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config: drop primary/prefer and treat all backends equally

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- unmerged /pdb/query/v4/* paths now go to the first backend that answers, not a designated primary
This commit is contained in:
Unkin Agent
2026-09-05 11:53:45 +10:00
parent ffc2499f98
commit 2391f56a11
12 changed files with 424 additions and 432 deletions
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reports_test.go
+10 -10
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@@ -8,17 +8,17 @@ import (
)
func TestMergeUnion_KeepsBothBackendsHistory(t *testing.T) {
old := recs(t, "old", report("h1", "r1", "2026-07-01T00:00:00Z"))
nw := recs(t, "new", report("h1", "r2", "2026-07-02T00:00:00Z"))
merged := mergeUnion([]backendResult{nw, old}, reportKey)
a := recs(t, "a", report("h1", "r1", "2026-07-01T00:00:00Z"))
b := recs(t, "b", report("h1", "r2", "2026-07-02T00:00:00Z"))
merged := mergeUnion([]backendResult{b, a}, reportKey)
if got := hashesOf(t, merged); !slices.Equal(got, []string{"r2", "r1"}) {
t.Errorf("union = %v, want both reports in precedence order", got)
t.Errorf("union = %v, want both reports in configured order", got)
}
}
func TestMergeUnion_DedupesSharedHash(t *testing.T) {
dup := report("h1", "r1", "2026-07-01T00:00:00Z")
merged := mergeUnion([]backendResult{recs(t, "new", dup), recs(t, "old", dup)}, reportKey)
merged := mergeUnion([]backendResult{recs(t, "b", dup), recs(t, "a", dup)}, reportKey)
if got := hashesOf(t, merged); !slices.Equal(got, []string{"r1"}) {
t.Errorf("union = %v, want a single r1", got)
}
@@ -27,9 +27,9 @@ func TestMergeUnion_DedupesSharedHash(t *testing.T) {
func TestMergeUnion_HashlessRowsAreAllKept(t *testing.T) {
// extract/group_by queries return synthetic rows with no hash; dropping the
// second backend's rows as "duplicates" would silently lose half the data.
old := recs(t, "old", `{"status":"changed","count":3}`)
nw := recs(t, "new", `{"status":"changed","count":5}`)
merged := mergeUnion([]backendResult{old, nw}, reportKey)
a := recs(t, "a", `{"status":"changed","count":3}`)
b := recs(t, "b", `{"status":"changed","count":5}`)
merged := mergeUnion([]backendResult{a, b}, reportKey)
if len(merged) != 2 {
t.Errorf("expected both aggregate rows, got %d: %v", len(merged), merged)
}
@@ -39,7 +39,7 @@ func TestMergeUnion_IdenticalHashlessRowsAreNotCollapsed(t *testing.T) {
// Two backends can legitimately produce the same aggregate row; collapsing
// them as duplicates undercounts the merged result.
same := `{"status":"changed","count":1}`
merged := mergeUnion([]backendResult{recs(t, "old", same), recs(t, "new", same)}, reportKey)
merged := mergeUnion([]backendResult{recs(t, "a", same), recs(t, "b", same)}, reportKey)
if len(merged) != 2 {
t.Errorf("expected both backends' aggregate rows, got %d: %v", len(merged), merged)
}
@@ -48,7 +48,7 @@ func TestMergeUnion_IdenticalHashlessRowsAreNotCollapsed(t *testing.T) {
func TestMergeUnion_EventsDedupeOnRawIdentity(t *testing.T) {
same := event("h1", "r1", "Package[nginx]")
other := event("h1", "r1", "Service[nginx]")
merged := mergeUnion([]backendResult{recs(t, "new", same, other), recs(t, "old", same)}, rawKey)
merged := mergeUnion([]backendResult{recs(t, "b", same, other), recs(t, "a", same)}, rawKey)
if len(merged) != 2 {
t.Errorf("expected 2 distinct events, got %d: %v", len(merged), merged)
}