forked from pingcap/tidb
/
conn.go
84 lines (72 loc) · 2.22 KB
/
conn.go
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// Copyright 2015 Reborndb Org. All Rights Reserved.
// Licensed under the MIT (MIT-LICENSE.txt) license.
//
// Copyright 2016 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
package tikv
import (
"bufio"
"net"
"time"
"github.com/juju/errors"
"github.com/ngaut/deadline"
)
const defaultBufSize = 4 * 1024
// Conn is a simple wrapper of net.Conn.
type Conn struct {
addr string
nc net.Conn
closed bool
r *bufio.Reader
w *bufio.Writer
netTimeout int //second
}
// NewConnection creates a Conn with network timeout..
func NewConnection(addr string, netTimeout int) (*Conn, error) {
return NewConnectionWithSize(addr, netTimeout, defaultBufSize, defaultBufSize)
}
// NewConnectionWithSize creates a Conn with network timeout and read/write buffer size.
func NewConnectionWithSize(addr string, netTimeout int, readSize int, writeSize int) (*Conn, error) {
conn, err := net.DialTimeout("tcp", addr, time.Duration(netTimeout)*time.Second)
if err != nil {
return nil, errors.Trace(err)
}
return &Conn{
addr: addr,
nc: conn,
closed: false,
r: bufio.NewReaderSize(deadline.NewDeadlineReader(conn, time.Duration(netTimeout)*time.Second), readSize),
w: bufio.NewWriterSize(deadline.NewDeadlineWriter(conn, time.Duration(netTimeout)*time.Second), writeSize),
netTimeout: netTimeout,
}, nil
}
// Flush writes buffered data to net.Conn.
func (c *Conn) Flush() error {
return c.w.Flush()
}
// Write writes data to the bufio.Writer.
func (c *Conn) Write(p []byte) (int, error) {
return c.w.Write(p)
}
// BufioReader returns a bufio.Reader for writing.
func (c *Conn) BufioReader() *bufio.Reader {
return c.r
}
// Close closes the net.Conn.
func (c *Conn) Close() {
if c.closed {
return
}
c.closed = true
c.nc.Close()
}