CAMEL-20367: Adds observability tests (#15668)

dsl/camel-jbang/camel-jbang-it/src/test/java/org/apache/camel/dsl/jbang/it/MetricsObservabilityITCase.java

@@ -0,0 +1,45 @@
+/*
+ * 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.dsl.jbang.it;
+
+import java.io.IOException;
+
+import org.apache.camel.dsl.jbang.it.support.JBangTestSupport;
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+public class MetricsObservabilityITCase extends JBangTestSupport {
+
+    @Test
+    public void metricsTest() throws IOException {
+        copyResourceInDataFolder(TestResources.SERVER_ROUTE);
+        executeBackground(String.format("run %s/server.yaml --metrics", mountPoint()));
+        checkLogContains("http://0.0.0.0:8080/q/metrics");
+        Assertions.assertThat(
+                execInHost(String.format("curl http://localhost:%s/q/metrics", containerService.getDevConsolePort())))
+                .as("server should list metrics")
+                .contains("# HELP camel_exchanges_total Total number of processed exchanges");
+    }
+
+    @Test
+    public void circuitBreakerTest() throws IOException {
+        copyResourceInDataFolder(TestResources.CIRCUIT_BREAKER);
+        executeBackground(String.format("run %s/CircuitBreakerRoute.java --dep=camel-resilience4j", mountPoint()));
+        checkLogContains("(CircuitBreakerRoute) started");
+        checkCommandOutputs("get circuit-breaker", "resilience4j");
+    }
+}

dsl/camel-jbang/camel-jbang-it/src/test/java/org/apache/camel/dsl/jbang/it/support/JBangTestSupport.java

@@ -99,7 +99,8 @@ protected enum TestResources {
         MQQT_CONSUMER("mqttConsumer.yaml", "/jbang/it/mqttConsumer.yaml"),
         BUILD_GRADLE("build.gradle", "/jbang/it/maven-gradle/build.gradle"),
         DIR_ROUTE("FromDirectoryRoute.java", "/jbang/it/from-source-dir/FromDirectoryRoute.java"),
-        SERVER_ROUTE("server.yaml", "/jbang/it/server.yaml");
+        SERVER_ROUTE("server.yaml", "/jbang/it/server.yaml"),
+        CIRCUIT_BREAKER("CircuitBreakerRoute.java", "/jbang/it/CircuitBreakerRoute.java");
 
         private String name;
         private String resPath;

dsl/camel-jbang/camel-jbang-it/src/test/resources/jbang/it/CircuitBreakerRoute.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.
+ */
+import org.apache.camel.builder.RouteBuilder;
+
+public class CircuitBreakerRoute extends RouteBuilder {
+    @Override
+    public void configure() {
+        from("direct:start")
+                .circuitBreaker()
+                .to("http://localhost:8080/faulty")
+                .onFallback()
+                .transform().constant("Fallback message")
+                .end()
+                .to("mock:result");
+    }
+}