terraform/internal/lang/funcs/sensitive.go

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package funcs
import (
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"github.com/hashicorp/terraform/internal/lang/marks"
"github.com/zclconf/go-cty/cty"
"github.com/zclconf/go-cty/cty/function"
)
// SensitiveFunc returns a value identical to its argument except that
// Terraform will consider it to be sensitive.
var SensitiveFunc = function.New(&function.Spec{
Params: []function.Parameter{
{
Name: "value",
Type: cty.DynamicPseudoType,
AllowUnknown: true,
AllowNull: true,
AllowMarked: true,
AllowDynamicType: true,
},
},
Type: func(args []cty.Value) (cty.Type, error) {
// This function only affects the value's marks, so the result
// type is always the same as the argument type.
return args[0].Type(), nil
},
Impl: func(args []cty.Value, retType cty.Type) (ret cty.Value, err error) {
val, _ := args[0].Unmark()
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return val.Mark(marks.Sensitive), nil
},
})
// NonsensitiveFunc takes a sensitive value and returns the same value without
// the sensitive marking, effectively exposing the value.
var NonsensitiveFunc = function.New(&function.Spec{
Params: []function.Parameter{
{
Name: "value",
Type: cty.DynamicPseudoType,
AllowUnknown: true,
AllowNull: true,
AllowMarked: true,
AllowDynamicType: true,
},
},
Type: func(args []cty.Value) (cty.Type, error) {
// This function only affects the value's marks, so the result
// type is always the same as the argument type.
return args[0].Type(), nil
},
Impl: func(args []cty.Value, retType cty.Type) (ret cty.Value, err error) {
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if args[0].IsKnown() && !args[0].HasMark(marks.Sensitive) {
return cty.DynamicVal, function.NewArgErrorf(0, "the given value is not sensitive, so this call is redundant")
}
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v, m := args[0].Unmark()
delete(m, marks.Sensitive) // remove the sensitive marking
return v.WithMarks(m), nil
},
})
func Sensitive(v cty.Value) (cty.Value, error) {
return SensitiveFunc.Call([]cty.Value{v})
}
func Nonsensitive(v cty.Value) (cty.Value, error) {
return NonsensitiveFunc.Call([]cty.Value{v})
}