Chapter 3. Using Camel JBang Camel Jbang is a JBang-based Camel application for running Camel routes. 3.1. Installing Camel JBang Prerequisites JBang must be installed on your machine. See instructions on how to download and install the JBang. After the JBang is installed, you can verify JBang is working by executing the following command from a command shell: jbang version This outputs the version of installed JBang. Procedure Run the following command to install the Camel JBang application: jbang app install camel@apache/camel This installs the Apache Camel as the camel command within JBang. This means that you can run Camel from the command line by just executing camel command. 3.2. Using Camel JBang The Camel JBang supports multiple commands. The camel help command can display all the available commands. camel --help Note The first time you run this command, it may cause dependencies to be cached, therefore taking a few extra seconds to run. If you are already using JBang and you get errors such as Exception in thread "main" java.lang.NoClassDefFoundError: "org/apache/camel/dsl/jbang/core/commands/CamelJBangMain" , try clearing the JBang cache and re-install again. All the commands support the --help and will display the appropriate help if that flag is provided. 3.2.1. Enable shell completion Camel JBang provides shell completion for bash and zsh out of the box. To enable shell completion for Camel JBang, run: source <(camel completion) To make it permanent, run: echo 'source <(camel completion)' >> ~/.bashrc 3.3. Creating and running Camel routes You can create a new basic routes with the init command. For example to create an XML route, run the following command: camel init cheese.xml This creates the file cheese.xml (in the current directory) with a sample route. To run the file, run: camel run cheese.xml Note You can create and run any of the supported DSLs in Camel such as YAML, XML, Java, Groovy. To create a new .java route, run: camel init foo.java When you use the init command, Camel by default creates the file in the current directory. However, you can use the --directory option to create the file in the specified directory. For example to create in a folder named foobar , run: camel init foo.java --directory=foobar Note When you use the --directory option, Camel automatically cleans this directory if already exists. 3.3.1. Running routes from multiple files You can run routes from more than one file, for example to run two YAML files: camel run one.yaml two.yaml You can run routes from two different files such as yaml and Java: camel run one.yaml hello.java You can use wildcards (i.e. * ) to match multiple files, such as running all the yaml files: camel run *.yaml You can run all files starting with foo*: camel run foo* To run all the files in the directory, use: camel run * Note The run goal can also detect files that are properties , such as application.properties . 3.3.2. Running routes from input parameter For very small Java routes, it is possible to provide the route as CLI argument, as shown below: camel run --code='from("kamelet:beer-source").to("log:beer")' This is very limited as the CLI argument is a bit cumbersome to use than files. When you run the routes from input parameter, remember that: Only Java DSL code is supported. Code is wrapped in single quote, so you can use double quote in Java DSL. Code is limited to what literal values possible to provide from the terminal and JBang. All route(s) must be defined in a single --code parameter. Note Using --code is only usable for very quick and small prototypes. 3.3.3. Dev mode with live reload You can enable the dev mode that comes with live reload of the route(s) when the source file is updated (saved), using the --dev options as shown: camel run foo.yaml --dev Then while the Camel integration is running, you can update the YAML route and update when saving. This option works for all DLS including java , for example: camel run hello.java --dev Note The live reload option is meant for development purposes only, and if you encounter problems with reloading such as JVM class loading issues, then you may need to restart the integration. 3.3.4. Developer Console You can enable the developer console, which presents a variety of information to the developer. To enable the developer console, run: camel run hello.java --console The console is then accessible from a web browser at http://localhost:8080/q/dev (by default). The link is also displayed in the log when the Camel is starting up. The console can give you insights into your running Camel integration, such as reporting the top routes that takes the longest time to process messages. You can then identify the slowest individual EIPs in these routes. The developer console can also output the data in JSON format, that can be used by 3rd-party tooling to capture the information. For example, to output the top routes via curl, run: curl -s -H "Accept: application/json" http://0.0.0.0:8080/q/dev/top/ If you have jq installed, that can format and output the JSON data in colour, run: curl -s -H "Accept: application/json" http://0.0.0.0:8080/q/dev/top/ | jq 3.3.5. Using profiles A profile in Camel JBang is a name (id) that refers to the configuration that is loaded automatically with Camel JBang. The default profile is named as the application which is a (smart default) to let Camel JBang automatic load application.properties (if present). This means that you can create profiles that match to a specific properties file with the same name. For example, running with a profile named local means that Camel JBang will load local.properties instead of application.properties . To use a profile, specify the command line option --profile as shown: camel run hello.java --profile=local You can only specify one profile name at a time, for example, --profile=local,two is not valid. In the properties files you can configure all the configurations from Camel Main . To turn off and enable log masking run the following command: camel.main.streamCaching=false camel.main.logMask=true You can also configure Camel components such as camel-kafka to declare the URL to the brokers: camel.component.kafka.brokers=broker1:9092,broker2:9092,broker3:9092 Note Keys starting with camel.jbang are reserved keys that are used by Camel JBang internally, and allow for pre-configuring arguments for Camel JBang commands. 3.3.6. Downloading JARs over the internet By default, Camel JBang automatically resolves the dependencies needed to run Camel, this is done by JBang and Camel respectively. Camel itself detects at runtime if a component has a need for the JARs that are not currently available on the classpath, and can then automatically download the JARs. Camel downloads these JARs in the following order: from the local disk in ~/.m2/repository from the internet in Maven Central from internet in the custom 3rd-party Maven repositories from all the repositories found in active profiles of ~/.m2/settings.xml or a settings file specified using --maven-settings option. If you do not want the Camel JBang to download over the internet, you can turn this off with the --download option, as shown: camel run foo.java --download=false 3.3.7. Adding custom JARs Camel JBang automatically detects the dependencies for the Camel components, languages, and data formats from its own release. This means that it is not necessary to specify which JARs to use. However, if you need to add 3rd-party custom JARs then you can specify these with the --deps as CLI argument in Maven GAV syntax ( groupId:artifactId:version ), such as: camel run foo.java --deps=com.foo:acme:1.0 camel run foo.java --deps=camel-saxon You can specify multiple dependencies separated by comma: camel run foo.java --deps=camel-saxon,com.foo:acme:1.0 3.3.8. Using 3rd-party Maven repositories Camel JBang downloads from the local repository first, and then from the online Maven Central repository. To download from the 3rd-party Maven repositories, you must specify this as CLI argument, or in the application.properties file. camel run foo.java --repos=https://packages.atlassian.com/maven-external Note You can specify multiple repositories separated by comma. The configuration for the 3rd-party Maven repositories is configured in the application.properties file with the key camel.jbang.repos as shown: camel.jbang.repos=https://packages.atlassian.com/maven-external When you run Camel route, the application.properties is automatically loaded: camel run foo.java You can also explicitly specify the properties file to use: camel run foo.java application.properties Or you can specify this as a profile: camel run foo.java --profile=application Where the profile id is the name of the properties file. 3.3.9. Configuration of Maven usage By default, the existing ~/.m2/settings.xml file is loaded, so it is possible to alter the behavior of the Maven resolution process. Maven settings file provides the information about the Maven mirrors, credential configuration (potentially encrypted) or active profiles and additional repositories. Maven repositories can use authentication and the Maven-way to configure credentials is through <server> elements: <server> <id>external-repository</id> <username>camel</username> <password>{SSVqy/PexxQHvubrWhdguYuG7HnTvHlaNr6g3dJn7nk=}</password> </server> While the password may be specified using plain text, it si recommended to configure the maven master password first and then use it to configure repository password: USD mvn -emp Master password: camel {hqXUuec2RowH8dA8vdqkF6jn4NU9ybOsDjuTmWvYj4U=} The above password must be added to ~/.m2/settings-security.xml file as shown: <settingsSecurity> <master>{hqXUuec2RowH8dA8vdqkF6jn4NU9ybOsDjuTmWvYj4U=}</master> </settingsSecurity> Then you can configure a normal password: USD mvn -ep Password: camel {SSVqy/PexxQHvubrWhdguYuG7HnTvHlaNr6g3dJn7nk=} Then you can use this password in the <server>/<password> configuration. By default, Maven reads the master password from ~/.m2/settings-security.xml file, but you can override it. Location of the settings.xml file itself can be specified as shown: camel run foo.java --maven-settings=/path/to/settings.xml --maven-settings-security=/path/to/settings-security.xml If you want to run Camel application without assuming any location (even ~/.m2/settings.xml ), use this option: camel run foo.java --maven-settings=false 3.3.10. Running routes hosted on GitHub You can run a route that is hosted on the GitHub using the Camels resource loader. For example, to run one of the Camel K examples, use: camel run github:apache:camel-kamelets-examples:jbang/hello-java/Hey.java You can also use the https URL for the GitHub. For example, you can browse the examples from a web-browser and then copy the URL from the browser window and run the example with Camel JBang: camel run https://github.com/apache/camel-kamelets-examples/tree/main/jbang/hello-java You can also use wildcards (i.e. \* ) to match multiple files, such as running all the groovy files: camel run https://github.com/apache/camel-kamelets-examples/tree/main/jbang/languages/*.groovy Or you can run all files starting with rou*: camel run https://github.com/apache/camel-kamelets-examples/tree/main/jbang/languages/rou* 3.3.10.1. Running routes from the GitHub gists Using the gists from the GitHub is a quick way to share the small Camel routes that you can easily run. For example to run a gist, use: camel run https://gist.github.com/davsclaus/477ddff5cdeb1ae03619aa544ce47e92 A gist can contain one or more files, and Camel JBang will gather all relevant files, so a gist can contain multiple routes, properties files, and Java beans. 3.3.11. Downloading routes hosted on the GitHub You can use Camel JBang to download the existing examples from GitHub to local disk, which allows to modify the example and to run locally. For example, you can download the dependency injection example by running the following command: camel init https://github.com/apache/camel-kamelets-examples/tree/main/jbang/dependency-injection Then the files (not sub folders) are downloaded to the current directory. You can then run the example locally with: camel run * You can also download to the files to a new folder using the --directory option, for example to download the files to a folder named myproject , run: camel init https://github.com/apache/camel-kamelets-examples/tree/main/jbang/dependency-injection --directory=myproject Note When using --directory option, Camel will automatically clean this directory if already exists. You can run the example in dev mode, to hot-deploy on the source code changes. camel run * --dev You can download a single file, for example, to download one of the Camel K examples, run: camel init https://github.com/apache/camel-k-examples/blob/main/generic-examples/languages/simple.groovy This is a groovy route, which you can run with (or use * ): camel run simple.groovy 3.3.11.1. Downloading routes form GitHub gists You can download the files from the gists as shown: camel init https://gist.github.com/davsclaus/477ddff5cdeb1ae03619aa544ce47e92 This downloads the files to local disk, which you can run afterwards: camel run * You can download to a new folder using the --directory option, for example, to download to a folder named foobar , run: camel init https://gist.github.com/davsclaus/477ddff5cdeb1ae03619aa544ce47e92 --directory=foobar Note When using --directory option, Camel automatically cleans this directory if already exists. 3.3.12. Using a specific Camel version You can specify which Camel version to run as shown: jbang run -Dcamel.jbang.version=3.20.1 camel@apache/camel [command] Note Older versions of Camel may not work as well with Camel JBang as the newest versions. It is recommended to use the versions starting from Camel 3.18 onwards. You can also try bleeding edge development by using SNAPSHOT such as: jbang run --fresh -Dcamel.jbang.version=3.20.1-SNAPSHOT camel@apache/camel [command] 3.3.13. Running the Camel K integrations or bindings Camel supports running the Camel K integrations and binding files, that are in the CRD format (Kubernetes Custom Resource Definitions).For example, to run a kamelet binding file named joke.yaml : #!/usr/bin/env jbang camel@apache/camel run apiVersion: camel.apache.org/v1alpha1 kind: KameletBinding metadata: name: joke spec: source: ref: kind: Kamelet apiVersion: camel.apache.org/v1 name: chuck-norris-source properties: period: 2000 sink: ref: kind: Kamelet apiVersion: camel.apache.org/v1 name: log-sink properties: show-headers: false camel run joke.yaml 3.3.14. Run from the clipboard You can run the Camel routes directly from the OS clipboard. This allows to copy some code, and then quickly run the route. camel run clipboard.<extension> Where <extension> is the type of the content of the clipboard is, such as java , xml , or yaml . For example, you can copy this to your clipboard and then run the route: <route> <from uri="timer:foo"/> <log message="Hello World"/> </route> camel run clipboard.xml 3.3.15. Controlling the local Camel integrations To list the Camel integrations that are currently running, use the ps option: camel ps PID NAME READY STATUS AGE 61818 sample.camel.MyCamelApplica... 1/1 Running 26m38s 62506 test1 1/1 Running 4m34s This lists the PID, the name and age of the integration. You can use the stop command to stop any of these running Camel integrations. For example to stop the test1 , run: camel stop test1 Stopping running Camel integration (pid: 62506) You can use the PID to stop the integration: camel stop 62506 Stopping running Camel integration (pid: 62506) Note You do not have to type the full name, as the stop command will match the integrations that starts with the input, for example you can type camel stop t to stop all integrations starting with t . To stop all integrations, use the --all option as follows: camel stop --all Stopping running Camel integration (pid: 61818) Stopping running Camel integration (pid: 62506) 3.3.16. Controlling the Spring Boot and Quarkus integrations The Camel JBang CLI by default only controls the Camel integrations that are running using the CLI, for example, camel run foo.java . For the CLI to be able to control and manage the Spring Boot or Quarkus applications, you need to add a dependency to these projects to integrate with the Camel CLI. Spring Boot In the Spring Boot application, add the following dependency: <dependency> <groupId>org.apache.camel.springboot</groupId> <artifactId>camel-cli-connector-starter</artifactId> </dependency> Quarkus In the Quarkus application, add the following dependency: <dependency> <groupId>org.apache.camel.quarkus</groupId> <artifactId>camel-quarkus-cli-connector</artifactId> </dependency> 3.3.17. Getting the status of Camel integrations The get command in the Camel JBang is used for getting the Camel specific status for one or all of the running Camel integrations. To display the status of the running Camel integrations, run: camel get PID NAME CAMEL PLATFORM READY STATUS AGE TOTAL FAILED INFLIGHT SINCE-LAST 61818 MyCamel 3.20.1-SNAPSHOT Spring Boot v2.7.3 1/1 Running 28m34s 854 0 0 0s/0s/- 63051 test1 3.20.1-SNAPSHOT JBang 1/1 Running 18s 14 0 0 0s/0s/- 63068 mygroovy 3.20.1-SNAPSHOT JBang 1/1 Running 5s 2 0 0 0s/0s/- The camel get command displays the default integrations, which is equivalent to typing the camel get integrations or the camel get int commands. This displays the overall information for the every Camel integration, where you can see the total number of messages processed. The column Since Last shows how long time ago the last processed message for three stages (started/completed/failed). The value of 0s/0s/- means that the last started and completed message just happened (0 seconds ago), and that there has not been any failed message yet. In this example, 9s/9s/1h3m means that last started and completed message is 9 seconds ago, and last failed is 1 hour and 3 minutes ago. You can also see the status of every routes, from all the local Camel integrations with camel get route : camel get route PID NAME ID FROM STATUS AGE TOTAL FAILED INFLIGHT MEAN MIN MAX SINCE-LAST 61818 MyCamel hello timer://hello?period=2000 Running 29m2s 870 0 0 0 0 14 0s/0s/- 63051 test1 java timer://java?period=1000 Running 46s 46 0 0 0 0 9 0s/0s/- 63068 mygroovy groovy timer://groovy?period=1000 Running 34s 34 0 0 0 0 5 0s/0s/- Note Use camel get --help to display all the available commands. 3.3.17.1. Top status of the Camel integrations The camel top command is used for getting top utilization statistics (highest to lowest heap used memory) of the running Camel integrations. camel top PID NAME JAVA CAMEL PLATFORM STATUS AGE HEAP NON-HEAP GC THREADS CLASSES 22104 chuck 11.0.13 3.20.1-SNAPSHOT JBang Running 2m10s 131/322/4294 MB 70/73 MB 17ms (6) 7/8 7456/7456 14242 MyCamel 11.0.13 3.20.1-SNAPSHOT Spring Boot v2.7.3 Running 33m40s 115/332/4294 MB 62/66 MB 37ms (6) 16/16 8428/8428 22116 bar 11.0.13 3.20.1-SNAPSHOT JBang Running 2m7s 33/268/4294 MB 54/58 MB 20ms (4) 7/8 6104/6104 The HEAP column shows the heap memory (used/committed/max) and the non-heap (used/committed). The GC column shows the garbage collection information (time and total runs). The CLASSES column shows the number of classes (loaded/total). You can also see the top performing routes (highest to lowest mean processing time) of every routes, from all the local Camel integrations with camel top route : camel top route PID NAME ID FROM STATUS AGE TOTAL FAILED INFLIGHT MEAN MIN MAX SINCE-LAST 22104 chuck chuck-norris-source-1 timer://chuck?period=10000 Started 10s 1 0 0 163 163 163 9s 22116 bar route1 timer://yaml2?period=1000 Started 7s 7 0 0 1 0 11 0s 22104 chuck chuck kamelet://chuck-norris-source Started 10s 1 0 0 0 0 0 9s 22104 chuck log-sink-2 kamelet://source?routeId=log-sink-2 Started 10s 1 0 0 0 0 0 9s 14242 MyCamel hello timer://hello?period=2000 Started 31m41s 948 0 0 0 0 4 0s Note Use camel top --help to display all the available commands. 3.3.17.2. Starting and Stopping the routes The camel cmd is used for executing the miscellaneous commands in the running Camel integrations, for example, the commands to start and stop the routes. To stop all the routes in the chuck integration, run: camel cmd stop-route chuck The status will be then changed to Stopped for the chuck integration: camel get route PID NAME ID FROM STATUS AGE TOTAL FAILED INFLIGHT MEAN MIN MAX SINCE-LAST 81663 chuck chuck kamelet://chuck-norris-source Stopped 600 0 0 0 0 1 4s 81663 chuck chuck-norris-source-1 timer://chuck?period=10000 Stopped 600 0 0 65 52 290 4s 81663 chuck log-sink-2 kamelet://source?routeId=log-sink-2 Stopped 600 0 0 0 0 1 4s 83415 bar route1 timer://yaml2?period=1000 Started 5m30s 329 0 0 0 0 10 0s 83695 MyCamel hello timer://hello?period=2000 Started 3m52s 116 0 0 0 0 9 1s To start the route, run: camel cmd start-route chuck To stop all the routes in every the Camel integration, use the --all flag as follows: camel cmd stop-route --all To start all the routes, use: camel cmd start-route --all Note You can stop one or more route by their ids by separating them using comma, for example, camel cmd start-route --id=route1,hello . Use the camel cmd start-route --help command for more details. 3.3.17.3. Configuring the logging levels You can see the current logging levels of the running Camel integrations by: camel cmd logger PID NAME AGE LOGGER LEVEL 90857 bar 2m48s root INFO 91103 foo 20s root INFO The logging level can be changed at a runtime. For example, to change the level for the foo to DEBUG, run: camel cmd logger --level=DEBUG foo Note You can use --all to change logging levels for all running integrations. 3.3.17.4. Listing services Some Camel integrations may host a service which clients can call, such as REST, or SOAP-WS, or socket-level services using TCP protocols. You can list the available services as shown in the example below: camel get service PID NAME COMPONENT PROTOCOL SERVICE 1912 netty netty tcp tcp:localhost:4444 2023 greetings platform-http rest http://0.0.0.0:7777/camel/greetings/{name} (GET) 2023 greetings platform-http http http://0.0.0.0:7777/q/dev Here, you can see the two Camel integrations. The netty integration hosts a TCP service that is available on port 4444. The other Camel integration hosts a REST service that can be called via GET only. The third integration comes with embedded web console (started with the --console option). Note For a service to be listed the Camel components must be able to advertise the services using Camel Console . 3.3.17.5. Listing state of Circuit Breakers If your Camel integration uses the link:https://camel.apache.org/components/3.22.x/eips/circuitBreaker-eip.html [Circuit Breaker], then you can output the status of the breakers with Camel JBang as follows: camel get circuit-breaker PID NAME COMPONENT ROUTE ID STATE PENDING SUCCESS FAIL REJECT 56033 mycb resilience4j route1 circuitBreaker1 HALF_OPEN 5 2 3 0 Here we can see the circuit breaker is in half open state, that is a state where the breaker is attempting to transition back to closed, if the failures start to drop. Note You can run the command with watch option to show the latest state, for example, watch camel get circuit-breaker . 3.3.18. Using Jolokia and Hawtio The web console allows inspecting running the Camel integrations, such as all the JMX management information, and not but least to visualize the Camel routes with live performance metrics. To allow Hawtio to inspect the Camel integrations, the Jolokia JVM Agent must be installed in the running integration. This is done explicitly as follows: camel ps PID NAME READY STATUS AGE 61818 sample.camel.MyCamelApplica... 1/1 Running 26m38s 62506 test1.java 1/1 Running 4m34s With the PID, you can then attach Jolokia: camel jolokia 62506 Started Jolokia for PID 62506 http://127.0.0.1:8778/jolokia/ Instead of using the PID you can also attach by the name pattern. In this example, the two Camel integrations have unique names (foo and test1), you can attach Jolokia without the PID as follows: camel jolokia te Started Jolokia for PID 62506 http://127.0.0.1:8778/jolokia/ Then you can launch the Hawtio using Camel JBang: camel hawtio This will automatically download and start the Hawtio, and then open in the web browser. Note See camel hawtio --help for more options. When the Hawtio launches in the web browser, click the Discover tab which lists the all local available Jolokia Agents. You can use camel jolokia PID to connect to multiple different Camel integrations and from this list select which to load. Click the green lightning icon to connect to the specific running Camel integration. You can uninstall the Jolokia JVM Agent in a running Camel integration when no longer needed: camel jolokia 62506 --stop Stopped Jolokia for PID 62506 It is also possible to achieve this with only one command, as follows: camel hawtio test1 Where test1 is the name of the running Camel integration. When you stop Hawtio (using ctrl + c ), then Camel will attempt to uninstall the Jolokia JVM Agent, however this is not successful sometimes, because the JVM is being terminated which can prevent camel-jbang from doing JVM process communication to the running Camel integration. 3.3.19. Scripting from the terminal using pipes You can execute a Camel JBang file as a script that is used for terminal scripting with pipes and filters. Note Every time the script is executed a JVM is started with Camel. This is not very fast or low on memory usage, so use the Camel JBang terminal scripting, for example, to use the many Camel components or Kamelets to more easily send or receive data from disparate IT systems. This requires to add the following line in top of the file, for example, as in the upper.yaml file below: ///usr/bin/env jbang --quiet camel@apache/camel pipe "USD0" "USD@" ; exit USD? # Will upper-case the input - from: uri: "stream:in" steps: - setBody: simple: "USD{body.toUpperCase()}" - to: "stream:out" To execute this as a script, you need to set the execute file permission: chmod +x upper.yaml Then you can then execute this as a script: echo "Hello\nWorld" | ./upper.yaml This outputs: HELLO WORLD You can turn on the logging using --logging=true which then logs to .camel-jbang/camel-pipe.log file. The name of the logging file cannot be configured. echo "Hello\nWorld" | ./upper.yaml --logging=true 3.3.19.1. Using stream:in with line vs raw mode When using stream:in to read data from System in then the Stream Component works in two modes: line mode (default) - reads input as single lines (separated by line breaks). Message body is a String . raw mode - reads the entire stream until end of stream . Message body is a byte[] . Note The default mode is due to historically how the stream component was created. Therefore, you may want to set stream:in?readLine=false to use raw mode. 3.3.20. Running local Kamelets You can use Camel JBang to try local Kamelets, without the need to publish them on GitHub or package them in a jar. camel run --local-kamelet-dir=/path/to/local/kamelets earthquake.yaml Note When the kamelets are from local file system, then they can be live reloaded, if they are updated, when you run Camel JBang in --dev mode. You can also point to a folder in a GitHub repository. For example: camel run --local-kamelet-dir=https://github.com/apache/camel-kamelets-examples/tree/main/custom-kamelets user.java Note If a kamelet is loaded from GitHub, then they cannot be live reloaded. 3.3.21. Using the platform-http component When a route is started from platform-http then the Camel JBang automatically includes a VertX HTTP server running on port 8080. following example shows the route in a file named server.yaml : - from: uri: "platform-http:/hello" steps: - set-body: constant: "Hello World" You can run this example with: camel run server.yaml And then call the HTTP service with: USD curl http://localhost:8080/hello Hello World% 3.3.22. Using Java beans and processors There is basic support for including regular Java source files together with Camel routes, and let the Camel JBang runtime compile the Java source. This means you can include smaller utility classes, POJOs, Camel Processors that the application needs. Note The Java source files cannot use package names. 3.3.23. Dependency Injection in Java classes When running the Camel integrations with camel-jbang , the runtime is camel-main based. This means there is no Spring Boot, or Quarkus available. However, there is a support for using annotation based dependency injection in Java classes. 3.3.23.1. Using Spring Boot dependency injection You can use the following Spring Boot annotations: @org.springframework.stereotype.Component or @org.springframework.stereotype.Service on class level to create an instance of the class and register in the Registry . @org.springframework.beans.factory.annotation.Autowired to dependency inject a bean on a class field. @org.springframework.beans.factory.annotation.Qualifier can be used to specify the bean id. @org.springframework.beans.factory.annotation.Value to inject a property placeholder . Such as a property defined in application.properties . @org.springframework.context.annotation.Bean on a method to create a bean by invoking the method. 3.3.24. Debugging There are two kinds of debugging available: Java debugging - Java code debugging (Standard Java) Camel route debugging - Debugging Camel routes (requires Camel tooling plugins) 3.3.24.1. Java debugging You can debug your integration scripts by using the --debug flag provided by JBang. However, to enable the Java debugging when starting the JVM, use the jbang command, instead of camel as shown: jbang --debug camel@apache/camel run hello.yaml Listening for transport dt_socket at address: 4004 As you can see the default listening port is 4004 but can be configured as described in JBang debugging . This is a standard Java debug socket. You can then use the IDE of your choice. You can add a Processor to put breakpoints hit during route execution (as opposed to route definition creation). 3.3.24.2. Camel route debugging The Camel route debugger is available by default (the camel-debug component is automatically added to the classpath). By default, it can be reached through JMX at the URL service:jmx:rmi:///jndi/rmi://localhost:1099/jmxrmi/camel . You can then use the Integrated Development Environment (IDE) of your choice. 3.3.25. Health Checks The status of health checks is accessed using the Camel JBang from the CLI as follows: camel get health PID NAME AGE ID RL STATE RATE SINCE MESSAGE 61005 mybind 8s camel/context R UP 2/2/- 1s/3s/- Here you can see the Camel is UP . The application has been running for 8 seconds, and there are two health checks invoked. The output shows the default level of checks as: CamelContext health check Component specific health checks (such as from camel-kafka or camel-aws ) Custom health checks Any check which are not UP The RATE column shows three numbers separated by / . So 2/2/- means 2 checks in total, 2 successful and no failures. The two last columns will reset when a health check changes state as this number is the number of consecutive checks that was successful or failure. So if the health check starts to fail then the numbers could be: camel get health PID NAME AGE ID RL STATE RATE SINCE MESSAGE 61005 mybind 3m2s camel/context R UP 77/-/3 1s/-/17s some kind of error Here you can see the numbers is changed to 77/-/3 . This means the total number of checks is 77. There is no success, but the check has been failing 3 times in a row. The SINCE column corresponds to the RATE . So in this case you can see the last check was 1 second ago, and that the check has been failing for 17 second in a row. You can use --level=full to output every health checks that will include consumer and route level checks as well. A health check may often be failed due to an exception was thrown which can be shown using --trace flag: camel get health --trace PID NAME AGE ID RL STATE RATE SINCE MESSAGE 61038 mykafka 6m19s camel/context R UP 187/187/- 1s/6m16s/- 61038 mykafka 6m19s camel/kafka-consumer-kafka-not-secure... R DOWN 187/-/187 1s/-/6m16s KafkaConsumer is not ready - Error: Invalid url in bootstrap.servers: value ------------------------------------------------------------------------------------------------------------------------ STACK-TRACE ------------------------------------------------------------------------------------------------------------------------ PID: 61038 NAME: mykafka AGE: 6m19s CHECK-ID: camel/kafka-consumer-kafka-not-secured-source-1 STATE: DOWN RATE: 187 SINCE: 6m16s METADATA: bootstrap.servers = value group.id = 7d8117be-41b4-4c81-b4df-cf26b928d38a route.id = kafka-not-secured-source-1 topic = value MESSAGE: KafkaConsumer is not ready - Error: Invalid url in bootstrap.servers: value org.apache.kafka.common.KafkaException: Failed to construct kafka consumer at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:823) at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:664) at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:645) at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:625) at org.apache.camel.component.kafka.DefaultKafkaClientFactory.getConsumer(DefaultKafkaClientFactory.java:34) at org.apache.camel.component.kafka.KafkaFetchRecords.createConsumer(KafkaFetchRecords.java:241) at org.apache.camel.component.kafka.KafkaFetchRecords.createConsumerTask(KafkaFetchRecords.java:201) at org.apache.camel.support.task.ForegroundTask.run(ForegroundTask.java:123) at org.apache.camel.component.kafka.KafkaFetchRecords.run(KafkaFetchRecords.java:125) at java.base/java.util.concurrent.ExecutorsUSDRunnableAdapter.call(Executors.java:515) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutorUSDWorker.run(ThreadPoolExecutor.java:628) at java.base/java.lang.Thread.run(Thread.java:829) Caused by: org.apache.kafka.common.config.ConfigException: Invalid url in bootstrap.servers: value at org.apache.kafka.clients.ClientUtils.parseAndValidateAddresses(ClientUtils.java:59) at org.apache.kafka.clients.ClientUtils.parseAndValidateAddresses(ClientUtils.java:48) at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:730) ... 13 more Here you can see that the health check fails because of the org.apache.kafka.common.config.ConfigException which is due to invalid configuration: Invalid url in bootstrap.servers: value . Note Use camel get health --help to see all the various options. 3.4. Listing what Camel components is available Camel comes with a lot of artifacts out of the box which are: components data formats expression languages miscellaneous components kamelets You can use the Camel CLI to list what Camel provides using the camel catalog command. For example, to list all the components: camel catalog components To see which Kamelets are available: camel catalog kamelets Note Use camel catalog --help to see all possible commands. 3.4.1. Displaying component documentation The doc goal can show quick documentation for every component, dataformat, and kamelets. For example, to see the kafka component run: camel doc kafka Note The documentation is not the full documentation as shown on the website, as the Camel CLI does not have direct access to this information and can only show a basic description of the component, but include tables for every configuration option. To see the documentation for jackson dataformat: camel doc jackson In some rare cases then there may be a component and dataformat with the same name, and the doc goal prioritizes components. In such a situation you can prefix the name with dataformat, for example: camel doc dataformat:thrift You can also see the kamelet documentation such as shown: camel doc aws-kinesis-sink 3.4.1.1. Browsing online documentation from the Camel website You can use the doc command to quickly open the url in the web browser for the online documentation. For example to browse the kafka component, you use --open-url : camel doc kafka --open-url This also works for data formats, languages, kamelets. camel doc aws-kinesis-sink --open-url Note To just get the link to the online documentation, then use camel doc kafka --url . 3.4.1.2. Filtering options listed in the tables Some components may have many options, and in such cases you can use the --filter option to only list the options that match the filter either in the name, description, or the group (producer, security, advanced). For example, to list only security related options: camel doc kafka --filter=security To list only something about timeout : camel doc kafka --filter=timeout 3.5. Open API Camel JBang allows to quickly expose an Open API service using contract first approach, where you have an existing OpenAPI specification file. Camel JBang bridges each API endpoints from the OpenAPI specification to a Camel route with the naming convention direct:<operationId> . This make it quicker to implement a Camel route for a given operation. See the OpenAPI example for more details. 3.6. Gathering list of dependencies The dependencies are automatically resolved when you work with Camel JBang. This means that you do not have to use a build system like Maven or Gradle to add every Camel components as a dependency. However, you may want to know what dependencies are required to run the Camel integration. You can use the dependencies command to see the dependencies required. The command output does not output a detailed tree, such as mvn dependencies:tree , as the output is intended to list which Camel components, and other JARs needed (when using Kamelets). The dependency output by default is vanilla Apache Camel with the camel-main as runtime, as shown: camel dependencies org.apache.camel:camel-dsl-modeline:3.20.0 org.apache.camel:camel-health:3.20.0 org.apache.camel:camel-kamelet:3.20.0 org.apache.camel:camel-log:3.20.0 org.apache.camel:camel-rest:3.20.0 org.apache.camel:camel-stream:3.20.0 org.apache.camel:camel-timer:3.20.0 org.apache.camel:camel-yaml-dsl:3.20.0 org.apache.camel.kamelets:camel-kamelets-utils:0.9.3 org.apache.camel.kamelets:camel-kamelets:0.9.3 The output is by default a line per maven dependency in GAV format (groupId:artifactId:version). You can specify the Maven format for the the output as shown: camel dependencies --output=maven <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-main</artifactId> <version>3.20.0</version> </dependency> <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-dsl-modeline</artifactId> <version>3.20.0</version> </dependency> <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-health</artifactId> <version>3.20.0</version> </dependency> <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-kamelet</artifactId> <version>3.20.0</version> </dependency> <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-log</artifactId> <version>3.20.0</version> </dependency> <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-rest</artifactId> <version>3.20.0</version> </dependency> <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-stream</artifactId> <version>3.20.0</version> </dependency> <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-timer</artifactId> <version>3.20.0</version> </dependency> <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-yaml-dsl</artifactId> <version>3.20.0</version> </dependency> <dependency> <groupId>org.apache.camel.kamelets</groupId> <artifactId>camel-kamelets-utils</artifactId> <version>0.9.3</version> </dependency> <dependency> <groupId>org.apache.camel.kamelets</groupId> <artifactId>camel-kamelets</artifactId> <version>0.9.3</version> </dependency> You can also choose the target runtime as either`quarkus` or spring-boot as shown: camel dependencies --runtime=spring-boot org.springframework.boot:spring-boot-starter-actuator:2.7.5 org.springframework.boot:spring-boot-starter-web:2.7.5 org.apache.camel.springboot:camel-spring-boot-engine-starter:3.20.0 org.apache.camel.springboot:camel-dsl-modeline-starter:3.20.0 org.apache.camel.springboot:camel-kamelet-starter:3.20.0 org.apache.camel.springboot:camel-log-starter:3.20.0 org.apache.camel.springboot:camel-rest-starter:3.20.0 org.apache.camel.springboot:camel-stream-starter:3.20.0 org.apache.camel.springboot:camel-timer-starter:3.20.0 org.apache.camel.springboot:camel-yaml-dsl-starter:3.20 org.apache.camel.kamelets:camel-kamelets-utils:0.9.3 org.apache.camel.kamelets:camel-kamelets:0.9.3 3.7. Creating Projects You can export your Camel JBang integration to a traditional Java based project such as Spring Boot or Quarkus. You may want to do this after you have built a prototype using Camel JBang, and are in the need of a traditional Java based project with more need for Java coding, or to use the powerful runtimes of Spring Boot, Quarkus or vanilla Camel Main. 3.7.1. Exporting to Camel Spring Boot The command export --runtime=spring-boot exports your current Camel JBang file(s) to a Maven based Spring Boot project with files organized in src/main/ folder structure. For example, to export to the Spring Boot using the Maven groupId com.foo and the artifactId acme and with version 1.0-SNAPSHOT , run: camel export --runtime=spring-boot --gav=com.foo:acme:1.0-SNAPSHOT Note This will export to the current directory, this means that files are moved into the needed folder structure. To export to another directory, run: camel export --runtime=spring-boot --gav=com.foo:acme:1.0-SNAPSHOT --directory=../myproject When exporting to the Spring Boot, the Camel version defined in the pom.xml or build.gradle is the same version as Camel JBang uses. However, you can specify the different Camel version as shown: camel export --runtime=spring-boot --gav=com.foo:acme:1.0-SNAPSHOT --directory=../myproject --camel-spring-boot-version=3.20.1.redhat-00109 Note See the possible options by running the camel export --help command for more details. 3.7.2. Exporting with Camel CLI included When exporting to Spring Boot, Quarkus or Camel Main, the Camel JBang CLI is not included out of the box. To continue to use the Camel CLI (that is camel ), you need to add camel:cli-connector in the --deps option, as shown: camel export --runtime=quarkus --gav=com.foo:acme:1.0-SNAPSHOT --deps=camel:cli-connector --directory=../myproject 3.7.3. Configuring exporting The export command by default loads the configuration from application.properties file which is used for exporting specific parameters such as selecting the runtime and java version. The following options related to exporting , can be configured in the application.properties file: Option Description camel.jbang.runtime Runtime (spring-boot, quarkus, or camel-main) camel.jbang.gav The Maven group:artifact:version camel.jbang.dependencies Additional dependencies (Use commas to separate multiple dependencies). See more details at Adding custom JARs . camel.jbang.classpathFiles Additional files to add to classpath (Use commas to separate multiple files). See more details at Adding custom JARs . camel.jbang.javaVersion Java version (11 or 17) camel.jbang.kameletsVersion Apache Camel Kamelets version camel.jbang.localKameletDir Local directory for loading Kamelets camel.jbang.camelSpringBootVersion Camel version to use with Spring Boot camel.jbang.springBootVersion Spring Boot version camel.jbang.quarkusGroupId Quarkus Platform Maven groupId camel.jbang.quarkusArtifactId Quarkus Platform Maven artifactId camel.jbang.quarkusVersion Quarkus Platform version camel.jbang.mavenWrapper Include Maven Wrapper files in exported project camel.jbang.gradleWrapper Include Gradle Wrapper files in exported project camel.jbang.buildTool Build tool to use (maven or gradle) camel.jbang.repos Additional maven repositories for download on-demand (Use commas to separate multiple repositories) camel.jbang.mavenSettings Optional location of maven setting.xml file to configure servers, repositories, mirrors and proxies. If set to false, not even the default ~/.m2/settings.xml will be used. camel.jbang.mavenSettingsSecurity Optional location of maven settings-security.xml file to decrypt settings.xml camel.jbang.exportDir Directory where the project will be exported. camel.jbang.platform-http.port HTTP server port to use when running standalone Camel, such as when --console is enabled (port 8080 by default). camel.jbang.console Developer console at /q/dev on local HTTP server (port 8080 by default) when running standalone Camel. camel.jbang.health Health check at /q/health on local HTTP server (port 8080 by default) when running standalone Camel. Note These are the options from the export command. You can see more details and default values using camel export --help . 3.8. Troubleshooting When you use JBang, it stores the state in ~/.jbang directory. This is also the location where JBang stores downloaded JARs. Camel JBang also downloads the needed dependencies while running. However, these dependencies are downloaded to your local Maven repository ~/.m2 . So when you troubleshoot the problems such as an outdated JAR while running the Camel JBang, try to delete these directories, or parts of it.

Commands:
jbang version
jbang app install camel@apache/camel
camel --help
source <(camel completion)
echo 'source <(camel completion)' >> ~/.bashrc
camel init cheese.xml
camel run cheese.xml
camel init foo.java
camel init foo.java --directory=foobar
camel run one.yaml two.yaml
camel run one.yaml hello.java
camel run *.yaml
camel run foo*
camel run *
camel run --code='from("kamelet:beer-source").to("log:beer")'
camel run foo.yaml --dev
camel run hello.java --dev
camel run hello.java --console
curl -s -H "Accept: application/json" http://0.0.0.0:8080/q/dev/top/
curl -s -H "Accept: application/json" http://0.0.0.0:8080/q/dev/top/ | jq
camel run hello.java --profile=local
camel.main.streamCaching=false camel.main.logMask=true
camel.component.kafka.brokers=broker1:9092,broker2:9092,broker3:9092
camel run foo.java --download=false
camel run foo.java --deps=com.foo:acme:1.0
To add a Camel dependency explicitly you can use a shorthand syntax (starting with `camel:` or `camel-`):
camel run foo.java --deps=camel-saxon
camel run foo.java --deps=camel-saxon,com.foo:acme:1.0
camel run foo.java --repos=https://packages.atlassian.com/maven-external
camel.jbang.repos=https://packages.atlassian.com/maven-external
camel run foo.java
camel run foo.java application.properties
camel run foo.java --profile=application
<server> <id>external-repository</id> <username>camel</username> <password>{SSVqy/PexxQHvubrWhdguYuG7HnTvHlaNr6g3dJn7nk=}</password> </server>
mvn -emp Master password: camel {hqXUuec2RowH8dA8vdqkF6jn4NU9ybOsDjuTmWvYj4U=}
<settingsSecurity> <master>{hqXUuec2RowH8dA8vdqkF6jn4NU9ybOsDjuTmWvYj4U=}</master> </settingsSecurity>
mvn -ep Password: camel {SSVqy/PexxQHvubrWhdguYuG7HnTvHlaNr6g3dJn7nk=}
camel run foo.java --maven-settings=/path/to/settings.xml --maven-settings-security=/path/to/settings-security.xml
camel run foo.java --maven-settings=false
camel run github:apache:camel-kamelets-examples:jbang/hello-java/Hey.java
camel run https://github.com/apache/camel-kamelets-examples/tree/main/jbang/hello-java
camel run https://github.com/apache/camel-kamelets-examples/tree/main/jbang/languages/*.groovy
camel run https://github.com/apache/camel-kamelets-examples/tree/main/jbang/languages/rou*
camel run https://gist.github.com/davsclaus/477ddff5cdeb1ae03619aa544ce47e92
camel init https://github.com/apache/camel-kamelets-examples/tree/main/jbang/dependency-injection
camel run *
camel init https://github.com/apache/camel-kamelets-examples/tree/main/jbang/dependency-injection --directory=myproject
camel run * --dev
camel init https://github.com/apache/camel-k-examples/blob/main/generic-examples/languages/simple.groovy
camel run simple.groovy
camel init https://gist.github.com/davsclaus/477ddff5cdeb1ae03619aa544ce47e92
camel run *
camel init https://gist.github.com/davsclaus/477ddff5cdeb1ae03619aa544ce47e92 --directory=foobar
jbang run -Dcamel.jbang.version=3.20.1 camel@apache/camel [command]
jbang run --fresh -Dcamel.jbang.version=3.20.1-SNAPSHOT camel@apache/camel [command]
#!/usr/bin/env jbang camel@apache/camel run apiVersion: camel.apache.org/v1alpha1 kind: KameletBinding metadata: name: joke spec: source: ref: kind: Kamelet apiVersion: camel.apache.org/v1 name: chuck-norris-source properties: period: 2000 sink: ref: kind: Kamelet apiVersion: camel.apache.org/v1 name: log-sink properties: show-headers: false
camel run joke.yaml
camel run clipboard.<extension>
<route> <from uri="timer:foo"/> <log message="Hello World"/> </route>
camel run clipboard.xml
camel ps PID NAME READY STATUS AGE 61818 sample.camel.MyCamelApplica... 1/1 Running 26m38s 62506 test1 1/1 Running 4m34s
camel stop test1 Stopping running Camel integration (pid: 62506)
camel stop 62506 Stopping running Camel integration (pid: 62506)
camel stop --all Stopping running Camel integration (pid: 61818) Stopping running Camel integration (pid: 62506)
<dependency> <groupId>org.apache.camel.springboot</groupId> <artifactId>camel-cli-connector-starter</artifactId> </dependency>
<dependency> <groupId>org.apache.camel.quarkus</groupId> <artifactId>camel-quarkus-cli-connector</artifactId> </dependency>
camel get PID NAME CAMEL PLATFORM READY STATUS AGE TOTAL FAILED INFLIGHT SINCE-LAST 61818 MyCamel 3.20.1-SNAPSHOT Spring Boot v2.7.3 1/1 Running 28m34s 854 0 0 0s/0s/- 63051 test1 3.20.1-SNAPSHOT JBang 1/1 Running 18s 14 0 0 0s/0s/- 63068 mygroovy 3.20.1-SNAPSHOT JBang 1/1 Running 5s 2 0 0 0s/0s/-
camel get route PID NAME ID FROM STATUS AGE TOTAL FAILED INFLIGHT MEAN MIN MAX SINCE-LAST 61818 MyCamel hello timer://hello?period=2000 Running 29m2s 870 0 0 0 0 14 0s/0s/- 63051 test1 java timer://java?period=1000 Running 46s 46 0 0 0 0 9 0s/0s/- 63068 mygroovy groovy timer://groovy?period=1000 Running 34s 34 0 0 0 0 5 0s/0s/-
camel top PID NAME JAVA CAMEL PLATFORM STATUS AGE HEAP NON-HEAP GC THREADS CLASSES 22104 chuck 11.0.13 3.20.1-SNAPSHOT JBang Running 2m10s 131/322/4294 MB 70/73 MB 17ms (6) 7/8 7456/7456 14242 MyCamel 11.0.13 3.20.1-SNAPSHOT Spring Boot v2.7.3 Running 33m40s 115/332/4294 MB 62/66 MB 37ms (6) 16/16 8428/8428 22116 bar 11.0.13 3.20.1-SNAPSHOT JBang Running 2m7s 33/268/4294 MB 54/58 MB 20ms (4) 7/8 6104/6104
camel top route PID NAME ID FROM STATUS AGE TOTAL FAILED INFLIGHT MEAN MIN MAX SINCE-LAST 22104 chuck chuck-norris-source-1 timer://chuck?period=10000 Started 10s 1 0 0 163 163 163 9s 22116 bar route1 timer://yaml2?period=1000 Started 7s 7 0 0 1 0 11 0s 22104 chuck chuck kamelet://chuck-norris-source Started 10s 1 0 0 0 0 0 9s 22104 chuck log-sink-2 kamelet://source?routeId=log-sink-2 Started 10s 1 0 0 0 0 0 9s 14242 MyCamel hello timer://hello?period=2000 Started 31m41s 948 0 0 0 0 4 0s
camel cmd stop-route chuck
camel get route PID NAME ID FROM STATUS AGE TOTAL FAILED INFLIGHT MEAN MIN MAX SINCE-LAST 81663 chuck chuck kamelet://chuck-norris-source Stopped 600 0 0 0 0 1 4s 81663 chuck chuck-norris-source-1 timer://chuck?period=10000 Stopped 600 0 0 65 52 290 4s 81663 chuck log-sink-2 kamelet://source?routeId=log-sink-2 Stopped 600 0 0 0 0 1 4s 83415 bar route1 timer://yaml2?period=1000 Started 5m30s 329 0 0 0 0 10 0s 83695 MyCamel hello timer://hello?period=2000 Started 3m52s 116 0 0 0 0 9 1s
camel cmd start-route chuck
camel cmd stop-route --all
camel cmd start-route --all
camel cmd logger PID NAME AGE LOGGER LEVEL 90857 bar 2m48s root INFO 91103 foo 20s root INFO
camel cmd logger --level=DEBUG foo
camel get service PID NAME COMPONENT PROTOCOL SERVICE 1912 netty netty tcp tcp:localhost:4444 2023 greetings platform-http rest http://0.0.0.0:7777/camel/greetings/{name} (GET) 2023 greetings platform-http http http://0.0.0.0:7777/q/dev
camel get circuit-breaker PID NAME COMPONENT ROUTE ID STATE PENDING SUCCESS FAIL REJECT 56033 mycb resilience4j route1 circuitBreaker1 HALF_OPEN 5 2 3 0
camel ps PID NAME READY STATUS AGE 61818 sample.camel.MyCamelApplica... 1/1 Running 26m38s 62506 test1.java 1/1 Running 4m34s
camel jolokia 62506 Started Jolokia for PID 62506 http://127.0.0.1:8778/jolokia/
camel jolokia te Started Jolokia for PID 62506 http://127.0.0.1:8778/jolokia/
camel hawtio
camel jolokia 62506 --stop Stopped Jolokia for PID 62506
camel hawtio test1
///usr/bin/env jbang --quiet camel@apache/camel pipe "USD0" "USD@" ; exit USD? Will upper-case the input - from: uri: "stream:in" steps: - setBody: simple: "USD{body.toUpperCase()}" - to: "stream:out"
chmod +x upper.yaml
echo "Hello\nWorld" | ./upper.yaml
HELLO WORLD
echo "Hello\nWorld" | ./upper.yaml --logging=true
camel run --local-kamelet-dir=/path/to/local/kamelets earthquake.yaml
camel run --local-kamelet-dir=https://github.com/apache/camel-kamelets-examples/tree/main/custom-kamelets user.java
- from: uri: "platform-http:/hello" steps: - set-body: constant: "Hello World"
camel run server.yaml
curl http://localhost:8080/hello Hello World%
jbang --debug camel@apache/camel run hello.yaml Listening for transport dt_socket at address: 4004
camel get health PID NAME AGE ID RL STATE RATE SINCE MESSAGE 61005 mybind 8s camel/context R UP 2/2/- 1s/3s/-
camel get health PID NAME AGE ID RL STATE RATE SINCE MESSAGE 61005 mybind 3m2s camel/context R UP 77/-/3 1s/-/17s some kind of error
camel get health --trace PID NAME AGE ID RL STATE RATE SINCE MESSAGE 61038 mykafka 6m19s camel/context R UP 187/187/- 1s/6m16s/- 61038 mykafka 6m19s camel/kafka-consumer-kafka-not-secure... R DOWN 187/-/187 1s/-/6m16s KafkaConsumer is not ready - Error: Invalid url in bootstrap.servers: value ------------------------------------------------------------------------------------------------------------------------ STACK-TRACE ------------------------------------------------------------------------------------------------------------------------ PID: 61038 NAME: mykafka AGE: 6m19s CHECK-ID: camel/kafka-consumer-kafka-not-secured-source-1 STATE: DOWN RATE: 187 SINCE: 6m16s METADATA: bootstrap.servers = value group.id = 7d8117be-41b4-4c81-b4df-cf26b928d38a route.id = kafka-not-secured-source-1 topic = value MESSAGE: KafkaConsumer is not ready - Error: Invalid url in bootstrap.servers: value org.apache.kafka.common.KafkaException: Failed to construct kafka consumer at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:823) at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:664) at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:645) at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:625) at org.apache.camel.component.kafka.DefaultKafkaClientFactory.getConsumer(DefaultKafkaClientFactory.java:34) at org.apache.camel.component.kafka.KafkaFetchRecords.createConsumer(KafkaFetchRecords.java:241) at org.apache.camel.component.kafka.KafkaFetchRecords.createConsumerTask(KafkaFetchRecords.java:201) at org.apache.camel.support.task.ForegroundTask.run(ForegroundTask.java:123) at org.apache.camel.component.kafka.KafkaFetchRecords.run(KafkaFetchRecords.java:125) at java.base/java.util.concurrent.ExecutorsUSDRunnableAdapter.call(Executors.java:515) at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutorUSDWorker.run(ThreadPoolExecutor.java:628) at java.base/java.lang.Thread.run(Thread.java:829) Caused by: org.apache.kafka.common.config.ConfigException: Invalid url in bootstrap.servers: value at org.apache.kafka.clients.ClientUtils.parseAndValidateAddresses(ClientUtils.java:59) at org.apache.kafka.clients.ClientUtils.parseAndValidateAddresses(ClientUtils.java:48) at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:730) ... 13 more
camel catalog components
camel catalog kamelets
camel doc kafka
camel doc jackson
camel doc dataformat:thrift
camel doc aws-kinesis-sink
camel doc kafka --open-url
camel doc aws-kinesis-sink --open-url
camel doc kafka --filter=security
camel doc kafka --filter=timeout
camel dependencies org.apache.camel:camel-dsl-modeline:3.20.0 org.apache.camel:camel-health:3.20.0 org.apache.camel:camel-kamelet:3.20.0 org.apache.camel:camel-log:3.20.0 org.apache.camel:camel-rest:3.20.0 org.apache.camel:camel-stream:3.20.0 org.apache.camel:camel-timer:3.20.0 org.apache.camel:camel-yaml-dsl:3.20.0 org.apache.camel.kamelets:camel-kamelets-utils:0.9.3 org.apache.camel.kamelets:camel-kamelets:0.9.3
camel dependencies --output=maven <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-main</artifactId> <version>3.20.0</version> </dependency> <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-dsl-modeline</artifactId> <version>3.20.0</version> </dependency> <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-health</artifactId> <version>3.20.0</version> </dependency> <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-kamelet</artifactId> <version>3.20.0</version> </dependency> <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-log</artifactId> <version>3.20.0</version> </dependency> <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-rest</artifactId> <version>3.20.0</version> </dependency> <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-stream</artifactId> <version>3.20.0</version> </dependency> <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-timer</artifactId> <version>3.20.0</version> </dependency> <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-yaml-dsl</artifactId> <version>3.20.0</version> </dependency> <dependency> <groupId>org.apache.camel.kamelets</groupId> <artifactId>camel-kamelets-utils</artifactId> <version>0.9.3</version> </dependency> <dependency> <groupId>org.apache.camel.kamelets</groupId> <artifactId>camel-kamelets</artifactId> <version>0.9.3</version> </dependency>
camel dependencies --runtime=spring-boot org.springframework.boot:spring-boot-starter-actuator:2.7.5 org.springframework.boot:spring-boot-starter-web:2.7.5 org.apache.camel.springboot:camel-spring-boot-engine-starter:3.20.0 org.apache.camel.springboot:camel-dsl-modeline-starter:3.20.0 org.apache.camel.springboot:camel-kamelet-starter:3.20.0 org.apache.camel.springboot:camel-log-starter:3.20.0 org.apache.camel.springboot:camel-rest-starter:3.20.0 org.apache.camel.springboot:camel-stream-starter:3.20.0 org.apache.camel.springboot:camel-timer-starter:3.20.0 org.apache.camel.springboot:camel-yaml-dsl-starter:3.20 org.apache.camel.kamelets:camel-kamelets-utils:0.9.3 org.apache.camel.kamelets:camel-kamelets:0.9.3
camel export --runtime=spring-boot --gav=com.foo:acme:1.0-SNAPSHOT
camel export --runtime=spring-boot --gav=com.foo:acme:1.0-SNAPSHOT --directory=../myproject
camel export --runtime=spring-boot --gav=com.foo:acme:1.0-SNAPSHOT --directory=../myproject --camel-spring-boot-version=3.20.1.redhat-00109
camel export --runtime=quarkus --gav=com.foo:acme:1.0-SNAPSHOT --deps=camel:cli-connector --directory=../myproject