|
- package pool
-
- import (
- "bufio"
- "context"
- "net"
- "sync/atomic"
- "time"
-
- "github.com/go-redis/redis/v8/internal/proto"
- )
-
- var noDeadline = time.Time{}
-
- type Conn struct {
- usedAt int64 // atomic
- netConn net.Conn
-
- rd *proto.Reader
- bw *bufio.Writer
- wr *proto.Writer
-
- Inited bool
- pooled bool
- createdAt time.Time
- }
-
- func NewConn(netConn net.Conn) *Conn {
- cn := &Conn{
- netConn: netConn,
- createdAt: time.Now(),
- }
- cn.rd = proto.NewReader(netConn)
- cn.bw = bufio.NewWriter(netConn)
- cn.wr = proto.NewWriter(cn.bw)
- cn.SetUsedAt(time.Now())
- return cn
- }
-
- func (cn *Conn) UsedAt() time.Time {
- unix := atomic.LoadInt64(&cn.usedAt)
- return time.Unix(unix, 0)
- }
-
- func (cn *Conn) SetUsedAt(tm time.Time) {
- atomic.StoreInt64(&cn.usedAt, tm.Unix())
- }
-
- func (cn *Conn) SetNetConn(netConn net.Conn) {
- cn.netConn = netConn
- cn.rd.Reset(netConn)
- cn.bw.Reset(netConn)
- }
-
- func (cn *Conn) Write(b []byte) (int, error) {
- return cn.netConn.Write(b)
- }
-
- func (cn *Conn) RemoteAddr() net.Addr {
- if cn.netConn != nil {
- return cn.netConn.RemoteAddr()
- }
- return nil
- }
-
- func (cn *Conn) WithReader(ctx context.Context, timeout time.Duration, fn func(rd *proto.Reader) error) error {
- if err := cn.netConn.SetReadDeadline(cn.deadline(ctx, timeout)); err != nil {
- return err
- }
- return fn(cn.rd)
- }
-
- func (cn *Conn) WithWriter(
- ctx context.Context, timeout time.Duration, fn func(wr *proto.Writer) error,
- ) error {
- if err := cn.netConn.SetWriteDeadline(cn.deadline(ctx, timeout)); err != nil {
- return err
- }
-
- if cn.bw.Buffered() > 0 {
- cn.bw.Reset(cn.netConn)
- }
-
- if err := fn(cn.wr); err != nil {
- return err
- }
-
- return cn.bw.Flush()
- }
-
- func (cn *Conn) Close() error {
- return cn.netConn.Close()
- }
-
- func (cn *Conn) deadline(ctx context.Context, timeout time.Duration) time.Time {
- tm := time.Now()
- cn.SetUsedAt(tm)
-
- if timeout > 0 {
- tm = tm.Add(timeout)
- }
-
- if ctx != nil {
- deadline, ok := ctx.Deadline()
- if ok {
- if timeout == 0 {
- return deadline
- }
- if deadline.Before(tm) {
- return deadline
- }
- return tm
- }
- }
-
- if timeout > 0 {
- return tm
- }
-
- return noDeadline
- }
|