Golang cluster.NewShardWriter函數代碼示例

// Ensure the shard writer returns an error when the server fails to accept the write.
func TestShardWriter_WriteShard_Error(t *testing.T) {
	ts := newTestWriteService(writeShardFail)
	s := cluster.NewService(cluster.Config{})
	s.Listener = ts.muxln
	s.TSDBStore = ts
	if err := s.Open(); err != nil {
		t.Fatal(err)
	}
	defer s.Close()
	defer ts.Close()

	w := cluster.NewShardWriter(time.Minute)
	w.MetaStore = &metaStore{host: ts.ln.Addr().String()}
	now := time.Now()

	shardID := uint64(1)
	ownerID := uint64(2)
	var points []models.Point
	points = append(points, models.MustNewPoint(
		"cpu", models.Tags{"host": "server01"}, map[string]interface{}{"value": int64(100)}, now,
	))

	if err := w.WriteShard(shardID, ownerID, points); err == nil || err.Error() != "error code 1: write shard 1: failed to write" {
		t.Fatalf("unexpected error: %v", err)
	}
}

// Ensure the shard writer returns an error when dialing times out.
func TestShardWriter_Write_ErrDialTimeout(t *testing.T) {
	ts := newTestWriteService(writeShardSuccess)
	s := cluster.NewService(cluster.Config{})
	s.Listener = ts.muxln
	s.TSDBStore = ts
	if err := s.Open(); err != nil {
		t.Fatal(err)
	}
	defer s.Close()
	defer ts.Close()

	w := cluster.NewShardWriter(time.Nanosecond)
	w.MetaStore = &metaStore{host: ts.ln.Addr().String()}
	now := time.Now()

	shardID := uint64(1)
	ownerID := uint64(2)
	var points []models.Point
	points = append(points, models.MustNewPoint(
		"cpu", models.Tags{"host": "server01"}, map[string]interface{}{"value": int64(100)}, now,
	))

	if err, exp := w.WriteShard(shardID, ownerID, points), "i/o timeout"; err == nil || !strings.Contains(err.Error(), exp) {
		t.Fatalf("expected error %v, to contain %s", err, exp)
	}
}

// Ensure the shard writer returns an error when we can't get a connection.
func TestShardWriter_Write_PoolMax(t *testing.T) {
	ts := newTestWriteService(writeShardSlow)
	s := cluster.NewService(cluster.Config{
		ShardWriterTimeout: toml.Duration(100 * time.Millisecond),
	})
	s.Listener = ts.muxln
	s.TSDBStore = ts
	if err := s.Open(); err != nil {
		t.Fatal(err)
	}
	defer s.Close()
	defer ts.Close()

	w := cluster.NewShardWriter(100*time.Millisecond, 1)
	w.MetaClient = &metaClient{host: ts.ln.Addr().String()}
	now := time.Now()

	shardID := uint64(1)
	ownerID := uint64(2)
	var points []models.Point
	points = append(points, models.MustNewPoint(
		"cpu", models.Tags{"host": "server01"}, map[string]interface{}{"value": int64(100)}, now,
	))

	go w.WriteShard(shardID, ownerID, points)
	time.Sleep(time.Millisecond)
	if err := w.WriteShard(shardID, ownerID, points); err == nil || err.Error() != "timed out waiting for free connection" {
		t.Fatalf("unexpected error: %v", err)
	}
}

// NewServer returns a new instance of Server built from a config.
func NewServer(c *Config, version string) (*Server, error) {
	// Construct base meta store and data store.
	s := &Server{
		version: version,
		err:     make(chan error),
		closing: make(chan struct{}),

		Hostname:    c.Meta.Hostname,
		BindAddress: c.Meta.BindAddress,

		MetaStore: meta.NewStore(c.Meta),
		TSDBStore: tsdb.NewStore(c.Data.Dir),

		reportingDisabled: c.ReportingDisabled,
	}

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

	// Initialize query executor.
	s.QueryExecutor = tsdb.NewQueryExecutor(s.TSDBStore)
	s.QueryExecutor.MetaStore = s.MetaStore
	s.QueryExecutor.MetaStatementExecutor = &meta.StatementExecutor{Store: s.MetaStore}

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

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

	// Initialize points writer.
	s.PointsWriter = cluster.NewPointsWriter()
	s.PointsWriter.MetaStore = s.MetaStore
	s.PointsWriter.TSDBStore = s.TSDBStore
	s.PointsWriter.ShardWriter = s.ShardWriter
	s.PointsWriter.HintedHandoff = s.HintedHandoff

	// Append services.
	s.appendClusterService(c.Cluster)
	s.appendPrecreatorService(c.Precreator)
	s.appendSnapshotterService()
	s.appendAdminService(c.Admin)
	s.appendContinuousQueryService(c.ContinuousQuery)
	s.appendHTTPDService(c.HTTPD)
	s.appendCollectdService(c.Collectd)
	if err := s.appendOpenTSDBService(c.OpenTSDB); err != nil {
		return nil, err
	}
	s.appendUDPService(c.UDP)
	s.appendRetentionPolicyService(c.Retention)
	for _, g := range c.Graphites {
		if err := s.appendGraphiteService(g); err != nil {
			return nil, err
		}
	}

	return s, nil
}

// Ensure the shard writer can successful write a multiple requests.
func TestShardWriter_WriteShard_Multiple(t *testing.T) {
	ts := newTestWriteService(writeShardSuccess)
	s := cluster.NewService(cluster.Config{})
	s.Listener = ts.muxln
	s.TSDBStore = ts
	if err := s.Open(); err != nil {
		t.Fatal(err)
	}
	defer s.Close()
	defer ts.Close()

	w := cluster.NewShardWriter(time.Minute)
	w.MetaStore = &metaStore{host: ts.ln.Addr().String()}

	// Build a single point.
	now := time.Now()
	var points []models.Point
	points = append(points, models.MustNewPoint("cpu", models.Tags{"host": "server01"}, map[string]interface{}{"value": int64(100)}, now))

	// Write to shard twice and close.
	if err := w.WriteShard(1, 2, points); err != nil {
		t.Fatal(err)
	} else if err := w.WriteShard(1, 2, points); err != nil {
		t.Fatal(err)
	} else if err := w.Close(); err != nil {
		t.Fatal(err)
	}

	// Validate response.
	responses, err := ts.ResponseN(1)
	if err != nil {
		t.Fatal(err)
	} else if responses[0].shardID != 1 {
		t.Fatalf("unexpected shard id: %d", responses[0].shardID)
	}

	// Validate point.
	if p := responses[0].points[0]; p.Name() != "cpu" {
		t.Fatalf("unexpected name: %s", p.Name())
	} else if p.Fields()["value"] != int64(100) {
		t.Fatalf("unexpected 'value' field: %d", p.Fields()["value"])
	} else if p.Tags()["host"] != "server01" {
		t.Fatalf("unexpected 'host' tag: %s", p.Tags()["host"])
	} else if p.Time().UnixNano() != now.UnixNano() {
		t.Fatalf("unexpected time: %s", p.Time())
	}
}

// Ensure the shard writer returns an error when reading times out.
func TestShardWriter_Write_ErrReadTimeout(t *testing.T) {
	ln, err := net.Listen("tcp", "127.0.0.1:0")
	if err != nil {
		t.Fatal(err)
	}

	w := cluster.NewShardWriter(time.Millisecond)
	w.MetaStore = &metaStore{host: ln.Addr().String()}
	now := time.Now()

	shardID := uint64(1)
	ownerID := uint64(2)
	var points []models.Point
	points = append(points, models.MustNewPoint(
		"cpu", models.Tags{"host": "server01"}, map[string]interface{}{"value": int64(100)}, now,
	))

	if err := w.WriteShard(shardID, ownerID, points); err == nil || !strings.Contains(err.Error(), "i/o timeout") {
		t.Fatalf("unexpected error: %s", err)
	}
}

//.........這裏部分代碼省略.........
	// 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 := defaultHost(DefaultHostname, c.HTTPD.BindAddress)
	if err != nil {
		return nil, err
	}
	tcpBindAddress, err := 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
}

// NewServer returns a new instance of Server built from a config.
func NewServer(c *Config, buildInfo *BuildInfo) (*Server, error) {
	// Construct base meta store and data store.
	tsdbStore := tsdb.NewStore(c.Data.Dir)
	tsdbStore.EngineOptions.Config = c.Data

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

		Hostname:    c.Meta.Hostname,
		BindAddress: c.Meta.BindAddress,

		MetaStore: meta.NewStore(c.Meta),
		TSDBStore: tsdbStore,

		Monitor: monitor.New(c.Monitor),

		reportingDisabled: c.ReportingDisabled,
	}

	// 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.MetaStore = s.MetaStore
	s.ShardMapper.TSDBStore = s.TSDBStore

	// Initialize query executor.
	s.QueryExecutor = tsdb.NewQueryExecutor(s.TSDBStore)
	s.QueryExecutor.MetaStore = s.MetaStore
	s.QueryExecutor.MetaStatementExecutor = &meta.StatementExecutor{Store: s.MetaStore}
	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))
	s.ShardWriter.MetaStore = s.MetaStore

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

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

	// 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.MetaStore = s.MetaStore
	s.Monitor.PointsWriter = s.PointsWriter

	// Append services.
	s.appendClusterService(c.Cluster)
	s.appendPrecreatorService(c.Precreator)
	s.appendSnapshotterService()
	s.appendCopierService()
	s.appendAdminService(c.Admin)
	s.appendContinuousQueryService(c.ContinuousQuery)
	s.appendHTTPDService(c.HTTPD)
	s.appendCollectdService(c.Collectd)
	if err := s.appendOpenTSDBService(c.OpenTSDB); err != nil {
		return nil, err
	}
	for _, g := range c.UDPs {
		s.appendUDPService(g)
	}
	s.appendRetentionPolicyService(c.Retention)
	for _, g := range c.Graphites {
		if err := s.appendGraphiteService(g); err != nil {
			return nil, err
		}
	}

	return s, nil
}

// NewServer returns a new instance of Server built from a config.
func NewServer(c *Config, buildInfo *BuildInfo) (*Server, error) {
	// load the node information. Before 0.10 this was in the meta directory,
	// so use that if the top level directory isn't specified
	dir := c.Dir
	if dir == "" {
		dir = c.Meta.Dir
	}

	// load the node information
	node, err := influxdb.LoadNode(dir, c.Meta.HTTPBindAddress)
	if err != nil {
		if !os.IsNotExist(err) {
			return nil, err
		} else {
			node = influxdb.NewNode(dir, c.Meta.HTTPBindAddress)
		}
	}

	// 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 := defaultHost(DefaultHostname, c.HTTPD.BindAddress)
	if err != nil {
		return nil, err
	}
	tcpBindAddress, err := 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()
//.........這裏部分代碼省略.........