132 lines
3.1 KiB
Go
132 lines
3.1 KiB
Go
// The config package is responsible for loading and validating the
|
|
// configuration.
|
|
package config
|
|
|
|
import (
|
|
"fmt"
|
|
"strings"
|
|
)
|
|
|
|
// Config is the configuration that comes from loading a collection
|
|
// of Terraform templates.
|
|
type Config struct {
|
|
ProviderConfigs map[string]*ProviderConfig
|
|
Resources []*Resource
|
|
Variables map[string]*Variable
|
|
}
|
|
|
|
// ProviderConfig is the configuration for a resource provider.
|
|
//
|
|
// For example, Terraform needs to set the AWS access keys for the AWS
|
|
// resource provider.
|
|
type ProviderConfig struct {
|
|
RawConfig *RawConfig
|
|
}
|
|
|
|
// A resource represents a single Terraform resource in the configuration.
|
|
// A Terraform resource is something that represents some component that
|
|
// can be created and managed, and has some properties associated with it.
|
|
type Resource struct {
|
|
Name string
|
|
Type string
|
|
RawConfig *RawConfig
|
|
}
|
|
|
|
// Variable is a variable defined within the configuration.
|
|
type Variable struct {
|
|
Default string
|
|
Description string
|
|
defaultSet bool
|
|
}
|
|
|
|
// An InterpolatedVariable is a variable that is embedded within a string
|
|
// in the configuration, such as "hello ${world}" (world in this case is
|
|
// an interpolated variable).
|
|
//
|
|
// These variables can come from a variety of sources, represented by
|
|
// implementations of this interface.
|
|
type InterpolatedVariable interface {
|
|
FullKey() string
|
|
}
|
|
|
|
// A ResourceVariable is a variable that is referencing the field
|
|
// of a resource, such as "${aws_instance.foo.ami}"
|
|
type ResourceVariable struct {
|
|
Type string
|
|
Name string
|
|
Field string
|
|
|
|
key string
|
|
}
|
|
|
|
// A UserVariable is a variable that is referencing a user variable
|
|
// that is inputted from outside the configuration. This looks like
|
|
// "${var.foo}"
|
|
type UserVariable struct {
|
|
Name string
|
|
|
|
key string
|
|
}
|
|
|
|
// ProviderConfigName returns the name of the provider configuration in
|
|
// the given mapping that maps to the proper provider configuration
|
|
// for this resource.
|
|
func ProviderConfigName(t string, pcs map[string]*ProviderConfig) string {
|
|
lk := ""
|
|
for k, _ := range pcs {
|
|
if strings.HasPrefix(t, k) && len(k) > len(lk) {
|
|
lk = k
|
|
}
|
|
}
|
|
|
|
return lk
|
|
}
|
|
|
|
// A unique identifier for this resource.
|
|
func (r *Resource) Id() string {
|
|
return fmt.Sprintf("%s.%s", r.Type, r.Name)
|
|
}
|
|
|
|
// Validate does some basic semantic checking of the configuration.
|
|
func (c *Config) Validate() error {
|
|
// TODO(mitchellh): make sure all referenced variables exist
|
|
// TODO(mitchellh): make sure types/names have valid values (characters)
|
|
|
|
return nil
|
|
}
|
|
|
|
// Required tests whether a variable is required or not.
|
|
func (v *Variable) Required() bool {
|
|
return !v.defaultSet
|
|
}
|
|
|
|
func NewResourceVariable(key string) (*ResourceVariable, error) {
|
|
parts := strings.SplitN(key, ".", 3)
|
|
return &ResourceVariable{
|
|
Type: parts[0],
|
|
Name: parts[1],
|
|
Field: parts[2],
|
|
key: key,
|
|
}, nil
|
|
}
|
|
|
|
func (v *ResourceVariable) ResourceId() string {
|
|
return fmt.Sprintf("%s.%s", v.Type, v.Name)
|
|
}
|
|
|
|
func (v *ResourceVariable) FullKey() string {
|
|
return v.key
|
|
}
|
|
|
|
func NewUserVariable(key string) (*UserVariable, error) {
|
|
name := key[len("var."):]
|
|
return &UserVariable{
|
|
key: key,
|
|
Name: name,
|
|
}, nil
|
|
}
|
|
|
|
func (v *UserVariable) FullKey() string {
|
|
return v.key
|
|
}
|