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