Tip of the day #7

If you are still not happy with my last tip about documentation, I will give you another chance. Do you know you can add package documentation with package-info.java file?

It will create a javadoc and will help your coworkers to understand why you packaged a group of classes.

Bônus:

If your company allows you to use an IA tool, you can ask chatGPT, CodePilot or “paste your tool here” to generate it for you:

  • I used chatGPT

Here is how it works:

Take a public package like this one: (if you like it, give me a star =D )

https://github.com/brunobaiano/temporal-tdc/tree/main/createAccount/src/main/java/com/github/brunobaiano/createAccount/workflows

Say to chatGPT: I will give you two classes in the same package, and you will create a package.info for me

chatGPT: Certainly! Please provide me with the two classes in the same package, and I’ll create a package-info.java file for you with appropriate documentation. Once you share the classes, I’ll proceed to create the documentation.

Paste the content of 2 classes and hit!

chatGPT: Here is the package-info.java file for you:

```java /**

  • Package containing workflows for creating user accounts.

  • This package provides workflows that enable the creation of user accounts using Temporal,
  • a workflow orchestration framework. The workflows are designed to be used in conjunction
  • with the Temporal service to manage the execution and coordination of the account creation process. *

  • CreateAccountWorkflow Interface

  • The {@link com.github.brunobaiano.createAccount.workflows.CreateAccountWorkflow} interface
  • represents the workflow for creating a user account. It is annotated with {@link io.temporal.workflow.WorkflowInterface},
  • indicating that it defines a Temporal workflow. *

  • Workflow Method

  • The {@link io.temporal.workflow.WorkflowMethod} annotation is used on the {@link com.github.brunobaiano.createAccount.workflows.CreateAccountWorkflow#createAccount()}
  • method to designate it as the main entry point for the account creation workflow. The method should be implemented
  • to perform the steps required for creating a new account, and it will be orchestrated by the Temporal service. *

  • Usage

  • To use the workflows in this package, you need to set up a Temporal worker that listens to the workflow tasks
  • and executes the defined workflows. The worker should register the {@link com.github.brunobaiano.createAccount.workflows.CreateAccountWorkflow}
  • interface as the target for the account creation workflow. *
  • {@code
  • // Example Temporal Worker Setup
  • CreateAccountWorkflow accountWorkflow = Workflow.newWorkflowStub(CreateAccountWorkflow.class); *
  • // Start the account creation workflow
  • Account account = accountWorkflow.createAccount(); *
  • // Account creation process will be orchestrated by the Temporal service
  • // … (more code to interact with the workflow)
  • }</pre> *

  • CreateAccountWorkflowImpl Class

  • The {@link com.github.brunobaiano.createAccount.workflows.CreateAccountWorkflowImpl} class implements
  • the {@link com.github.brunobaiano.createAccount.workflows.CreateAccountWorkflow} interface. It contains the workflow’s logic,
  • including the orchestration of activities to create a new account. *

  • Activities

  • The account creation workflow interacts with several activities, such as {@link com.github.brunobaiano.createAccount.activities.AccountActivity},
  • {@link com.github.brunobaiano.createAccount.activities.PersonActivity}, and {@link com.github.brunobaiano.createAccount.activities.CreditCardActivity}.
  • These activities are used to perform specific tasks in the account creation process. *

  • Retry Options

  • The workflow specifies a set of {@link io.temporal.common.RetryOptions} for handling activity failures.
  • This includes settings for initial interval, maximum interval, backoff coefficient, and maximum attempts
  • for activity retries in case of failures. *

  • Activity Options

  • The workflow also defines {@link io.temporal.activity.ActivityOptions} for activities, including the start-to-close
  • timeout and customized retry options. These options determine when to automatically timeout activities and how
  • to handle activity retries. */ package com.github.brunobaiano.createAccount.workflows;