[Use Pulumi With Kubernetes and Handle Loading Config as Well As Overrides] Not elegant but worked for round 1 #kubernetes #go #pulumi

pulumi-kubernetes-setup.go

package main

import (
	"fmt"
	"os"

	"github.com/pulumi/pulumi-kubernetes/sdk/v3/go/kubernetes"

	"github.com/pulumi/pulumi/sdk/v3/go/pulumi"
	"github.com/pulumi/pulumi/sdk/v3/go/pulumi/config"
)

type MyConfig struct {
	Namespace   string `yaml:"namespace"`
	Onlyyaml    bool   `yaml:"onlyyaml"`
	Environment string `yaml:"environment"`
	// ...  etc
}

func main() {
	pulumi.Run(func(ctx *pulumi.Context) error {
		pargs := &kubernetes.ProviderArgs{}
		var configData MyConfig // Custom config struct to load data into
		cfg := config.New(ctx, "")
		cfg.RequireObject("data", &configData)
		_ = ctx.Log.Info(fmt.Sprintf("Namespace set to: %q", configData.Namespace), &pulumi.LogArgs{})
		pargs.Namespace = pulumi.String(configData.Namespace)
		renderProviderName := "k8"
		homeDir, err := os.UserHomeDir()
		if err != nil {
			return err
		}
		if configData.Onlyyaml {
			_ = ctx.Log.Info("Onlyyaml set to true, so this won't deploy to k8 directly", nil)
			renderProviderName = "k8s-yaml-renderer"
			pargs.RenderYamlToDirectory = pulumi.String("yaml")
		} else {
			_ = ctx.Log.Info(fmt.Sprintf("homedir: %q", homeDir), nil)
			kubeConfigOverride, isSet := os.LookupEnv("KUBECONFIG")
			if isSet {
				_ = ctx.Log.Info(fmt.Sprintf("KUBECONFIG override: %q", kubeConfigOverride), nil)
				if _, err := os.Stat(kubeConfigOverride); err != nil {
					b, err := os.ReadFile(kubeConfigOverride)
					if err != nil {
						_ = ctx.Log.Error(fmt.Sprintf("Unable to read Kubeconfig override: %q, %v", kubeConfigOverride, err), nil)
					}
					pargs.Kubeconfig = pulumi.String(b)
				}
			} else {
				_ = ctx.Log.Info(fmt.Sprintf("KUBECONFIG using config in pulumi: %q", kubeConfigOverride), nil)
				pargs.Kubeconfig = pulumi.StringPtr("kubernetes:kubeconfig")
			}
		}
		renderProvider, err := kubernetes.NewProvider(ctx, renderProviderName, pargs)
		if err != nil {
			return err
		}
	})
}