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commit 0e0ca2fe9c60fa97ac1d7a6041b6dac99b929f94
Author: Claus Ibsen <[email protected]>
AuthorDate: Thu Apr 21 21:12:45 2022 +0200

    CAMEL-17998: camel-jbang - fat-jar command
---
 bom/camel-bom/pom.xml                              |  5 ++
 .../org/apache/camel/catalog/others.properties     |  1 +
 .../apache/camel/catalog/others/fatjar-main.json   | 15 ++++
 dsl/camel-fatjar-main/pom.xml                      | 83 ++++++++++++++++++++++
 .../services/org/apache/camel/other.properties     |  7 ++
 .../src/generated/resources/fatjar-main.json       | 15 ++++
 .../org/apache/camel/main/fatjar/FatJarMain.java   | 64 +++++++++++++++++
 .../org/apache/camel/main/fatjar/RuntimeUtil.java  | 64 +++++++++++++++++
 .../camel/dsl/jbang/core/commands/FatJar.java      |  3 +-
 dsl/pom.xml                                        |  1 +
 parent/pom.xml                                     |  5 ++
 11 files changed, 262 insertions(+), 1 deletion(-)

diff --git a/bom/camel-bom/pom.xml b/bom/camel-bom/pom.xml
index 39faef5b892..c55def261d7 100644
--- a/bom/camel-bom/pom.xml
+++ b/bom/camel-bom/pom.xml
@@ -757,6 +757,11 @@
         <artifactId>camel-fastjson</artifactId>
         <version>${project.version}</version>
       </dependency>
+      <dependency>
+        <groupId>org.apache.camel</groupId>
+        <artifactId>camel-fatjar-main</artifactId>
+        <version>${project.version}</version>
+      </dependency>
       <dependency>
         <groupId>org.apache.camel</groupId>
         <artifactId>camel-fhir</artifactId>
diff --git 
a/catalog/camel-catalog/src/generated/resources/org/apache/camel/catalog/others.properties
 
b/catalog/camel-catalog/src/generated/resources/org/apache/camel/catalog/others.properties
index 3ffa5dcfd71..826220e2d8d 100644
--- 
a/catalog/camel-catalog/src/generated/resources/org/apache/camel/catalog/others.properties
+++ 
b/catalog/camel-catalog/src/generated/resources/org/apache/camel/catalog/others.properties
@@ -15,6 +15,7 @@ debug
 elytron
 endpointdsl
 etcd3
+fatjar-main
 groovy-dsl
 headersmap
 health
diff --git 
a/catalog/camel-catalog/src/generated/resources/org/apache/camel/catalog/others/fatjar-main.json
 
b/catalog/camel-catalog/src/generated/resources/org/apache/camel/catalog/others/fatjar-main.json
new file mode 100644
index 00000000000..caabf64766f
--- /dev/null
+++ 
b/catalog/camel-catalog/src/generated/resources/org/apache/camel/catalog/others/fatjar-main.json
@@ -0,0 +1,15 @@
+{
+  "other": {
+    "kind": "other",
+    "name": "fatjar-main",
+    "title": "Fatjar Main",
+    "description": "Main to run Camel as Fat-Jar standalone",
+    "deprecated": false,
+    "firstVersion": "3.17.0",
+    "label": "jbang",
+    "supportLevel": "Experimental",
+    "groupId": "org.apache.camel",
+    "artifactId": "camel-fatjar-main",
+    "version": "3.17.0-SNAPSHOT"
+  }
+}
diff --git a/dsl/camel-fatjar-main/pom.xml b/dsl/camel-fatjar-main/pom.xml
new file mode 100644
index 00000000000..ee50ce4e293
--- /dev/null
+++ b/dsl/camel-fatjar-main/pom.xml
@@ -0,0 +1,83 @@
+<?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</groupId>
+        <artifactId>dsl</artifactId>
+        <version>3.17.0-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>camel-fatjar-main</artifactId>
+    <packaging>jar</packaging>
+
+    <name>Camel :: Far-JAR Main</name>
+    <description>Main to run Camel as Fat-Jar standalone</description>
+
+    <properties>
+        <firstVersion>3.17.0</firstVersion>
+        <supportLevel>Experimental</supportLevel>
+        <label>jbang</label>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.camel</groupId>
+            <artifactId>camel-kamelet-main</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-core</artifactId>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-jar-plugin</artifactId>
+                <configuration>
+                    <archive>
+                        <manifest>
+                            
<mainClass>org.apache.camel.main.fatjar.FatJarMain</mainClass>
+                        </manifest>
+                    </archive>
+                </configuration>
+            </plugin>
+
+            <plugin>
+                <groupId>org.apache.camel</groupId>
+                <artifactId>camel-package-maven-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <id>generate</id>
+                        <goals>
+                            <goal>generate-others-list</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>
diff --git 
a/dsl/camel-fatjar-main/src/generated/resources/META-INF/services/org/apache/camel/other.properties
 
b/dsl/camel-fatjar-main/src/generated/resources/META-INF/services/org/apache/camel/other.properties
new file mode 100644
index 00000000000..6602ddfbc7c
--- /dev/null
+++ 
b/dsl/camel-fatjar-main/src/generated/resources/META-INF/services/org/apache/camel/other.properties
@@ -0,0 +1,7 @@
+# Generated by camel build tools - do NOT edit this file!
+name=fatjar-main
+groupId=org.apache.camel
+artifactId=camel-fatjar-main
+version=3.17.0-SNAPSHOT
+projectName=Camel :: Far-JAR Main
+projectDescription=Main to run Camel as Fat-Jar standalone
diff --git a/dsl/camel-fatjar-main/src/generated/resources/fatjar-main.json 
b/dsl/camel-fatjar-main/src/generated/resources/fatjar-main.json
new file mode 100644
index 00000000000..caabf64766f
--- /dev/null
+++ b/dsl/camel-fatjar-main/src/generated/resources/fatjar-main.json
@@ -0,0 +1,15 @@
+{
+  "other": {
+    "kind": "other",
+    "name": "fatjar-main",
+    "title": "Fatjar Main",
+    "description": "Main to run Camel as Fat-Jar standalone",
+    "deprecated": false,
+    "firstVersion": "3.17.0",
+    "label": "jbang",
+    "supportLevel": "Experimental",
+    "groupId": "org.apache.camel",
+    "artifactId": "camel-fatjar-main",
+    "version": "3.17.0-SNAPSHOT"
+  }
+}
diff --git 
a/dsl/camel-fatjar-main/src/main/java/org/apache/camel/main/fatjar/FatJarMain.java
 
b/dsl/camel-fatjar-main/src/main/java/org/apache/camel/main/fatjar/FatJarMain.java
new file mode 100644
index 00000000000..ca4aafc5772
--- /dev/null
+++ 
b/dsl/camel-fatjar-main/src/main/java/org/apache/camel/main/fatjar/FatJarMain.java
@@ -0,0 +1,64 @@
+/*
+ * 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.main.fatjar;
+
+import java.io.FileInputStream;
+
+import org.apache.camel.main.KameletMain;
+import org.apache.camel.util.OrderedProperties;
+
+/**
+ * Main class to run Camel as a fat-jar packaged by camel-jbang
+ */
+public class FatJarMain extends KameletMain {
+
+    public static final String RUN_SETTINGS_FILE = 
"camel-jbang-run.properties";
+
+    public static void main(String... args) throws Exception {
+        FatJarMain main = new FatJarMain();
+        int code = main.run(args);
+        if (code != 0) {
+            System.exit(code);
+        }
+        // normal exit
+    }
+
+    @Override
+    protected void doBuild() throws Exception {
+        setAppName("Apache Camel (FatJar)");
+        setDownload(false); // no need for download as all is included in 
fat-jar
+
+        // load configuration file
+        OrderedProperties prop = new OrderedProperties();
+        prop.load(new FileInputStream(RUN_SETTINGS_FILE));
+
+        // setup embedded log4j logging
+        String loggingLevel = prop.getProperty("loggingLevel", "info");
+        RuntimeUtil.configureLog(loggingLevel);
+
+        // setup configurations
+        for (String key : prop.stringPropertyNames()) {
+            String value = prop.getProperty(key);
+            if (key.startsWith("camel.")) {
+                addInitialProperty(key, value);
+            }
+        }
+
+        super.doBuild();
+    }
+
+}
diff --git 
a/dsl/camel-fatjar-main/src/main/java/org/apache/camel/main/fatjar/RuntimeUtil.java
 
b/dsl/camel-fatjar-main/src/main/java/org/apache/camel/main/fatjar/RuntimeUtil.java
new file mode 100644
index 00000000000..aa4e91263e1
--- /dev/null
+++ 
b/dsl/camel-fatjar-main/src/main/java/org/apache/camel/main/fatjar/RuntimeUtil.java
@@ -0,0 +1,64 @@
+/*
+ * 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.main.fatjar;
+
+import org.apache.logging.log4j.Level;
+import org.apache.logging.log4j.core.config.Configurator;
+import org.slf4j.LoggerFactory;
+
+public final class RuntimeUtil {
+
+    static {
+        Configurator.initialize("CamelFatJar", "log4j2.properties");
+    }
+
+    private RuntimeUtil() {
+    }
+
+    public static void configureLog(String level) {
+        level = level.toLowerCase();
+
+        switch (level) {
+            case "off":
+                Configurator.setRootLevel(Level.OFF);
+                break;
+            case "trace":
+                Configurator.setRootLevel(Level.TRACE);
+                break;
+            case "debug":
+                Configurator.setRootLevel(Level.DEBUG);
+                break;
+            case "info":
+                Configurator.setRootLevel(Level.INFO);
+                break;
+            case "warn":
+                Configurator.setRootLevel(Level.WARN);
+                break;
+            case "error":
+                Configurator.setRootLevel(Level.ERROR);
+                break;
+            case "fatal":
+                Configurator.setRootLevel(Level.FATAL);
+                break;
+            default: {
+                Configurator.setRootLevel(Level.INFO);
+                LoggerFactory.getLogger(RuntimeUtil.class).warn("Invalid 
logging level: {}", level);
+            }
+        }
+    }
+
+}
diff --git 
a/dsl/camel-jbang/camel-jbang-core/src/main/java/org/apache/camel/dsl/jbang/core/commands/FatJar.java
 
b/dsl/camel-jbang/camel-jbang-core/src/main/java/org/apache/camel/dsl/jbang/core/commands/FatJar.java
index ee327ac9140..20d62f96d0c 100644
--- 
a/dsl/camel-jbang/camel-jbang-core/src/main/java/org/apache/camel/dsl/jbang/core/commands/FatJar.java
+++ 
b/dsl/camel-jbang/camel-jbang-core/src/main/java/org/apache/camel/dsl/jbang/core/commands/FatJar.java
@@ -82,7 +82,7 @@ class FatJar implements Callable<Integer> {
         
lines.add("dependency=org.apache.logging.log4j:log4j-slf4j-impl:2.17.2");
         lines.add("dependency=org.fusesource.jansi:jansi:2.4.0");
 
-        // include camel-kamelet-main as its a core dependency needed
+        // include camel-kamelet-main/camel-fatjar-main as they are needed
         Optional<MavenGav> first = lines.stream()
                 .filter(l -> l.startsWith("dependency="))
                 .map(l -> MavenGav.parseGav(null, StringHelper.after(l, 
"dependency=")))
@@ -91,6 +91,7 @@ class FatJar implements Callable<Integer> {
         if (first.isPresent()) {
             String v = first.get().getVersion();
             lines.add(0, "dependency=mvn:org.apache.camel:camel-kamelet-main:" 
+ v);
+            lines.add(0, "dependency=mvn:org.apache.camel:camel-fatjar-main:" 
+ v);
         }
 
         // JARs should be in lib sub-folder
diff --git a/dsl/pom.xml b/dsl/pom.xml
index af868959420..ba8659b13ce 100644
--- a/dsl/pom.xml
+++ b/dsl/pom.xml
@@ -49,6 +49,7 @@
         <module>camel-jsh-dsl</module>
         <module>camel-kotlin-dsl</module>
         <module>camel-kamelet-main</module>
+        <module>camel-fatjar-main</module>
         <module>camel-jbang</module>
     </modules>
 
diff --git a/parent/pom.xml b/parent/pom.xml
index 92c054ee9a5..61795bbf144 100644
--- a/parent/pom.xml
+++ b/parent/pom.xml
@@ -2786,6 +2786,11 @@
                                <artifactId>camel-groovy-dsl-common</artifactId>
                                <version>${project.version}</version>
                        </dependency>
+            <dependency>
+                <groupId>org.apache.camel</groupId>
+                <artifactId>camel-fatjar-main</artifactId>
+                <version>${project.version}</version>
+            </dependency>
                        <dependency>
                                <groupId>org.apache.camel</groupId>
                                <artifactId>camel-kamelet-main</artifactId>

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