed trace info, etc.
originalThreadInfo = linkTracingAndMdcToCurrentThread(distributedSpanStackToUse, mdcContextToUse);
// call is fully processed should not trigger the behavior a second time.
if (callActiveHolder.heldObject) {
if (performSubSpanAroundDownstreamCalls) {
if (distributedSpanStackToUse == null || distributedSpanStackToUse.size() < 2)
Tracer.getInstance().completeRequestSpan();
else
Tracer.getInstance().completeSubSpan();
}
Tracer.getInstance().unregisterFromThread();
if (cause instanceof Errors.NativeIoException) {
// NativeIoExceptions are often setup to not have stack traces which is bad for debugging.
// Wrap it in a NativeIoExceptionWrapper that maps to a 503 since this is likely a busted
// connection and a second attempt should work.
cause = new NativeIoExceptionWrapper("Caught a NativeIoException in the downstream streaming call pipeline. Wrapped it in a " + "NativeIoExceptionWrapper so that it maps to a 503 and provides a usable stack trace " + "in the logs.", (Errors.NativeIoException) cause);
}
callback.unrecoverableErrorOccurred(cause, true);
} else {
if (cause instanceof DownstreamIdleChannelTimeoutException) {
logger.debug("A channel used for downstream calls will be closed because it was idle too long. " + "This is normal behavior and does not indicate a downstream call failure: {}", cause.toString());
} else {
logger.warn("Received exception in downstream call pipeline after the call was finished. " + "Not necessarily anything to worry about but in case it helps debugging the " + "exception was: {}", cause.toString());
}
}
} finally {
// Mark the channel as broken so it will be closed and removed from the pool when it is returned.
markChannelAsBroken(ch);
// Release it back to the pool if possible/necessary so the pool can do its usual cleanup.
releaseChannelBackToPoolIfCallIsActive(ch, pool, callActiveHolder, "error received in downstream pipeline: " + cause.toString(), distributedSpanStackToUse, mdcContextToUse);
// No matter what the cause is we want to make sure the channel is closed. Doing this raw ch.close()
// here will catch the cases where this channel does not have an active call but still needs to be
// closed (e.g. an idle channel timeout that happens in-between calls).
ch.close();
// Unhook the tracing and MDC stuff from this thread now that we're done.
unlinkTracingAndMdcFromCurrentThread(originalThreadInfo);
}
};
ChannelHandler errorHandler = new ChannelInboundHandlerAdapter() {
@Override
public void exceptionCaught(ChannelHandlerContext downstreamCallCtx, Throwable cause) throws Exception {
doErrorHandlingConsumer.accept(cause);
}
@Override
public void channelInactive(ChannelHandlerContext ctx) throws Exception {
if (logger.isDebugEnabled()) {
runnableWithTracingAndMdc(() -> logger.debug("Downstream channel closing. call_active={}, last_chunk_sent_downstream={}, channel_id={}", callActiveHolder.heldObject, lastChunkSentDownstreamHolder.heldObject, ctx.channel().toString()), distributedSpanStackToUse, mdcContextToUse).run();
}
// We only care if the channel was closed while the call was active.
if (callActiveHolder.heldObject)
doErrorHandlingConsumer.accept(new DownstreamChannelClosedUnexpectedlyException(ch));
super.channelInactive(ctx);
}
};
// Set up the HTTP client pipeline.
ChannelPipeline p = ch.pipeline();
List<String> registeredHandlerNames = p.names();
// couldn't be removed at that time because it wasn't in the channel's eventLoop.
if (registeredHandlerNames.contains(DOWNSTREAM_IDLE_CHANNEL_TIMEOUT_HANDLER_NAME)) {
ChannelHandler idleHandler = p.get(DOWNSTREAM_IDLE_CHANNEL_TIMEOUT_HANDLER_NAME);
if (idleHandler != null)
p.remove(idleHandler);
}
if (debugChannelLifecycleLoggingEnabled && !registeredHandlerNames.contains(DEBUG_LOGGER_HANDLER_NAME)) {
// Add the channel debug logger if desired.
p.addFirst(DEBUG_LOGGER_HANDLER_NAME, new LoggingHandler(DOWNSTREAM_CLIENT_CHANNEL_DEBUG_LOGGER_NAME, LogLevel.DEBUG));
}
// Add/replace a downstream call timeout detector.
addOrReplacePipelineHandler(new DownstreamIdleChannelTimeoutHandler(downstreamCallTimeoutMillis, () -> callActiveHolder.heldObject, true, "StreamingAsyncHttpClientChannel-call-timeout", distributedSpanStackToUse, mdcContextToUse), DOWNSTREAM_CALL_TIMEOUT_HANDLER_NAME, p, registeredHandlerNames);
if (isSecureHttpsCall) {
// SSL call. Make sure we add the SSL handler if necessary.
if (!registeredHandlerNames.contains(SSL_HANDLER_NAME)) {
if (clientSslCtx == null) {
if (relaxedHttpsValidation) {
clientSslCtx = SslContextBuilder.forClient().trustManager(InsecureTrustManagerFactory.INSTANCE).build();
} else {
TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
tmf.init((KeyStore) null);
clientSslCtx = SslContextBuilder.forClient().trustManager(tmf).build();
}
}
p.addAfter(DOWNSTREAM_CALL_TIMEOUT_HANDLER_NAME, SSL_HANDLER_NAME, clientSslCtx.newHandler(ch.alloc()));
}
} else {
// Not an SSL call. Remove the SSL handler if it's there.
if (registeredHandlerNames.contains(SSL_HANDLER_NAME))
p.remove(SSL_HANDLER_NAME);
}
// The HttpClientCodec handler deals with HTTP codec stuff so you don't have to. Set it up if it hasn't already
// been setup, and inspect it to make sure it's in a "ready to handle a new request" state. Some rare
// and currently unknown edgecases can cause us to hit this point with the HttpClientCodec in an unclean
// state, and if we barrel forward without cleaning this up the call will fail.
boolean pipelineContainsHttpClientCodec = registeredHandlerNames.contains(HTTP_CLIENT_CODEC_HANDLER_NAME);
boolean existingHttpClientCodecIsInBadState = false;
if (pipelineContainsHttpClientCodec) {
HttpClientCodec currentCodec = (HttpClientCodec) p.get(HTTP_CLIENT_CODEC_HANDLER_NAME);
int currentHttpClientCodecInboundState = determineHttpClientCodecInboundState(currentCodec);
if (currentHttpClientCodecInboundState != 0) {
runnableWithTracingAndMdc(() -> logger.warn("HttpClientCodec inbound state was not 0. It will be replaced with a fresh HttpClientCodec. " + "bad_httpclientcodec_inbound_state={}", currentHttpClientCodecInboundState), distributedSpanStackToUse, mdcContextToUse).run();
existingHttpClientCodecIsInBadState = true;
} else {
int currentHttpClientCodecOutboundState = determineHttpClientCodecOutboundState(currentCodec);
if (currentHttpClientCodecOutboundState != 0) {
runnableWithTracingAndMdc(() -> logger.warn("HttpClientCodec outbound state was not 0. It will be replaced with a fresh HttpClientCodec. " + "bad_httpclientcodec_outbound_state={}", currentHttpClientCodecOutboundState), distributedSpanStackToUse, mdcContextToUse).run();
existingHttpClientCodecIsInBadState = true;
}
}
}
// or replace it if it was in a bad state.
if (!pipelineContainsHttpClientCodec || existingHttpClientCodecIsInBadState) {
addOrReplacePipelineHandler(new HttpClientCodec(4096, 8192, 8192, true), HTTP_CLIENT_CODEC_HANDLER_NAME, p, registeredHandlerNames);
}
// Update the chunk sender handler and error handler to the newly created versions that know about the correct
// callback, dtrace info, etc to use for this request.
addOrReplacePipelineHandler(chunkSenderHandler, CHUNK_SENDER_HANDLER_NAME, p, registeredHandlerNames);
addOrReplacePipelineHandler(errorHandler, ERROR_HANDLER_NAME, p, registeredHandlerNames);
}
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