Exemplo n.º 1
0
// NewServer returns a new instance of Server built from a config.
func NewServer(c *Config, buildInfo *BuildInfo) (*Server, error) {
	// We need to ensure that a meta directory always exists even if
	// we don't start the meta store.  node.json is always stored under
	// the meta directory.
	if err := os.MkdirAll(c.Meta.Dir, 0777); err != nil {
		return nil, fmt.Errorf("mkdir all: %s", err)
	}

	// 0.10-rc1 and prior would sometimes put the node.json at the root
	// dir which breaks backup/restore and restarting nodes.  This moves
	// the file from the root so it's always under the meta dir.
	oldPath := filepath.Join(filepath.Dir(c.Meta.Dir), "node.json")
	newPath := filepath.Join(c.Meta.Dir, "node.json")

	if _, err := os.Stat(oldPath); err == nil {
		if err := os.Rename(oldPath, newPath); err != nil {
			return nil, err
		}
	}

	nodeAddr, err := meta.DefaultHost(DefaultHostname, c.Meta.HTTPBindAddress)
	if err != nil {
		return nil, err
	}

	// load the node information
	metaAddresses := []string{nodeAddr}
	if !c.Meta.Enabled {
		metaAddresses = c.Meta.JoinPeers
	}

	node, err := influxdb.LoadNode(c.Meta.Dir, metaAddresses)
	if err != nil {
		if !os.IsNotExist(err) {
			return nil, err
		} else {
			node = influxdb.NewNode(c.Meta.Dir, metaAddresses)
		}
	}

	// In 0.10.0 bind-address got moved to the top level. Check
	// The old location to keep things backwards compatible
	bind := c.BindAddress
	if c.Meta.BindAddress != "" {
		bind = c.Meta.BindAddress
	}

	if !c.Data.Enabled && !c.Meta.Enabled {
		return nil, fmt.Errorf("must run as either meta node or data node or both")
	}

	httpBindAddress, err := meta.DefaultHost(DefaultHostname, c.HTTPD.BindAddress)
	if err != nil {
		return nil, err
	}
	tcpBindAddress, err := meta.DefaultHost(DefaultHostname, bind)
	if err != nil {
		return nil, err
	}

	s := &Server{
		buildInfo: *buildInfo,
		err:       make(chan error),
		closing:   make(chan struct{}),

		BindAddress: bind,

		Node: node,

		Monitor: monitor.New(c.Monitor),

		reportingDisabled: c.ReportingDisabled,
		joinPeers:         c.Meta.JoinPeers,
		metaUseTLS:        c.Meta.HTTPSEnabled,

		httpAPIAddr: httpBindAddress,
		httpUseTLS:  c.HTTPD.HTTPSEnabled,
		tcpAddr:     tcpBindAddress,

		config: c,
	}

	if c.Meta.Enabled {
		s.MetaService = meta.NewService(c.Meta)
	}

	if c.Data.Enabled {
		s.TSDBStore = tsdb.NewStore(c.Data.Dir)
		s.TSDBStore.EngineOptions.Config = c.Data

		// Copy TSDB configuration.
		s.TSDBStore.EngineOptions.EngineVersion = c.Data.Engine
		s.TSDBStore.EngineOptions.MaxWALSize = c.Data.MaxWALSize
		s.TSDBStore.EngineOptions.WALFlushInterval = time.Duration(c.Data.WALFlushInterval)
		s.TSDBStore.EngineOptions.WALPartitionFlushDelay = time.Duration(c.Data.WALPartitionFlushDelay)

		// Set the shard mapper
		s.ShardMapper = cluster.NewShardMapper(time.Duration(c.Cluster.ShardMapperTimeout))
		s.ShardMapper.ForceRemoteMapping = c.Cluster.ForceRemoteShardMapping
		s.ShardMapper.TSDBStore = s.TSDBStore
		s.ShardMapper.Node = node

		// Initialize query executor.
		s.QueryExecutor = tsdb.NewQueryExecutor(s.TSDBStore)
		s.QueryExecutor.MonitorStatementExecutor = &monitor.StatementExecutor{Monitor: s.Monitor}
		s.QueryExecutor.ShardMapper = s.ShardMapper
		s.QueryExecutor.QueryLogEnabled = c.Data.QueryLogEnabled

		// Set the shard writer
		s.ShardWriter = cluster.NewShardWriter(time.Duration(c.Cluster.ShardWriterTimeout),
			c.Cluster.MaxRemoteWriteConnections)

		// Create the hinted handoff service
		s.HintedHandoff = hh.NewService(c.HintedHandoff, s.ShardWriter, s.MetaClient)
		s.HintedHandoff.Monitor = s.Monitor

		// Create the Subscriber service
		s.Subscriber = subscriber.NewService(c.Subscriber)

		// Initialize points writer.
		s.PointsWriter = cluster.NewPointsWriter()
		s.PointsWriter.WriteTimeout = time.Duration(c.Cluster.WriteTimeout)
		s.PointsWriter.TSDBStore = s.TSDBStore
		s.PointsWriter.ShardWriter = s.ShardWriter
		s.PointsWriter.HintedHandoff = s.HintedHandoff
		s.PointsWriter.Subscriber = s.Subscriber
		s.PointsWriter.Node = s.Node

		// needed for executing INTO queries.
		s.QueryExecutor.IntoWriter = s.PointsWriter

		// Initialize the monitor
		s.Monitor.Version = s.buildInfo.Version
		s.Monitor.Commit = s.buildInfo.Commit
		s.Monitor.Branch = s.buildInfo.Branch
		s.Monitor.BuildTime = s.buildInfo.Time
		s.Monitor.PointsWriter = s.PointsWriter
	}

	return s, nil
}
Exemplo n.º 2
0
func TestServer_BackupAndRestore(t *testing.T) {
	config := NewConfig()
	config.Data.Engine = "tsm1"
	config.Data.Dir, _ = ioutil.TempDir("", "data_backup")
	config.Meta.Dir, _ = ioutil.TempDir("", "meta_backup")
	config.Meta.BindAddress = freePort()
	config.Meta.HTTPBindAddress = freePort()

	backupDir, _ := ioutil.TempDir("", "backup")
	defer os.RemoveAll(backupDir)

	db := "mydb"
	rp := "forever"
	expected := `{"results":[{"series":[{"name":"myseries","columns":["time","host","value"],"values":[["1970-01-01T00:00:00.001Z","A",23]]}]}]}`

	// set the cache snapshot size low so that a single point will cause TSM file creation
	config.Data.CacheSnapshotMemorySize = 1

	func() {
		s := OpenServer(config, "")
		defer s.Close()

		if err := s.CreateDatabaseAndRetentionPolicy(db, newRetentionPolicyInfo(rp, 1, 0)); err != nil {
			t.Fatal(err)
		}
		if err := s.MetaClient.SetDefaultRetentionPolicy(db, rp); err != nil {
			t.Fatal(err)
		}

		s.MustWrite(db, rp, "myseries,host=A value=23 1000000", nil)

		// wait for the snapshot to write
		time.Sleep(time.Second)

		res, err := s.Query(`select * from "mydb"."forever"."myseries"`)
		if err != nil {
			t.Fatalf("error querying: %s", err.Error())
		}
		if res != expected {
			t.Fatalf("query results wrong:\n\texp: %s\n\tgot: %s", expected, res)
		}

		// now backup
		cmd := backup.NewCommand()
		hostAddress, _ := meta.DefaultHost(run.DefaultHostname, config.Meta.BindAddress)
		if err := cmd.Run("-host", hostAddress, "-database", "mydb", backupDir); err != nil {
			t.Fatalf("error backing up: %s", err.Error())
		}
	}()

	if _, err := os.Stat(config.Meta.Dir); err == nil || !os.IsNotExist(err) {
		t.Fatalf("meta dir should be deleted")
	}

	if _, err := os.Stat(config.Data.Dir); err == nil || !os.IsNotExist(err) {
		t.Fatalf("meta dir should be deleted")
	}

	// restore
	cmd := restore.NewCommand()
	cmd.MetaConfig.BindAddress = config.Meta.BindAddress

	if err := cmd.Run("-metadir", config.Meta.Dir, "-datadir", config.Data.Dir, "-database", "mydb", backupDir); err != nil {
		t.Fatalf("error restoring: %s", err.Error())
	}

	// Make sure node.json was restored
	nodePath := filepath.Join(config.Meta.Dir, "node.json")
	if _, err := os.Stat(nodePath); err != nil || os.IsNotExist(err) {
		t.Fatalf("node.json should exist")
	}

	// now open it up and verify we're good
	s := OpenServer(config, "")
	defer s.Close()

	res, err := s.Query(`select * from "mydb"."forever"."myseries"`)
	if err != nil {
		t.Fatalf("error querying: %s", err.Error())
	}
	if res != expected {
		t.Fatalf("query results wrong:\n\texp: %s\n\tgot: %s", expected, res)
	}
}