seperate the behavior from client : client input , request handle

This commit is contained in:
silentsai 2014-07-31 18:28:19 +08:00
parent 14767ecadb
commit 715e35098c
11 changed files with 637 additions and 557 deletions

View File

@ -123,7 +123,7 @@ func (app *App) Run() {
continue
}
newTcpClient(conn, app)
newClientRESP(conn, app)
}
}

View File

@ -1,160 +0,0 @@
package server
import (
"bytes"
"errors"
"github.com/siddontang/go-log/log"
"github.com/siddontang/ledisdb/ledis"
"io"
"net"
"runtime"
"strings"
"time"
)
var errReadRequest = errors.New("invalid request protocol")
type client struct {
app *App
ldb *ledis.Ledis
db *ledis.DB
ctx clientContext
resp responseWriter
req requestReader
cmd string
args [][]byte
reqC chan error
compressBuf []byte
syncBuf bytes.Buffer
logBuf bytes.Buffer
}
type clientContext interface {
addr() string
release()
}
type requestReader interface {
// readLine func() ([]byte, error)
read() ([][]byte, error)
}
type responseWriter interface {
writeError(error)
writeStatus(string)
writeInteger(int64)
writeBulk([]byte)
writeArray([]interface{})
writeSliceArray([][]byte)
writeFVPairArray([]ledis.FVPair)
writeScorePairArray([]ledis.ScorePair, bool)
writeBulkFrom(int64, io.Reader)
flush()
}
func newClient(app *App) *client {
c := new(client)
c.app = app
c.ldb = app.ldb
c.db, _ = app.ldb.Select(0)
c.reqC = make(chan error, 1)
c.compressBuf = make([]byte, 256)
return c
}
func (c *client) run() {
defer func() {
if e := recover(); e != nil {
buf := make([]byte, 4096)
n := runtime.Stack(buf, false)
buf = buf[0:n]
log.Fatal("client run panic %s:%v", buf, e)
}
c.ctx.release()
}()
for {
req, err := c.req.read()
if err != nil {
return
}
c.handleRequest(req)
}
}
func (c *client) handleRequest(req [][]byte) {
var err error
start := time.Now()
if len(req) == 0 {
err = ErrEmptyCommand
} else {
c.cmd = strings.ToLower(ledis.String(req[0]))
c.args = req[1:]
f, ok := regCmds[c.cmd]
if !ok {
err = ErrNotFound
} else {
go func() {
c.reqC <- f(c)
}()
err = <-c.reqC
}
}
duration := time.Since(start)
if c.app.access != nil {
c.logBuf.Reset()
for i, r := range req {
left := 256 - c.logBuf.Len()
if left <= 0 {
break
} else if len(r) <= left {
c.logBuf.Write(r)
if i != len(req)-1 {
c.logBuf.WriteByte(' ')
}
} else {
c.logBuf.Write(r[0:left])
}
}
c.app.access.Log(c.ctx.addr(), duration.Nanoseconds()/1000000, c.logBuf.Bytes(), err)
}
if err != nil {
c.resp.writeError(err)
}
c.resp.flush()
}
func newTcpClient(conn net.Conn, app *App) {
c := newClient(app)
c.ctx = newTcpContext(conn)
c.req = newTcpReader(conn)
c.resp = newTcpWriter(conn)
go c.run()
}
// func newHttpClient(w http.ResponseWriter, r *http.Request, app *App) {
// c := newClient(app)
// go c.run()
// }

View File

@ -3,58 +3,81 @@ package server
import (
"bufio"
"errors"
"github.com/siddontang/go-log/log"
"github.com/siddontang/ledisdb/ledis"
"io"
"net"
"runtime"
"strconv"
"strings"
)
type tcpContext struct {
var errReadRequest = errors.New("invalid request protocol")
type respClient struct {
app *App
ldb *ledis.Ledis
db *ledis.DB
conn net.Conn
rb *bufio.Reader
req *requestContext
hdl *requestHandler
}
type tcpWriter struct {
type respWriter struct {
buff *bufio.Writer
}
type tcpReader struct {
buff *bufio.Reader
func newClientRESP(conn net.Conn, app *App) {
c := new(respClient)
c.app = app
c.conn = conn
c.ldb = app.ldb
c.db, _ = app.ldb.Select(0)
c.rb = bufio.NewReaderSize(conn, 256)
c.req = newRequestContext(app)
c.req.resp = newWriterRESP(conn)
c.hdl = newRequestHandler(app)
go c.run()
}
// tcp context
func (c *respClient) run() {
defer func() {
if e := recover(); e != nil {
buf := make([]byte, 4096)
n := runtime.Stack(buf, false)
buf = buf[0:n]
func newTcpContext(conn net.Conn) *tcpContext {
ctx := new(tcpContext)
ctx.conn = conn
return ctx
}
log.Fatal("client run panic %s:%v", buf, e)
}
func (ctx *tcpContext) addr() string {
return ctx.conn.RemoteAddr().String()
}
c.conn.Close()
}()
func (ctx *tcpContext) release() {
if ctx.conn != nil {
ctx.conn.Close()
ctx.conn = nil
for {
reqData, err := c.readRequest()
if err != nil {
return
}
c.handleRequest(reqData)
}
}
// tcp reader
func newTcpReader(conn net.Conn) *tcpReader {
r := new(tcpReader)
r.buff = bufio.NewReaderSize(conn, 256)
return r
}
func (r *tcpReader) readLine() ([]byte, error) {
return ReadLine(r.buff)
func (c *respClient) readLine() ([]byte, error) {
return ReadLine(c.rb)
}
//A client sends to the Redis server a RESP Array consisting of just Bulk Strings.
func (r *tcpReader) read() ([][]byte, error) {
l, err := r.readLine()
func (c *respClient) readRequest() ([][]byte, error) {
l, err := c.readLine()
if err != nil {
return nil, err
} else if len(l) == 0 || l[0] != '*' {
@ -68,10 +91,10 @@ func (r *tcpReader) read() ([][]byte, error) {
return nil, errReadRequest
}
reqData := make([][]byte, 0, nparams)
req := make([][]byte, 0, nparams)
var n int
for i := 0; i < nparams; i++ {
if l, err = r.readLine(); err != nil {
if l, err = c.readLine(); err != nil {
return nil, err
}
@ -82,20 +105,20 @@ func (r *tcpReader) read() ([][]byte, error) {
if n, err = strconv.Atoi(ledis.String(l[1:])); err != nil {
return nil, err
} else if n == -1 {
reqData = append(reqData, nil)
req = append(req, nil)
} else {
buf := make([]byte, n)
if _, err = io.ReadFull(r.buff, buf); err != nil {
if _, err = io.ReadFull(c.rb, buf); err != nil {
return nil, err
}
if l, err = r.readLine(); err != nil {
if l, err = c.readLine(); err != nil {
return nil, err
} else if len(l) != 0 {
return nil, errors.New("bad bulk string format")
}
reqData = append(reqData, buf)
req = append(req, buf)
}
@ -104,18 +127,35 @@ func (r *tcpReader) read() ([][]byte, error) {
}
}
return reqData, nil
return req, nil
}
// tcp writer
func (c *respClient) handleRequest(reqData [][]byte) {
req := c.req
func newTcpWriter(conn net.Conn) *tcpWriter {
w := new(tcpWriter)
req.db = c.db
req.remoteAddr = c.conn.RemoteAddr().String()
if len(reqData) == 0 {
c.req.cmd = ""
c.req.args = reqData[0:0]
} else {
c.req.cmd = strings.ToLower(ledis.String(reqData[0]))
c.req.args = reqData[1:]
}
c.hdl.postRequest(req)
}
// response writer
func newWriterRESP(conn net.Conn) *respWriter {
w := new(respWriter)
w.buff = bufio.NewWriterSize(conn, 256)
return w
}
func (w *tcpWriter) writeError(err error) {
func (w *respWriter) writeError(err error) {
w.buff.Write(ledis.Slice("-ERR"))
if err != nil {
w.buff.WriteByte(' ')
@ -124,19 +164,19 @@ func (w *tcpWriter) writeError(err error) {
w.buff.Write(Delims)
}
func (w *tcpWriter) writeStatus(status string) {
func (w *respWriter) writeStatus(status string) {
w.buff.WriteByte('+')
w.buff.Write(ledis.Slice(status))
w.buff.Write(Delims)
}
func (w *tcpWriter) writeInteger(n int64) {
func (w *respWriter) writeInteger(n int64) {
w.buff.WriteByte(':')
w.buff.Write(ledis.StrPutInt64(n))
w.buff.Write(Delims)
}
func (w *tcpWriter) writeBulk(b []byte) {
func (w *respWriter) writeBulk(b []byte) {
w.buff.WriteByte('$')
if b == nil {
w.buff.Write(NullBulk)
@ -149,7 +189,7 @@ func (w *tcpWriter) writeBulk(b []byte) {
w.buff.Write(Delims)
}
func (w *tcpWriter) writeArray(lst []interface{}) {
func (w *respWriter) writeArray(lst []interface{}) {
w.buff.WriteByte('*')
if lst == nil {
w.buff.Write(NullArray)
@ -175,7 +215,7 @@ func (w *tcpWriter) writeArray(lst []interface{}) {
}
}
func (w *tcpWriter) writeSliceArray(lst [][]byte) {
func (w *respWriter) writeSliceArray(lst [][]byte) {
w.buff.WriteByte('*')
if lst == nil {
w.buff.Write(NullArray)
@ -190,7 +230,7 @@ func (w *tcpWriter) writeSliceArray(lst [][]byte) {
}
}
func (w *tcpWriter) writeFVPairArray(lst []ledis.FVPair) {
func (w *respWriter) writeFVPairArray(lst []ledis.FVPair) {
w.buff.WriteByte('*')
if lst == nil {
w.buff.Write(NullArray)
@ -206,7 +246,7 @@ func (w *tcpWriter) writeFVPairArray(lst []ledis.FVPair) {
}
}
func (w *tcpWriter) writeScorePairArray(lst []ledis.ScorePair, withScores bool) {
func (w *respWriter) writeScorePairArray(lst []ledis.ScorePair, withScores bool) {
w.buff.WriteByte('*')
if lst == nil {
w.buff.Write(NullArray)
@ -231,7 +271,7 @@ func (w *tcpWriter) writeScorePairArray(lst []ledis.ScorePair, withScores bool)
}
}
func (w *tcpWriter) writeBulkFrom(n int64, rb io.Reader) {
func (w *respWriter) writeBulkFrom(n int64, rb io.Reader) {
w.buff.WriteByte('$')
w.buff.Write(ledis.Slice(strconv.FormatInt(n, 10)))
w.buff.Write(Delims)
@ -240,6 +280,6 @@ func (w *tcpWriter) writeBulkFrom(n int64, rb io.Reader) {
w.buff.Write(Delims)
}
func (w *tcpWriter) flush() {
func (w *respWriter) flush() {
w.buff.Flush()
}

View File

@ -5,36 +5,36 @@ import (
"strings"
)
func bgetCommand(c *client) error {
args := c.args
func bgetCommand(req *requestContext) error {
args := req.args
if len(args) != 1 {
return ErrCmdParams
}
if v, err := c.db.BGet(args[0]); err != nil {
if v, err := req.db.BGet(args[0]); err != nil {
return err
} else {
c.resp.writeBulk(v)
req.resp.writeBulk(v)
}
return nil
}
func bdeleteCommand(c *client) error {
args := c.args
func bdeleteCommand(req *requestContext) error {
args := req.args
if len(args) != 1 {
return ErrCmdParams
}
if n, err := c.db.BDelete(args[0]); err != nil {
if n, err := req.db.BDelete(args[0]); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func bsetbitCommand(c *client) error {
args := c.args
func bsetbitCommand(req *requestContext) error {
args := req.args
if len(args) != 3 {
return ErrCmdParams
}
@ -53,16 +53,16 @@ func bsetbitCommand(c *client) error {
return err
}
if ori, err := c.db.BSetBit(args[0], offset, uint8(val)); err != nil {
if ori, err := req.db.BSetBit(args[0], offset, uint8(val)); err != nil {
return err
} else {
c.resp.writeInteger(int64(ori))
req.resp.writeInteger(int64(ori))
}
return nil
}
func bgetbitCommand(c *client) error {
args := c.args
func bgetbitCommand(req *requestContext) error {
args := req.args
if len(args) != 2 {
return ErrCmdParams
}
@ -72,16 +72,16 @@ func bgetbitCommand(c *client) error {
return err
}
if v, err := c.db.BGetBit(args[0], offset); err != nil {
if v, err := req.db.BGetBit(args[0], offset); err != nil {
return err
} else {
c.resp.writeInteger(int64(v))
req.resp.writeInteger(int64(v))
}
return nil
}
func bmsetbitCommand(c *client) error {
args := c.args
func bmsetbitCommand(req *requestContext) error {
args := req.args
if len(args) < 3 {
return ErrCmdParams
}
@ -113,16 +113,16 @@ func bmsetbitCommand(c *client) error {
pairs[i].Val = uint8(val)
}
if place, err := c.db.BMSetBit(key, pairs...); err != nil {
if place, err := req.db.BMSetBit(key, pairs...); err != nil {
return err
} else {
c.resp.writeInteger(place)
req.resp.writeInteger(place)
}
return nil
}
func bcountCommand(c *client) error {
args := c.args
func bcountCommand(req *requestContext) error {
args := req.args
argCnt := len(args)
if !(argCnt > 0 && argCnt <= 3) {
@ -148,16 +148,16 @@ func bcountCommand(c *client) error {
}
}
if cnt, err := c.db.BCount(args[0], start, end); err != nil {
if cnt, err := req.db.BCount(args[0], start, end); err != nil {
return err
} else {
c.resp.writeInteger(int64(cnt))
req.resp.writeInteger(int64(cnt))
}
return nil
}
func boptCommand(c *client) error {
args := c.args
func boptCommand(req *requestContext) error {
args := req.args
if len(args) < 2 {
return ErrCmdParams
}
@ -180,16 +180,16 @@ func boptCommand(c *client) error {
return ErrCmdParams
}
if blen, err := c.db.BOperation(op, dstKey, srcKeys...); err != nil {
if blen, err := req.db.BOperation(op, dstKey, srcKeys...); err != nil {
return err
} else {
c.resp.writeInteger(int64(blen))
req.resp.writeInteger(int64(blen))
}
return nil
}
func bexpireCommand(c *client) error {
args := c.args
func bexpireCommand(req *requestContext) error {
args := req.args
if len(args) == 0 {
return ErrCmdParams
}
@ -199,17 +199,17 @@ func bexpireCommand(c *client) error {
return err
}
if v, err := c.db.BExpire(args[0], duration); err != nil {
if v, err := req.db.BExpire(args[0], duration); err != nil {
return err
} else {
c.resp.writeInteger(v)
req.resp.writeInteger(v)
}
return nil
}
func bexpireatCommand(c *client) error {
args := c.args
func bexpireatCommand(req *requestContext) error {
args := req.args
if len(args) == 0 {
return ErrCmdParams
}
@ -219,40 +219,40 @@ func bexpireatCommand(c *client) error {
return err
}
if v, err := c.db.BExpireAt(args[0], when); err != nil {
if v, err := req.db.BExpireAt(args[0], when); err != nil {
return err
} else {
c.resp.writeInteger(v)
req.resp.writeInteger(v)
}
return nil
}
func bttlCommand(c *client) error {
args := c.args
func bttlCommand(req *requestContext) error {
args := req.args
if len(args) == 0 {
return ErrCmdParams
}
if v, err := c.db.BTTL(args[0]); err != nil {
if v, err := req.db.BTTL(args[0]); err != nil {
return err
} else {
c.resp.writeInteger(v)
req.resp.writeInteger(v)
}
return nil
}
func bpersistCommand(c *client) error {
args := c.args
func bpersistCommand(req *requestContext) error {
args := req.args
if len(args) != 1 {
return ErrCmdParams
}
if n, err := c.db.BPersist(args[0]); err != nil {
if n, err := req.db.BPersist(args[0]); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil

View File

@ -4,87 +4,87 @@ import (
"github.com/siddontang/ledisdb/ledis"
)
func hsetCommand(c *client) error {
args := c.args
func hsetCommand(req *requestContext) error {
args := req.args
if len(args) != 3 {
return ErrCmdParams
}
if n, err := c.db.HSet(args[0], args[1], args[2]); err != nil {
if n, err := req.db.HSet(args[0], args[1], args[2]); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func hgetCommand(c *client) error {
args := c.args
func hgetCommand(req *requestContext) error {
args := req.args
if len(args) != 2 {
return ErrCmdParams
}
if v, err := c.db.HGet(args[0], args[1]); err != nil {
if v, err := req.db.HGet(args[0], args[1]); err != nil {
return err
} else {
c.resp.writeBulk(v)
req.resp.writeBulk(v)
}
return nil
}
func hexistsCommand(c *client) error {
args := c.args
func hexistsCommand(req *requestContext) error {
args := req.args
if len(args) != 2 {
return ErrCmdParams
}
var n int64 = 1
if v, err := c.db.HGet(args[0], args[1]); err != nil {
if v, err := req.db.HGet(args[0], args[1]); err != nil {
return err
} else {
if v == nil {
n = 0
}
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func hdelCommand(c *client) error {
args := c.args
func hdelCommand(req *requestContext) error {
args := req.args
if len(args) < 2 {
return ErrCmdParams
}
if n, err := c.db.HDel(args[0], args[1:]...); err != nil {
if n, err := req.db.HDel(args[0], args[1:]...); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func hlenCommand(c *client) error {
args := c.args
func hlenCommand(req *requestContext) error {
args := req.args
if len(args) != 1 {
return ErrCmdParams
}
if n, err := c.db.HLen(args[0]); err != nil {
if n, err := req.db.HLen(args[0]); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func hincrbyCommand(c *client) error {
args := c.args
func hincrbyCommand(req *requestContext) error {
args := req.args
if len(args) != 3 {
return ErrCmdParams
}
@ -95,16 +95,16 @@ func hincrbyCommand(c *client) error {
}
var n int64
if n, err = c.db.HIncrBy(args[0], args[1], delta); err != nil {
if n, err = req.db.HIncrBy(args[0], args[1], delta); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func hmsetCommand(c *client) error {
args := c.args
func hmsetCommand(req *requestContext) error {
args := req.args
if len(args) < 3 {
return ErrCmdParams
}
@ -123,107 +123,107 @@ func hmsetCommand(c *client) error {
kvs[i].Value = args[2*i+1]
}
if err := c.db.HMset(key, kvs...); err != nil {
if err := req.db.HMset(key, kvs...); err != nil {
return err
} else {
c.resp.writeStatus(OK)
req.resp.writeStatus(OK)
}
return nil
}
func hmgetCommand(c *client) error {
args := c.args
func hmgetCommand(req *requestContext) error {
args := req.args
if len(args) < 2 {
return ErrCmdParams
}
if v, err := c.db.HMget(args[0], args[1:]...); err != nil {
if v, err := req.db.HMget(args[0], args[1:]...); err != nil {
return err
} else {
c.resp.writeSliceArray(v)
req.resp.writeSliceArray(v)
}
return nil
}
func hgetallCommand(c *client) error {
args := c.args
func hgetallCommand(req *requestContext) error {
args := req.args
if len(args) != 1 {
return ErrCmdParams
}
if v, err := c.db.HGetAll(args[0]); err != nil {
if v, err := req.db.HGetAll(args[0]); err != nil {
return err
} else {
c.resp.writeFVPairArray(v)
req.resp.writeFVPairArray(v)
}
return nil
}
func hkeysCommand(c *client) error {
args := c.args
func hkeysCommand(req *requestContext) error {
args := req.args
if len(args) != 1 {
return ErrCmdParams
}
if v, err := c.db.HKeys(args[0]); err != nil {
if v, err := req.db.HKeys(args[0]); err != nil {
return err
} else {
c.resp.writeSliceArray(v)
req.resp.writeSliceArray(v)
}
return nil
}
func hvalsCommand(c *client) error {
args := c.args
func hvalsCommand(req *requestContext) error {
args := req.args
if len(args) != 1 {
return ErrCmdParams
}
if v, err := c.db.HValues(args[0]); err != nil {
if v, err := req.db.HValues(args[0]); err != nil {
return err
} else {
c.resp.writeSliceArray(v)
req.resp.writeSliceArray(v)
}
return nil
}
func hclearCommand(c *client) error {
args := c.args
func hclearCommand(req *requestContext) error {
args := req.args
if len(args) != 1 {
return ErrCmdParams
}
if n, err := c.db.HClear(args[0]); err != nil {
if n, err := req.db.HClear(args[0]); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func hmclearCommand(c *client) error {
args := c.args
func hmclearCommand(req *requestContext) error {
args := req.args
if len(args) < 1 {
return ErrCmdParams
}
if n, err := c.db.HMclear(args...); err != nil {
if n, err := req.db.HMclear(args...); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func hexpireCommand(c *client) error {
args := c.args
func hexpireCommand(req *requestContext) error {
args := req.args
if len(args) != 2 {
return ErrCmdParams
}
@ -233,17 +233,17 @@ func hexpireCommand(c *client) error {
return err
}
if v, err := c.db.HExpire(args[0], duration); err != nil {
if v, err := req.db.HExpire(args[0], duration); err != nil {
return err
} else {
c.resp.writeInteger(v)
req.resp.writeInteger(v)
}
return nil
}
func hexpireAtCommand(c *client) error {
args := c.args
func hexpireAtCommand(req *requestContext) error {
args := req.args
if len(args) != 2 {
return ErrCmdParams
}
@ -253,40 +253,40 @@ func hexpireAtCommand(c *client) error {
return err
}
if v, err := c.db.HExpireAt(args[0], when); err != nil {
if v, err := req.db.HExpireAt(args[0], when); err != nil {
return err
} else {
c.resp.writeInteger(v)
req.resp.writeInteger(v)
}
return nil
}
func httlCommand(c *client) error {
args := c.args
func httlCommand(req *requestContext) error {
args := req.args
if len(args) != 1 {
return ErrCmdParams
}
if v, err := c.db.HTTL(args[0]); err != nil {
if v, err := req.db.HTTL(args[0]); err != nil {
return err
} else {
c.resp.writeInteger(v)
req.resp.writeInteger(v)
}
return nil
}
func hpersistCommand(c *client) error {
args := c.args
func hpersistCommand(req *requestContext) error {
args := req.args
if len(args) != 1 {
return ErrCmdParams
}
if n, err := c.db.HPersist(args[0]); err != nil {
if n, err := req.db.HPersist(args[0]); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil

View File

@ -4,112 +4,112 @@ import (
"github.com/siddontang/ledisdb/ledis"
)
func getCommand(c *client) error {
args := c.args
func getCommand(req *requestContext) error {
args := req.args
if len(args) != 1 {
return ErrCmdParams
}
if v, err := c.db.Get(args[0]); err != nil {
if v, err := req.db.Get(args[0]); err != nil {
return err
} else {
c.resp.writeBulk(v)
req.resp.writeBulk(v)
}
return nil
}
func setCommand(c *client) error {
args := c.args
func setCommand(req *requestContext) error {
args := req.args
if len(args) != 2 {
return ErrCmdParams
}
if err := c.db.Set(args[0], args[1]); err != nil {
if err := req.db.Set(args[0], args[1]); err != nil {
return err
} else {
c.resp.writeStatus(OK)
req.resp.writeStatus(OK)
}
return nil
}
func getsetCommand(c *client) error {
args := c.args
func getsetCommand(req *requestContext) error {
args := req.args
if len(args) != 2 {
return ErrCmdParams
}
if v, err := c.db.GetSet(args[0], args[1]); err != nil {
if v, err := req.db.GetSet(args[0], args[1]); err != nil {
return err
} else {
c.resp.writeBulk(v)
req.resp.writeBulk(v)
}
return nil
}
func setnxCommand(c *client) error {
args := c.args
func setnxCommand(req *requestContext) error {
args := req.args
if len(args) != 2 {
return ErrCmdParams
}
if n, err := c.db.SetNX(args[0], args[1]); err != nil {
if n, err := req.db.SetNX(args[0], args[1]); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func existsCommand(c *client) error {
args := c.args
func existsCommand(req *requestContext) error {
args := req.args
if len(args) != 1 {
return ErrCmdParams
}
if n, err := c.db.Exists(args[0]); err != nil {
if n, err := req.db.Exists(args[0]); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func incrCommand(c *client) error {
args := c.args
func incrCommand(req *requestContext) error {
args := req.args
if len(args) != 1 {
return ErrCmdParams
}
if n, err := c.db.Incr(c.args[0]); err != nil {
if n, err := req.db.Incr(req.args[0]); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func decrCommand(c *client) error {
args := c.args
func decrCommand(req *requestContext) error {
args := req.args
if len(args) != 1 {
return ErrCmdParams
}
if n, err := c.db.Decr(c.args[0]); err != nil {
if n, err := req.db.Decr(req.args[0]); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func incrbyCommand(c *client) error {
args := c.args
func incrbyCommand(req *requestContext) error {
args := req.args
if len(args) != 2 {
return ErrCmdParams
}
@ -119,17 +119,17 @@ func incrbyCommand(c *client) error {
return err
}
if n, err := c.db.IncryBy(c.args[0], delta); err != nil {
if n, err := req.db.IncryBy(req.args[0], delta); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func decrbyCommand(c *client) error {
args := c.args
func decrbyCommand(req *requestContext) error {
args := req.args
if len(args) != 2 {
return ErrCmdParams
}
@ -139,32 +139,32 @@ func decrbyCommand(c *client) error {
return err
}
if n, err := c.db.DecrBy(c.args[0], delta); err != nil {
if n, err := req.db.DecrBy(req.args[0], delta); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func delCommand(c *client) error {
args := c.args
func delCommand(req *requestContext) error {
args := req.args
if len(args) == 0 {
return ErrCmdParams
}
if n, err := c.db.Del(args...); err != nil {
if n, err := req.db.Del(args...); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func msetCommand(c *client) error {
args := c.args
func msetCommand(req *requestContext) error {
args := req.args
if len(args) == 0 || len(args)%2 != 0 {
return ErrCmdParams
}
@ -175,36 +175,36 @@ func msetCommand(c *client) error {
kvs[i].Value = args[2*i+1]
}
if err := c.db.MSet(kvs...); err != nil {
if err := req.db.MSet(kvs...); err != nil {
return err
} else {
c.resp.writeStatus(OK)
req.resp.writeStatus(OK)
}
return nil
}
// func setexCommand(c *client) error {
// func setexCommand(req *requestContext) error {
// return nil
// }
func mgetCommand(c *client) error {
args := c.args
func mgetCommand(req *requestContext) error {
args := req.args
if len(args) == 0 {
return ErrCmdParams
}
if v, err := c.db.MGet(args...); err != nil {
if v, err := req.db.MGet(args...); err != nil {
return err
} else {
c.resp.writeSliceArray(v)
req.resp.writeSliceArray(v)
}
return nil
}
func expireCommand(c *client) error {
args := c.args
func expireCommand(req *requestContext) error {
args := req.args
if len(args) != 2 {
return ErrCmdParams
}
@ -214,17 +214,17 @@ func expireCommand(c *client) error {
return err
}
if v, err := c.db.Expire(args[0], duration); err != nil {
if v, err := req.db.Expire(args[0], duration); err != nil {
return err
} else {
c.resp.writeInteger(v)
req.resp.writeInteger(v)
}
return nil
}
func expireAtCommand(c *client) error {
args := c.args
func expireAtCommand(req *requestContext) error {
args := req.args
if len(args) != 2 {
return ErrCmdParams
}
@ -234,40 +234,40 @@ func expireAtCommand(c *client) error {
return err
}
if v, err := c.db.ExpireAt(args[0], when); err != nil {
if v, err := req.db.ExpireAt(args[0], when); err != nil {
return err
} else {
c.resp.writeInteger(v)
req.resp.writeInteger(v)
}
return nil
}
func ttlCommand(c *client) error {
args := c.args
func ttlCommand(req *requestContext) error {
args := req.args
if len(args) != 1 {
return ErrCmdParams
}
if v, err := c.db.TTL(args[0]); err != nil {
if v, err := req.db.TTL(args[0]); err != nil {
return err
} else {
c.resp.writeInteger(v)
req.resp.writeInteger(v)
}
return nil
}
func persistCommand(c *client) error {
args := c.args
func persistCommand(req *requestContext) error {
args := req.args
if len(args) != 1 {
return ErrCmdParams
}
if n, err := c.db.Persist(args[0]); err != nil {
if n, err := req.db.Persist(args[0]); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil

View File

@ -4,83 +4,83 @@ import (
"github.com/siddontang/ledisdb/ledis"
)
func lpushCommand(c *client) error {
args := c.args
func lpushCommand(req *requestContext) error {
args := req.args
if len(args) < 2 {
return ErrCmdParams
}
if n, err := c.db.LPush(args[0], args[1:]...); err != nil {
if n, err := req.db.LPush(args[0], args[1:]...); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func rpushCommand(c *client) error {
args := c.args
func rpushCommand(req *requestContext) error {
args := req.args
if len(args) < 2 {
return ErrCmdParams
}
if n, err := c.db.RPush(args[0], args[1:]...); err != nil {
if n, err := req.db.RPush(args[0], args[1:]...); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func lpopCommand(c *client) error {
args := c.args
func lpopCommand(req *requestContext) error {
args := req.args
if len(args) != 1 {
return ErrCmdParams
}
if v, err := c.db.LPop(args[0]); err != nil {
if v, err := req.db.LPop(args[0]); err != nil {
return err
} else {
c.resp.writeBulk(v)
req.resp.writeBulk(v)
}
return nil
}
func rpopCommand(c *client) error {
args := c.args
func rpopCommand(req *requestContext) error {
args := req.args
if len(args) != 1 {
return ErrCmdParams
}
if v, err := c.db.RPop(args[0]); err != nil {
if v, err := req.db.RPop(args[0]); err != nil {
return err
} else {
c.resp.writeBulk(v)
req.resp.writeBulk(v)
}
return nil
}
func llenCommand(c *client) error {
args := c.args
func llenCommand(req *requestContext) error {
args := req.args
if len(args) != 1 {
return ErrCmdParams
}
if n, err := c.db.LLen(args[0]); err != nil {
if n, err := req.db.LLen(args[0]); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func lindexCommand(c *client) error {
args := c.args
func lindexCommand(req *requestContext) error {
args := req.args
if len(args) != 2 {
return ErrCmdParams
}
@ -90,17 +90,17 @@ func lindexCommand(c *client) error {
return err
}
if v, err := c.db.LIndex(args[0], int32(index)); err != nil {
if v, err := req.db.LIndex(args[0], int32(index)); err != nil {
return err
} else {
c.resp.writeBulk(v)
req.resp.writeBulk(v)
}
return nil
}
func lrangeCommand(c *client) error {
args := c.args
func lrangeCommand(req *requestContext) error {
args := req.args
if len(args) != 3 {
return ErrCmdParams
}
@ -119,47 +119,47 @@ func lrangeCommand(c *client) error {
return err
}
if v, err := c.db.LRange(args[0], int32(start), int32(stop)); err != nil {
if v, err := req.db.LRange(args[0], int32(start), int32(stop)); err != nil {
return err
} else {
c.resp.writeSliceArray(v)
req.resp.writeSliceArray(v)
}
return nil
}
func lclearCommand(c *client) error {
args := c.args
func lclearCommand(req *requestContext) error {
args := req.args
if len(args) != 1 {
return ErrCmdParams
}
if n, err := c.db.LClear(args[0]); err != nil {
if n, err := req.db.LClear(args[0]); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func lmclearCommand(c *client) error {
args := c.args
func lmclearCommand(req *requestContext) error {
args := req.args
if len(args) < 1 {
return ErrCmdParams
}
if n, err := c.db.LMclear(args...); err != nil {
if n, err := req.db.LMclear(args...); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func lexpireCommand(c *client) error {
args := c.args
func lexpireCommand(req *requestContext) error {
args := req.args
if len(args) != 2 {
return ErrCmdParams
}
@ -169,17 +169,17 @@ func lexpireCommand(c *client) error {
return err
}
if v, err := c.db.LExpire(args[0], duration); err != nil {
if v, err := req.db.LExpire(args[0], duration); err != nil {
return err
} else {
c.resp.writeInteger(v)
req.resp.writeInteger(v)
}
return nil
}
func lexpireAtCommand(c *client) error {
args := c.args
func lexpireAtCommand(req *requestContext) error {
args := req.args
if len(args) != 2 {
return ErrCmdParams
}
@ -189,40 +189,40 @@ func lexpireAtCommand(c *client) error {
return err
}
if v, err := c.db.LExpireAt(args[0], when); err != nil {
if v, err := req.db.LExpireAt(args[0], when); err != nil {
return err
} else {
c.resp.writeInteger(v)
req.resp.writeInteger(v)
}
return nil
}
func lttlCommand(c *client) error {
args := c.args
func lttlCommand(req *requestContext) error {
args := req.args
if len(args) != 1 {
return ErrCmdParams
}
if v, err := c.db.LTTL(args[0]); err != nil {
if v, err := req.db.LTTL(args[0]); err != nil {
return err
} else {
c.resp.writeInteger(v)
req.resp.writeInteger(v)
}
return nil
}
func lpersistCommand(c *client) error {
args := c.args
func lpersistCommand(req *requestContext) error {
args := req.args
if len(args) != 1 {
return ErrCmdParams
}
if n, err := c.db.LPersist(args[0]); err != nil {
if n, err := req.db.LPersist(args[0]); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil

View File

@ -11,8 +11,8 @@ import (
"strings"
)
func slaveofCommand(c *client) error {
args := c.args
func slaveofCommand(req *requestContext) error {
args := req.args
if len(args) != 2 {
return ErrCmdParams
@ -31,23 +31,23 @@ func slaveofCommand(c *client) error {
masterAddr = fmt.Sprintf("%s:%s", args[0], args[1])
}
if err := c.app.slaveof(masterAddr); err != nil {
if err := req.app.slaveof(masterAddr); err != nil {
return err
}
c.resp.writeStatus(OK)
req.resp.writeStatus(OK)
return nil
}
func fullsyncCommand(c *client) error {
func fullsyncCommand(req *requestContext) error {
//todo, multi fullsync may use same dump file
dumpFile, err := ioutil.TempFile(c.app.cfg.DataDir, "dump_")
dumpFile, err := ioutil.TempFile(req.app.cfg.DataDir, "dump_")
if err != nil {
return err
}
if err = c.app.ldb.Dump(dumpFile); err != nil {
if err = req.app.ldb.Dump(dumpFile); err != nil {
return err
}
@ -56,7 +56,7 @@ func fullsyncCommand(c *client) error {
dumpFile.Seek(0, os.SEEK_SET)
c.resp.writeBulkFrom(n, dumpFile)
req.resp.writeBulkFrom(n, dumpFile)
name := dumpFile.Name()
dumpFile.Close()
@ -68,8 +68,8 @@ func fullsyncCommand(c *client) error {
var reserveInfoSpace = make([]byte, 16)
func syncCommand(c *client) error {
args := c.args
func syncCommand(req *requestContext) error {
args := req.args
if len(args) != 2 {
return ErrCmdParams
}
@ -87,32 +87,32 @@ func syncCommand(c *client) error {
return ErrCmdParams
}
c.syncBuf.Reset()
req.syncBuf.Reset()
//reserve space to write master info
if _, err := c.syncBuf.Write(reserveInfoSpace); err != nil {
if _, err := req.syncBuf.Write(reserveInfoSpace); err != nil {
return err
}
m := &ledis.MasterInfo{logIndex, logPos}
if _, err := c.app.ldb.ReadEventsTo(m, &c.syncBuf); err != nil {
if _, err := req.app.ldb.ReadEventsTo(m, &req.syncBuf); err != nil {
return err
} else {
buf := c.syncBuf.Bytes()
buf := req.syncBuf.Bytes()
binary.BigEndian.PutUint64(buf[0:], uint64(m.LogFileIndex))
binary.BigEndian.PutUint64(buf[8:], uint64(m.LogPos))
if len(c.compressBuf) < snappy.MaxEncodedLen(len(buf)) {
c.compressBuf = make([]byte, snappy.MaxEncodedLen(len(buf)))
if len(req.compressBuf) < snappy.MaxEncodedLen(len(buf)) {
req.compressBuf = make([]byte, snappy.MaxEncodedLen(len(buf)))
}
if buf, err = snappy.Encode(c.compressBuf, buf); err != nil {
if buf, err = snappy.Encode(req.compressBuf, buf); err != nil {
return err
}
c.resp.writeBulk(buf)
req.resp.writeBulk(buf)
}
return nil

View File

@ -12,8 +12,8 @@ import (
var errScoreOverflow = errors.New("zset score overflow")
func zaddCommand(c *client) error {
args := c.args
func zaddCommand(req *requestContext) error {
args := req.args
if len(args) < 3 {
return ErrCmdParams
}
@ -36,66 +36,66 @@ func zaddCommand(c *client) error {
params[i].Member = args[2*i+1]
}
if n, err := c.db.ZAdd(key, params...); err != nil {
if n, err := req.db.ZAdd(key, params...); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func zcardCommand(c *client) error {
args := c.args
func zcardCommand(req *requestContext) error {
args := req.args
if len(args) != 1 {
return ErrCmdParams
}
if n, err := c.db.ZCard(args[0]); err != nil {
if n, err := req.db.ZCard(args[0]); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func zscoreCommand(c *client) error {
args := c.args
func zscoreCommand(req *requestContext) error {
args := req.args
if len(args) != 2 {
return ErrCmdParams
}
if s, err := c.db.ZScore(args[0], args[1]); err != nil {
if s, err := req.db.ZScore(args[0], args[1]); err != nil {
if err == ledis.ErrScoreMiss {
c.resp.writeBulk(nil)
req.resp.writeBulk(nil)
} else {
return err
}
} else {
c.resp.writeBulk(ledis.StrPutInt64(s))
req.resp.writeBulk(ledis.StrPutInt64(s))
}
return nil
}
func zremCommand(c *client) error {
args := c.args
func zremCommand(req *requestContext) error {
args := req.args
if len(args) < 2 {
return ErrCmdParams
}
if n, err := c.db.ZRem(args[0], args[1:]...); err != nil {
if n, err := req.db.ZRem(args[0], args[1:]...); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func zincrbyCommand(c *client) error {
args := c.args
func zincrbyCommand(req *requestContext) error {
args := req.args
if len(args) != 3 {
return ErrCmdParams
}
@ -107,10 +107,10 @@ func zincrbyCommand(c *client) error {
return err
}
if v, err := c.db.ZIncrBy(key, delta, args[2]); err != nil {
if v, err := req.db.ZIncrBy(key, delta, args[2]); err != nil {
return err
} else {
c.resp.writeBulk(ledis.StrPutInt64(v))
req.resp.writeBulk(ledis.StrPutInt64(v))
}
return nil
@ -178,8 +178,8 @@ func zparseScoreRange(minBuf []byte, maxBuf []byte) (min int64, max int64, err e
return
}
func zcountCommand(c *client) error {
args := c.args
func zcountCommand(req *requestContext) error {
args := req.args
if len(args) != 3 {
return ErrCmdParams
}
@ -190,77 +190,77 @@ func zcountCommand(c *client) error {
}
if min > max {
c.resp.writeInteger(0)
req.resp.writeInteger(0)
return nil
}
if n, err := c.db.ZCount(args[0], min, max); err != nil {
if n, err := req.db.ZCount(args[0], min, max); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func zrankCommand(c *client) error {
args := c.args
func zrankCommand(req *requestContext) error {
args := req.args
if len(args) != 2 {
return ErrCmdParams
}
if n, err := c.db.ZRank(args[0], args[1]); err != nil {
if n, err := req.db.ZRank(args[0], args[1]); err != nil {
return err
} else if n == -1 {
c.resp.writeBulk(nil)
req.resp.writeBulk(nil)
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func zrevrankCommand(c *client) error {
args := c.args
func zrevrankCommand(req *requestContext) error {
args := req.args
if len(args) != 2 {
return ErrCmdParams
}
if n, err := c.db.ZRevRank(args[0], args[1]); err != nil {
if n, err := req.db.ZRevRank(args[0], args[1]); err != nil {
return err
} else if n == -1 {
c.resp.writeBulk(nil)
req.resp.writeBulk(nil)
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func zremrangebyrankCommand(c *client) error {
args := c.args
func zremrangebyrankCommand(req *requestContext) error {
args := req.args
if len(args) != 3 {
return ErrCmdParams
}
key := args[0]
start, stop, err := zparseRange(c, args[1], args[2])
start, stop, err := zparseRange(req, args[1], args[2])
if err != nil {
return err
}
if n, err := c.db.ZRemRangeByRank(key, start, stop); err != nil {
if n, err := req.db.ZRemRangeByRank(key, start, stop); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func zremrangebyscoreCommand(c *client) error {
args := c.args
func zremrangebyscoreCommand(req *requestContext) error {
args := req.args
if len(args) != 3 {
return ErrCmdParams
}
@ -271,16 +271,16 @@ func zremrangebyscoreCommand(c *client) error {
return err
}
if n, err := c.db.ZRemRangeByScore(key, min, max); err != nil {
if n, err := req.db.ZRemRangeByScore(key, min, max); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func zparseRange(c *client, a1 []byte, a2 []byte) (start int, stop int, err error) {
func zparseRange(req *requestContext, a1 []byte, a2 []byte) (start int, stop int, err error) {
if start, err = strconv.Atoi(ledis.String(a1)); err != nil {
return
}
@ -292,15 +292,15 @@ func zparseRange(c *client, a1 []byte, a2 []byte) (start int, stop int, err erro
return
}
func zrangeGeneric(c *client, reverse bool) error {
args := c.args
func zrangeGeneric(req *requestContext, reverse bool) error {
args := req.args
if len(args) < 3 {
return ErrCmdParams
}
key := args[0]
start, stop, err := zparseRange(c, args[1], args[2])
start, stop, err := zparseRange(req, args[1], args[2])
if err != nil {
return err
}
@ -312,24 +312,24 @@ func zrangeGeneric(c *client, reverse bool) error {
withScores = true
}
if datas, err := c.db.ZRangeGeneric(key, start, stop, reverse); err != nil {
if datas, err := req.db.ZRangeGeneric(key, start, stop, reverse); err != nil {
return err
} else {
c.resp.writeScorePairArray(datas, withScores)
req.resp.writeScorePairArray(datas, withScores)
}
return nil
}
func zrangeCommand(c *client) error {
return zrangeGeneric(c, false)
func zrangeCommand(req *requestContext) error {
return zrangeGeneric(req, false)
}
func zrevrangeCommand(c *client) error {
return zrangeGeneric(c, true)
func zrevrangeCommand(req *requestContext) error {
return zrangeGeneric(req, true)
}
func zrangebyscoreGeneric(c *client, reverse bool) error {
args := c.args
func zrangebyscoreGeneric(req *requestContext, reverse bool) error {
args := req.args
if len(args) < 3 {
return ErrCmdParams
}
@ -383,59 +383,59 @@ func zrangebyscoreGeneric(c *client, reverse bool) error {
if offset < 0 {
//for ledis, if offset < 0, a empty will return
//so here we directly return a empty array
c.resp.writeArray([]interface{}{})
req.resp.writeArray([]interface{}{})
return nil
}
if datas, err := c.db.ZRangeByScoreGeneric(key, min, max, offset, count, reverse); err != nil {
if datas, err := req.db.ZRangeByScoreGeneric(key, min, max, offset, count, reverse); err != nil {
return err
} else {
c.resp.writeScorePairArray(datas, withScores)
req.resp.writeScorePairArray(datas, withScores)
}
return nil
}
func zrangebyscoreCommand(c *client) error {
return zrangebyscoreGeneric(c, false)
func zrangebyscoreCommand(req *requestContext) error {
return zrangebyscoreGeneric(req, false)
}
func zrevrangebyscoreCommand(c *client) error {
return zrangebyscoreGeneric(c, true)
func zrevrangebyscoreCommand(req *requestContext) error {
return zrangebyscoreGeneric(req, true)
}
func zclearCommand(c *client) error {
args := c.args
func zclearCommand(req *requestContext) error {
args := req.args
if len(args) != 1 {
return ErrCmdParams
}
if n, err := c.db.ZClear(args[0]); err != nil {
if n, err := req.db.ZClear(args[0]); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func zmclearCommand(c *client) error {
args := c.args
func zmclearCommand(req *requestContext) error {
args := req.args
if len(args) < 1 {
return ErrCmdParams
}
if n, err := c.db.ZMclear(args...); err != nil {
if n, err := req.db.ZMclear(args...); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil
}
func zexpireCommand(c *client) error {
args := c.args
func zexpireCommand(req *requestContext) error {
args := req.args
if len(args) != 2 {
return ErrCmdParams
}
@ -445,17 +445,17 @@ func zexpireCommand(c *client) error {
return err
}
if v, err := c.db.ZExpire(args[0], duration); err != nil {
if v, err := req.db.ZExpire(args[0], duration); err != nil {
return err
} else {
c.resp.writeInteger(v)
req.resp.writeInteger(v)
}
return nil
}
func zexpireAtCommand(c *client) error {
args := c.args
func zexpireAtCommand(req *requestContext) error {
args := req.args
if len(args) != 2 {
return ErrCmdParams
}
@ -465,40 +465,40 @@ func zexpireAtCommand(c *client) error {
return err
}
if v, err := c.db.ZExpireAt(args[0], when); err != nil {
if v, err := req.db.ZExpireAt(args[0], when); err != nil {
return err
} else {
c.resp.writeInteger(v)
req.resp.writeInteger(v)
}
return nil
}
func zttlCommand(c *client) error {
args := c.args
func zttlCommand(req *requestContext) error {
args := req.args
if len(args) != 1 {
return ErrCmdParams
}
if v, err := c.db.ZTTL(args[0]); err != nil {
if v, err := req.db.ZTTL(args[0]); err != nil {
return err
} else {
c.resp.writeInteger(v)
req.resp.writeInteger(v)
}
return nil
}
func zpersistCommand(c *client) error {
args := c.args
func zpersistCommand(req *requestContext) error {
args := req.args
if len(args) != 1 {
return ErrCmdParams
}
if n, err := c.db.ZPersist(args[0]); err != nil {
if n, err := req.db.ZPersist(args[0]); err != nil {
return err
} else {
c.resp.writeInteger(n)
req.resp.writeInteger(n)
}
return nil

View File

@ -8,7 +8,7 @@ import (
"strings"
)
type CommandFunc func(c *client) error
type CommandFunc func(req *requestContext) error
var regCmds = map[string]CommandFunc{}
@ -20,33 +20,33 @@ func register(name string, f CommandFunc) {
regCmds[name] = f
}
func pingCommand(c *client) error {
c.resp.writeStatus(PONG)
func pingCommand(req *requestContext) error {
req.resp.writeStatus(PONG)
return nil
}
func echoCommand(c *client) error {
if len(c.args) != 1 {
func echoCommand(req *requestContext) error {
if len(req.args) != 1 {
return ErrCmdParams
}
c.resp.writeBulk(c.args[0])
req.resp.writeBulk(req.args[0])
return nil
}
func selectCommand(c *client) error {
if len(c.args) != 1 {
func selectCommand(req *requestContext) error {
if len(req.args) != 1 {
return ErrCmdParams
}
if index, err := strconv.Atoi(ledis.String(c.args[0])); err != nil {
if index, err := strconv.Atoi(ledis.String(req.args[0])); err != nil {
return err
} else {
if db, err := c.ldb.Select(index); err != nil {
if db, err := req.ldb.Select(index); err != nil {
return err
} else {
c.db = db
c.resp.writeStatus(OK)
req.db = db
req.resp.writeStatus(OK)
}
}
return nil

200
server/request.go Normal file
View File

@ -0,0 +1,200 @@
package server
import (
"bytes"
"github.com/siddontang/go-log/log"
"github.com/siddontang/ledisdb/ledis"
"io"
"runtime"
"sync"
"time"
)
type responseWriter interface {
writeError(error)
writeStatus(string)
writeInteger(int64)
writeBulk([]byte)
writeArray([]interface{})
writeSliceArray([][]byte)
writeFVPairArray([]ledis.FVPair)
writeScorePairArray([]ledis.ScorePair, bool)
writeBulkFrom(int64, io.Reader)
flush()
}
type requestContext struct {
app *App
ldb *ledis.Ledis
db *ledis.DB
remoteAddr string
cmd string
args [][]byte
resp responseWriter
syncBuf bytes.Buffer
compressBuf []byte
finish chan interface{}
}
type requestHandler struct {
app *App
async bool
quit chan struct{}
jobs *sync.WaitGroup
reqs chan *requestContext
reqErr chan error
buf bytes.Buffer
}
func newRequestContext(app *App) *requestContext {
req := new(requestContext)
req.app = app
req.ldb = app.ldb
req.db, _ = app.ldb.Select(0) //use default db
req.compressBuf = make([]byte, 256)
req.finish = make(chan interface{}, 1)
return req
}
func newRequestHandler(app *App) *requestHandler {
hdl := new(requestHandler)
hdl.app = app
hdl.async = false
hdl.jobs = new(sync.WaitGroup)
hdl.quit = make(chan struct{})
hdl.reqs = make(chan *requestContext)
hdl.reqErr = make(chan error)
return hdl
}
func (h *requestHandler) asyncRun() {
if !h.async {
// todo ... not safe
h.async = true
go h.run()
}
}
func (h *requestHandler) close() {
if h.async {
close(h.quit)
h.jobs.Wait()
}
}
func (h *requestHandler) run() {
defer func() {
if e := recover(); e != nil {
buf := make([]byte, 4096)
n := runtime.Stack(buf, false)
buf = buf[0:n]
log.Fatal("request handler run panic %s:%v", buf, e)
}
}()
h.jobs.Add(1)
var req *requestContext
for !h.async {
select {
case req = <-h.reqs:
if req != nil {
h.performance(req)
}
case <-h.quit:
h.async = true
break
}
}
h.jobs.Done()
return
}
func (h *requestHandler) postRequest(req *requestContext) {
if h.async {
h.reqs <- req
} else {
h.performance(req)
}
<-req.finish
}
func (h *requestHandler) performance(req *requestContext) {
var err error
start := time.Now()
if len(req.cmd) == 0 {
err = ErrEmptyCommand
} else if exeCmd, ok := regCmds[req.cmd]; !ok {
err = ErrNotFound
} else {
go func() {
h.reqErr <- exeCmd(req)
}()
err = <-h.reqErr
}
duration := time.Since(start)
if h.app.access != nil {
fullCmd := h.catGenericCommand(req)
cost := duration.Nanoseconds() / 1000000
h.app.access.Log(req.remoteAddr, cost, fullCmd[:256], err)
}
if err != nil {
req.resp.writeError(err)
}
req.resp.flush()
req.finish <- nil
return
}
// func (h *requestHandler) catFullCommand(req *requestContext) []byte {
//
// // if strings.HasSuffix(cmd, "expire") {
// // catExpireCommand(c, buffer)
// // } else {
// // catGenericCommand(c, buffer)
// // }
//
// return h.catGenericCommand(req)
// }
func (h *requestHandler) catGenericCommand(req *requestContext) []byte {
buffer := h.buf
buffer.Reset()
buffer.Write([]byte(req.cmd))
nargs := len(req.args)
for i, arg := range req.args {
buffer.Write(arg)
if i != nargs-1 {
buffer.WriteByte(' ')
}
}
return buffer.Bytes()
}