com.jashmore.sqs.brave.SendMessageBatchTracingExecutionInterceptor Maven / Gradle / Ivy
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package com.jashmore.sqs.brave;
import static java.util.stream.Collectors.toMap;
import brave.Span;
import brave.Tracing;
import brave.propagation.TraceContext;
import com.jashmore.sqs.brave.propogation.SendMessageRemoteSetter;
import software.amazon.awssdk.core.SdkRequest;
import software.amazon.awssdk.core.interceptor.Context;
import software.amazon.awssdk.core.interceptor.ExecutionAttribute;
import software.amazon.awssdk.core.interceptor.ExecutionAttributes;
import software.amazon.awssdk.core.interceptor.ExecutionInterceptor;
import software.amazon.awssdk.http.SdkHttpResponse;
import software.amazon.awssdk.services.sqs.model.BatchResultErrorEntry;
import software.amazon.awssdk.services.sqs.model.MessageAttributeValue;
import software.amazon.awssdk.services.sqs.model.SendMessageBatchRequest;
import software.amazon.awssdk.services.sqs.model.SendMessageBatchRequestEntry;
import software.amazon.awssdk.services.sqs.model.SendMessageBatchResponse;
import software.amazon.awssdk.services.sqs.model.SendMessageBatchResultEntry;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
/**
* {@link ExecutionInterceptor} that is used to create spans for the {@link SendMessageBatchRequest}
* and each individual message in the request.
*
* Information about each message's span is included in the message attributes of the message
* for consumers to continue the trace.
*/
public class SendMessageBatchTracingExecutionInterceptor implements ExecutionInterceptor {
static final ExecutionAttribute> MESSAGE_SPANS_EXECUTION_ATTRIBUTE = new ExecutionAttribute<>("message-spans");
private final Tracing tracing;
private final SpanDecorator spanDecorator;
private final TraceContext.Injector> messageAttributeInjector;
public SendMessageBatchTracingExecutionInterceptor(final Tracing tracing) {
this(tracing, SpanDecorator.DEFAULT);
}
public SendMessageBatchTracingExecutionInterceptor(final Tracing tracing,
final SpanDecorator spanDecorator) {
this(tracing, spanDecorator, SendMessageRemoteSetter.create(tracing));
}
public SendMessageBatchTracingExecutionInterceptor(final Tracing tracing,
final SpanDecorator spanDecorator,
final TraceContext.Injector> injector) {
this.tracing = tracing;
this.spanDecorator = spanDecorator;
this.messageAttributeInjector = injector;
}
@Override
public void beforeExecution(final Context.BeforeExecution context, final ExecutionAttributes executionAttributes) {
if (!(context.request() instanceof SendMessageBatchRequest)) {
return;
}
final SendMessageBatchRequest request = (SendMessageBatchRequest) context.request();
final Map messageSpans = request.entries().stream()
.collect(toMap(SendMessageBatchRequestEntry::id, entry -> startSpanForMessage(request, entry)));
executionAttributes.putAttribute(MESSAGE_SPANS_EXECUTION_ATTRIBUTE, messageSpans);
}
@Override
public SdkRequest modifyRequest(final Context.ModifyRequest context, final ExecutionAttributes executionAttributes) {
if (!(context.request() instanceof SendMessageBatchRequest)) {
return context.request();
}
final Map messageSpans = executionAttributes.getAttribute(MESSAGE_SPANS_EXECUTION_ATTRIBUTE);
if (messageSpans == null) {
// someone deleted our attribute...
return context.request();
}
final SendMessageBatchRequest request = (SendMessageBatchRequest) context.request();
final List updatedEntries = request.entries().stream()
.map(requestEntry -> injectSpanInformationIntoMessage(requestEntry,
messageSpans.get(requestEntry.id())))
.collect(Collectors.toList());
return request.toBuilder()
.entries(updatedEntries)
.build();
}
@Override
public void afterExecution(final Context.AfterExecution context, final ExecutionAttributes executionAttributes) {
if (!(context.request() instanceof SendMessageBatchRequest)) {
return;
}
final SendMessageBatchRequest request = (SendMessageBatchRequest) context.request();
final Map individualMessageSpans =
executionAttributes.getAttribute(MESSAGE_SPANS_EXECUTION_ATTRIBUTE);
if (individualMessageSpans == null) {
// someone deleted our attribute...
return;
}
if (!context.httpResponse().isSuccessful()) {
individualMessageSpans.values()
.forEach(
span -> {
try {
spanDecorator.decorateRequestFailedMessageSpan(request,
context.httpResponse(), span);
span.error(new RuntimeException("Error placing message onto SQS queue"));
} finally {
span.finish();
}
});
return;
}
final SendMessageBatchResponse response = (SendMessageBatchResponse) context.response();
response.successful().forEach(result -> {
final Span messageSpan = individualMessageSpans.get(result.id());
if (messageSpan == null) {
// for some reason the individual message's span cannot be found
return;
}
try {
spanDecorator.decorateMessageSuccessfulSpan(response, context.httpResponse(),
result, messageSpan);
} finally {
messageSpan.finish();
}
});
response.failed().forEach(result -> {
final Span messageSpan = individualMessageSpans.get(result.id());
if (messageSpan == null) {
// for some reason the individual message's span cannot be found
return;
}
try {
spanDecorator.decorateMessageFailureSpan(response, context.httpResponse(), result,
messageSpan);
messageSpan.error(new RuntimeException("Error placing message onto SQS queue"));
} finally {
messageSpan.finish();
}
});
}
private Span startSpanForMessage(final SendMessageBatchRequest request, final SendMessageBatchRequestEntry requestEntry) {
final Span messageSpan = tracing.tracer().nextSpan();
if (!messageSpan.isNoop()) {
spanDecorator.decorateMessageSpan(request, requestEntry, messageSpan);
}
messageSpan.start();
return messageSpan;
}
private SendMessageBatchRequestEntry injectSpanInformationIntoMessage(
final SendMessageBatchRequestEntry entry, final Span span) {
final Map currentMessageAttributes =
new HashMap<>(entry.messageAttributes());
messageAttributeInjector.inject(span.context(), currentMessageAttributes);
return entry.toBuilder()
.messageAttributes(currentMessageAttributes)
.build();
}
/**
* Decorator that can be used to override the default span configurations, otherwise the {@link
* SpanDecorator#DEFAULT} can be used.
*
* This would be helpful if you want to send extra information or remove some of the tags
* being sent as they are not relevant for your use case.
*/
@SuppressWarnings("unused")
public interface SpanDecorator {
SpanDecorator DEFAULT = new SpanDecorator() {
};
/**
* Decorate the message span before the message is sent to SQS.
*
* @param request the original request
* @param entry the entry for the message being handled
* @param span the span corresponding to this message
*/
default void decorateMessageSpan(final SendMessageBatchRequest request,
final SendMessageBatchRequestEntry entry,
final Span span) {
span.kind(Span.Kind.PRODUCER);
span.name("sqs-send-message-batch");
span.remoteServiceName("aws-sqs");
span.tag("queue.url", request.queueUrl());
span.tag("message.request.id", entry.id());
}
/**
* Decorator called for each message when the entire HTTP request to SQS fails.
*
* @param request the request that was sent to SQS
* @param httpResponse the http response that indicates the failure
* @param span the span to apply decorations to
*/
default void decorateRequestFailedMessageSpan(final SendMessageBatchRequest request,
final SdkHttpResponse httpResponse,
final Span span) {
span.tag("response.code", String.valueOf(httpResponse.statusCode()));
}
/**
* Decorator called for each message that was successfully published to SQS.
*
* @param response the response for the request
* @param httpResponse the underlying http response
* @param entry the message entry that was a success
* @param span the span corresponding to this message
*/
default void decorateMessageSuccessfulSpan(final SendMessageBatchResponse response,
final SdkHttpResponse httpResponse,
final SendMessageBatchResultEntry entry,
final Span span) {
span.tag("message.id", entry.messageId());
}
/**
* Decorator called for each message that failed to be published to SQS.
*
*
Note that this is only called if the underlying HTTP was a success but individual
* messages failed to be processed.
*
* @param response the response for the request
* @param httpResponse the underlying http response
* @param entry the message entry that was a failure
* @param span the span corresponding to this message
*/
default void decorateMessageFailureSpan(final SendMessageBatchResponse response,
final SdkHttpResponse httpResponse,
final BatchResultErrorEntry entry,
final Span span) {
}
}
}