// BenchmarkFuzz is the benchmark version of TestFuzz. However, it will run
// several append and verify operations in parallel, if GOMAXPROC is set
// accordingly. Also, the storage options are set such that evictions,
// checkpoints, and purging will happen concurrently, too. This benchmark will
// have a very long runtime (up to minutes). You can use it as an actual
// benchmark. Run it like this:
//
// go test -cpu 1,2,4,8 -short -bench BenchmarkFuzz -benchmem
//
// You can also use it as a test for races. In that case, run it like this (will
// make things even slower):
//
// go test -race -cpu 8 -short -bench BenchmarkFuzz
func BenchmarkFuzz(b *testing.B) {
b.StopTimer()
rand.Seed(42)
directory := test.NewTemporaryDirectory("test_storage", b)
defer directory.Close()
o := &MemorySeriesStorageOptions{
MemoryChunks: 100,
PersistenceRetentionPeriod: time.Hour,
PersistenceStoragePath: directory.Path(),
CheckpointInterval: 3 * time.Second,
}
s, err := NewMemorySeriesStorage(o)
if err != nil {
b.Fatalf("Error creating storage: %s", err)
}
s.Start()
defer s.Stop()
b.StartTimer()
b.RunParallel(func(pb *testing.PB) {
var allSamples clientmodel.Samples
for pb.Next() {
newSamples := createRandomSamples()
allSamples = append(allSamples, newSamples[:len(newSamples)/2]...)
s.AppendSamples(newSamples[:len(newSamples)/2])
verifyStorage(b, s, allSamples, o.PersistenceRetentionPeriod)
allSamples = append(allSamples, newSamples[len(newSamples)/2:]...)
s.AppendSamples(newSamples[len(newSamples)/2:])
verifyStorage(b, s, allSamples, o.PersistenceRetentionPeriod)
}
})
}
// This is copied from storage/metric/helpers_test.go, which is unfortunate but
// presently required to make things work.
func NewTestTieredStorage(t test.Tester) (storage *tiered.TieredStorage, closer test.Closer) {
var directory test.TemporaryDirectory
directory = test.NewTemporaryDirectory("test_tiered_storage", t)
storage, err := tiered.NewTieredStorage(2500, 1000, 5*time.Second, 0*time.Second, directory.Path())
if err != nil {
if storage != nil {
storage.Close()
}
directory.Close()
t.Fatalf("Error creating storage: %s", err)
}
if storage == nil {
directory.Close()
t.Fatalf("storage == nil")
}
started := make(chan bool)
go storage.Serve(started)
<-started
closer = &testTieredStorageCloser{
storage: storage,
directory: directory,
}
return
}
func (p preparer) Prepare(n string, f FixtureFactory) (t test.TemporaryDirectory) {
t = test.NewTemporaryDirectory(n, p.tester)
persistence, err := leveldb.NewLevelDBPersistence(leveldb.LevelDBOptions{
Path: t.Path(),
CacheSizeBytes: cacheCapacity,
})
if err != nil {
defer t.Close()
p.tester.Fatal(err)
}
defer persistence.Close()
for f.HasNext() {
key, value := f.Next()
switch v := value.(type) {
case proto.Message:
err = persistence.Put(key, v)
case []byte:
err = persistence.PutRaw(key, v)
default:
panic("illegal value type")
}
if err != nil {
defer t.Close()
p.tester.Fatal(err)
}
}
return
}
// TestLoop is just a smoke test for the loop method, if we can switch it on and
// off without disaster.
func TestLoop(t *testing.T) {
samples := make(clientmodel.Samples, 1000)
for i := range samples {
samples[i] = &clientmodel.Sample{
Timestamp: clientmodel.Timestamp(2 * i),
Value: clientmodel.SampleValue(float64(i) * 0.2),
}
}
directory := test.NewTemporaryDirectory("test_storage", t)
defer directory.Close()
o := &MemorySeriesStorageOptions{
MemoryChunks: 50,
PersistenceRetentionPeriod: 24 * 7 * time.Hour,
PersistenceStoragePath: directory.Path(),
CheckpointInterval: 250 * time.Millisecond,
}
storage, err := NewMemorySeriesStorage(o)
if err != nil {
t.Fatalf("Error creating storage: %s", err)
}
storage.Start()
storage.AppendSamples(samples)
time.Sleep(time.Second)
storage.Stop()
}
func TestLocking(t *testing.T) {
dir := test.NewTemporaryDirectory("test_flock", t)
defer dir.Close()
fileName := filepath.Join(dir.Path(), "LOCK")
if _, err := os.Stat(fileName); err == nil {
t.Fatalf("File %q unexpectedly exists.", fileName)
}
lock, existed, err := New(fileName)
if err != nil {
t.Fatalf("Error locking file %q: %s", fileName, err)
}
if existed {
t.Errorf("File %q reported as existing during locking.", fileName)
}
// File must now exist.
if _, err := os.Stat(fileName); err != nil {
t.Errorf("Could not stat file %q expected to exist: %s", fileName, err)
}
// Try to lock again.
lockedAgain, existed, err := New(fileName)
if err == nil {
t.Fatalf("File %q locked twice.", fileName)
}
if lockedAgain != nil {
t.Error("Unsuccessful locking did not return nil.")
}
if !existed {
t.Errorf("Existing file %q not recognized.", fileName)
}
if err := lock.Release(); err != nil {
t.Errorf("Error releasing lock for file %q: %s", fileName, err)
}
// File must still exist.
if _, err := os.Stat(fileName); err != nil {
t.Errorf("Could not stat file %q expected to exist: %s", fileName, err)
}
// Lock existing file.
lock, existed, err = New(fileName)
if err != nil {
t.Fatalf("Error locking file %q: %s", fileName, err)
}
if !existed {
t.Errorf("Existing file %q not recognized.", fileName)
}
if err := lock.Release(); err != nil {
t.Errorf("Error releasing lock for file %q: %s", fileName, err)
}
}
func buildLevelDBTestPersistencesMaker(name string, t test.Tester) func() (MetricPersistence, test.Closer) {
return func() (MetricPersistence, test.Closer) {
temporaryDirectory := test.NewTemporaryDirectory("get_value_at_time", t)
p, err := NewLevelDBMetricPersistence(temporaryDirectory.Path())
if err != nil {
t.Errorf("Could not start up LevelDB: %q\n", err)
}
return p, temporaryDirectory
}
}
func testLevelDBStochastic(t test.Tester) {
persistenceMaker := func() (MetricPersistence, test.Closer) {
temporaryDirectory := test.NewTemporaryDirectory("test_leveldb_stochastic", t)
p, err := NewLevelDBMetricPersistence(temporaryDirectory.Path())
if err != nil {
t.Errorf("Could not start up LevelDB: %q\n", err)
}
return p, temporaryDirectory
}
StochasticTests(persistenceMaker, t)
}
func buildLevelDBTestPersistence(name string, f func(p MetricPersistence, t test.Tester)) func(t test.Tester) {
return func(t test.Tester) {
temporaryDirectory := test.NewTemporaryDirectory(fmt.Sprintf("test_leveldb_%s", name), t)
defer temporaryDirectory.Close()
p, err := NewLevelDBMetricPersistence(temporaryDirectory.Path())
if err != nil {
t.Errorf("Could not create LevelDB Metric Persistence: %q\n", err)
}
defer p.Close()
f(p, t)
}
}
func newTestTieredStorage(t test.Tester) (storage Storage, closer test.Closer) {
var directory test.TemporaryDirectory
directory = test.NewTemporaryDirectory("test_tiered_storage", t)
storage, err := NewTieredStorage(5000000, 2500, 1000, 5*time.Second, 15*time.Second, 0*time.Second, directory.Path())
if err != nil {
t.Fatalf("Error creating storage: %s", err)
}
if storage == nil {
t.Fatalf("storage == nil")
}
go storage.Serve()
closer = &testTieredStorageCloser{
storage: storage,
directory: directory,
}
return
}
func (p preparer) Prepare(n string, f FixtureFactory) (t test.TemporaryDirectory) {
t = test.NewTemporaryDirectory(n, p.tester)
persistence, err := leveldb.NewLevelDBPersistence(t.Path(), cacheCapacity, bitsPerBloomFilterEncoded)
if err != nil {
defer t.Close()
p.tester.Fatal(err)
}
defer persistence.Close()
for f.HasNext() {
key, value := f.Next()
err = persistence.Put(key, value)
if err != nil {
defer t.Close()
p.tester.Fatal(err)
}
}
return
}
// NewTestStorage creates a storage instance backed by files in a temporary
// directory. The returned storage is already in serving state. Upon closing the
// returned test.Closer, the temporary directory is cleaned up.
func NewTestStorage(t test.T) (Storage, test.Closer) {
directory := test.NewTemporaryDirectory("test_storage", t)
o := &MemorySeriesStorageOptions{
MemoryChunks: 1000000,
PersistenceRetentionPeriod: 24 * 7 * time.Hour,
PersistenceStoragePath: directory.Path(),
CheckpointInterval: time.Hour,
}
storage, err := NewMemorySeriesStorage(o)
if err != nil {
directory.Close()
t.Fatalf("Error creating storage: %s", err)
}
storage.Start()
closer := &testStorageCloser{
storage: storage,
directory: directory,
}
return storage, closer
}
func TestExpressions(t *testing.T) {
temporaryDirectory := test.NewTemporaryDirectory("rule_expression_tests", t)
defer temporaryDirectory.Close()
tieredStorage, err := metric.NewTieredStorage(5000, 5000, 100, time.Second*30, time.Second*1, time.Second*20, temporaryDirectory.Path())
if err != nil {
t.Fatalf("Error opening storage: %s", err)
}
go tieredStorage.Serve()
ast.SetStorage(tieredStorage)
storeMatrix(tieredStorage, testMatrix)
tieredStorage.Flush()
for i, exprTest := range expressionTests {
expectedLines := annotateWithTime(exprTest.output)
testExpr, err := LoadExprFromString(exprTest.expr)
if err != nil {
if exprTest.shouldFail {
continue
}
t.Errorf("%d Error during parsing: %v", i, err)
t.Errorf("%d Expression: %v", i, exprTest.expr)
} else {
if exprTest.shouldFail {
t.Errorf("%d Test should fail, but didn't", i)
}
failed := false
resultStr := ast.EvalToString(testExpr, testEvalTime, ast.TEXT)
resultLines := strings.Split(resultStr, "\n")
if len(exprTest.output) != len(resultLines) {
t.Errorf("%d Number of samples in expected and actual output don't match", i)
failed = true
}
if exprTest.checkOrder {
for j, expectedSample := range expectedLines {
if resultLines[j] != expectedSample {
t.Errorf("%d.%d Expected sample '%v', got '%v'", i, j, resultLines[j], expectedSample)
failed = true
}
}
} else {
for j, expectedSample := range expectedLines {
found := false
for _, actualSample := range resultLines {
if actualSample == expectedSample {
found = true
}
}
if !found {
t.Errorf("%d.%d Couldn't find expected sample in output: '%v'", i, j, expectedSample)
failed = true
}
}
}
analyzer := ast.NewQueryAnalyzer()
analyzer.AnalyzeQueries(testExpr)
if exprTest.fullRanges != len(analyzer.FullRanges) {
t.Errorf("%d Count of full ranges didn't match: %v vs %v", i, exprTest.fullRanges, len(analyzer.FullRanges))
failed = true
}
if exprTest.intervalRanges != len(analyzer.IntervalRanges) {
t.Errorf("%d Count of interval ranges didn't match: %v vs %v", i, exprTest.intervalRanges, len(analyzer.IntervalRanges))
failed = true
}
if failed {
t.Errorf("%d Expression: %v\n%v", i, exprTest.expr, vectorComparisonString(expectedLines, resultLines))
}
}
}
}