mirror of https://github.com/tidwall/tile38.git
578 lines
14 KiB
Go
578 lines
14 KiB
Go
package controller
|
|
|
|
import (
|
|
"bytes"
|
|
"crypto/rand"
|
|
"errors"
|
|
"fmt"
|
|
"io"
|
|
"net"
|
|
"os"
|
|
"path"
|
|
"runtime"
|
|
"strings"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/tidwall/btree"
|
|
"github.com/tidwall/buntdb"
|
|
"github.com/tidwall/resp"
|
|
"github.com/tidwall/tile38/controller/collection"
|
|
"github.com/tidwall/tile38/controller/endpoint"
|
|
"github.com/tidwall/tile38/controller/log"
|
|
"github.com/tidwall/tile38/controller/server"
|
|
"github.com/tidwall/tile38/core"
|
|
"github.com/tidwall/tile38/geojson"
|
|
)
|
|
|
|
var errOOM = errors.New("OOM command not allowed when used memory > 'maxmemory'")
|
|
|
|
const hookLogPrefix = "hook:log:"
|
|
|
|
type collectionT struct {
|
|
Key string
|
|
Collection *collection.Collection
|
|
}
|
|
|
|
type commandDetailsT struct {
|
|
command string
|
|
key, id string
|
|
field string
|
|
value float64
|
|
obj geojson.Object
|
|
fields []float64
|
|
fmap map[string]int
|
|
oldObj geojson.Object
|
|
oldFields []float64
|
|
updated bool
|
|
timestamp time.Time
|
|
}
|
|
|
|
func (col *collectionT) Less(item btree.Item, ctx interface{}) bool {
|
|
return col.Key < item.(*collectionT).Key
|
|
}
|
|
|
|
// Controller is a tile38 controller
|
|
type Controller struct {
|
|
mu sync.RWMutex
|
|
host string
|
|
port int
|
|
f *os.File
|
|
qdb *buntdb.DB // hook queue log
|
|
qidx uint64 // hook queue log last idx
|
|
cols *btree.BTree
|
|
aofsz int
|
|
dir string
|
|
config Config
|
|
followc uint64 // counter increases when follow property changes
|
|
follows map[*bytes.Buffer]bool
|
|
fcond *sync.Cond
|
|
lstack []*commandDetailsT
|
|
lives map[*liveBuffer]bool
|
|
lcond *sync.Cond
|
|
fcup bool // follow caught up
|
|
shrinking bool // aof shrinking flag
|
|
shrinklog [][]string // aof shrinking log
|
|
hooks map[string]*Hook // hook name
|
|
hookcols map[string]map[string]*Hook // col key
|
|
aofconnM map[net.Conn]bool
|
|
expires map[string]map[string]time.Time
|
|
conns map[*server.Conn]bool
|
|
started time.Time
|
|
|
|
epc *endpoint.EndpointManager
|
|
|
|
statsTotalConns int
|
|
statsTotalCommands int
|
|
statsExpired int
|
|
|
|
lastShrinkDuration time.Duration
|
|
currentShrinkStart time.Time
|
|
|
|
stopBackgroundExpiring bool
|
|
stopWatchingMemory bool
|
|
outOfMemory bool
|
|
}
|
|
|
|
// ListenAndServe starts a new tile38 server
|
|
func ListenAndServe(host string, port int, dir string) error {
|
|
return ListenAndServeEx(host, port, dir, nil)
|
|
}
|
|
func ListenAndServeEx(host string, port int, dir string, ln *net.Listener) error {
|
|
log.Infof("Server started, Tile38 version %s, git %s", core.Version, core.GitSHA)
|
|
c := &Controller{
|
|
host: host,
|
|
port: port,
|
|
dir: dir,
|
|
cols: btree.New(16, 0),
|
|
follows: make(map[*bytes.Buffer]bool),
|
|
fcond: sync.NewCond(&sync.Mutex{}),
|
|
lives: make(map[*liveBuffer]bool),
|
|
lcond: sync.NewCond(&sync.Mutex{}),
|
|
hooks: make(map[string]*Hook),
|
|
hookcols: make(map[string]map[string]*Hook),
|
|
aofconnM: make(map[net.Conn]bool),
|
|
expires: make(map[string]map[string]time.Time),
|
|
started: time.Now(),
|
|
conns: make(map[*server.Conn]bool),
|
|
epc: endpoint.NewEndpointManager(),
|
|
}
|
|
if err := os.MkdirAll(dir, 0700); err != nil {
|
|
return err
|
|
}
|
|
if err := c.loadConfig(); err != nil {
|
|
return err
|
|
}
|
|
// load the queue before the aof
|
|
qdb, err := buntdb.Open(path.Join(dir, "queue.db"))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
var qidx uint64
|
|
if err := qdb.View(func(tx *buntdb.Tx) error {
|
|
val, err := tx.Get("hook:idx")
|
|
if err != nil {
|
|
if err == buntdb.ErrNotFound {
|
|
return nil
|
|
}
|
|
return err
|
|
}
|
|
qidx = stringToUint64(val)
|
|
return nil
|
|
}); err != nil {
|
|
return err
|
|
}
|
|
err = qdb.CreateIndex("hooks", hookLogPrefix+"*", buntdb.IndexJSONCaseSensitive("hook"))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
c.qdb = qdb
|
|
c.qidx = qidx
|
|
if err := c.migrateAOF(); err != nil {
|
|
return err
|
|
}
|
|
f, err := os.OpenFile(path.Join(dir, "appendonly.aof"), os.O_CREATE|os.O_RDWR, 0600)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
c.f = f
|
|
if err := c.loadAOF(); err != nil {
|
|
return err
|
|
}
|
|
c.mu.Lock()
|
|
if c.config.FollowHost != "" {
|
|
go c.follow(c.config.FollowHost, c.config.FollowPort, c.followc)
|
|
}
|
|
c.mu.Unlock()
|
|
defer func() {
|
|
c.mu.Lock()
|
|
c.followc++ // this will force any follow communication to die
|
|
c.mu.Unlock()
|
|
}()
|
|
go c.processLives()
|
|
go c.watchMemory()
|
|
go c.backgroundExpiring()
|
|
defer func() {
|
|
c.mu.Lock()
|
|
c.stopBackgroundExpiring = true
|
|
c.stopWatchingMemory = true
|
|
c.mu.Unlock()
|
|
}()
|
|
handler := func(conn *server.Conn, msg *server.Message, rd *server.AnyReaderWriter, w io.Writer, websocket bool) error {
|
|
c.mu.Lock()
|
|
c.statsTotalCommands++
|
|
c.mu.Unlock()
|
|
err := c.handleInputCommand(conn, msg, w)
|
|
if err != nil {
|
|
if err.Error() == "going live" {
|
|
return c.goLive(err, conn, rd, msg, websocket)
|
|
}
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
protected := func() bool {
|
|
if core.ProtectedMode == "no" {
|
|
// --protected-mode no
|
|
return false
|
|
}
|
|
if host != "" && host != "127.0.0.1" && host != "::1" && host != "localhost" {
|
|
// -h address
|
|
return false
|
|
}
|
|
c.mu.RLock()
|
|
is := c.config.ProtectedMode != "no" && c.config.RequirePass == ""
|
|
c.mu.RUnlock()
|
|
return is
|
|
}
|
|
opened := func(conn *server.Conn) {
|
|
c.mu.Lock()
|
|
c.conns[conn] = true
|
|
c.statsTotalConns++
|
|
c.mu.Unlock()
|
|
}
|
|
closed := func(conn *server.Conn) {
|
|
c.mu.Lock()
|
|
delete(c.conns, conn)
|
|
c.mu.Unlock()
|
|
}
|
|
return server.ListenAndServe(host, port, protected, handler, opened, closed, ln)
|
|
}
|
|
|
|
func (c *Controller) watchMemory() {
|
|
t := time.NewTicker(time.Second * 2)
|
|
defer t.Stop()
|
|
var mem runtime.MemStats
|
|
for range t.C {
|
|
func() {
|
|
c.mu.RLock()
|
|
if c.stopWatchingMemory {
|
|
c.mu.RUnlock()
|
|
return
|
|
}
|
|
maxmem := c.config.MaxMemory
|
|
oom := c.outOfMemory
|
|
c.mu.RUnlock()
|
|
if maxmem == 0 {
|
|
if oom {
|
|
c.mu.Lock()
|
|
c.outOfMemory = false
|
|
c.mu.Unlock()
|
|
}
|
|
return
|
|
}
|
|
if oom {
|
|
runtime.GC()
|
|
}
|
|
runtime.ReadMemStats(&mem)
|
|
c.mu.Lock()
|
|
c.outOfMemory = int(mem.HeapAlloc) > maxmem
|
|
c.mu.Unlock()
|
|
}()
|
|
}
|
|
}
|
|
|
|
func (c *Controller) setCol(key string, col *collection.Collection) {
|
|
c.cols.ReplaceOrInsert(&collectionT{Key: key, Collection: col})
|
|
}
|
|
|
|
func (c *Controller) getCol(key string) *collection.Collection {
|
|
item := c.cols.Get(&collectionT{Key: key})
|
|
if item == nil {
|
|
return nil
|
|
}
|
|
return item.(*collectionT).Collection
|
|
}
|
|
|
|
func (c *Controller) scanGreaterOrEqual(key string, iterator func(key string, col *collection.Collection) bool) {
|
|
c.cols.AscendGreaterOrEqual(&collectionT{Key: key}, func(item btree.Item) bool {
|
|
col := item.(*collectionT)
|
|
return iterator(col.Key, col.Collection)
|
|
})
|
|
}
|
|
|
|
func (c *Controller) deleteCol(key string) *collection.Collection {
|
|
i := c.cols.Delete(&collectionT{Key: key})
|
|
if i == nil {
|
|
return nil
|
|
}
|
|
return i.(*collectionT).Collection
|
|
}
|
|
|
|
func isReservedFieldName(field string) bool {
|
|
switch field {
|
|
case "z", "lat", "lon":
|
|
return true
|
|
}
|
|
return false
|
|
}
|
|
|
|
func (c *Controller) handleInputCommand(conn *server.Conn, msg *server.Message, w io.Writer) error {
|
|
var words []string
|
|
for _, v := range msg.Values {
|
|
words = append(words, v.String())
|
|
}
|
|
start := time.Now()
|
|
writeOutput := func(res string) error {
|
|
switch msg.ConnType {
|
|
default:
|
|
err := fmt.Errorf("unsupported conn type: %v", msg.ConnType)
|
|
log.Error(err)
|
|
return err
|
|
case server.WebSocket:
|
|
return server.WriteWebSocketMessage(w, []byte(res))
|
|
case server.HTTP:
|
|
_, err := fmt.Fprintf(w, "HTTP/1.1 200 OK\r\n"+
|
|
"Connection: close\r\n"+
|
|
"Content-Length: %d\r\n"+
|
|
"Content-Type: application/json; charset=utf-8\r\n"+
|
|
"\r\n", len(res)+2)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
_, err = io.WriteString(w, res)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
_, err = io.WriteString(w, "\r\n")
|
|
return err
|
|
case server.RESP:
|
|
var err error
|
|
if msg.OutputType == server.JSON {
|
|
_, err = fmt.Fprintf(w, "$%d\r\n%s\r\n", len(res), res)
|
|
} else {
|
|
_, err = io.WriteString(w, res)
|
|
}
|
|
return err
|
|
case server.Native:
|
|
_, err := fmt.Fprintf(w, "$%d %s\r\n", len(res), res)
|
|
return err
|
|
}
|
|
}
|
|
// Ping. Just send back the response. No need to put through the pipeline.
|
|
if msg.Command == "ping" {
|
|
switch msg.OutputType {
|
|
case server.JSON:
|
|
return writeOutput(`{"ok":true,"ping":"pong","elapsed":"` + time.Now().Sub(start).String() + `"}`)
|
|
case server.RESP:
|
|
return writeOutput("+PONG\r\n")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
writeErr := func(err error) error {
|
|
switch msg.OutputType {
|
|
case server.JSON:
|
|
return writeOutput(`{"ok":false,"err":` + jsonString(err.Error()) + `,"elapsed":"` + time.Now().Sub(start).String() + "\"}")
|
|
case server.RESP:
|
|
if err == errInvalidNumberOfArguments {
|
|
return writeOutput("-ERR wrong number of arguments for '" + msg.Command + "' command\r\n")
|
|
}
|
|
v, _ := resp.ErrorValue(errors.New("ERR " + err.Error())).MarshalRESP()
|
|
return writeOutput(string(v))
|
|
}
|
|
return nil
|
|
}
|
|
|
|
var write bool
|
|
|
|
if !conn.Authenticated || msg.Command == "auth" {
|
|
c.mu.RLock()
|
|
requirePass := c.config.RequirePass
|
|
c.mu.RUnlock()
|
|
if requirePass != "" {
|
|
password := ""
|
|
// This better be an AUTH command or the Message should contain an Auth
|
|
if msg.Command != "auth" && msg.Auth == "" {
|
|
// Just shut down the pipeline now. The less the client connection knows the better.
|
|
return writeErr(errors.New("authentication required"))
|
|
}
|
|
if msg.Auth != "" {
|
|
password = msg.Auth
|
|
} else {
|
|
if len(msg.Values) > 1 {
|
|
password = msg.Values[1].String()
|
|
}
|
|
}
|
|
if requirePass != strings.TrimSpace(password) {
|
|
return writeErr(errors.New("invalid password"))
|
|
}
|
|
conn.Authenticated = true
|
|
if msg.ConnType != server.HTTP {
|
|
return writeOutput(server.OKMessage(msg, start))
|
|
}
|
|
} else if msg.Command == "auth" {
|
|
return writeErr(errors.New("invalid password"))
|
|
}
|
|
}
|
|
// choose the locking strategy
|
|
switch msg.Command {
|
|
default:
|
|
c.mu.RLock()
|
|
defer c.mu.RUnlock()
|
|
case "set", "del", "drop", "fset", "flushdb", "sethook", "pdelhook", "delhook",
|
|
"expire", "persist", "jset":
|
|
// write operations
|
|
write = true
|
|
c.mu.Lock()
|
|
defer c.mu.Unlock()
|
|
if c.config.FollowHost != "" {
|
|
return writeErr(errors.New("not the leader"))
|
|
}
|
|
if c.config.ReadOnly {
|
|
return writeErr(errors.New("read only"))
|
|
}
|
|
case "get", "keys", "scan", "nearby", "within", "intersects", "hooks", "search",
|
|
"ttl", "bounds", "server", "info", "type", "jget":
|
|
// read operations
|
|
c.mu.RLock()
|
|
defer c.mu.RUnlock()
|
|
if c.config.FollowHost != "" && !c.fcup {
|
|
return writeErr(errors.New("catching up to leader"))
|
|
}
|
|
case "follow", "readonly", "config":
|
|
// system operations
|
|
// does not write to aof, but requires a write lock.
|
|
c.mu.Lock()
|
|
defer c.mu.Unlock()
|
|
case "output":
|
|
// this is local connection operation. Locks not needed.
|
|
case "massinsert":
|
|
// dev operation
|
|
c.mu.Lock()
|
|
defer c.mu.Unlock()
|
|
case "shutdown":
|
|
// dev operation
|
|
c.mu.Lock()
|
|
defer c.mu.Unlock()
|
|
case "aofshrink":
|
|
c.mu.RLock()
|
|
defer c.mu.RUnlock()
|
|
}
|
|
|
|
res, d, err := c.command(msg, w)
|
|
if err != nil {
|
|
if err.Error() == "going live" {
|
|
return err
|
|
}
|
|
return writeErr(err)
|
|
}
|
|
if write {
|
|
if err := c.writeAOF(resp.ArrayValue(msg.Values), &d); err != nil {
|
|
if _, ok := err.(errAOFHook); ok {
|
|
return writeErr(err)
|
|
}
|
|
log.Fatal(err)
|
|
return err
|
|
}
|
|
}
|
|
if res != "" {
|
|
if err := writeOutput(res); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func randomKey(n int) string {
|
|
b := make([]byte, n)
|
|
nn, err := rand.Read(b)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
if nn != n {
|
|
panic("random failed")
|
|
}
|
|
return fmt.Sprintf("%x", b)
|
|
}
|
|
|
|
func (c *Controller) reset() {
|
|
c.aofsz = 0
|
|
c.cols = btree.New(16, 0)
|
|
}
|
|
|
|
func (c *Controller) command(msg *server.Message, w io.Writer) (res string, d commandDetailsT, err error) {
|
|
switch msg.Command {
|
|
default:
|
|
err = fmt.Errorf("unknown command '%s'", msg.Values[0])
|
|
case "set":
|
|
res, d, err = c.cmdSet(msg)
|
|
case "fset":
|
|
res, d, err = c.cmdFset(msg)
|
|
case "del":
|
|
res, d, err = c.cmdDel(msg)
|
|
case "drop":
|
|
res, d, err = c.cmdDrop(msg)
|
|
case "flushdb":
|
|
res, d, err = c.cmdFlushDB(msg)
|
|
case "sethook":
|
|
res, d, err = c.cmdSetHook(msg)
|
|
case "delhook":
|
|
res, d, err = c.cmdDelHook(msg)
|
|
case "pdelhook":
|
|
res, d, err = c.cmdPDelHook(msg)
|
|
case "expire":
|
|
res, d, err = c.cmdExpire(msg)
|
|
case "persist":
|
|
res, d, err = c.cmdPersist(msg)
|
|
case "ttl":
|
|
res, d, err = c.cmdTTL(msg)
|
|
case "hooks":
|
|
res, err = c.cmdHooks(msg)
|
|
case "shutdown":
|
|
if !core.DevMode {
|
|
err = fmt.Errorf("unknown command '%s'", msg.Values[0])
|
|
return
|
|
}
|
|
log.Fatal("shutdown requested by developer")
|
|
case "massinsert":
|
|
if !core.DevMode {
|
|
err = fmt.Errorf("unknown command '%s'", msg.Values[0])
|
|
return
|
|
}
|
|
res, err = c.cmdMassInsert(msg)
|
|
case "follow":
|
|
res, err = c.cmdFollow(msg)
|
|
case "readonly":
|
|
res, err = c.cmdReadOnly(msg)
|
|
case "stats":
|
|
res, err = c.cmdStats(msg)
|
|
case "server":
|
|
res, err = c.cmdServer(msg)
|
|
case "info":
|
|
res, err = c.cmdInfo(msg)
|
|
case "scan":
|
|
res, err = c.cmdScan(msg)
|
|
case "nearby":
|
|
res, err = c.cmdNearby(msg)
|
|
case "within":
|
|
res, err = c.cmdWithin(msg)
|
|
case "intersects":
|
|
res, err = c.cmdIntersects(msg)
|
|
case "search":
|
|
res, err = c.cmdSearch(msg)
|
|
case "bounds":
|
|
res, err = c.cmdBounds(msg)
|
|
case "get":
|
|
res, err = c.cmdGet(msg)
|
|
case "jget":
|
|
res, err = c.cmdJget(msg)
|
|
case "jset":
|
|
res, d, err = c.cmdJset(msg)
|
|
case "jdel":
|
|
res, d, err = c.cmdJdel(msg)
|
|
case "type":
|
|
res, err = c.cmdType(msg)
|
|
case "keys":
|
|
res, err = c.cmdKeys(msg)
|
|
case "output":
|
|
res, err = c.cmdOutput(msg)
|
|
case "aof":
|
|
res, err = c.cmdAOF(msg)
|
|
case "aofmd5":
|
|
res, err = c.cmdAOFMD5(msg)
|
|
case "gc":
|
|
go runtime.GC()
|
|
res = server.OKMessage(msg, time.Now())
|
|
case "aofshrink":
|
|
go c.aofshrink()
|
|
res = server.OKMessage(msg, time.Now())
|
|
case "config get":
|
|
res, err = c.cmdConfigGet(msg)
|
|
case "config set":
|
|
res, err = c.cmdConfigSet(msg)
|
|
case "config rewrite":
|
|
res, err = c.cmdConfigRewrite(msg)
|
|
case "config":
|
|
err = fmt.Errorf("unknown command '%s'", msg.Values[0])
|
|
if len(msg.Values) > 1 {
|
|
command := msg.Values[0].String() + " " + msg.Values[1].String()
|
|
msg.Values[1] = resp.StringValue(command)
|
|
msg.Values = msg.Values[1:]
|
|
msg.Command = strings.ToLower(command)
|
|
return c.command(msg, w)
|
|
}
|
|
}
|
|
return
|
|
}
|