Logging using JSON Logger in MuleSoft

_ June 29, 2024_ Asish Palata

Overview:

Now let’s configure our Mule application to use the JSON Logger and see the demo about the features provided by it.

Step 1:

Open the Anypoint Studio create a Mule project and provide a name for the project.

Step 2:

Now drag and drop a Flow and add an HTTP listener to it to create a source listener to get the mule event for the application.

Step 3:

Now we need to configure the HTTP listener by providing the connector configuration and path.
In connector configuration we need to provide the below details.
- Protocol: HTTP or HTTPS
- Host: All Interfaces[0.0.0.0](default)
- Port:8081
Rest we can leave as default.
Then hit OK.

Step 4:

To add the JSON Logger we need to have an active account on Nexus Repository. From there we can get the dependency for the JSON Logger and we can add it to the POM.xml file of the application to use the JSON Logger.
We are using the JSON Logger for the demo. We need to drag it to the mule flow.
In the JSON Logger we need to some basic configuration.
Module configuration:
- In connection we need to provide application name, application version and environment fields as these are mandatory.
- All these filed values can be derived from properties file or we can give the static value as well.
- Application name: ${json.logger.application.name}
- Application Version: ${json.logger.application.version}
- Environment: ${mule.env}
- We need to create properties file on main/resources and define key value pairs in order to populate the values to the above placeholders.

Pretty Print-> It is used to print the logs in an accurate JSON format.
Trace point -> Basically used to track the log in the flow as START,FLOW,EXCEPTION,END,BEFORE_REQUEST,AFTER_REQUEST,BEFORE_TRANSFORM,AFTER_TRANSFORM