Red Hat Summit Red Hat SummitSupportKonsoleEntwicklerDemo startenKontakt

Dieser Inhalt ist in der von Ihnen ausgewählten Sprache nicht verfügbar.

Chapter 83. YAML DSL

A YAML stack for parsing YAML route definitions

83.1. What’s inside
Link kopieren

Please refer to the above link for usage and configuration details.

83.2. Maven coordinates
Link kopieren

Create a new project with this extension on code.quarkus.redhat.com

Or add the coordinates to your existing project: 

<dependency>
    <groupId>org.apache.camel.quarkus</groupId>
    <artifactId>camel-quarkus-yaml-dsl</artifactId>
</dependency>
Copy to Clipboard Toggle word wrap

83.3. Usage
Link kopieren

83.3.1. Native mode
Link kopieren

The following constructs when defined within Camel YAML DSL markup, require you to register classes for reflection. Refer to the Native mode guide for details.

83.3.1.1. Bean definitions
Link kopieren

The YAML DSL provides the capability to define beans as follows. 

- beans:
    - name: "greetingBean"
      type: "org.acme.GreetingBean"
      properties:
        greeting: "Hello World!"
- route:
    id: "my-yaml-route"
    from:
      uri: "timer:from-yaml?period=1000"
      steps:
        - to: "bean:greetingBean"
Copy to Clipboard Toggle word wrap

In this example, the GreetingBean class needs to be registered for reflection. This applies to any types that you refer to under the beans key in your YAML routes. 

@RegisterForReflection
public class GreetingBean {
}
Copy to Clipboard Toggle word wrap

83.3.1.2. Exception handling
Link kopieren

Camel provides various methods of handling exceptions. Some of these require that any exception classes referenced in their DSL definitions are registered for reflection.

on-exception 

- on-exception:
    handled:
      constant: "true"
    exception:
      - "org.acme.MyHandledException"
    steps:
      - transform:
          constant: "Sorry something went wrong"
Copy to Clipboard Toggle word wrap 
@RegisterForReflection
public class MyHandledException {
}
Copy to Clipboard Toggle word wrap

throw-exception 

- route:
    id: "my-yaml-route"
    from:
      uri: "direct:start"
      steps:
        - choice:
            when:
              - simple: "${body} == 'bad value'"
                steps:
                  - throw-exception:
                      exception-type: "org.acme.ForcedException"
                      message: "Forced exception"
            otherwise:
              steps:
                - to: "log:end"
Copy to Clipboard Toggle word wrap 
@RegisterForReflection
public class ForcedException {
}
Copy to Clipboard Toggle word wrap

do-catch 

- route:
    id: "my-yaml-route2"
    from:
      uri: "direct:tryCatch"
      steps:
        - do-try:
            steps:
              - to: "direct:readFile"
            do-catch:
              - exception:
                  - "java.io.FileNotFoundException"
                steps:
                  - transform:
                      constant: "do-catch caught an exception"
Copy to Clipboard Toggle word wrap 
@RegisterForReflection(targets = FileNotFoundException.class)
public class MyClass {
}
Copy to Clipboard Toggle word wrap
Nach oben
Red Hat logoGithubredditYoutubeTwitter

Lernen

Testen, kaufen und verkaufen

Communitys

Über Red Hat Dokumentation

Wir helfen Red Hat Benutzern, mit unseren Produkten und Diensten innovativ zu sein und ihre Ziele zu erreichen – mit Inhalten, denen sie vertrauen können. Entdecken Sie unsere neuesten Updates.

Mehr Inklusion in Open Source

Red Hat hat sich verpflichtet, problematische Sprache in unserem Code, unserer Dokumentation und unseren Web-Eigenschaften zu ersetzen. Weitere Einzelheiten finden Sie in Red Hat Blog.

Über Red Hat

Wir liefern gehärtete Lösungen, die es Unternehmen leichter machen, plattform- und umgebungsübergreifend zu arbeiten, vom zentralen Rechenzentrum bis zum Netzwerkrand.

Theme

© 2025 Red Hat