Exemplo n.º 1
0
// MustOpenEngine returns a new, open instance of Engine.
func MustOpenEngine() *Engine {
	e := NewEngine()
	if err := e.Open(); err != nil {
		panic(err)
	}
	if err := e.LoadMetadataIndex(nil, tsdb.NewDatabaseIndex("db")); err != nil {
		panic(err)
	}
	return e
}
Exemplo n.º 2
0
// MustOpenShard returns a temporary, opened shard.
func MustOpenShard(id uint64) *Shard {
	path, err := ioutil.TempDir("", "copier-")
	if err != nil {
		panic(err)
	}

	sh := &Shard{
		Shard: tsdb.NewShard(id,
			tsdb.NewDatabaseIndex("db"),
			filepath.Join(path, "data"),
			filepath.Join(path, "wal"),
			tsdb.NewEngineOptions(),
		),
		path: path,
	}
	if err := sh.Open(); err != nil {
		sh.Close()
		panic(err)
	}

	return sh
}
Exemplo n.º 3
0
// Ensure engine can load the metadata index after reopening.
func TestEngine_LoadMetadataIndex(t *testing.T) {
	e := MustOpenEngine()
	defer e.Close()

	if err := e.WritePointsString(`cpu,host=A value=1.1 1000000000`); err != nil {
		t.Fatalf("failed to write points: %s", err.Error())
	}

	// Ensure we can close and load index from the WAL
	if err := e.Reopen(); err != nil {
		t.Fatal(err)
	}

	// Load metadata index.
	index := tsdb.NewDatabaseIndex("db")
	if err := e.LoadMetadataIndex(nil, index); err != nil {
		t.Fatal(err)
	}

	// Verify index is correct.
	if m := index.Measurement("cpu"); m == nil {
		t.Fatal("measurement not found")
	} else if s := m.SeriesByID(1); s.Key != "cpu,host=A" || !reflect.DeepEqual(s.Tags, map[string]string{"host": "A"}) {
		t.Fatalf("unexpected series: %q / %#v", s.Key, s.Tags)
	}

	// write the snapshot, ensure we can close and load index from TSM
	if err := e.WriteSnapshot(); err != nil {
		t.Fatalf("error writing snapshot: %s", err.Error())
	}

	// Ensure we can close and load index from the WAL
	if err := e.Reopen(); err != nil {
		t.Fatal(err)
	}

	// Load metadata index.
	index = tsdb.NewDatabaseIndex("db")
	if err := e.LoadMetadataIndex(nil, index); err != nil {
		t.Fatal(err)
	}

	// Verify index is correct.
	if m := index.Measurement("cpu"); m == nil {
		t.Fatal("measurement not found")
	} else if s := m.SeriesByID(1); s.Key != "cpu,host=A" || !reflect.DeepEqual(s.Tags, map[string]string{"host": "A"}) {
		t.Fatalf("unexpected series: %q / %#v", s.Key, s.Tags)
	}

	// Write a new point and ensure we can close and load index from TSM and WAL
	if err := e.WritePoints([]models.Point{
		MustParsePointString("cpu,host=B value=1.2 2000000000"),
	}); err != nil {
		t.Fatalf("failed to write points: %s", err.Error())
	}

	// Ensure we can close and load index from the TSM & WAL
	if err := e.Reopen(); err != nil {
		t.Fatal(err)
	}

	// Load metadata index.
	index = tsdb.NewDatabaseIndex("db")
	if err := e.LoadMetadataIndex(nil, index); err != nil {
		t.Fatal(err)
	}

	// Verify index is correct.
	if m := index.Measurement("cpu"); m == nil {
		t.Fatal("measurement not found")
	} else if s := m.SeriesByID(1); s.Key != "cpu,host=A" || !reflect.DeepEqual(s.Tags, map[string]string{"host": "A"}) {
		t.Fatalf("unexpected series: %q / %#v", s.Key, s.Tags)
	} else if s := m.SeriesByID(2); s.Key != "cpu,host=B" || !reflect.DeepEqual(s.Tags, map[string]string{"host": "B"}) {
		t.Fatalf("unexpected series: %q / %#v", s.Key, s.Tags)
	}
}