Golang tsm1.NewValue函數代碼示例

func TestFileStore_Stats(t *testing.T) {
	dir := MustTempDir()
	defer os.RemoveAll(dir)

	// Create 3 TSM files...
	data := []keyValues{
		keyValues{"cpu", []tsm1.Value{tsm1.NewValue(0, 1.0)}},
		keyValues{"cpu", []tsm1.Value{tsm1.NewValue(1, 2.0)}},
		keyValues{"mem", []tsm1.Value{tsm1.NewValue(0, 1.0)}},
	}

	_, err := newFileDir(dir, data...)
	if err != nil {
		fatal(t, "creating test files", err)
	}

	fs := tsm1.NewFileStore(dir)
	if err := fs.Open(); err != nil {
		fatal(t, "opening file store", err)
	}
	defer fs.Close()

	stats := fs.Stats()
	if got, exp := len(stats), 3; got != exp {
		t.Fatalf("file count mismatch: got %v, exp %v", got, exp)
	}

}

func TestFileStore_SeekToDesc_End(t *testing.T) {
	fs := tsm1.NewFileStore("")

	// Setup 3 files
	data := []keyValues{
		keyValues{"cpu", []tsm1.Value{tsm1.NewValue(0, 1.0)}},
		keyValues{"cpu", []tsm1.Value{tsm1.NewValue(1, 2.0)}},
		keyValues{"cpu", []tsm1.Value{tsm1.NewValue(2, 3.0)}},
	}

	files, err := newFiles(data...)
	if err != nil {
		t.Fatalf("unexpected error creating files: %v", err)
	}

	fs.Add(files...)

	buf := make([]tsm1.FloatValue, 1000)
	c := fs.KeyCursor("cpu", 2, false)
	values, err := c.ReadFloatBlock(tsm1.NewTimeDecoder(), &tsm1.FloatDecoder{}, &buf)
	if err != nil {
		t.Fatalf("unexpected error reading values: %v", err)
	}

	exp := data[2]
	if got, exp := len(values), len(exp.values); got != exp {
		t.Fatalf("value length mismatch: got %v, exp %v", got, exp)
	}

	for i, v := range exp.values {
		if got, exp := values[i].Value(), v.Value(); got != exp {
			t.Fatalf("read value mismatch(%d): got %v, exp %d", i, got, exp)
		}
	}
}

func TestFileStore_Read(t *testing.T) {
	fs := tsm1.NewFileStore("")

	// Setup 3 files
	data := []keyValues{
		keyValues{"cpu", []tsm1.Value{tsm1.NewValue(0, 1.0)}},
		keyValues{"cpu", []tsm1.Value{tsm1.NewValue(1, 2.0)}},
		keyValues{"mem", []tsm1.Value{tsm1.NewValue(0, 1.0)}},
	}

	files, err := newFiles(data...)
	if err != nil {
		t.Fatalf("unexpected error creating files: %v", err)
	}

	fs.Add(files...)

	// Search for an entry that exists in the second file
	values, err := fs.Read("cpu", 1)
	if err != nil {
		t.Fatalf("unexpected error reading values: %v", err)
	}

	exp := data[1]
	if got, exp := len(values), len(exp.values); got != exp {
		t.Fatalf("value length mismatch: got %v, exp %v", got, exp)
	}

	for i, v := range exp.values {
		if got, exp := values[i].Value(), v.Value(); got != exp {
			t.Fatalf("read value mismatch(%d): got %v, exp %d", i, got, exp)
		}
	}
}

func TestFileStore_Delete(t *testing.T) {
	dir := MustTempDir()
	defer os.RemoveAll(dir)
	fs := tsm1.NewFileStore(dir)

	// Setup 3 files
	data := []keyValues{
		keyValues{"cpu,host=server2!~#!value", []tsm1.Value{tsm1.NewValue(0, 1.0)}},
		keyValues{"cpu,host=server1!~#!value", []tsm1.Value{tsm1.NewValue(1, 2.0)}},
		keyValues{"mem,host=server1!~#!value", []tsm1.Value{tsm1.NewValue(0, 1.0)}},
	}

	files, err := newFiles(dir, data...)
	if err != nil {
		t.Fatalf("unexpected error creating files: %v", err)
	}

	fs.Add(files...)

	keys := fs.Keys()
	if got, exp := len(keys), 3; got != exp {
		t.Fatalf("key length mismatch: got %v, exp %v", got, exp)
	}

	if err := fs.Delete([]string{"cpu,host=server2!~#!value"}); err != nil {
		fatal(t, "deleting", err)
	}

	keys = fs.Keys()
	if got, exp := len(keys), 2; got != exp {
		t.Fatalf("key length mismatch: got %v, exp %v", got, exp)
	}
}

func TestScrubValues(t *testing.T) {
	dummy := Converter{
		tracker: new(tracker),
	}

	epoch := time.Unix(0, 0)
	simple := []tsm1.Value{tsm1.NewValue(epoch, 1.0)}

	for _, tt := range []struct {
		input, expected []tsm1.Value
	}{
		{
			input:    simple,
			expected: simple,
		}, {
			input:    []tsm1.Value{simple[0], tsm1.NewValue(epoch, math.NaN())},
			expected: simple,
		}, {
			input:    []tsm1.Value{simple[0], tsm1.NewValue(epoch, math.Inf(-1))},
			expected: simple,
		}, {
			input:    []tsm1.Value{simple[0], tsm1.NewValue(epoch, math.Inf(1)), tsm1.NewValue(epoch, math.NaN())},
			expected: simple,
		},
	} {
		out := dummy.scrubValues(tt.input)
		if !reflect.DeepEqual(out, tt.expected) {
			t.Errorf("Failed to scrub '%s': Got '%s', Expected '%s'", pretty(tt.input), pretty(out), pretty(tt.expected))
		}
	}
}

func TestFileStore_SeekToDesc_FromStart(t *testing.T) {
	fs := tsm1.NewFileStore("")

	// Setup 3 files
	data := []keyValues{
		keyValues{"cpu", []tsm1.Value{tsm1.NewValue(0, 1.0)}},
		keyValues{"cpu", []tsm1.Value{tsm1.NewValue(1, 2.0)}},
		keyValues{"cpu", []tsm1.Value{tsm1.NewValue(2, 3.0)}},
	}

	files, err := newFiles(data...)
	if err != nil {
		t.Fatalf("unexpected error creating files: %v", err)
	}

	fs.Add(files...)

	// Search for an entry that exists in the second file
	buf := make(tsm1.FloatValues, 1000)
	c := fs.KeyCursor("cpu", 0, false)
	values, err := c.ReadFloatBlock(buf)
	if err != nil {
		t.Fatalf("unexpected error reading values: %v", err)
	}
	exp := data[0]
	if got, exp := len(values), len(exp.values); got != exp {
		t.Fatalf("value length mismatch: got %v, exp %v", got, exp)
	}

	for i, v := range exp.values {
		if got, exp := values[i].Value(), v.Value(); got != exp {
			t.Fatalf("read value mismatch(%d): got %v, exp %d", i, got, exp)
		}
	}
}

func TestWriteWALSegment_UnmarshalBinary_WriteWALCorrupt(t *testing.T) {
	p1 := tsm1.NewValue(1, 1.1)
	p2 := tsm1.NewValue(1, int64(1))
	p3 := tsm1.NewValue(1, true)
	p4 := tsm1.NewValue(1, "string")

	values := map[string][]tsm1.Value{
		"cpu,host=A#!~#float":  []tsm1.Value{p1, p1},
		"cpu,host=A#!~#int":    []tsm1.Value{p2, p2},
		"cpu,host=A#!~#bool":   []tsm1.Value{p3, p3},
		"cpu,host=A#!~#string": []tsm1.Value{p4, p4},
	}

	w := &tsm1.WriteWALEntry{
		Values: values,
	}

	b, err := w.MarshalBinary()
	if err != nil {
		t.Fatalf("unexpected error, got %v", err)
	}

	// Test every possible truncation of a write WAL entry
	for i := 0; i < len(b); i++ {
		// re-allocated to ensure capacity would be exceed if slicing
		truncated := make([]byte, i)
		copy(truncated, b[:i])
		err := w.UnmarshalBinary(truncated)
		if err != nil && err != tsm1.ErrWALCorrupt {
			t.Fatalf("unexpected error: %v", err)
		}
	}
}

func TestFileStore_Open(t *testing.T) {
	dir := MustTempDir()
	defer os.RemoveAll(dir)

	// Create 3 TSM files...
	data := []keyValues{
		keyValues{"cpu", []tsm1.Value{tsm1.NewValue(time.Unix(0, 0), 1.0)}},
		keyValues{"cpu", []tsm1.Value{tsm1.NewValue(time.Unix(1, 0), 2.0)}},
		keyValues{"mem", []tsm1.Value{tsm1.NewValue(time.Unix(0, 0), 1.0)}},
	}

	_, err := newFileDir(dir, data...)
	if err != nil {
		fatal(t, "creating test files", err)
	}

	fs := tsm1.NewFileStore(dir)
	if err := fs.Open(); err != nil {
		fatal(t, "opening file store", err)
	}
	defer fs.Close()

	if got, exp := fs.Count(), 3; got != exp {
		t.Fatalf("file count mismatch: got %v, exp %v", got, exp)
	}

	if got, exp := fs.CurrentGeneration(), 4; got != exp {
		t.Fatalf("current ID mismatch: got %v, exp %v", got, exp)
	}
}

func TestTSMWriter_Write_Multiple(t *testing.T) {
	dir := MustTempDir()
	defer os.RemoveAll(dir)
	f := MustTempFile(dir)

	w, err := tsm1.NewTSMWriter(f)
	if err != nil {
		t.Fatalf("unexpected error creating writer: %v", err)
	}

	var data = []struct {
		key    string
		values []tsm1.Value
	}{
		{"cpu", []tsm1.Value{tsm1.NewValue(0, 1.0)}},
		{"mem", []tsm1.Value{tsm1.NewValue(1, 2.0)}},
	}

	for _, d := range data {
		if err := w.Write(d.key, d.values); err != nil {
			t.Fatalf("unexpected error writing: %v", err)
		}
	}

	if err := w.WriteIndex(); err != nil {
		t.Fatalf("unexpected error closing: %v", err)
	}

	if err := w.Close(); err != nil {
		t.Fatalf("unexpected error closing: %v", err)
	}

	fd, err := os.Open(f.Name())
	if err != nil {
		t.Fatalf("unexpected error open file: %v", err)
	}

	r, err := tsm1.NewTSMReader(fd)
	if err != nil {
		t.Fatalf("unexpected error created reader: %v", err)
	}
	defer r.Close()

	for _, d := range data {
		readValues, err := r.ReadAll(d.key)
		if err != nil {
			t.Fatalf("unexpected error readin: %v", err)
		}

		if exp := len(d.values); exp != len(readValues) {
			t.Fatalf("read values length mismatch: got %v, exp %v", len(readValues), exp)
		}

		for i, v := range d.values {
			if v.Value() != readValues[i].Value() {
				t.Fatalf("read value mismatch(%d): got %v, exp %d", i, readValues[i].Value(), v.Value())
			}
		}
	}
}

func TestFileStore_SeekToDesc_Duplicate(t *testing.T) {
	dir := MustTempDir()
	defer os.RemoveAll(dir)
	fs := tsm1.NewFileStore(dir)

	// Setup 3 files
	data := []keyValues{
		keyValues{"cpu", []tsm1.Value{tsm1.NewValue(0, 4.0)}},
		keyValues{"cpu", []tsm1.Value{tsm1.NewValue(0, 1.0)}},
		keyValues{"cpu", []tsm1.Value{tsm1.NewValue(2, 2.0)}},
		keyValues{"cpu", []tsm1.Value{tsm1.NewValue(2, 3.0)}},
	}

	files, err := newFiles(dir, data...)
	if err != nil {
		t.Fatalf("unexpected error creating files: %v", err)
	}

	fs.Add(files...)

	// Search for an entry that exists in the second file
	buf := make([]tsm1.FloatValue, 1000)
	c := fs.KeyCursor("cpu", 2, false)
	values, err := c.ReadFloatBlock(&tsm1.TimeDecoder{}, &tsm1.FloatDecoder{}, &buf)
	if err != nil {
		t.Fatalf("unexpected error reading values: %v", err)
	}
	exp := []tsm1.Value{
		data[3].values[0],
	}
	if got, exp := len(values), len(exp); got != exp {
		t.Fatalf("value length mismatch: got %v, exp %v", got, exp)
	}

	for i, v := range exp {
		if got, exp := values[i].Value(), v.Value(); got != exp {
			t.Fatalf("read value mismatch(%d): got %v, exp %v", i, got, exp)
		}
	}

	c.Next()
	values, err = c.ReadFloatBlock(&tsm1.TimeDecoder{}, &tsm1.FloatDecoder{}, &buf)
	if err != nil {
		t.Fatalf("unexpected error reading values: %v", err)
	}
	exp = []tsm1.Value{
		data[1].values[0],
	}
	if got, exp := len(values), len(exp); got != exp {
		t.Fatalf("value length mismatch: got %v, exp %v", got, exp)
	}

	for i, v := range exp {
		if got, exp := values[i].Value(), v.Value(); got != exp {
			t.Fatalf("read value mismatch(%d): got %v, exp %v", i, got, exp)
		}
	}

}

func TestTSMReader_MMAP_TombstoneMultipleRanges(t *testing.T) {
	dir := MustTempDir()
	defer os.RemoveAll(dir)
	f := MustTempFile(dir)
	defer f.Close()

	w, err := tsm1.NewTSMWriter(f)
	if err != nil {
		t.Fatalf("unexpected error creating writer: %v", err)
	}

	expValues := []tsm1.Value{
		tsm1.NewValue(1, 1.0),
		tsm1.NewValue(2, 2.0),
		tsm1.NewValue(3, 3.0),
		tsm1.NewValue(4, 4.0),
		tsm1.NewValue(5, 5.0),
	}
	if err := w.Write("cpu", expValues); err != nil {
		t.Fatalf("unexpected error writing: %v", err)
	}

	if err := w.WriteIndex(); err != nil {
		t.Fatalf("unexpected error writing index: %v", err)
	}

	if err := w.Close(); err != nil {
		t.Fatalf("unexpected error closing: %v", err)
	}

	f, err = os.Open(f.Name())
	if err != nil {
		t.Fatalf("unexpected error open file: %v", err)
	}

	r, err := tsm1.NewTSMReader(f)
	if err != nil {
		t.Fatalf("unexpected error created reader: %v", err)
	}
	defer r.Close()

	if err := r.DeleteRange([]string{"cpu"}, 2, 2); err != nil {
		t.Fatalf("unexpected error deleting: %v", err)
	}

	if err := r.DeleteRange([]string{"cpu"}, 4, 4); err != nil {
		t.Fatalf("unexpected error deleting: %v", err)
	}

	values, err := r.ReadAll("cpu")
	if err != nil {
		t.Fatalf("unexpected error reading all: %v", err)
	}

	if got, exp := len(values), 3; got != exp {
		t.Fatalf("values length mismatch: got %v, exp %v", got, exp)
	}
}

func TestWALWriter_WritePoints_Single(t *testing.T) {
	dir := MustTempDir()
	defer os.RemoveAll(dir)
	f := MustTempFile(dir)
	w := tsm1.NewWALSegmentWriter(f)

	p1 := tsm1.NewValue(time.Unix(1, 0), 1.1)
	p2 := tsm1.NewValue(time.Unix(1, 0), int64(1))
	p3 := tsm1.NewValue(time.Unix(1, 0), true)
	p4 := tsm1.NewValue(time.Unix(1, 0), "string")

	values := map[string][]tsm1.Value{
		"cpu,host=A#!~#float":  []tsm1.Value{p1},
		"cpu,host=A#!~#int":    []tsm1.Value{p2},
		"cpu,host=A#!~#bool":   []tsm1.Value{p3},
		"cpu,host=A#!~#string": []tsm1.Value{p4},
	}

	entry := &tsm1.WriteWALEntry{
		Values: values,
	}

	if err := w.Write(mustMarshalEntry(entry)); err != nil {
		fatal(t, "write points", err)
	}

	if _, err := f.Seek(0, os.SEEK_SET); err != nil {
		fatal(t, "seek", err)
	}

	r := tsm1.NewWALSegmentReader(f)

	if !r.Next() {
		t.Fatalf("expected next, got false")
	}

	we, err := r.Read()
	if err != nil {
		fatal(t, "read entry", err)
	}

	e, ok := we.(*tsm1.WriteWALEntry)
	if !ok {
		t.Fatalf("expected WriteWALEntry: got %#v", e)
	}

	for k, v := range e.Values {
		for i, vv := range v {
			if got, exp := vv.String(), values[k][i].String(); got != exp {
				t.Fatalf("points mismatch: got %v, exp %v", got, exp)
			}
		}
	}

	if n := r.Count(); n != MustReadFileSize(f) {
		t.Fatalf("wrong count of bytes read, got %d, exp %d", n, MustReadFileSize(f))
	}
}

// Tests that a single TSM file can be read and iterated over
func TestTSMKeyIterator_Chunked(t *testing.T) {
	dir := MustTempDir()
	defer os.RemoveAll(dir)

	v0 := tsm1.NewValue(1, 1.1)
	writes := map[string][]tsm1.Value{
		"cpu,host=A#!~#value": []tsm1.Value{v0},
	}

	r1 := MustTSMReader(dir, 1, writes)

	v1 := tsm1.NewValue(2, 2.1)
	writes1 := map[string][]tsm1.Value{
		"cpu,host=A#!~#value": []tsm1.Value{v1},
	}

	r2 := MustTSMReader(dir, 2, writes1)

	iter, err := tsm1.NewTSMKeyIterator(2, false, r1, r2)
	if err != nil {
		t.Fatalf("unexpected error creating WALKeyIterator: %v", err)
	}

	var readValues bool
	var chunk int
	for iter.Next() {
		key, _, _, block, err := iter.Read()
		if err != nil {
			t.Fatalf("unexpected error read: %v", err)
		}

		values, err := tsm1.DecodeBlock(block, nil)
		if err != nil {
			t.Fatalf("unexpected error decode: %v", err)
		}

		if got, exp := key, "cpu,host=A#!~#value"; got != exp {
			t.Fatalf("key mismatch: got %v, exp %v", got, exp)
		}

		if got, exp := len(values), 2; got != exp {
			t.Fatalf("values length mismatch: got %v, exp %v", got, exp)
		}

		readValues = len(values) > 0
		assertValueEqual(t, values[0], v0)
		assertValueEqual(t, values[1], v1)

		chunk++
	}

	if got, exp := chunk, 1; got != exp {
		t.Fatalf("chunk count mismatch: got %v, exp %v", got, exp)
	}
	if !readValues {
		t.Fatalf("failed to read any values")
	}
}

// Tests that writing keys in reverse is able to read them back.
func TestTSMWriter_Write_SameKey(t *testing.T) {
	var b bytes.Buffer
	w, err := tsm1.NewTSMWriter(&b)
	if err != nil {
		t.Fatalf("unexpected error creating writer: %v", err)
	}

	var data = []struct {
		key    string
		values []tsm1.Value
	}{
		{"cpu", []tsm1.Value{
			tsm1.NewValue(0, 1.0),
			tsm1.NewValue(1, 2.0)},
		},
		{"cpu", []tsm1.Value{
			tsm1.NewValue(2, 3.0),
			tsm1.NewValue(3, 4.0)},
		},
	}

	for _, d := range data {
		if err := w.Write(d.key, d.values); err != nil {
			t.Fatalf("unexpected error writing: %v", err)
		}
	}

	if err := w.WriteIndex(); err != nil {
		t.Fatalf("unexpected error closing: %v", err)
	}

	if err := w.Close(); err != nil {
		t.Fatalf("unexpected error closing: %v", err)
	}

	r, err := tsm1.NewTSMReader(bytes.NewReader(b.Bytes()))
	if err != nil {
		t.Fatalf("unexpected error created reader: %v", err)
	}

	values := append(data[0].values, data[1].values...)

	readValues, err := r.ReadAll("cpu")
	if err != nil {
		t.Fatalf("unexpected error readin: %v", err)
	}

	if exp := len(values); exp != len(readValues) {
		t.Fatalf("read values length mismatch: got %v, exp %v", len(readValues), exp)
	}

	for i, v := range values {
		if v.Value() != readValues[i].Value() {
			t.Fatalf("read value mismatch(%d): got %v, exp %d", i, readValues[i].Value(), v.Value())
		}
	}
}

func TestFileStore_SeekToAsc_Duplicate(t *testing.T) {
	fs := tsm1.NewFileStore("")

	// Setup 3 files
	data := []keyValues{
		keyValues{"cpu", []tsm1.Value{tsm1.NewValue(time.Unix(0, 0), 1.0)}},
		keyValues{"cpu", []tsm1.Value{tsm1.NewValue(time.Unix(0, 0), 2.0)}},
		keyValues{"cpu", []tsm1.Value{tsm1.NewValue(time.Unix(2, 0), 3.0)}},
		keyValues{"cpu", []tsm1.Value{tsm1.NewValue(time.Unix(2, 0), 4.0)}},
	}

	files, err := newFiles(data...)
	if err != nil {
		t.Fatalf("unexpected error creating files: %v", err)
	}

	fs.Add(files...)

	buf := make(tsm1.FloatValues, 1000)
	c := fs.KeyCursor("cpu", time.Unix(0, 0), true)
	// Search for an entry that exists in the second file
	values, err := c.ReadFloatBlock(buf)
	if err != nil {
		t.Fatalf("unexpected error reading values: %v", err)
	}

	exp := data[1]
	if got, exp := len(values), len(exp.values); got != exp {
		t.Fatalf("value length mismatch: got %v, exp %v", got, exp)
	}

	for i, v := range exp.values {
		if got, exp := values[i].Value(), v.Value(); got != exp {
			t.Fatalf("read value mismatch(%d): got %v, exp %v", i, got, exp)
		}
	}

	// Check that calling Next will dedupe points
	c.Next()
	values, err = c.ReadFloatBlock(buf)
	if err != nil {
		t.Fatalf("unexpected error reading values: %v", err)
	}
	exp = data[3]
	if got, exp := len(values), len(exp.values); got != exp {
		t.Fatalf("value length mismatch: got %v, exp %v", got, exp)
	}

	for i, v := range exp.values {
		if got, exp := values[i].Value(), v.Value(); got != exp {
			t.Fatalf("read value mismatch(%d): got %v, exp %v", i, got, exp)
		}
	}
}