feat(chatops-lark): add health checking

[wuhuizuo]

This pull request introduces significant updates to the chatops-lark bot, including new documentation, the addition of a health check server, and improvements to the main server functionality. The most important changes are summarized below:

Documentation Updates:

• chatops-lark/README.md: Added a new section detailing how to debug, run locally, and deploy the chatops-lark bot. This includes configuration examples and deployment instructions using FluxCD.

Server Enhancements:

• chatops-lark/cmd/server/main.go: Introduced a health check HTTP server that listens on a configurable address (http-addr) and responds with "OK" on the /healthz endpoint. This server runs in a separate goroutine. [1] [2]
• chatops-lark/cmd/server/main.go: Improved logging for the WebSocket client by specifying the log message when the client fails to start.

Codebase Improvements:

• chatops-lark/cmd/server/main.go: Added the net/http package import to support the new health check server functionality.

[ti-chi-bot]

I have already done a preliminary review for you, and I hope to help you do a better job.

Key Changes:

1. Added a new README.md file with instructions for debugging, running locally, and deployment.
2. Added an HTTP health check server to the main.go file for the ChatOps Lark Bot.
3. Modified the main.go file to include handling of HTTP health check endpoint and setting up a Lark WebSocket client.

Potential Problems:

1. Missing PR Description: The Pull Request description is empty. It's good practice to provide a brief description of the changes made in the PR.
2. HTTP Address Configuration: The HTTP address for health checks is hardcoded as :8080. It might be better to make this configurable or provide a default value that can be overridden.
3. Error Handling: The error handling in the code is minimal. It would be beneficial to have more robust error handling, especially for starting the HTTP server and WebSocket client.

Fixing Suggestions:

1. PR Description: Add a description to the PR summarizing the changes made.
2. HTTP Address Configurability: Consider making the HTTP address for health checks configurable via a command-line flag or environment variable.
3. Improved Error Handling: Enhance error handling in the code, especially for starting the HTTP server and WebSocket client. You could consider adding retries or logging more detailed error messages.

Overall, the addition of a health check endpoint is a good feature to ensure the ChatOps Lark Bot's availability and reliability. Addressing the potential problems and implementing the fixing suggestions will help improve the code quality and maintainability.

[ti-chi-bot]

I have already done a preliminary review for you, and I hope to help you do a better job.

Key Changes:

1. Documentation Updates:

   • Added a new section in chatops-lark/README.md detailing how to debug, run locally, and deploy the chatops-lark bot.

2. Server Enhancements:

   • Introduced a health check HTTP server in chatops-lark/cmd/server/main.go that listens on a configurable address and responds with "OK" on the /healthz endpoint.
   • Improved logging for the WebSocket client in the server.

3. Codebase Improvements:

   • Added the net/http package import to support the new health check server functionality.

Potential Problems:

1. No Error Handling in the HTTP Server Setup:
   The HTTP server setup for health checks in the main server does not have error handling for http.ListenAndServe. It would be good to add proper error handling to handle potential failures in starting the server.

2. Missing log Package Import:
   The code refers to log.Info() and log.Fatal() functions but does not import the log package. Ensure that the necessary logging package is imported to avoid compilation errors.

Fixing Suggestions:

1. Error Handling for http.ListenAndServe:
   Add error handling for http.ListenAndServe to manage any errors that might occur during the startup of the health check server. You can log the error and handle it gracefully.

2. Import the Logging Package:
   Make sure to import the logging package at the beginning of the main.go file to resolve references to log.Info() and log.Fatal() functions. For example:

   import (
       "log"
       // other imports
   )

3. Consistent Logging:
   It's recommended to use consistent logging throughout the codebase. Ensure that all log messages follow a similar format and level of detail for better readability and maintenance.

Overall, the changes look good, but addressing the potential problems mentioned above will help improve the robustness and maintainability of the code.

[wuhuizuo]

/approve

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: wuhuizuo

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