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