config: special detect ResourceVariables for multi-access
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4b5f5aec65
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@ -63,9 +63,10 @@ type InterpolatedVariable interface {
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// A ResourceVariable is a variable that is referencing the field
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// of a resource, such as "${aws_instance.foo.ami}"
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type ResourceVariable struct {
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Type string
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Name string
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Field string
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Type string // Resource type, i.e. "aws_instance"
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Name string // Resource name
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Field string // Resource field
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Multi bool // True if multi-variable: aws_instance.foo.*.id
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key string
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}
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@ -203,10 +204,19 @@ func (v *Variable) Required() bool {
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func NewResourceVariable(key string) (*ResourceVariable, error) {
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parts := strings.SplitN(key, ".", 3)
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field := parts[2]
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multi := false
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if idx := strings.Index(field, "."); idx != -1 && field[:idx] == "*" {
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multi = true
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field = field[idx+1:]
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}
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return &ResourceVariable{
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Type: parts[0],
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Name: parts[1],
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Field: parts[2],
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Field: field,
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Multi: multi,
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key: key,
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}, nil
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}
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@ -58,12 +58,35 @@ func TestNewResourceVariable(t *testing.T) {
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if v.Field != "baz" {
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t.Fatalf("bad: %#v", v)
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}
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if v.Multi {
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t.Fatal("should not be multi")
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}
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if v.FullKey() != "foo.bar.baz" {
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t.Fatalf("bad: %#v", v)
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}
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}
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func TestResourceVariable_Multi(t *testing.T) {
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v, err := NewResourceVariable("foo.bar.*.baz")
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if err != nil {
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t.Fatalf("err: %s", err)
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}
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if v.Type != "foo" {
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t.Fatalf("bad: %#v", v)
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}
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if v.Name != "bar" {
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t.Fatalf("bad: %#v", v)
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}
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if v.Field != "baz" {
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t.Fatalf("bad: %#v", v)
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}
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if !v.Multi {
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t.Fatal("should be multi")
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}
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}
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func TestNewUserVariable(t *testing.T) {
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v, err := NewUserVariable("var.bar")
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if err != nil {
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