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Retrieve project after detecting changes #3798

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Jun 6, 2019
Merged

Retrieve project after detecting changes #3798

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12 changes: 8 additions & 4 deletions google/resource_compute_instance_template.go
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Original file line number Diff line number Diff line change
Expand Up @@ -477,14 +477,18 @@ func resourceComputeInstanceTemplate() *schema.Resource {

func resourceComputeInstanceTemplateSourceImageCustomizeDiff(diff *schema.ResourceDiff, meta interface{}) error {
config := meta.(*Config)
project, err := getProjectFromDiff(diff, config)
if err != nil {
return err
}

numDisks := diff.Get("disk.#").(int)
for i := 0; i < numDisks; i++ {
key := fmt.Sprintf("disk.%d.source_image", i)
if diff.HasChange(key) {
// project must be retrieved once we know there is a diff to resolve, otherwise it will
// attempt to retrieve project during `plan` before all calculated fields are ready
// see https://github.com/terraform-providers/terraform-provider-google/issues/2878
project, err := getProjectFromDiff(diff, config)
if err != nil {
return err
}
old, new := diff.GetChange(key)
if old == "" || new == "" {
// no sense in resolving empty strings
Expand Down