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conn.go
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conn.go
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package pool
import "net"
// PoolConn is a wrapper around net.Conn to modify the the behavior of
// net.Conn's Close() method.
type PoolConn struct {
net.Conn
c *channelPool
unusable bool
}
// Close() puts the given connects back to the pool instead of closing it.
func (p PoolConn) Close() error {
if p.unusable {
if p.Conn != nil {
return p.Conn.Close()
}
return nil
}
return p.c.put(p.Conn)
}
// MarkUnusable() marks the connection not usable any more, to let the pool close it instead of returning it to pool.
func (p *PoolConn) MarkUnusable() {
p.unusable = true
}
// newConn wraps a standard net.Conn to a poolConn net.Conn.
func (c *channelPool) wrapConn(conn net.Conn) net.Conn {
p := &PoolConn{c: c}
p.Conn = conn
return p
}