[GitHub] [camel] orpiske commented on a diff in pull request #9389: Micrometer Observation component

["orpiske (via GitHub)" <gi...@apache.org>]

orpiske commented on code in PR #9389:
URL: https://github.com/apache/camel/pull/9389#discussion_r1112012331


##########
components/camel-observation/src/test/java/org/apache/camel/observation/CamelMicrometerObservationTestSupport.java:
##########
@@ -0,0 +1,255 @@
+/*
+ * 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.camel.observation;
+
+import java.net.URI;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+import io.micrometer.core.instrument.MeterRegistry;
+import io.micrometer.core.instrument.observation.DefaultMeterObservationHandler;
+import io.micrometer.core.instrument.simple.SimpleMeterRegistry;
+import io.micrometer.observation.ObservationHandler;
+import io.micrometer.observation.ObservationRegistry;
+import io.micrometer.observation.tck.TestObservationRegistry;
+import io.micrometer.tracing.handler.PropagatingSenderTracingObservationHandler;
+import io.micrometer.tracing.otel.bridge.OtelBaggageManager;
+import io.micrometer.tracing.otel.bridge.OtelCurrentTraceContext;
+import io.micrometer.tracing.otel.bridge.OtelPropagator;
+import io.micrometer.tracing.otel.bridge.OtelTracer;
+import io.opentelemetry.api.common.AttributeKey;
+import io.opentelemetry.api.trace.Tracer;
+import io.opentelemetry.context.Context;
+import io.opentelemetry.context.propagation.ContextPropagators;
+import io.opentelemetry.extension.trace.propagation.B3Propagator;
+import io.opentelemetry.sdk.testing.exporter.InMemorySpanExporter;
+import io.opentelemetry.sdk.trace.ReadWriteSpan;
+import io.opentelemetry.sdk.trace.ReadableSpan;
+import io.opentelemetry.sdk.trace.SdkTracerProvider;
+import io.opentelemetry.sdk.trace.SpanProcessor;
+import io.opentelemetry.sdk.trace.data.SpanData;
+import io.opentelemetry.sdk.trace.export.SimpleSpanProcessor;
+import org.apache.camel.CamelContext;
+import org.apache.camel.test.junit5.CamelTestSupport;
+import org.apache.camel.tracing.SpanDecorator;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+
+class CamelMicrometerObservationTestSupport extends CamelTestSupport {
+
+    static final AttributeKey<String> CAMEL_URI_KEY = AttributeKey.stringKey("camel-uri");
+    static final AttributeKey<String> COMPONENT_KEY = AttributeKey.stringKey("component");
+    static final AttributeKey<String> PRE_KEY = AttributeKey.stringKey("pre");
+    static final AttributeKey<String> POST_KEY = AttributeKey.stringKey("post");
+
+    private InMemorySpanExporter inMemorySpanExporter = InMemorySpanExporter.create();
+    private SpanTestData[] expected;
+    private Tracer tracer;
+    private MicrometerObservationTracer micrometerObservationTracer;
+    private SdkTracerProvider tracerFactory;
+
+    private MeterRegistry meterRegistry = new SimpleMeterRegistry();
+
+    private ObservationRegistry observationRegistry;
+
+    CamelMicrometerObservationTestSupport(SpanTestData[] expected) {
+        this.expected = expected;
+    }
+
+    @Override
+    protected CamelContext createCamelContext() throws Exception {
+        CamelContext context = super.createCamelContext();
+        micrometerObservationTracer = new MicrometerObservationTracer();
+
+        tracerFactory = SdkTracerProvider.builder()
+                .addSpanProcessor(new LoggingSpanProcessor())
+                .addSpanProcessor(SimpleSpanProcessor.create(inMemorySpanExporter)).build();
+
+        tracer = tracerFactory.get("tracerTest");
+
+        observationRegistry = ObservationRegistry.create();
+        observationRegistry.observationConfig().observationHandler(new DefaultMeterObservationHandler(meterRegistry));
+
+        io.micrometer.tracing.Tracer otelTracer = otelTracer();
+        OtelPropagator otelPropagator = new OtelPropagator(ContextPropagators.create(B3Propagator.injectingSingleHeader()), tracer);
+        observationRegistry.observationConfig().observationHandler(new ObservationHandler.FirstMatchingCompositeObservationHandler(new CamelPropagatingSenderTracingObservationHandler<>(otelTracer, otelPropagator), new CamelPropagatingReceiverTracingObservationHandler<>(otelTracer, otelPropagator), new CamelDefaultTracingObservationHandler(otelTracer)));
+
+        micrometerObservationTracer.setObservationRegistry(observationRegistry);
+        // if you want baggage
+        micrometerObservationTracer.setTracer(otelTracer);
+        micrometerObservationTracer.setExcludePatterns(getExcludePatterns());
+        micrometerObservationTracer.addDecorator(new TestSEDASpanDecorator());
+        micrometerObservationTracer.init(context);
+        return context;
+    }
+
+    private OtelTracer otelTracer() {
+        OtelCurrentTraceContext otelCurrentTraceContext = new OtelCurrentTraceContext();
+        OtelBaggageManager otelBaggageManager = new OtelBaggageManager(otelCurrentTraceContext, Collections.emptyList(), Collections.emptyList());
+        return new OtelTracer(tracer, otelCurrentTraceContext, o -> {
+
+        }, otelBaggageManager);
+    }
+
+    protected Set<String> getExcludePatterns() {
+        return new HashSet<>();
+    }
+
+    protected void verify() {
+        verify(expected, false);
+    }
+
+    protected void verify(boolean async) {
+        verify(expected, async);
+    }
+
+    protected List<SpanData> verify(SpanTestData[] expected, boolean async) {
+        List<SpanData> spans = inMemorySpanExporter.getFinishedSpanItems();
+        spans.forEach(mockSpan -> {
+            System.out.println("Span: " + mockSpan);
+            System.out.println("\tComponent: " + mockSpan.getAttributes().get(COMPONENT_KEY));
+            System.out.println("\tTags: " + mockSpan.getAttributes());
+            System.out.println("\tLogs: ");

Review Comment:
   This should go to a log file, to make it easier for us in the CI. 



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