DZone
Thanks for visiting DZone today,
Edit Profile
  • Manage Email Subscriptions
  • How to Post to DZone
  • Article Submission Guidelines
Sign Out View Profile
  • Post an Article
  • Manage My Drafts
Over 2 million developers have joined DZone.
Log In / Join
Refcards Trend Reports Events Over 2 million developers have joined DZone. Join Today! Thanks for visiting DZone today,
Edit Profile Manage Email Subscriptions Moderation Admin Console How to Post to DZone Article Submission Guidelines
View Profile
Sign Out
Refcards
Trend Reports
Events
Zones
Culture and Methodologies Agile Career Development Methodologies Team Management
Data Engineering AI/ML Big Data Data Databases IoT
Software Design and Architecture Cloud Architecture Containers Integration Microservices Performance Security
Coding Frameworks Java JavaScript Languages Tools
Testing, Deployment, and Maintenance Deployment DevOps and CI/CD Maintenance Monitoring and Observability Testing, Tools, and Frameworks
Culture and Methodologies
Agile Career Development Methodologies Team Management
Data Engineering
AI/ML Big Data Data Databases IoT
Software Design and Architecture
Cloud Architecture Containers Integration Microservices Performance Security
Coding
Frameworks Java JavaScript Languages Tools
Testing, Deployment, and Maintenance
Deployment DevOps and CI/CD Maintenance Monitoring and Observability Testing, Tools, and Frameworks
  1. DZone
  2. Software Design and Architecture
  3. Integration
  4. Groovy Component With Mule ESB

Groovy Component With Mule ESB

Learn how the Groovy component is used in Mule flows to integrate custom scripts. This tutorial shows you how to configure and utilize the Groovy component.

Jitendra Bafna user avatar by
Jitendra Bafna
CORE ·
May. 30, 17 · Tutorial
Like (3)
Save
Tweet
Share
20.39K Views

Join the DZone community and get the full member experience.

Join For Free

The Groovy component is very similar to Python, Ruby or Java components. The Groovy component provides developers with the facilities to integrate custom scripts into a flow using the Groovy scripting engine.

As an example, you can write a custom script using Groovy language for an application, save it in a separate file and then configure the Groovy component to reference the file. Or, after placing the Groovy component on the Studio canvas you can type in the script through the Groovy Pattern Properties pane.

Place the Groovy component in the message processor region from the Mule palette.

Image title

Image title

Use the Advanced tab to configure the interceptors and property for the Groovy component.

Interceptors enable the developer to provide additional services to the component, such as the ability to log transactions and the ability to log the time for each transaction.

Configure these parameters to define attribute keys and their associated values. This enables the component to quickly look up a value associated with a key.

Image title

<?xml version="1.0" encoding="UTF-8"?>

<mule xmlns:scripting="http://www.mulesoft.org/schema/mule/scripting" xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:doc="http://www.mulesoft.org/schema/mule/documentation"
xmlns:spring="http://www.springframework.org/schema/beans" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-current.xsd
http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/current/mule.xsd
http://www.mulesoft.org/schema/mule/scripting http://www.mulesoft.org/schema/mule/scripting/current/mule-scripting.xsd">
    <flow name="sdfsffsdFlow">
        <scripting:component doc:name="Groovy">
            <scripting:script engine="Groovy"><![CDATA[a=10
b=20

sum=Integer.parseInt(a)+Integer.parseInt(b)]]></scripting:script>
        </scripting:component>
    </flow>
</mule>

Accessing Flow Variable in the Groovy Component

message.getInvocationProperty('myFlowVariable')

OR

message.getProperty('myFlowVariable',org.mule.api.transport.PropertyScope.INVOCATION)

OR

flowVars['myFlowVariable']

Accessing Session Variable in the Groovy Component

message.getSessionProperty('mySessionVariable')

OR

message.getProperty('mySessionVariable',org.mule.api.transport.PropertyScope.SESSION)

OR

sessionVars['mySessionVariable']

Setting a Property in the Groovy Component

Go to the Advanced tab and add a property.

Image title

<?xml version="1.0" encoding="UTF-8"?>

<mule xmlns:scripting="http://www.mulesoft.org/schema/mule/scripting" xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:doc="http://www.mulesoft.org/schema/mule/documentation"
xmlns:spring="http://www.springframework.org/schema/beans" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-current.xsd
http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/current/mule.xsd
http://www.mulesoft.org/schema/mule/scripting http://www.mulesoft.org/schema/mule/scripting/current/mule-scripting.xsd">
    <flow name="sdfsffsdFlow">
        <scripting:component doc:name="Groovy">
            <scripting:script engine="Groovy">
                <property key="num1" value="#[flowVars.a]"/>
                <property key="num2" value="#[flowVars.b]"/><![CDATA[sum=Integer.parseInt(num1)+Integer.parseInt(num2)]]></scripting:script>
        </scripting:component>
    </flow>
</mule>

Here is the video tutorial:


Now you know how to use the Groovy component with Mule ESB.

Groovy (programming language) Enterprise service bus

Opinions expressed by DZone contributors are their own.

Popular on DZone

  • Explainer: Building High Performing Data Product Platform
  • New MacBook Air Beats M1 Max for Java Development
  • Simulating and Troubleshooting StackOverflowError in Kotlin
  • Promises, Thenables, and Lazy-Evaluation: What, Why, How

Comments

Partner Resources

X

ABOUT US

  • About DZone
  • Send feedback
  • Careers
  • Sitemap

ADVERTISE

  • Advertise with DZone

CONTRIBUTE ON DZONE

  • Article Submission Guidelines
  • Become a Contributor
  • Visit the Writers' Zone

LEGAL

  • Terms of Service
  • Privacy Policy

CONTACT US

  • 600 Park Offices Drive
  • Suite 300
  • Durham, NC 27709
  • support@dzone.com
  • +1 (919) 678-0300

Let's be friends: