terraform/tools/terraform-bundle/config.go

88 lines
2.1 KiB
Go

package main
import (
"fmt"
"io/ioutil"
"github.com/hashicorp/hcl"
"github.com/hashicorp/terraform/addrs"
"github.com/hashicorp/terraform/internal/getproviders"
"github.com/hashicorp/terraform/plugin/discovery"
)
var zeroThirteen = discovery.ConstraintStr(">= 0.13.0").MustParse()
type Config struct {
Terraform TerraformConfig `hcl:"terraform"`
Providers map[string]ProviderConfig `hcl:"providers"`
}
type TerraformConfig struct {
Version discovery.VersionStr `hcl:"version"`
}
type ProviderConfig struct {
Versions []string `hcl:"versions"`
Source string `hcl:"source"`
}
func LoadConfig(src []byte, filename string) (*Config, error) {
config := &Config{}
err := hcl.Decode(config, string(src))
if err != nil {
return config, err
}
err = config.validate()
return config, err
}
func LoadConfigFile(filename string) (*Config, error) {
src, err := ioutil.ReadFile(filename)
if err != nil {
return nil, err
}
return LoadConfig(src, filename)
}
func (c *Config) validate() error {
if c.Terraform.Version == "" {
return fmt.Errorf("terraform.version is required")
}
var v discovery.Version
var err error
if v, err = c.Terraform.Version.Parse(); err != nil {
return fmt.Errorf("terraform.version: %s", err)
}
if !zeroThirteen.Allows(v) {
return fmt.Errorf("this version of terraform-bundle can only build bundles for Terraform v0.13 and later; build terraform-bundle from a release tag (such as v0.12.*) to construct bundles for earlier versions")
}
if c.Providers == nil {
c.Providers = map[string]ProviderConfig{}
}
for k, cs := range c.Providers {
if cs.Source != "" {
_, diags := addrs.ParseProviderSourceString(cs.Source)
if diags.HasErrors() {
return fmt.Errorf("providers.%s: %s", k, diags.Err().Error())
}
}
if len(cs.Versions) > 0 {
for _, c := range cs.Versions {
if _, err := getproviders.ParseVersionConstraints(c); err != nil {
return fmt.Errorf("providers.%s: %s", k, err)
}
}
} else {
return fmt.Errorf("provider.%s: required \"versions\" argument not found", k)
}
}
return nil
}