jbonofre commented on code in PR #1769: URL: https://github.com/apache/activemq/pull/1769#discussion_r3063611191
########## activemq-opentelemetry/src/main/java/org/apache/activemq/broker/util/opentelemetry/OpenTelemetryBrokerPlugin.java: ########## @@ -0,0 +1,202 @@ +/** + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.apache.activemq.broker.util.opentelemetry; + +import java.util.concurrent.ConcurrentHashMap; + +import io.opentelemetry.api.GlobalOpenTelemetry; +import io.opentelemetry.api.trace.Span; +import io.opentelemetry.api.trace.SpanBuilder; +import io.opentelemetry.api.trace.SpanKind; +import io.opentelemetry.api.trace.StatusCode; +import io.opentelemetry.api.trace.Tracer; +import io.opentelemetry.context.Context; +import io.opentelemetry.context.propagation.TextMapPropagator; +import org.apache.activemq.broker.BrokerPluginSupport; +import org.apache.activemq.broker.ConsumerBrokerExchange; +import org.apache.activemq.broker.ProducerBrokerExchange; +import org.apache.activemq.command.Message; +import org.apache.activemq.command.MessageAck; +import org.apache.activemq.command.MessageDispatch; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +/** + * A broker plugin that provides OpenTelemetry distributed tracing support. + * Traces message send, dispatch, and acknowledge operations with proper + * context propagation via W3C TraceContext. + * + * @org.apache.xbean.XBean element="openTelemetryPlugin" + */ +public class OpenTelemetryBrokerPlugin extends BrokerPluginSupport { + + private static final Logger LOG = LoggerFactory.getLogger(OpenTelemetryBrokerPlugin.class); + private static final String INSTRUMENTATION_NAME = "org.apache.activemq"; + + private boolean traceProducer = true; + private boolean traceConsumer = true; + private boolean traceAcknowledge = true; + + private final ConcurrentHashMap<MessageDispatch, Span> dispatchSpans = new ConcurrentHashMap<>(); + + public boolean isTraceProducer() { + return traceProducer; + } + + public void setTraceProducer(boolean traceProducer) { + this.traceProducer = traceProducer; + } + + public boolean isTraceConsumer() { + return traceConsumer; + } + + public void setTraceConsumer(boolean traceConsumer) { + this.traceConsumer = traceConsumer; + } + + public boolean isTraceAcknowledge() { + return traceAcknowledge; + } + + public void setTraceAcknowledge(boolean traceAcknowledge) { + this.traceAcknowledge = traceAcknowledge; + } + + @Override + public void send(ProducerBrokerExchange producerExchange, Message messageSend) throws Exception { + if (!traceProducer) { + super.send(producerExchange, messageSend); + return; + } + + TextMapPropagator propagator = GlobalOpenTelemetry.getPropagators().getTextMapPropagator(); + Tracer tracer = GlobalOpenTelemetry.getTracer(INSTRUMENTATION_NAME); + + // Extract any existing context from the message (e.g., set by client) + Context parentContext = propagator.extract(Context.current(), messageSend, ActiveMQMessageTextMapGetter.INSTANCE); + + String destinationName = messageSend.getDestination().getPhysicalName(); + SpanBuilder spanBuilder = tracer.spanBuilder(destinationName + " publish") + .setSpanKind(SpanKind.PRODUCER) + .setParent(parentContext) + .setAttribute("messaging.system", "activemq") + .setAttribute("messaging.destination.name", destinationName) + .setAttribute("messaging.operation", "publish"); + + if (messageSend.getMessageId() != null) { + spanBuilder.setAttribute("messaging.message.id", messageSend.getMessageId().toString()); + } + if (producerExchange.getConnectionContext() != null + && producerExchange.getConnectionContext().getClientId() != null) { + spanBuilder.setAttribute("messaging.client_id", producerExchange.getConnectionContext().getClientId()); + } + + Span span = spanBuilder.startSpan(); + try { + // Inject trace context into the message for downstream propagation + Context contextWithSpan = parentContext.with(span); + propagator.inject(contextWithSpan, messageSend, ActiveMQMessageTextMapSetter.INSTANCE); + + super.send(producerExchange, messageSend); + } catch (Exception e) { + span.setStatus(StatusCode.ERROR, e.getMessage()); + span.recordException(e); + throw e; + } finally { + span.end(); + } + } + + @Override + public void preProcessDispatch(MessageDispatch messageDispatch) { + if (traceConsumer && messageDispatch != null && messageDispatch.getMessage() != null) { + try { + TextMapPropagator propagator = GlobalOpenTelemetry.getPropagators().getTextMapPropagator(); + Tracer tracer = GlobalOpenTelemetry.getTracer(INSTRUMENTATION_NAME); + + Message message = messageDispatch.getMessage(); + Context extractedContext = propagator.extract(Context.current(), message, ActiveMQMessageTextMapGetter.INSTANCE); + + String destinationName = message.getDestination().getPhysicalName(); + SpanBuilder spanBuilder = tracer.spanBuilder(destinationName + " deliver") Review Comment: Yes, it's multiple messages per topic here. -- This is an automated message from the Apache Git Service. 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