go-manifest

go-manifest is a Go library inspired by manifestival, but with a focus on using Kubernetes Server-Side Apply. Server-Side Apply is a powerful feature introduced in Kubernetes that allows you to declaratively update resources on the server side, which can be more efficient and reliable than traditional imperative updates.

Installation

To use go-manifest in your Go project, you can simply add it as a dependency:

go get github.com/cloud104/go-manifest

Usage

Here's a basic example of how to use go-manifest:

package main

import (
	"context"
	"log"

	"github.com/cloud104/go-manifest"
	"k8s.io/client-go/rest"
)

func main() {
	// Get the Kubernetes cluster configuration
	config, err := rest.InClusterConfig()
	if err != nil {
		log.Fatal(err)
	}

	// Instantiate a new ManifestReader by specifying the field manager and the Kubernetes cluster configuration
	mr, err := manifest.NewReader("totvs-cloud", config)
	if err != nil {
		log.Fatal(err)
	}

	// Create a new Manifest object
	m, err := mr.FromPath("path/to/your/manifest.yaml", false)
	if err != nil {
		log.Fatal(err)
	}

	// Apply the manifest using Server-Side Apply
	if err = m.Apply(context.Background()); err != nil {
		log.Fatal(err)
	}

	log.Println("Manifest applied successfully!")
}

In this example, we create a Manifest object by specifying the path to your Kubernetes manifest file. Then, we use the Apply method to apply the manifest using Server-Side Apply.

Contributing

Contributions are welcome! If you find a bug or have a feature request, please open an issue on the GitHub repository.

Acknowledgments

This library is inspired by manifestival and leverages the power of Kubernetes Server-Side Apply. We are grateful to the open-source community and the Kubernetes project for making these tools available.