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run.go
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run.go
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package main
import (
"flag"
"fmt"
"io/ioutil"
"log"
"net"
"net/http"
"net/url"
"os"
"path/filepath"
"runtime"
"strconv"
"strings"
"time"
"github.com/influxdb/influxdb"
"github.com/influxdb/influxdb/admin"
"github.com/influxdb/influxdb/collectd"
"github.com/influxdb/influxdb/graphite"
"github.com/influxdb/influxdb/messaging"
"github.com/influxdb/influxdb/opentsdb"
"github.com/influxdb/influxdb/raft"
"github.com/influxdb/influxdb/udp"
)
type RunCommand struct {
// The logger passed to the ticker during execution.
logWriter *os.File
config *Config
hostname string
node *Node
}
func NewRunCommand() *RunCommand {
return &RunCommand{
node: &Node{},
}
}
type Node struct {
Broker *influxdb.Broker
DataNode *influxdb.Server
raftLog *raft.Log
hostname string
adminServer *admin.Server
clusterListener net.Listener // The cluster TCP listener
apiListener net.Listener // The API TCP listener
GraphiteServers []graphite.Server // The Graphite Servers
OpenTSDBServer *opentsdb.Server // The OpenTSDB Server
}
func (s *Node) ClusterAddr() net.Addr {
return s.clusterListener.Addr()
}
func (s *Node) ClusterURL() *url.URL {
// Find out which port the cluster started on
_, p, e := net.SplitHostPort(s.ClusterAddr().String())
if e != nil {
panic(e)
}
h := net.JoinHostPort(s.hostname, p)
return &url.URL{
Scheme: "http",
Host: h,
}
}
func (s *Node) Close() error {
if err := s.closeClusterListener(); err != nil {
return err
}
if err := s.closeAPIListener(); err != nil {
return err
}
if err := s.closeAdminServer(); err != nil {
return err
}
for _, g := range s.GraphiteServers {
if err := g.Close(); err != nil {
return err
}
}
if s.OpenTSDBServer != nil {
if err := s.OpenTSDBServer.Close(); err != nil {
return err
}
}
if s.DataNode != nil {
if err := s.DataNode.Close(); err != nil {
return err
}
}
if s.raftLog != nil {
if err := s.raftLog.Close(); err != nil {
return err
}
}
if s.Broker != nil {
if err := s.Broker.Close(); err != nil {
return err
}
}
return nil
}
func (s *Node) openAdminServer(port int) error {
// Start the admin interface on the default port
addr := net.JoinHostPort("", strconv.Itoa(port))
s.adminServer = admin.NewServer(addr)
return s.adminServer.ListenAndServe()
}
func (s *Node) closeAdminServer() error {
if s.adminServer != nil {
return s.adminServer.Close()
}
return nil
}
func (s *Node) openListener(desc, addr string, h http.Handler) (net.Listener, error) {
var err error
listener, err := net.Listen("tcp", addr)
if err != nil {
return nil, err
}
go func() {
err := http.Serve(listener, h)
// The listener was closed so exit
// See https://github.com/golang/go/issues/4373
if strings.Contains(err.Error(), "closed") {
return
}
if err != nil {
log.Fatalf("%s server failed to serve on %s: %s", desc, addr, err)
}
}()
return listener, nil
}
func (s *Node) openAPIListener(addr string, h http.Handler) error {
var err error
s.apiListener, err = s.openListener("API", addr, h)
if err != nil {
return err
}
return nil
}
func (s *Node) closeAPIListener() error {
var err error
if s.apiListener != nil {
err = s.apiListener.Close()
s.apiListener = nil
}
return err
}
func (s *Node) openClusterListener(addr string, h http.Handler) error {
var err error
s.clusterListener, err = s.openListener("Cluster", addr, h)
if err != nil {
return err
}
return nil
}
func (s *Node) closeClusterListener() error {
var err error
if s.clusterListener != nil {
err = s.clusterListener.Close()
s.clusterListener = nil
}
return err
}
func (cmd *RunCommand) ParseConfig(path string) error {
// Parse configuration file from disk.
if path != "" {
var err error
cmd.config, err = ParseConfigFile(path)
if err != nil {
return fmt.Errorf("error parsing configuration %s - %s\n", path, err)
}
log.Printf("using configuration at: %s\n", path)
} else {
var err error
cmd.config, err = NewTestConfig()
if err != nil {
return fmt.Errorf("error parsing default config: %s\n", err)
}
log.Println("no configuration provided, using default settings")
}
// Override config properties.
if cmd.hostname != "" {
cmd.config.Hostname = cmd.hostname
}
cmd.node.hostname = cmd.config.Hostname
return nil
}
func (cmd *RunCommand) Run(args ...string) error {
// Parse command flags.
fs := flag.NewFlagSet("", flag.ExitOnError)
var configPath, pidfile, hostname, join, cpuprofile, memprofile string
fs.StringVar(&configPath, "config", "", "")
fs.StringVar(&pidfile, "pidfile", "", "")
fs.StringVar(&hostname, "hostname", "", "")
fs.StringVar(&join, "join", "", "")
fs.StringVar(&cpuprofile, "cpuprofile", "", "")
fs.StringVar(&memprofile, "memprofile", "", "")
fs.Usage = printRunUsage
fs.Parse(args)
cmd.hostname = hostname
// Start profiling, if set.
startProfiling(cpuprofile, memprofile)
defer stopProfiling()
// Print sweet InfluxDB logo and write the process id to file.
fmt.Print(logo)
writePIDFile(pidfile)
// Set parallelism.
runtime.GOMAXPROCS(runtime.NumCPU())
log.Printf("GOMAXPROCS set to %d", runtime.GOMAXPROCS(0))
// Parse config
if err := cmd.ParseConfig(configPath); err != nil {
log.Fatal(err)
}
// Use the config JoinURLs by default
joinURLs := cmd.config.Initialization.JoinURLs
// If a -join flag was passed, these should override the config
if join != "" {
joinURLs = join
}
cmd.CheckConfig()
cmd.Open(cmd.config, joinURLs)
// Wait indefinitely.
<-(chan struct{})(nil)
return nil
}
// CheckConfig validates the configuration
func (cmd *RunCommand) CheckConfig() {
// Set any defaults that aren't set
// TODO: bring more defaults in here instead of letting helpers do it
// Normalize Graphite configs
for i, _ := range cmd.config.Graphites {
if cmd.config.Graphites[i].BindAddress == "" {
cmd.config.Graphites[i].BindAddress = cmd.config.BindAddress
}
if cmd.config.Graphites[i].Port == 0 {
cmd.config.Graphites[i].Port = graphite.DefaultGraphitePort
}
}
// Normalize openTSDB config
if cmd.config.OpenTSDB.Addr == "" {
cmd.config.OpenTSDB.Addr = cmd.config.BindAddress
}
if cmd.config.OpenTSDB.Port == 0 {
cmd.config.OpenTSDB.Port = opentsdb.DefaultPort
}
// Validate that we have a sane config
if !(cmd.config.Data.Enabled || cmd.config.Broker.Enabled) {
log.Fatal("Node must be configured as a broker node, data node, or as both. To generate a valid configuration file run `influxd config > influxdb.generated.conf`.")
}
if cmd.config.Broker.Enabled && cmd.config.Broker.Dir == "" {
log.Fatal("Broker.Dir must be specified. To generate a valid configuration file run `influxd config > influxdb.generated.conf`.")
}
if cmd.config.Data.Enabled && cmd.config.Data.Dir == "" {
log.Fatal("Data.Dir must be specified. To generate a valid configuration file run `influxd config > influxdb.generated.conf`.")
}
}
func (cmd *RunCommand) Open(config *Config, join string) *Node {
if config != nil {
cmd.config = config
}
log.Printf("influxdb started, version %s, commit %s", version, commit)
// Parse join urls from the --join flag.
joinURLs := parseURLs(join)
// Start the broker handler.
h := &Handler{Config: config}
if err := cmd.node.openClusterListener(cmd.config.ClusterAddr(), h); err != nil {
log.Fatalf("Cluster server failed to listen on %s. %s ", cmd.config.ClusterAddr(), err)
}
log.Printf("Cluster server listening on %s", cmd.node.ClusterAddr().String())
// Open broker & raft log, initialize or join as necessary.
if cmd.config.Broker.Enabled {
cmd.openBroker(joinURLs, h)
// If were running as a broker locally, always connect to it since it must
// be ready before we can start the data node.
joinURLs = []url.URL{*cmd.node.ClusterURL()}
}
var s *influxdb.Server
// Open server, initialize or join as necessary.
if cmd.config.Data.Enabled {
//FIXME: Need to also pass in dataURLs to bootstrap a data node
s = cmd.openServer(joinURLs)
cmd.node.DataNode = s
s.SetAuthenticationEnabled(cmd.config.Authentication.Enabled)
log.Printf("authentication enabled: %v\n", cmd.config.Authentication.Enabled)
// Enable retention policy enforcement if requested.
if cmd.config.Data.RetentionCheckEnabled {
interval := time.Duration(cmd.config.Data.RetentionCheckPeriod)
if err := s.StartRetentionPolicyEnforcement(interval); err != nil {
log.Fatalf("retention policy enforcement failed: %s", err.Error())
}
log.Printf("broker enforcing retention policies with check interval of %s", interval)
}
// Start shard group pre-create
interval := cmd.config.ShardGroupPreCreateCheckPeriod()
if err := s.StartShardGroupsPreCreate(interval); err != nil {
log.Fatalf("shard group pre-create failed: %s", err.Error())
}
log.Printf("shard group pre-create with check interval of %s", interval)
}
// Start the server handler. Attach to broker if listening on the same port.
if s != nil {
h.Server = s
if config.Snapshot.Enabled {
log.Printf("snapshot server listening on %s", cmd.config.ClusterAddr())
} else {
log.Printf("snapshot server disabled")
}
if cmd.config.Admin.Enabled {
if err := cmd.node.openAdminServer(cmd.config.Admin.Port); err != nil {
log.Fatalf("admin server failed to listen on :%d: %s", cmd.config.Admin.Port, err)
}
log.Printf("admin server listening on :%d", cmd.config.Admin.Port)
}
// Spin up the collectd server
if cmd.config.Collectd.Enabled {
c := cmd.config.Collectd
cs := collectd.NewServer(s, c.TypesDB)
cs.Database = c.Database
err := collectd.ListenAndServe(cs, c.ConnectionString(cmd.config.BindAddress))
if err != nil {
log.Printf("failed to start collectd Server: %v\n", err.Error())
}
}
// Start the server bound to a UDP listener
if cmd.config.UDP.Enabled {
log.Printf("Starting UDP listener on %s", cmd.config.APIAddrUDP())
u := udp.NewUDPServer(s)
if err := u.ListenAndServe(cmd.config.APIAddrUDP()); err != nil {
log.Printf("Failed to start UDP listener on %s: %s", cmd.config.APIAddrUDP(), err)
}
}
// Spin up any Graphite servers
for _, graphiteConfig := range cmd.config.Graphites {
if !graphiteConfig.Enabled {
continue
}
// Configure Graphite parsing.
parser := graphite.NewParser()
parser.Separator = graphiteConfig.NameSeparatorString()
parser.LastEnabled = graphiteConfig.LastEnabled()
if err := s.CreateDatabaseIfNotExists(graphiteConfig.DatabaseString()); err != nil {
log.Fatalf("failed to create database for %s Graphite server: %s", graphiteConfig.Protocol, err.Error())
}
// Spin up the server.
var g graphite.Server
g, err := graphite.NewServer(graphiteConfig.Protocol, parser, s, graphiteConfig.DatabaseString())
if err != nil {
log.Fatalf("failed to initialize %s Graphite server: %s", graphiteConfig.Protocol, err.Error())
}
err = g.ListenAndServe(graphiteConfig.ConnectionString())
if err != nil {
log.Fatalf("failed to start %s Graphite server: %s", graphiteConfig.Protocol, err.Error())
}
cmd.node.GraphiteServers = append(cmd.node.GraphiteServers, g)
}
// Spin up any OpenTSDB servers
if config.OpenTSDB.Enabled {
o := config.OpenTSDB
db := o.DatabaseString()
laddr := o.ListenAddress()
policy := o.RetentionPolicy
if err := s.CreateDatabaseIfNotExists(db); err != nil {
log.Fatalf("failed to create database for OpenTSDB server: %s", err.Error())
}
if policy != "" {
// Ensure retention policy exists.
rp := influxdb.NewRetentionPolicy(policy)
if err := s.CreateRetentionPolicyIfNotExists(db, rp); err != nil {
log.Fatalf("failed to create retention policy for OpenTSDB: %s", err.Error())
}
}
os := opentsdb.NewServer(s, policy, db)
log.Println("Starting OpenTSDB service on", laddr)
go os.ListenAndServe(laddr)
cmd.node.OpenTSDBServer = os
}
// Start up self-monitoring if enabled.
if cmd.config.Monitoring.Enabled {
database := monitoringDatabase
policy := monitoringRetentionPolicy
interval := time.Duration(cmd.config.Monitoring.WriteInterval)
// Ensure database exists.
if err := s.CreateDatabaseIfNotExists(database); err != nil {
log.Fatalf("failed to create database %s for internal monitoring: %s", database, err.Error())
}
// Ensure retention policy exists.
rp := influxdb.NewRetentionPolicy(policy)
if err := s.CreateRetentionPolicyIfNotExists(database, rp); err != nil {
log.Fatalf("failed to create retention policy for internal monitoring: %s", err.Error())
}
s.StartSelfMonitoring(database, policy, interval)
log.Printf("started self-monitoring at interval of %s", interval)
}
}
// unless disabled, start the loop to report anonymous usage stats every 24h
if !cmd.config.ReportingDisabled {
if cmd.config.Broker.Enabled && cmd.config.Data.Enabled {
// Make sure we have a config object b4 we try to use it.
if clusterID := cmd.node.Broker.Broker.ClusterID(); clusterID != 0 {
go s.StartReportingLoop(clusterID)
}
} else {
log.Fatalln("failed to start reporting because not running as a broker and a data node")
}
}
if cmd.node.Broker != nil {
// have it occasionally tell a data node in the cluster to run continuous queries
if cmd.config.ContinuousQuery.Disabled {
log.Printf("Not running continuous queries. [continuous_queries].disabled is set to true.")
} else {
cmd.node.Broker.RunContinuousQueryLoop()
}
}
if cmd.config.APIAddr() != cmd.config.ClusterAddr() {
err := cmd.node.openAPIListener(cmd.config.APIAddr(), h)
if err != nil {
log.Fatalf("API server failed to listen on %s. %s ", cmd.config.APIAddr(), err)
}
}
log.Printf("API server listening on %s", cmd.config.APIAddr())
return cmd.node
}
func (cmd *RunCommand) Close() {
cmd.node.Close()
}
// write the current process id to a file specified by path.
func writePIDFile(path string) {
if path == "" {
return
}
// Ensure the required directory structure exists.
err := os.MkdirAll(filepath.Dir(path), 0755)
if err != nil {
log.Fatal(err)
}
// Retrieve the PID and write it.
pid := strconv.Itoa(os.Getpid())
if err := ioutil.WriteFile(path, []byte(pid), 0644); err != nil {
log.Fatal(err)
}
}
// creates and initializes a broker.
func (cmd *RunCommand) openBroker(brokerURLs []url.URL, h *Handler) {
path := cmd.config.BrokerDir()
u := cmd.node.ClusterURL()
raftTracing := cmd.config.Logging.RaftTracing
// Create broker
b := influxdb.NewBroker()
b.TruncationInterval = time.Duration(cmd.config.Broker.TruncationInterval)
b.MaxTopicSize = cmd.config.Broker.MaxTopicSize
b.MaxSegmentSize = cmd.config.Broker.MaxSegmentSize
cmd.node.Broker = b
// Create raft log.
l := raft.NewLog()
l.SetURL(*u)
l.DebugEnabled = raftTracing
b.Log = l
cmd.node.raftLog = l
// Create Raft clock.
clk := raft.NewClock()
clk.ApplyInterval = time.Duration(cmd.config.Raft.ApplyInterval)
clk.ElectionTimeout = time.Duration(cmd.config.Raft.ElectionTimeout)
clk.HeartbeatInterval = time.Duration(cmd.config.Raft.HeartbeatInterval)
clk.ReconnectTimeout = time.Duration(cmd.config.Raft.ReconnectTimeout)
l.Clock = clk
// Open broker so it can feed last index data to the log.
if err := b.Open(path); err != nil {
log.Fatalf("failed to open broker at %s : %s", path, err)
}
log.Printf("broker opened at %s", path)
// Attach the broker as the finite state machine of the raft log.
l.FSM = &messaging.RaftFSM{Broker: b}
// Open raft log inside broker directory.
if err := l.Open(filepath.Join(path, "raft")); err != nil {
log.Fatalf("raft: %s", err)
}
// Attach broker and log to handler.
h.Broker = b
h.Log = l
// Checks to see if the raft index is 0. If it's 0, it might be the first
// node in the cluster and must initialize or join
index, _ := l.LastLogIndexTerm()
if index == 0 {
// If we have join URLs, then attemp to join the cluster
if len(brokerURLs) > 0 {
joinLog(l, brokerURLs)
return
}
if err := l.Initialize(); err != nil {
log.Fatalf("initialize raft log: %s", err)
}
u := b.Broker.URL()
log.Printf("initialized broker: %s\n", (&u).String())
} else {
log.Printf("broker already member of cluster. Using existing state and ignoring join URLs")
}
}
// joins a raft log to an existing cluster.
func joinLog(l *raft.Log, brokerURLs []url.URL) {
// Attempts to join each server until successful.
for _, u := range brokerURLs {
if err := l.Join(u); err == raft.ErrInitialized {
return
} else if err != nil {
log.Printf("join: failed to connect to raft cluster: %s: %s", (&u).String(), err)
} else {
log.Printf("join: connected raft log to %s", (&u).String())
return
}
}
log.Fatalf("join: failed to connect raft log to any specified server")
}
// creates and initializes a server.
func (cmd *RunCommand) openServer(joinURLs []url.URL) *influxdb.Server {
// Create messaging client to the brokers.
c := influxdb.NewMessagingClient(*cmd.node.ClusterURL())
c.SetURLs(joinURLs)
if err := c.Open(filepath.Join(cmd.config.Data.Dir, messagingClientFile)); err != nil {
log.Fatalf("messaging client error: %s", err)
}
// If no URLs exist on the client the return an error since we cannot reach a broker.
if len(c.URLs()) == 0 {
log.Fatal("messaging client has no broker URLs")
}
// Create and open the server.
s := influxdb.NewServer()
s.WriteTrace = cmd.config.Logging.WriteTracing
s.RetentionAutoCreate = cmd.config.Data.RetentionAutoCreate
s.RecomputePreviousN = cmd.config.ContinuousQuery.RecomputePreviousN
s.RecomputeNoOlderThan = time.Duration(cmd.config.ContinuousQuery.RecomputeNoOlderThan)
s.ComputeRunsPerInterval = cmd.config.ContinuousQuery.ComputeRunsPerInterval
s.ComputeNoMoreThan = time.Duration(cmd.config.ContinuousQuery.ComputeNoMoreThan)
s.Version = version
s.CommitHash = commit
// Open server with data directory and broker client.
if err := s.Open(cmd.config.Data.Dir, c); err != nil {
log.Fatalf("failed to open data node: %v", err.Error())
}
log.Printf("data node(%d) opened at %s", s.ID(), cmd.config.Data.Dir)
// Give brokers time to elect a leader if entire cluster is being restarted.
time.Sleep(1 * time.Second)
if s.ID() == 0 {
joinOrInitializeServer(s, *cmd.node.ClusterURL(), joinURLs)
} else {
log.Printf("data node already member of cluster. Using existing state and ignoring join URLs")
}
return s
}
// joinOrInitializeServer joins a new server to an existing cluster or initializes it as the first
// member of the cluster
func joinOrInitializeServer(s *influxdb.Server, u url.URL, joinURLs []url.URL) {
// Create data node on an existing data node.
for _, joinURL := range joinURLs {
if err := s.Join(&u, &joinURL); err == influxdb.ErrDataNodeNotFound {
// No data nodes could be found to join. We're the first.
if err := s.Initialize(u); err != nil {
log.Fatalf("server initialization error(1): %s", err)
}
log.Printf("initialized data node: %s\n", (&u).String())
return
} else if err != nil {
// does not return so that the next joinURL can be tried
log.Printf("join: failed to connect data node: %s: %s", (&u).String(), err)
} else {
log.Printf("join: connected data node to %s", u)
return
}
}
if len(joinURLs) == 0 {
if err := s.Initialize(u); err != nil {
log.Fatalf("server initialization error(2): %s", err)
}
log.Printf("initialized data node: %s\n", (&u).String())
return
}
log.Fatalf("join: failed to connect data node to any specified server")
}
// parses a comma-delimited list of URLs.
func parseURLs(s string) (a []url.URL) {
if s == "" {
return nil
}
for _, s := range strings.Split(s, ",") {
u, err := url.Parse(s)
if err != nil {
log.Fatalf("cannot parse urls: %s", err)
}
a = append(a, *u)
}
return
}
// returns true if the file exists.
func fileExists(path string) bool {
if _, err := os.Stat(path); os.IsNotExist(err) {
return false
}
return true
}
func printRunUsage() {
log.Printf(`usage: run [flags]
run starts the broker and data node server. If this is the first time running
the command then a new cluster will be initialized unless the -join argument
is used.
-config <path>
Set the path to the configuration file.
-hostname <name>
Override the hostname, the 'hostname' configuration
option will be overridden.
-join <url>
Joins the server to an existing cluster.
-pidfile <path>
Write process ID to a file.
`)
}