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feat(atlas): hybrid substrate — live specs for cluster nodes, authored rest
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MergeSubstrate overlays live node specs onto the authored machine list by name:
cluster nodes (koala) get fresh live specs, non-cluster machines (iguana/flamingo/
piguard) stay authored, new live nodes are appended. Test-first. Restores the full
homelab machine list while keeping cluster nodes truthful.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
mathias
2026-07-20 00:47:53 +02:00
co-authored by Claude Opus 4.8
parent 74dffc1ff3
commit 39fd9b9adc
3 changed files with 59 additions and 1 deletions
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internal/atlas/cluster_test.go
+31
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@@ -31,6 +31,37 @@ func TestHostsFromNodes_DerivesSpecFromNodeStatus(t *testing.T) {
}
}
func TestMergeSubstrate_LiveOverridesAuthoredKeepsRestAppendsNew(t *testing.T) {
authored := []atlas.Host{
{Name: "koala", Spec: "RTX 5070 · authored"},
{Name: "iguana", Spec: "M2 Ultra · Ollama / mlx"},
{Name: "piguard", Spec: "NGINX reverse-proxy · ntfy"},
}
live := []atlas.Host{
{Name: "koala", Spec: "amd64 · 16 cpu · 60Gi · 1× GPU · k3s v1.34.5"},
{Name: "worker9", Spec: "arm64 · 4 cpu"},
}
got := atlas.MergeSubstrate(authored, live)
want := []atlas.Host{
{Name: "koala", Spec: "amd64 · 16 cpu · 60Gi · 1× GPU · k3s v1.34.5"}, // live wins
{Name: "iguana", Spec: "M2 Ultra · Ollama / mlx"}, // authored kept
{Name: "piguard", Spec: "NGINX reverse-proxy · ntfy"}, // authored kept
{Name: "worker9", Spec: "arm64 · 4 cpu"}, // live-only appended
}
if !reflect.DeepEqual(got, want) {
t.Fatalf("merge = %+v\nwant %+v", got, want)
}
}
func TestMergeSubstrate_NoLiveReturnsAuthored(t *testing.T) {
authored := []atlas.Host{{Name: "koala", Spec: "authored"}}
got := atlas.MergeSubstrate(authored, nil)
if !reflect.DeepEqual(got, authored) {
t.Fatalf("merge with no live = %+v, want %+v", got, authored)
}
}
func TestHostsFromNodes_ErrorsOnBadJSON(t *testing.T) {
if _, err := atlas.HostsFromNodes([]byte("{not json")); err == nil {
t.Fatal("expected error on bad JSON, got nil")