66 lines
1.2 KiB
Go
66 lines
1.2 KiB
Go
// Copyright (c) 2016 Arista Networks, Inc.
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// Use of this source code is governed by the Apache License 2.0
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// that can be found in the COPYING file.
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package main
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import (
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"bytes"
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"net"
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"github.com/aristanetworks/glog"
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)
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type telnetClient struct {
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addr string
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conn net.Conn
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}
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func newTelnetClient(addr string) OpenTSDBConn {
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return &telnetClient{
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addr: addr,
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}
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}
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func readErrors(conn net.Conn) {
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var buf [4096]byte
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for {
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// TODO: We should add a buffer to read line-by-line properly instead
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// of using a fixed-size buffer and splitting on newlines manually.
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n, err := conn.Read(buf[:])
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if n == 0 {
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return
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} else if n > 0 {
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for _, line := range bytes.Split(buf[:n], []byte{'\n'}) {
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if s := string(line); s != "" {
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glog.Info("tsd replied: ", s)
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}
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}
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}
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if err != nil {
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return
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}
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}
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}
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func (c *telnetClient) Put(d *DataPoint) error {
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return c.PutBytes([]byte(d.String()))
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}
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func (c *telnetClient) PutBytes(d []byte) error {
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var err error
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if c.conn == nil {
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c.conn, err = net.Dial("tcp", c.addr)
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if err != nil {
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return err
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}
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go readErrors(c.conn)
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}
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_, err = c.conn.Write(d)
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if err != nil {
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c.conn.Close()
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c.conn = nil
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}
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return err
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}
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