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davsclaus pushed a commit to branch mm
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commit 17cb3fd9c112b4abc6a161e3d2db9d5494f74cb7
Author: Claus Ibsen <[email protected]>
AuthorDate: Wed Nov 15 21:01:05 2023 +0100

    CAMEL-20105: camel-micromemter - Make it easier to configure for camel-main
---
 .../prometheus/MicrometerPrometheusConfigurer.java |  73 ++++++++++
 ...nent.micrometer.prometheus.MicrometerPrometheus |   2 +
 .../org/apache/camel/micrometer-prometheus         |   2 +
 .../prometheus/MicrometerPrometheus.java           | 152 +++++++++++++++++++++
 .../org/apache/camel/spi/CamelMetricsService.java  |  27 ++++
 .../org/apache/camel/main/BaseMainSupport.java     |  23 +++-
 parent/pom.xml                                     |   1 -
 7 files changed, 278 insertions(+), 2 deletions(-)

diff --git 
a/components/camel-micrometer-prometheus/src/generated/java/org/apache/camel/component/micrometer/prometheus/MicrometerPrometheusConfigurer.java
 
b/components/camel-micrometer-prometheus/src/generated/java/org/apache/camel/component/micrometer/prometheus/MicrometerPrometheusConfigurer.java
new file mode 100644
index 00000000000..2f934e1d64e
--- /dev/null
+++ 
b/components/camel-micrometer-prometheus/src/generated/java/org/apache/camel/component/micrometer/prometheus/MicrometerPrometheusConfigurer.java
@@ -0,0 +1,73 @@
+/* Generated by camel build tools - do NOT edit this file! */
+package org.apache.camel.component.micrometer.prometheus;
+
+import java.util.Map;
+
+import org.apache.camel.CamelContext;
+import org.apache.camel.spi.ExtendedPropertyConfigurerGetter;
+import org.apache.camel.spi.PropertyConfigurerGetter;
+import org.apache.camel.spi.ConfigurerStrategy;
+import org.apache.camel.spi.GeneratedPropertyConfigurer;
+import org.apache.camel.util.CaseInsensitiveMap;
+import org.apache.camel.component.micrometer.prometheus.MicrometerPrometheus;
+
+/**
+ * Generated by camel build tools - do NOT edit this file!
+ */
+@SuppressWarnings("unchecked")
+public class MicrometerPrometheusConfigurer extends 
org.apache.camel.support.component.PropertyConfigurerSupport implements 
GeneratedPropertyConfigurer, PropertyConfigurerGetter {
+
+    @Override
+    public boolean configure(CamelContext camelContext, Object obj, String 
name, Object value, boolean ignoreCase) {
+        org.apache.camel.component.micrometer.prometheus.MicrometerPrometheus 
target = 
(org.apache.camel.component.micrometer.prometheus.MicrometerPrometheus) obj;
+        switch (ignoreCase ? name.toLowerCase() : name) {
+        case "camelcontext":
+        case "CamelContext": target.setCamelContext(property(camelContext, 
org.apache.camel.CamelContext.class, value)); return true;
+        case "enableexchangeeventnotifier":
+        case "EnableExchangeEventNotifier": 
target.setEnableExchangeEventNotifier(property(camelContext, boolean.class, 
value)); return true;
+        case "enablemessagehistory":
+        case "EnableMessageHistory": 
target.setEnableMessageHistory(property(camelContext, boolean.class, value)); 
return true;
+        case "enablerouteeventnotifier":
+        case "EnableRouteEventNotifier": 
target.setEnableRouteEventNotifier(property(camelContext, boolean.class, 
value)); return true;
+        case "enableroutepolicy":
+        case "EnableRoutePolicy": 
target.setEnableRoutePolicy(property(camelContext, boolean.class, value)); 
return true;
+        default: return false;
+        }
+    }
+
+    @Override
+    public Class<?> getOptionType(String name, boolean ignoreCase) {
+        switch (ignoreCase ? name.toLowerCase() : name) {
+        case "camelcontext":
+        case "CamelContext": return org.apache.camel.CamelContext.class;
+        case "enableexchangeeventnotifier":
+        case "EnableExchangeEventNotifier": return boolean.class;
+        case "enablemessagehistory":
+        case "EnableMessageHistory": return boolean.class;
+        case "enablerouteeventnotifier":
+        case "EnableRouteEventNotifier": return boolean.class;
+        case "enableroutepolicy":
+        case "EnableRoutePolicy": return boolean.class;
+        default: return null;
+        }
+    }
+
+    @Override
+    public Object getOptionValue(Object obj, String name, boolean ignoreCase) {
+        org.apache.camel.component.micrometer.prometheus.MicrometerPrometheus 
target = 
(org.apache.camel.component.micrometer.prometheus.MicrometerPrometheus) obj;
+        switch (ignoreCase ? name.toLowerCase() : name) {
+        case "camelcontext":
+        case "CamelContext": return target.getCamelContext();
+        case "enableexchangeeventnotifier":
+        case "EnableExchangeEventNotifier": return 
target.isEnableExchangeEventNotifier();
+        case "enablemessagehistory":
+        case "EnableMessageHistory": return target.isEnableMessageHistory();
+        case "enablerouteeventnotifier":
+        case "EnableRouteEventNotifier": return 
target.isEnableRouteEventNotifier();
+        case "enableroutepolicy":
+        case "EnableRoutePolicy": return target.isEnableRoutePolicy();
+        default: return null;
+        }
+    }
+}
+
diff --git 
a/components/camel-micrometer-prometheus/src/generated/resources/META-INF/services/org/apache/camel/configurer/org.apache.camel.component.micrometer.prometheus.MicrometerPrometheus
 
b/components/camel-micrometer-prometheus/src/generated/resources/META-INF/services/org/apache/camel/configurer/org.apache.camel.component.micrometer.prometheus.MicrometerPrometheus
new file mode 100644
index 00000000000..9f7e2f12222
--- /dev/null
+++ 
b/components/camel-micrometer-prometheus/src/generated/resources/META-INF/services/org/apache/camel/configurer/org.apache.camel.component.micrometer.prometheus.MicrometerPrometheus
@@ -0,0 +1,2 @@
+# Generated by camel build tools - do NOT edit this file!
+class=org.apache.camel.component.micrometer.prometheus.MicrometerPrometheusConfigurer
diff --git 
a/components/camel-micrometer-prometheus/src/generated/resources/META-INF/services/org/apache/camel/micrometer-prometheus
 
b/components/camel-micrometer-prometheus/src/generated/resources/META-INF/services/org/apache/camel/micrometer-prometheus
new file mode 100644
index 00000000000..aef3c09ef27
--- /dev/null
+++ 
b/components/camel-micrometer-prometheus/src/generated/resources/META-INF/services/org/apache/camel/micrometer-prometheus
@@ -0,0 +1,2 @@
+# Generated by camel build tools - do NOT edit this file!
+class=org.apache.camel.component.micrometer.prometheus.MicrometerPrometheus
diff --git 
a/components/camel-micrometer-prometheus/src/main/java/org/apache/camel/component/micrometer/prometheus/MicrometerPrometheus.java
 
b/components/camel-micrometer-prometheus/src/main/java/org/apache/camel/component/micrometer/prometheus/MicrometerPrometheus.java
new file mode 100644
index 00000000000..b6fee55cb02
--- /dev/null
+++ 
b/components/camel-micrometer-prometheus/src/main/java/org/apache/camel/component/micrometer/prometheus/MicrometerPrometheus.java
@@ -0,0 +1,152 @@
+/*
+ * 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.component.micrometer.prometheus;
+
+import io.micrometer.prometheus.PrometheusConfig;
+import io.micrometer.prometheus.PrometheusMeterRegistry;
+import org.apache.camel.CamelContext;
+import org.apache.camel.StaticService;
+import org.apache.camel.api.management.ManagedResource;
+import 
org.apache.camel.component.micrometer.eventnotifier.MicrometerExchangeEventNotifier;
+import 
org.apache.camel.component.micrometer.eventnotifier.MicrometerRouteEventNotifier;
+import 
org.apache.camel.component.micrometer.messagehistory.MicrometerMessageHistoryFactory;
+import 
org.apache.camel.component.micrometer.routepolicy.MicrometerRoutePolicyFactory;
+import org.apache.camel.spi.CamelMetricsService;
+import org.apache.camel.spi.Configurer;
+import org.apache.camel.spi.ManagementStrategy;
+import org.apache.camel.spi.Metadata;
+import org.apache.camel.spi.annotations.JdkService;
+import org.apache.camel.support.service.ServiceSupport;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+@JdkService("micrometer-prometheus")
+@Configurer
+@ManagedResource(description = "Micrometer Metrics Prometheus")
+public class MicrometerPrometheus extends ServiceSupport implements 
CamelMetricsService, StaticService {
+
+    private static final Logger LOG = 
LoggerFactory.getLogger(MicrometerPrometheus.class);
+
+    // TODO: option to configure prometheus
+    // TODO: context-path / port for http scrape service
+
+    private CamelContext camelContext;
+    private final PrometheusMeterRegistry meterRegistry = new 
PrometheusMeterRegistry(PrometheusConfig.DEFAULT);
+
+    @Metadata(defaultValue = "true")
+    private boolean enableRoutePolicy = true;
+    @Metadata(defaultValue = "false")
+    private boolean enableMessageHistory;
+    @Metadata(defaultValue = "true")
+    private boolean enableExchangeEventNotifier = true;
+    @Metadata(defaultValue = "true")
+    private boolean enableRouteEventNotifier = true;
+
+    @Override
+    public CamelContext getCamelContext() {
+        return camelContext;
+    }
+
+    @Override
+    public void setCamelContext(CamelContext camelContext) {
+        this.camelContext = camelContext;
+    }
+
+    public boolean isEnableRoutePolicy() {
+        return enableRoutePolicy;
+    }
+
+    /**
+     * Set whether to enable the MicrometerRoutePolicyFactory for capturing 
metrics on route processing times.
+     */
+    public void setEnableRoutePolicy(boolean enableRoutePolicy) {
+        this.enableRoutePolicy = enableRoutePolicy;
+    }
+
+    public boolean isEnableMessageHistory() {
+        return enableMessageHistory;
+    }
+
+    /**
+     * Set whether to enable the MicrometerMessageHistoryFactory for capturing 
metrics on individual route node
+     * processing times.
+     *
+     * Depending on the number of configured route nodes, there is the 
potential to create a large volume of metrics.
+     * Therefore, this option is disabled by default.
+     */
+    public void setEnableMessageHistory(boolean enableMessageHistory) {
+        this.enableMessageHistory = enableMessageHistory;
+    }
+
+    public boolean isEnableExchangeEventNotifier() {
+        return enableExchangeEventNotifier;
+    }
+
+    /**
+     * Set whether to enable the MicrometerExchangeEventNotifier for capturing 
metrics on exchange processing times.
+     */
+    public void setEnableExchangeEventNotifier(boolean 
enableExchangeEventNotifier) {
+        this.enableExchangeEventNotifier = enableExchangeEventNotifier;
+    }
+
+    public boolean isEnableRouteEventNotifier() {
+        return enableRouteEventNotifier;
+    }
+
+    /**
+     * Set whether to enable the MicrometerRouteEventNotifier for capturing 
metrics on the total number of routes and
+     * total number of routes running.
+     */
+    public void setEnableRouteEventNotifier(boolean enableRouteEventNotifier) {
+        this.enableRouteEventNotifier = enableRouteEventNotifier;
+    }
+
+    @Override
+    protected void doStart() throws Exception {
+        super.doStart();
+
+        if (isEnableRoutePolicy()) {
+            MicrometerRoutePolicyFactory factory = new 
MicrometerRoutePolicyFactory();
+            factory.setMeterRegistry(meterRegistry);
+            camelContext.addRoutePolicyFactory(factory);
+        }
+
+        ManagementStrategy managementStrategy = 
camelContext.getManagementStrategy();
+        if (isEnableExchangeEventNotifier()) {
+            MicrometerExchangeEventNotifier notifier = new 
MicrometerExchangeEventNotifier();
+            notifier.setMeterRegistry(meterRegistry);
+            managementStrategy.addEventNotifier(notifier);
+        }
+
+        if (isEnableRouteEventNotifier()) {
+            MicrometerRouteEventNotifier notifier = new 
MicrometerRouteEventNotifier();
+            notifier.setMeterRegistry(meterRegistry);
+            managementStrategy.addEventNotifier(notifier);
+        }
+
+        if (isEnableMessageHistory()) {
+            if (!camelContext.isMessageHistory()) {
+                camelContext.setMessageHistory(true);
+            }
+            MicrometerMessageHistoryFactory factory = new 
MicrometerMessageHistoryFactory();
+            factory.setMeterRegistry(meterRegistry);
+            camelContext.setMessageHistoryFactory(factory);
+        }
+
+        LOG.info("MicrometerPrometheus enabled");
+    }
+}
diff --git 
a/core/camel-api/src/generated/java/org/apache/camel/spi/CamelMetricsService.java
 
b/core/camel-api/src/generated/java/org/apache/camel/spi/CamelMetricsService.java
new file mode 100644
index 00000000000..9dcf87829c5
--- /dev/null
+++ 
b/core/camel-api/src/generated/java/org/apache/camel/spi/CamelMetricsService.java
@@ -0,0 +1,27 @@
+/*
+ * 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.spi;
+
+import org.apache.camel.CamelContextAware;
+import org.apache.camel.Service;
+
+/**
+ * A Camel metrics service is a factory for micrometer metrics.
+ */
+public interface CamelMetricsService extends Service, CamelContextAware {
+
+}
diff --git 
a/core/camel-main/src/main/java/org/apache/camel/main/BaseMainSupport.java 
b/core/camel-main/src/main/java/org/apache/camel/main/BaseMainSupport.java
index fe09836d7f0..660fa08e5f6 100644
--- a/core/camel-main/src/main/java/org/apache/camel/main/BaseMainSupport.java
+++ b/core/camel-main/src/main/java/org/apache/camel/main/BaseMainSupport.java
@@ -57,6 +57,7 @@ import org.apache.camel.spi.AutowiredLifecycleStrategy;
 import org.apache.camel.spi.BacklogDebugger;
 import org.apache.camel.spi.CamelBeanPostProcessor;
 import org.apache.camel.spi.CamelEvent;
+import org.apache.camel.spi.CamelMetricsService;
 import org.apache.camel.spi.CamelTracingService;
 import org.apache.camel.spi.ContextReloadStrategy;
 import org.apache.camel.spi.DataFormat;
@@ -1420,7 +1421,13 @@ public abstract class BaseMainSupport extends 
BaseService {
         }
         boolean enabled = obj != null ? 
CamelContextHelper.parseBoolean(camelContext, obj.toString()) : true;
         if (enabled) {
-            // TODO:
+            CamelMetricsService micrometer = 
resolveMicrometerService(camelContext);
+            setPropertiesOnTarget(camelContext, micrometer, metricsProperties, 
"camel.metrics.", failIfNotSet, true,
+                    autoConfiguredProperties);
+            if (camelContext.hasService(CamelMetricsService.class) == null) {
+                // add as service so micrometer can be active
+                camelContext.addService(micrometer, true, true);
+            }
         }
     }
 
@@ -2079,6 +2086,20 @@ public abstract class BaseMainSupport extends 
BaseService {
         return answer;
     }
 
+    private static CamelMetricsService resolveMicrometerService(CamelContext 
camelContext) throws Exception {
+        CamelMetricsService answer = 
camelContext.hasService(CamelMetricsService.class);
+        if (answer == null) {
+            answer = 
camelContext.getRegistry().findSingleByType(CamelMetricsService.class);
+        }
+        if (answer == null) {
+            answer = 
camelContext.getCamelContextExtension().getBootstrapFactoryFinder()
+                    .newInstance("micrometer-prometheus", 
CamelMetricsService.class)
+                    .orElseThrow(() -> new IllegalArgumentException(
+                            "Cannot find CamelMetricsService on classpath. Add 
camel-micrometer-prometheus to classpath."));
+        }
+        return answer;
+    }
+
     private static MainHttpServerFactory 
resolveMainHttpServerFactory(CamelContext camelContext) {
         // lookup in service registry first
         MainHttpServerFactory answer = 
camelContext.getRegistry().findSingleByType(MainHttpServerFactory.class);
diff --git a/parent/pom.xml b/parent/pom.xml
index 64734e4ad97..a5f985fc7ed 100644
--- a/parent/pom.xml
+++ b/parent/pom.xml
@@ -1752,7 +1752,6 @@
                 <groupId>org.apache.camel</groupId>
                 <artifactId>camel-micrometer-prometheus</artifactId>
                 <version>${project.version}</version>
-                <type>jar</type>
             </dependency>
             <dependency>
                 <groupId>org.apache.camel</groupId>

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