mirror of
https://github.com/rcourtman/Pulse.git
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chore(metrics): move store regression proof into accepted proof file
The canonical completion guard requires the metrics-store hot-path proof in pkg/metrics/store_additional_test.go. Move the rollup-gap, upsert-spread, busy-retry and auto-vacuum regressions there and point the performance-and-scalability contract at that file. The runtime change and contract section are in the preceding fix(metrics) commit. Change-source: pulse-maintainer
This commit is contained in:
pulse-triage[bot]
parent
e1d97b361e
commit
087bbf8c20
3 changed files with 180 additions and 181 deletions
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@ -1542,3 +1542,180 @@ func TestConcurrentWritesDuringShutdownDoNotPanic(t *testing.T) {
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close(stop)
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wg.Wait()
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}
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// TestStoreRollupTierBackfillsInterspersedGap verifies that a rollup checkpoint
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// does not leap over a gap between already-processed source windows. A late
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// backfill into that gap must still be aggregated on a later run instead of
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// being stranded below the checkpoint and eventually purged.
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func TestStoreRollupTierBackfillsInterspersedGap(t *testing.T) {
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dir := t.TempDir()
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cfg := DefaultConfig(dir)
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cfg.DBPath = filepath.Join(dir, "metrics-rollup-gap.db")
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cfg.FlushInterval = time.Hour
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store, err := NewStore(cfg)
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if err != nil {
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t.Fatalf("NewStore returned error: %v", err)
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}
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defer store.Close()
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base := time.Now().UTC().Add(-4 * time.Hour).Truncate(time.Hour)
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firstHour := base.Unix()
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thirdHour := base.Add(2 * time.Hour).Unix()
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gapHour := base.Add(time.Hour).Unix()
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if _, err := store.db.Exec(
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`INSERT INTO metrics (resource_type, resource_id, metric_type, value, min_value, max_value, timestamp, tier) VALUES
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('vm','vm-gap','cpu',1.0,1.0,1.0,?, 'minute'),
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('vm','vm-gap','cpu',3.0,3.0,3.0,?, 'minute')`, firstHour, thirdHour); err != nil {
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t.Fatalf("insert source rows: %v", err)
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}
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store.rollupTier(TierMinute, TierHourly, time.Hour, time.Hour)
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// Backfill the interspersed gap after the first rollup ran.
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if _, err := store.db.Exec(
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`INSERT INTO metrics (resource_type, resource_id, metric_type, value, min_value, max_value, timestamp, tier) VALUES
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('vm','vm-gap','cpu',2.0,2.0,2.0,?, 'minute')`, gapHour); err != nil {
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t.Fatalf("backfill gap row: %v", err)
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}
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store.rollupTier(TierMinute, TierHourly, time.Hour, time.Hour)
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var count int
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if err := store.db.QueryRow(
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`SELECT COUNT(*) FROM metrics WHERE tier='hourly' AND resource_id='vm-gap' AND timestamp=?`, gapHour).Scan(&count); err != nil {
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t.Fatalf("query hourly gap: %v", err)
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}
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if count != 1 {
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t.Fatalf("expected backfilled gap hour %d to roll up to hourly, got %d rows", gapHour, count)
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}
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}
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// TestStoreWriteBatchPreservesRollupSpread verifies that a direct write to an
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// aggregate tier does not erase an existing rollup row's min/max spread. The
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// write statement omits min/max, so excluded.* are NULL and a naive upsert
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// would null the stored spread.
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func TestStoreWriteBatchPreservesRollupSpread(t *testing.T) {
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dir := t.TempDir()
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cfg := DefaultConfig(dir)
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cfg.DBPath = filepath.Join(dir, "metrics-spread.db")
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cfg.FlushInterval = time.Hour
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store, err := NewStore(cfg)
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if err != nil {
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t.Fatalf("NewStore returned error: %v", err)
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}
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defer store.Close()
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ts := time.Now().UTC().Add(-2 * time.Hour).Truncate(time.Minute)
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if _, err := store.db.Exec(
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`INSERT INTO metrics (resource_type, resource_id, metric_type, value, min_value, max_value, timestamp, tier) VALUES
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('vm','vm-spread','cpu',5.0,1.0,9.0,?, 'minute')`, ts.Unix()); err != nil {
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t.Fatalf("insert rollup row: %v", err)
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}
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store.writeBatch([]bufferedMetric{
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{resourceType: "vm", resourceID: "vm-spread", metricType: "cpu", value: 7.0, timestamp: ts, tier: TierMinute},
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})
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var minValue, maxValue sql.NullFloat64
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if err := store.db.QueryRow(
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`SELECT min_value, max_value FROM metrics WHERE tier='minute' AND resource_id='vm-spread' AND timestamp=?`, ts.Unix()).Scan(&minValue, &maxValue); err != nil {
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t.Fatalf("query spread: %v", err)
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}
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if !minValue.Valid || !maxValue.Valid {
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t.Fatalf("direct write erased rollup spread: min=%+v max=%+v", minValue, maxValue)
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}
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if minValue.Float64 != 1.0 || maxValue.Float64 != 9.0 {
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t.Fatalf("unexpected spread after direct write: min=%v max=%v", minValue.Float64, maxValue.Float64)
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}
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}
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func TestIsRetryableWriteError(t *testing.T) {
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cases := []struct {
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name string
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err error
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want bool
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}{
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{"nil", nil, false},
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{"driver busy", fmt.Errorf("database is locked (5) (SQLITE_BUSY)"), true},
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{"legacy busy", fmt.Errorf("database is locked"), true},
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{"closed pool", fmt.Errorf("sql: database is closed"), true},
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{"unrelated", fmt.Errorf("no such table: metrics"), false},
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}
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for _, tc := range cases {
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if got := isRetryableWriteError(tc.err); got != tc.want {
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t.Fatalf("%s: isRetryableWriteError(%v) = %v, want %v", tc.name, tc.err, got, tc.want)
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}
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}
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}
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// TestIsRetryableWriteErrorMatchesDriverBusyCode proves the classifier matches
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// a real SQLITE_BUSY error returned by the modernc driver, not just its message.
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func TestIsRetryableWriteErrorMatchesDriverBusyCode(t *testing.T) {
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dir := t.TempDir()
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path := filepath.Join(dir, "busy.db")
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holder, err := sql.Open("sqlite", "file:"+path+"?_pragma=busy_timeout(0)")
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if err != nil {
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t.Fatalf("open holder: %v", err)
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}
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defer holder.Close()
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holder.SetMaxOpenConns(1)
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if _, err := holder.Exec("CREATE TABLE t (x INTEGER)"); err != nil {
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t.Fatalf("create table: %v", err)
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}
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if _, err := holder.Exec("BEGIN IMMEDIATE"); err != nil {
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t.Fatalf("begin immediate: %v", err)
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}
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defer holder.Exec("ROLLBACK")
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waiter, err := sql.Open("sqlite", "file:"+path+"?_pragma=busy_timeout(0)")
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if err != nil {
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t.Fatalf("open waiter: %v", err)
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}
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defer waiter.Close()
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_, err = waiter.Exec("BEGIN IMMEDIATE")
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if err == nil {
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waiter.Exec("ROLLBACK")
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t.Skip("driver did not report SQLITE_BUSY on a contended write lock")
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}
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if !isRetryableWriteError(err) {
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t.Fatalf("real driver busy error not classified retryable: %v", err)
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}
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}
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// TestStoreAutoVacuumPersistsAcrossRestart verifies that the one-time
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// auto-vacuum conversion is committed to the database file and remains in
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// effect after reopening the store, rather than being re-run every restart.
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func TestStoreAutoVacuumPersistsAcrossRestart(t *testing.T) {
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dir := t.TempDir()
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cfg := DefaultConfig(dir)
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cfg.DBPath = filepath.Join(dir, "metrics-autovacuum.db")
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cfg.FlushInterval = time.Hour
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for i := 0; i < 2; i++ {
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store, err := NewStore(cfg)
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if err != nil {
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t.Fatalf("open %d: %v", i, err)
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}
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if err := store.WaitForMaintenance(10 * time.Second); err != nil {
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store.Close()
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t.Fatalf("maintenance %d: %v", i, err)
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}
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var mode int
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if err := store.db.QueryRow("PRAGMA auto_vacuum").Scan(&mode); err != nil {
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store.Close()
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t.Fatalf("pragma %d: %v", i, err)
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}
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if mode != 2 {
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store.Close()
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t.Fatalf("open %d: auto_vacuum = %d, want 2 (INCREMENTAL)", i, mode)
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}
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if err := store.Close(); err != nil {
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t.Fatalf("close %d: %v", i, err)
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}
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}
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}
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@ -1,7 +1,6 @@
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package metrics
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import (
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"database/sql"
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"fmt"
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"path/filepath"
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"testing"
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@ -795,180 +794,3 @@ func TestQueryAllBatch(t *testing.T) {
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}
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})
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}
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// TestStoreRollupTierBackfillsInterspersedGap verifies that a rollup checkpoint
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// does not leap over a gap between already-processed source windows. A late
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// backfill into that gap must still be aggregated on a later run instead of
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// being stranded below the checkpoint and eventually purged.
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func TestStoreRollupTierBackfillsInterspersedGap(t *testing.T) {
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dir := t.TempDir()
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cfg := DefaultConfig(dir)
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cfg.DBPath = filepath.Join(dir, "metrics-rollup-gap.db")
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cfg.FlushInterval = time.Hour
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store, err := NewStore(cfg)
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if err != nil {
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t.Fatalf("NewStore returned error: %v", err)
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}
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defer store.Close()
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base := time.Now().UTC().Add(-4 * time.Hour).Truncate(time.Hour)
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firstHour := base.Unix()
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thirdHour := base.Add(2 * time.Hour).Unix()
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gapHour := base.Add(time.Hour).Unix()
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if _, err := store.db.Exec(
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`INSERT INTO metrics (resource_type, resource_id, metric_type, value, min_value, max_value, timestamp, tier) VALUES
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('vm','vm-gap','cpu',1.0,1.0,1.0,?, 'minute'),
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('vm','vm-gap','cpu',3.0,3.0,3.0,?, 'minute')`, firstHour, thirdHour); err != nil {
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t.Fatalf("insert source rows: %v", err)
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}
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store.rollupTier(TierMinute, TierHourly, time.Hour, time.Hour)
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// Backfill the interspersed gap after the first rollup ran.
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if _, err := store.db.Exec(
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`INSERT INTO metrics (resource_type, resource_id, metric_type, value, min_value, max_value, timestamp, tier) VALUES
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('vm','vm-gap','cpu',2.0,2.0,2.0,?, 'minute')`, gapHour); err != nil {
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t.Fatalf("backfill gap row: %v", err)
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}
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store.rollupTier(TierMinute, TierHourly, time.Hour, time.Hour)
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var count int
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if err := store.db.QueryRow(
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`SELECT COUNT(*) FROM metrics WHERE tier='hourly' AND resource_id='vm-gap' AND timestamp=?`, gapHour).Scan(&count); err != nil {
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t.Fatalf("query hourly gap: %v", err)
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}
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if count != 1 {
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t.Fatalf("expected backfilled gap hour %d to roll up to hourly, got %d rows", gapHour, count)
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}
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}
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// TestStoreWriteBatchPreservesRollupSpread verifies that a direct write to an
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// aggregate tier does not erase an existing rollup row's min/max spread. The
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// write statement omits min/max, so excluded.* are NULL and a naive upsert
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// would null the stored spread.
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func TestStoreWriteBatchPreservesRollupSpread(t *testing.T) {
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dir := t.TempDir()
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cfg := DefaultConfig(dir)
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cfg.DBPath = filepath.Join(dir, "metrics-spread.db")
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cfg.FlushInterval = time.Hour
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store, err := NewStore(cfg)
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if err != nil {
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t.Fatalf("NewStore returned error: %v", err)
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}
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defer store.Close()
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ts := time.Now().UTC().Add(-2 * time.Hour).Truncate(time.Minute)
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if _, err := store.db.Exec(
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`INSERT INTO metrics (resource_type, resource_id, metric_type, value, min_value, max_value, timestamp, tier) VALUES
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('vm','vm-spread','cpu',5.0,1.0,9.0,?, 'minute')`, ts.Unix()); err != nil {
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t.Fatalf("insert rollup row: %v", err)
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}
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store.writeBatch([]bufferedMetric{
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{resourceType: "vm", resourceID: "vm-spread", metricType: "cpu", value: 7.0, timestamp: ts, tier: TierMinute},
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})
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var minValue, maxValue sql.NullFloat64
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if err := store.db.QueryRow(
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`SELECT min_value, max_value FROM metrics WHERE tier='minute' AND resource_id='vm-spread' AND timestamp=?`, ts.Unix()).Scan(&minValue, &maxValue); err != nil {
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t.Fatalf("query spread: %v", err)
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}
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if !minValue.Valid || !maxValue.Valid {
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t.Fatalf("direct write erased rollup spread: min=%+v max=%+v", minValue, maxValue)
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}
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if minValue.Float64 != 1.0 || maxValue.Float64 != 9.0 {
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t.Fatalf("unexpected spread after direct write: min=%v max=%v", minValue.Float64, maxValue.Float64)
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}
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}
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func TestIsRetryableWriteError(t *testing.T) {
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cases := []struct {
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name string
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err error
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want bool
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}{
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{"nil", nil, false},
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{"driver busy", fmt.Errorf("database is locked (5) (SQLITE_BUSY)"), true},
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{"legacy busy", fmt.Errorf("database is locked"), true},
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{"closed pool", fmt.Errorf("sql: database is closed"), true},
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{"unrelated", fmt.Errorf("no such table: metrics"), false},
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}
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for _, tc := range cases {
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if got := isRetryableWriteError(tc.err); got != tc.want {
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t.Fatalf("%s: isRetryableWriteError(%v) = %v, want %v", tc.name, tc.err, got, tc.want)
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}
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}
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}
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// TestIsRetryableWriteErrorMatchesDriverBusyCode proves the classifier matches
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// a real SQLITE_BUSY error returned by the modernc driver, not just its message.
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func TestIsRetryableWriteErrorMatchesDriverBusyCode(t *testing.T) {
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dir := t.TempDir()
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path := filepath.Join(dir, "busy.db")
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holder, err := sql.Open("sqlite", "file:"+path+"?_pragma=busy_timeout(0)")
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if err != nil {
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t.Fatalf("open holder: %v", err)
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}
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defer holder.Close()
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holder.SetMaxOpenConns(1)
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if _, err := holder.Exec("CREATE TABLE t (x INTEGER)"); err != nil {
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t.Fatalf("create table: %v", err)
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}
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if _, err := holder.Exec("BEGIN IMMEDIATE"); err != nil {
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t.Fatalf("begin immediate: %v", err)
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}
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defer holder.Exec("ROLLBACK")
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waiter, err := sql.Open("sqlite", "file:"+path+"?_pragma=busy_timeout(0)")
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if err != nil {
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t.Fatalf("open waiter: %v", err)
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}
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defer waiter.Close()
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_, err = waiter.Exec("BEGIN IMMEDIATE")
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if err == nil {
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waiter.Exec("ROLLBACK")
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t.Skip("driver did not report SQLITE_BUSY on a contended write lock")
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}
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if !isRetryableWriteError(err) {
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t.Fatalf("real driver busy error not classified retryable: %v", err)
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}
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}
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// TestStoreAutoVacuumPersistsAcrossRestart verifies that the one-time
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// auto-vacuum conversion is committed to the database file and remains in
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// effect after reopening the store, rather than being re-run every restart.
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func TestStoreAutoVacuumPersistsAcrossRestart(t *testing.T) {
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dir := t.TempDir()
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cfg := DefaultConfig(dir)
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cfg.DBPath = filepath.Join(dir, "metrics-autovacuum.db")
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cfg.FlushInterval = time.Hour
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for i := 0; i < 2; i++ {
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store, err := NewStore(cfg)
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if err != nil {
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t.Fatalf("open %d: %v", i, err)
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}
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if err := store.WaitForMaintenance(10 * time.Second); err != nil {
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store.Close()
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t.Fatalf("maintenance %d: %v", i, err)
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}
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var mode int
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if err := store.db.QueryRow("PRAGMA auto_vacuum").Scan(&mode); err != nil {
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store.Close()
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t.Fatalf("pragma %d: %v", i, err)
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}
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if mode != 2 {
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store.Close()
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t.Fatalf("open %d: auto_vacuum = %d, want 2 (INCREMENTAL)", i, mode)
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}
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if err := store.Close(); err != nil {
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t.Fatalf("close %d: %v", i, err)
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}
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}
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}
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