unkinben
d9d8cc7b6d
The API returns null for empty arrays, but OpenTofu requires that the state match the plan exactly — an empty list [] in the plan must remain [] in the state, not become null. This caused "inconsistent result after apply" errors on every resource with empty optional list fields like mutable_patterns and ban_tags.
40 lines
1.0 KiB
Go
40 lines
1.0 KiB
Go
package provider
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import (
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"context"
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"github.com/hashicorp/terraform-plugin-framework/types"
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)
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func listToStrings(ctx context.Context, l types.List) []string {
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if l.IsNull() || l.IsUnknown() {
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return nil
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}
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var result []string
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l.ElementsAs(ctx, &result, false)
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return result
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}
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func stringsToList(ctx context.Context, ss []string) types.List {
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if ss == nil {
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return types.ListNull(types.StringType)
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}
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elems := make([]types.String, len(ss))
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for i, s := range ss {
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elems[i] = types.StringValue(s)
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}
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list, _ := types.ListValueFrom(ctx, types.StringType, elems)
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return list
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}
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// preserveListNullEmptySemantics keeps the prior null/empty distinction when
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// the API returns null for a field that was previously an empty list.
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// Without this, OpenTofu reports "inconsistent result after apply" because
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// the plan/state had [] but the provider returned null.
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func preserveListNullEmptySemantics(prior, current types.List) types.List {
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if current.IsNull() && !prior.IsNull() && len(prior.Elements()) == 0 {
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return prior
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}
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return current
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}
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