fix: Add OpenTracing extension

fixes #276

docs/modules/ROOT/pages/list-of-camel-quarkus-extensions.adoc

@@ -130,7 +130,7 @@ Number of Camel languages: 8 in 2 JAR artifacts (0 deprecated)
 == Miscellaneous Extensions
 
 // others: START
-Number of miscellaneous extensions: 4 in 4 JAR artifacts (0 deprecated)
+Number of miscellaneous extensions: 5 in 5 JAR artifacts (0 deprecated)
 
 [width="100%",cols="4,1,5",options="header"]
 |===
@@ -143,5 +143,7 @@ Number of miscellaneous extensions: 4 in 4 JAR artifacts (0 deprecated)
 | (camel-quarkus-reactive-executor) | 0.2.1 | To use Quarkus reactive executor with Camel
 
 | (camel-quarkus-microprofile-health) | 0.2.1 | Integration with the Quarkus MicroProfile Health extension
+
+| (camel-quarkus-opentracing) | 0.2.1 | Distributed tracing using OpenTracing
 |===
 // others: END

extensions/opentracing/deployment/pom.xml

@@ -0,0 +1,77 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+    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.
+
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.apache.camel.quarkus</groupId>
+        <artifactId>camel-quarkus-opentracing-parent</artifactId>
+        <version>0.2.1-SNAPSHOT</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+
+    <artifactId>camel-quarkus-opentracing-deployment</artifactId>
+    <name>Camel Quarkus :: OpenTracing :: Deployment</name>
+
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.apache.camel.quarkus</groupId>
+                <artifactId>camel-quarkus-bom-deployment</artifactId>
+                <version>${project.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <dependencies>
+        <dependency>
+            <groupId>io.quarkus</groupId>
+            <artifactId>quarkus-smallrye-opentracing-deployment</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.camel.quarkus</groupId>
+            <artifactId>camel-quarkus-core-deployment</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.camel.quarkus</groupId>
+            <artifactId>camel-quarkus-opentracing</artifactId>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <annotationProcessorPaths>
+                        <path>
+                            <groupId>io.quarkus</groupId>
+                            <artifactId>quarkus-extension-processor</artifactId>
+                            <version>${quarkus.version}</version>
+                        </path>
+                    </annotationProcessorPaths>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

extensions/opentracing/deployment/src/main/java/org/apache/camel/quarkus/component/opentracing/deployment/OpenTracingProcessor.java

@@ -0,0 +1,52 @@
+/*
+ * 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.quarkus.component.opentracing.deployment;
+
+import io.opentracing.Tracer;
+import io.quarkus.arc.deployment.BeanContainerBuildItem;
+import io.quarkus.deployment.annotations.BuildProducer;
+import io.quarkus.deployment.annotations.BuildStep;
+import io.quarkus.deployment.annotations.ExecutionTime;
+import io.quarkus.deployment.annotations.Record;
+import io.quarkus.deployment.builditem.FeatureBuildItem;
+import io.quarkus.deployment.builditem.substrate.SubstrateResourceBuildItem;
+
+import org.apache.camel.quarkus.component.opentracing.CamelOpenTracingConfig;
+import org.apache.camel.quarkus.component.opentracing.CamelOpenTracingRecorder;
+import org.apache.camel.quarkus.core.deployment.CamelBeanBuildItem;
+
+class OpenTracingProcessor {
+
+    private static final String FEATURE = "camel-opentracing";
+
+    @BuildStep
+    FeatureBuildItem feature() {
+        return new FeatureBuildItem(FEATURE);
+    }
+
+    @BuildStep
+    void process(BuildProducer<SubstrateResourceBuildItem> resource) {
+        resource.produce(new SubstrateResourceBuildItem("META-INF/services/org.apache.camel.opentracing.SpanDecorator"));
+    }
+
+    @BuildStep
+    @Record(ExecutionTime.STATIC_INIT)
+    CamelBeanBuildItem setupCamelOpenTracingTracer(CamelOpenTracingConfig config, CamelOpenTracingRecorder recorder, BeanContainerBuildItem beanContainer) {
+        // Configure & bind OpenTracingTracer to the registry so that Camel can use it
+        return new CamelBeanBuildItem("tracer", Tracer.class, recorder.createCamelOpenTracingTracer(config, beanContainer.getValue()));
+    }
+}

extensions/opentracing/pom.xml

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+    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.
+
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.apache.camel.quarkus</groupId>
+        <artifactId>camel-quarkus-build-parent</artifactId>
+        <version>0.2.1-SNAPSHOT</version>
+        <relativePath>../../poms/build-parent/pom.xml</relativePath>
+    </parent>
+
+    <artifactId>camel-quarkus-opentracing-parent</artifactId>
+    <name>Camel Quarkus :: OpenTracing</name>
+    <packaging>pom</packaging>
+
+    <modules>
+        <module>deployment</module>
+        <module>runtime</module>
+    </modules>
+</project>

extensions/opentracing/runtime/pom.xml

@@ -0,0 +1,87 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+
+    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.
+
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.apache.camel.quarkus</groupId>
+        <artifactId>camel-quarkus-opentracing-parent</artifactId>
+        <version>0.2.1-SNAPSHOT</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+
+    <artifactId>camel-quarkus-opentracing</artifactId>
+    <name>Camel Quarkus :: OpenTracing :: Runtime</name>
+    <description>Distributed tracing using OpenTracing</description>
+
+    <properties>
+        <firstVersion>0.2.1</firstVersion>
+    </properties>
+
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.apache.camel.quarkus</groupId>
+                <artifactId>camel-quarkus-bom</artifactId>
+                <version>${project.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.camel.quarkus</groupId>
+            <artifactId>camel-quarkus-core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.quarkus</groupId>
+            <artifactId>quarkus-smallrye-opentracing</artifactId>
+        </dependency>
+
+        <!-- Camel -->
+        <dependency>
+            <groupId>org.apache.camel</groupId>
+            <artifactId>camel-opentracing</artifactId>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>io.quarkus</groupId>
+                <artifactId>quarkus-bootstrap-maven-plugin</artifactId>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <annotationProcessorPaths>
+                        <path>
+                            <groupId>io.quarkus</groupId>
+                            <artifactId>quarkus-extension-processor</artifactId>
+                            <version>${quarkus.version}</version>
+                        </path>
+                    </annotationProcessorPaths>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+</project>

extensions/opentracing/runtime/src/main/java/org/apache/camel/quarkus/component/opentracing/CamelOpenTracingConfig.java

@@ -0,0 +1,39 @@
+/*
+ * 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.quarkus.component.opentracing;
+
+import java.util.List;
+
+import io.quarkus.runtime.annotations.ConfigItem;
+import io.quarkus.runtime.annotations.ConfigPhase;
+import io.quarkus.runtime.annotations.ConfigRoot;
+
+@ConfigRoot(name = "camel.opentracing", phase = ConfigPhase.BUILD_AND_RUN_TIME_FIXED)
+public final class CamelOpenTracingConfig {
+
+    /**
+     * Sets whether header keys need to be encoded
+     */
+    @ConfigItem(defaultValue = "false")
+    public boolean encoding;
+
+    /**
+     * Sets whether to disable tracing for endpoint URIs that match the given patterns
+     */
+    @ConfigItem
+    public List<String> excludePatterns;
+}

extensions/opentracing/runtime/src/main/java/org/apache/camel/quarkus/component/opentracing/CamelOpenTracingRecorder.java

@@ -0,0 +1,43 @@
+/*
+ * 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.quarkus.component.opentracing;
+
+import java.util.LinkedHashSet;
+
+import io.opentracing.Tracer;
+import io.quarkus.arc.runtime.BeanContainer;
+import io.quarkus.runtime.RuntimeValue;
+import io.quarkus.runtime.annotations.Recorder;
+
+import org.apache.camel.opentracing.OpenTracingTracer;
+
+@Recorder
+public class CamelOpenTracingRecorder {
+
+    public RuntimeValue<OpenTracingTracer> createCamelOpenTracingTracer(CamelOpenTracingConfig camelOpenTracingConfig, BeanContainer beanContainer) {
+        Tracer tracer = beanContainer.instance(Tracer.class);
+        OpenTracingTracer openTracingTracer = new OpenTracingTracer();
+        if (tracer != null) {
+            openTracingTracer.setTracer(tracer);
+            openTracingTracer.setEncoding(camelOpenTracingConfig.encoding);
+            if (camelOpenTracingConfig.excludePatterns != null) {
+                openTracingTracer.setExcludePatterns(new LinkedHashSet<>(camelOpenTracingConfig.excludePatterns));
+            }
+        }
+        return new RuntimeValue<>(openTracingTracer);
+    }
+}

extensions/opentracing/runtime/src/main/java/org/apache/camel/quarkus/component/opentracing/PlatformHttpSpanDecorator.java

@@ -0,0 +1,30 @@
+/*
+ * 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.quarkus.component.opentracing;
+
+import org.apache.camel.opentracing.decorators.AbstractHttpSpanDecorator;
+
+/**
+ * Camel OpenTracing SpanDecorator for the platform-http component
+ */
+public class PlatformHttpSpanDecorator extends AbstractHttpSpanDecorator {
+
+    @Override
+    public String getComponent() {
+        return "platform-http";
+    }
+}