64 lines
1.4 KiB
Go
64 lines
1.4 KiB
Go
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package graphite
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import (
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"bufio"
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"io"
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"log"
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"net"
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)
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// TcpGraphiteServer processes Graphite data received over TCP connections.
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type TcpGraphiteServer struct {
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GraphiteServer
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}
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// NewTcpGraphiteServer returns a new instance of a TcpGraphiteServer.
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func NewTcpGraphiteServer(d dataSink) *TcpGraphiteServer {
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t := TcpGraphiteServer{}
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t.sink = d
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return &t
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}
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// Start instructs the TcpGraphiteServer to start processing Graphite data
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// on the given interface. iface must be in the form host:port
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func (t *TcpGraphiteServer) Start(iface string) error {
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if iface == "" { // Make sure we have an address
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return ErrBindAddressRequired
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} else if t.Database == "" { // Make sure they have a database
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return ErrDatabaseNotSpecified
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} else if t.sink == nil { // Make sure they specified a backend sink
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return ErrServerNotSpecified
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}
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ln, err := net.Listen("tcp", iface)
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if err != nil {
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return err
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}
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go func() {
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for {
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conn, err := ln.Accept()
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if err != nil {
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log.Println("erorr accepting TCP connection", err.Error())
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continue
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}
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go t.handleConnection(conn)
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}
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}()
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return nil
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}
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func (t *TcpGraphiteServer) handleConnection(conn net.Conn) {
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defer conn.Close()
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reader := bufio.NewReader(conn)
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for {
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err := t.handleMessage(reader)
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if err != nil {
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if err == io.EOF {
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return
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} else {
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log.Println("ignoring error reading graphite data over TCP", err.Error())
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}
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}
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}
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}
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