func (ctx *BuiltinEvalContext) Interpolate(
cfg *config.RawConfig, r *Resource) (*ResourceConfig, error) {
if cfg != nil {
scope := &InterpolationScope{
Path: ctx.Path(),
Resource: r,
}
vs, err := ctx.Interpolater.Values(scope, cfg.Variables)
if err != nil {
return nil, err
}
// Do the interpolation
if err := cfg.Interpolate(vs); err != nil {
return nil, err
}
}
result := NewResourceConfig(cfg)
result.interpolateForce()
return result, nil
}
func TestResourceConfigGet(t *testing.T) {
cases := []struct {
Config map[string]interface{}
Vars map[string]string
Key string
Value interface{}
}{
{
Config: nil,
Key: "foo",
Value: nil,
},
{
Config: map[string]interface{}{
"foo": "${var.foo}",
},
Key: "foo",
Value: "${var.foo}",
},
{
Config: map[string]interface{}{
"foo": "${var.foo}",
},
Vars: map[string]string{"foo": "bar"},
Key: "foo",
Value: "bar",
},
{
Config: map[string]interface{}{
"foo": []interface{}{1, 2, 5},
},
Key: "foo.0",
Value: 1,
},
{
Config: map[string]interface{}{
"foo": []interface{}{1, 2, 5},
},
Key: "foo.5",
Value: nil,
},
}
for i, tc := range cases {
var rawC *config.RawConfig
if tc.Config != nil {
var err error
rawC, err = config.NewRawConfig(tc.Config)
if err != nil {
t.Fatalf("err: %s", err)
}
}
if tc.Vars != nil {
vs := make(map[string]ast.Variable)
for k, v := range tc.Vars {
vs["var."+k] = ast.Variable{Value: v, Type: ast.TypeString}
}
if err := rawC.Interpolate(vs); err != nil {
t.Fatalf("err: %s", err)
}
}
rc := NewResourceConfig(rawC)
rc.interpolateForce()
v, _ := rc.Get(tc.Key)
if !reflect.DeepEqual(v, tc.Value) {
t.Fatalf("%d bad: %#v", i, v)
}
}
}