Blog

MuleSoft Project Folder Structure

1. Project Root

• Contains the primary files for project configuration and build.
  • pom.xml: The Maven build file.
  • .gitignore: Specifies files to be ignored by Git.
  • .mule: Stores runtime information for Anypoint Studio.

2. src/main/mule

• Stores the main configuration files for the Mule application.
  • main-mule.xml: Contains the primary Mule flows and integrations.

3. src/main/resources

• Includes static resources and external configurations.
  • config.properties: Stores key-value pairs for application settings.

4. src/main/java

• Stores Java classes if the application requires custom logic.
  • CustomLogger.java: A sample Java class for custom functionality.

5. src/test/mule

• Contains test-specific configuration files for MUnit tests.
  • test-mule.xml: A sample test configuration.

6. src/test/resources

• Includes resources specifically for testing, such as mock data.

7. src/test/java

• Stores unit test classes.
  • TestCustomLogger.java: A Java test class for custom components.

8. target

• Created during the build process to store the compiled application.
  • my-mule-app.jar: The deployable Mule application archive.

The MuleSoft Anypoint Platform uses a specific folder structure for organizing projects and assets. Here is the general folder structure used in Anypoint Studio and for deploying Mule applications:

1. src/main/mule

• This folder contains the main Mule configuration files (XML files) for your application.
• Example: main-mule.xml
• Purpose: Stores all the flow configurations, connectors, transformations, and other Mule-specific logic.

2. src/main/resources

• This directory is used for non-Mule configuration files, such as properties files, CSVs, and other resources needed by the Mule application.
• Example: config.properties
• Purpose: Contains resources like external configurations or static data files.

3. src/main/java

• This folder is used for Java code and classes that are used within your Mule project, if your Mule application requires custom Java logic or classes.
• Example: CustomLogger.java
• Purpose: To store custom Java classes that can be used in your Mule flows.

4. src/test/mule

• This folder contains test-specific Mule configuration files.
• Purpose: Used for unit tests of Mule flows (typically using MUnit).

5. src/test/resources

• Contains resources specific to the tests.
• Purpose: Includes test resources such as mock data, configuration for test environments, etc.

6. src/test/java

• This directory is where unit test classes (typically in Java) are placed for testing custom Java components and logic.
• Purpose: Stores Java test files for Mule components.

7. pom.xml

• Location: The root of the project.
• Purpose: The Maven configuration file that defines the dependencies, build process, and deployment specifications for your Mule application.

8. target

• Location: Automatically created when you build the project.
• Purpose: This folder contains the output of the build process, including the deployable .jar file.

9. .mule

• Location: In the root of the project.
• Purpose: Contains runtime information for Anypoint Studio, such as configurations for local server deployments.

10. .gitignore

• Location: Typically in the root directory.
• Purpose: Specifies which files and directories to ignore during version control (Git).

Example Folder Structure:

my-mule-project/
├── src/
│   ├── main/
│   │   ├── java/
│   │   │   └── CustomLogger.java
│   │   ├── mule/
│   │   │   └── main-mule.xml
│   │   ├── resources/
│   │   │   └── config.properties
│   └── test/
│       ├── java/
│       └── mule/
│           └── test-mule.xml
├── target/
│   └── my-mule-app.jar
├── .gitignore
└── pom.xml

This structure is used to ensure that Mule applications are modular, easy to maintain, and ready for deployment to various environments, such as local, development, staging, or production.

Understanding MuleSoft Connector Project Structure

MuleSoft’s DevKit (compatible with Studio 6 and Mule 3) is a powerful tool for building custom connectors. This guide outlines the folder structure and key components of an Anypoint Connector project, ensuring you have a clear understanding of its architecture.

Prerequisites

Before diving into the folder structure, ensure you’ve created a new connector project using Anypoint Studio or Eclipse. Your connector project should have a directory structure similar to the one outlined below.