/
response.go
90 lines (78 loc) · 2.3 KB
/
response.go
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package redis
import (
"bytes"
"fmt"
"io"
"strconv"
"time"
)
type ResponseWriter interface {
Error(string, ...interface{}) (int, error)
Text(string, ...interface{}) (int, error)
Binary([]byte) (int, error)
Write([]byte) (int, error)
}
type responser struct {
writer io.Writer
req Request
}
func (resp *responser) Error(msg string, args ...interface{}) (int, error) {
content := fmt.Sprintf(msg, args...)
cmd := fmt.Sprintf("-%s\r\n", content)
defer func() {
if logger := resp.req.logger; logger != nil {
logger.Notice("redis cmd:%s, arg:%v, addr:%s, cost:%v, type:err, reply:%s", resp.req.Cmd, resp.req.Args, resp.req.remote, time.Now().Sub(resp.req.ts), content)
}
}()
return resp.writer.Write([]byte(cmd))
}
func (resp *responser) Text(msg string, args ...interface{}) (int, error) {
content := fmt.Sprintf(msg, args...)
cmd := fmt.Sprintf("+%s\r\n", content)
defer func() {
if logger := resp.req.logger; logger != nil {
logger.Notice("redis cmd:%s, arg:%v, addr:%s, cost:%v, type:text, reply:%s", resp.req.Cmd, resp.req.Args, resp.req.remote, time.Now().Sub(resp.req.ts), content)
}
}()
return resp.writer.Write([]byte(cmd))
}
func (resp *responser) Binary(msg []byte) (int, error) {
if len(msg) != 0 {
var sb bytes.Buffer
sb.WriteByte('$')
sb.WriteString(strconv.FormatInt(int64(len(msg)), 10))
sb.WriteString("\r\n")
sb.Write(msg)
sb.WriteString("\r\n")
defer func() {
if logger := resp.req.logger; logger != nil {
logger.Notice("redis cmd:%s, arg:%v, addr:%s, cost:%v, type:bulkstr, reply:%s", resp.req.Cmd, resp.req.Args, resp.req.remote, time.Now().Sub(resp.req.ts), string(msg))
}
}()
return resp.writer.Write(sb.Bytes())
}
defer func() {
if logger := resp.req.logger; logger != nil {
logger.Notice("redis cmd:%s, arg:%v, addr:%s, cost:%v, type:null bulkstr, reply:%s", resp.req.Cmd, resp.req.Args, resp.req.remote, time.Now().Sub(resp.req.ts), "numm bulk string")
}
}()
return resp.writer.Write([]byte{'$', '-', '1', '\r', '\n'})
}
func (resp *responser) Write(bins []byte) (int, error) {
if len(bins) == 0 {
return 0, nil
}
var (
target = len(bins)
writen int
)
for writen < target {
cnt, err := resp.writer.Write(bins)
writen += cnt
if err == nil || err == io.ErrShortWrite {
continue
}
return writen, err
}
return target, nil
}