代码

package mainimport ("fmt""github.com/hashicorp/hcl/v2/hclwrite""github.com/zclconf/go-cty/cty""os""io/ioutil"
)func main() {// 创建一个空的文件体系f := hclwrite.NewEmptyFile()// 创建一个body对象，所有的hcl元素都将附加在这个对象上body := f.Body()//var re cty.Valuere := cty.StringVal("ami-abc123")ak := cty.StringVal("ami-abc123")sk := cty.StringVal("ami-abc123")region := cty.StringVal("ami-abc123")//创建privaderprivader := body.AppendNewBlock("provider", []string{"alicloud"}).Body()privader.SetAttributeValue("access_key", ak)privader.SetAttributeValue("secret_key", sk)privader.SetAttributeValue("region", region)// 创建一个resource元素，并且添加到body中resource := body.AppendNewBlock("resource", []string{"aws_instance", "web"}).Body()//resource.SetAttributeValue("ami", "ami-abc123")//resource.SetAttributeValue("instance_type", "t2.micro")resource.SetAttributeValue("ami", re)resource.SetAttributeValue("instance_type", re)// 创建一个output元素，并且添加到body中output := body.AppendNewBlock("output", []string{"web_ip"}).Body()//output.SetAttributeValue("value", "${aws_instance.web.private_ip}")output.SetAttributeValue("value", re)// 将内容写入到文件中_,err := f.WriteTo(os.Stdout)if err != nil {fmt.Println("Error:", err)return}//fmt.Printf("n:%v\n",n)// 将格式化后的HCL代码写入文件err = ioutil.WriteFile("example.tf", f.Bytes(), 0644)if err != nil {fmt.Println("Error:", err)return}fmt.Println("Terraform configuration updated successfully.")

执行结果：

# go run hclwrite2.go
provider "alicloud" {access_key = "ami-abc123"secret_key = "ami-abc123"region     = "ami-abc123"
}
resource "aws_instance" "web" {ami           = "ami-abc123"instance_type = "ami-abc123"
}
output "web_ip" {value = "ami-abc123"
}
Terraform configuration updated successfully.
# cat example.tf 
provider "alicloud" {access_key = "ami-abc123"secret_key = "ami-abc123"region     = "ami-abc123"
}
resource "aws_instance" "web" {ami           = "ami-abc123"instance_type = "ami-abc123"
}
output "web_ip" {value = "ami-abc123"
}