Generate a presigned URL for AWS IAM

main.go

package main

import (
	"context"
	"fmt"

	"github.com/aws/aws-sdk-go-v2/config"
	"github.com/aws/aws-sdk-go-v2/service/sts"
	smithyhttp "github.com/aws/smithy-go/transport/http"
)

func main() {
	cfg, err := config.LoadDefaultConfig(context.TODO())
	if err != nil {
		panic("configuration error, " + err.Error())
	}
	svc := sts.NewFromConfig(cfg)
	presignClient := sts.NewPresignClient(svc)

	sts.WithPresignClientFromClientOptions()
	appendPresignHeaderValuesFunc := func(server string) func(stsOptions *sts.Options) {
		return func(stsOptions *sts.Options) {
			// Add clientName Header
			stsOptions.APIOptions = append(stsOptions.APIOptions, smithyhttp.SetHeaderValue("X-server-name", server))
			// Add X-Amz-Expires query param
			stsOptions.APIOptions = append(stsOptions.APIOptions, smithyhttp.SetHeaderValue("X-Amz-Expires", "60"))

		}
	}
	getCallerIdentity, err := presignClient.PresignGetCallerIdentity(context.Background(), &sts.GetCallerIdentityInput{}, func(presignOptions *sts.PresignOptions) {
		presignOptions.ClientOptions = append(presignOptions.ClientOptions, appendPresignHeaderValuesFunc("api-gw-service"))
	})
	if err != nil {
		panic(err)
	}
	fmt.Printf("%s", getCallerIdentity.URL)
}