func newService(cfg *meta.Config) *testService {
// Open shared TCP connection.
ln, err := net.Listen("tcp", cfg.BindAddress)
if err != nil {
panic(err)
}
// Multiplex listener.
mux := tcp.NewMux()
s := meta.NewService(cfg)
s.RaftListener = mux.Listen(meta.MuxHeader)
go mux.Serve(ln)
return &testService{Service: s, ln: ln}
}
// unpackMeta reads the metadata from the backup directory and initializes a raft
// cluster and replaces the root metadata.
func (cmd *Command) unpackMeta() error {
// find the meta file
metaFiles, err := filepath.Glob(filepath.Join(cmd.backupFilesPath, backup.Metafile+".*"))
if err != nil {
return err
}
if len(metaFiles) == 0 {
return fmt.Errorf("no metastore backups in %s", cmd.backupFilesPath)
}
latest := metaFiles[len(metaFiles)-1]
fmt.Fprintf(cmd.Stdout, "Using metastore snapshot: %v\n", latest)
// Read the metastore backup
f, err := os.Open(latest)
if err != nil {
return err
}
var buf bytes.Buffer
if _, err := io.Copy(&buf, f); err != nil {
return fmt.Errorf("copy: %s", err)
}
b := buf.Bytes()
var i int
// Make sure the file is actually a meta store backup file
magic := btou64(b[:8])
if magic != snapshotter.BackupMagicHeader {
return fmt.Errorf("invalid metadata file")
}
i += 8
// Size of the meta store bytes
length := int(btou64(b[i : i+8]))
i += 8
metaBytes := b[i : i+length]
i += int(length)
// Size of the node.json bytes
length = int(btou64(b[i : i+8]))
i += 8
nodeBytes := b[i:]
// Unpack into metadata.
var data meta.Data
if err := data.UnmarshalBinary(metaBytes); err != nil {
return fmt.Errorf("unmarshal: %s", err)
}
// Copy meta config and remove peers so it starts in single mode.
c := cmd.MetaConfig
c.JoinPeers = nil
c.LoggingEnabled = false
// Create the meta dir
if os.MkdirAll(c.Dir, 0700); err != nil {
return err
}
// Write node.json back to meta dir
if err := ioutil.WriteFile(filepath.Join(c.Dir, "node.json"), nodeBytes, 0655); err != nil {
return err
}
// Initialize meta store.
store := meta.NewService(c)
store.RaftListener = newNopListener()
// Open the meta store.
if err := store.Open(); err != nil {
return fmt.Errorf("open store: %s", err)
}
defer store.Close()
// Wait for the store to be ready or error.
select {
case err := <-store.Err():
return err
default:
}
client := meta.NewClient([]string{store.HTTPAddr()}, false)
client.SetLogger(log.New(ioutil.Discard, "", 0))
if err := client.Open(); err != nil {
return err
}
defer client.Close()
// Force set the full metadata.
if err := client.SetData(&data); err != nil {
return fmt.Errorf("set data: %s", err)
}
return nil
}
// 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)
// Initialize query executor.
s.QueryExecutor = tsdb.NewQueryExecutor()
s.QueryExecutor.Store = s.TSDBStore
s.QueryExecutor.MonitorStatementExecutor = &monitor.StatementExecutor{Monitor: s.Monitor}
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
}