Скачать или смотреть How to Effectively Use Go CLI Files Within Your Web Application

Discover how to run Go files independently for scheduled tasks without separating your web app structure. Learn to manage CLI commands within your main application effortlessly!
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This video is based on the question https://stackoverflow.com/q/69737604/ asked by the user 'Mert Simsek' ( https://stackoverflow.com/u/8842487/ ) and on the answer https://stackoverflow.com/a/69737949/ provided by the user 'Elias Van Ootegem' ( https://stackoverflow.com/u/1230836/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Using CLI Go Files in Your Web Application

When developing a web application using Go, you might find yourself needing to run certain command-line interface (CLI) functionalities independently from your web server. This guide addresses a common challenge faced by developers: how to utilize CLI Go files that belong to your web application, specifically in scheduled tasks like crontab.

The Problem

Consider the following structure of a Go application:

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In this scenario, you have a commands package that operates independently, while the rest of the application functions as a web server, initiated in main.go. The challenge arises when you want to execute the CLI files from the commands package as needed, particularly through a cron job.

Separating your logic into two distinct applications (a "web app" and a "command app") seems cumbersome and unnecessary due to their interconnected nature.

The Solution

You don’t need to separate your Go application into different projects. Rather, you can adopt a more organized structure within your existing application that allows you to run your command files independently while keeping everything in one place. Here’s how you can achieve this:

Restructuring Your Application

To effectively manage your Go files, consider restructuring your directories to include additional main packages. This commonly adopted practice keeps your CLI and web components closely integrated while allowing independent execution. Here’s a proposed directory structure:

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Building Your CLI Binary

Once you have restructured your project, you can build or install your CLI binary using the following commands:

To build the binary:

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To install the binary globally (allowing you to run it from anywhere):

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Running Your Commands

After building or installing the CLI, you can easily call the command files in your crontab or terminal as needed. For instance, if you want to run a command named my-command, you would simply enter:

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Conclusion

By incorporating a clear structure that allows you to manage CLI functionalities alongside your web application, you can streamline development without the overhead of maintaining multiple distinct applications. This way, you can easily run your command files while still leveraging their connection to your web app, thus ensuring efficiency and maintaining coherence within your codebase.

With this approach, you can optimize your Go application and leverage the full power of both web and command functionalities without unnecessary separation. Happy coding!