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//
// sfive
//
// sfive - spreadspace streaming statistics suite is a generic
// statistic collection tool for streaming server infrastuctures.
// The system collects and stores meta data like number of views
// and throughput from a number of streaming servers and stores
// it in a global data store.
// The data acquisition is designed to be generic and extensible in
// order to support different streaming software.
// sfive also contains tools and applications to filter and visualize
// live and recorded data.
//
//
// Copyright (C) 2014-2017 Christian Pointner <equinox@spreadspace.org>
// Markus Grüneis <gimpf@gimpf.org>
//
// This file is part of sfive.
//
// sfive is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License version 3
// as published by the Free Software Foundation.
//
// sfive is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with sfive. If not, see <http://www.gnu.org/licenses/>.
//
package sfive
import (
"bytes"
"context"
"net"
"strings"
)
const (
PipegramMessageSizeLimit = 1024 * 1024
)
func (srv *Server) pipegramRun() {
buffer := make([]byte, PipegramMessageSizeLimit)
for {
n, _, err := srv.interfaces.pipegram.ReadFrom(buffer)
if err != nil {
if strings.Contains(err.Error(), "use of closed network connection") { // TODO: is this really the best way to do this?
return
}
s5l.Printf("srv|pgram: read() failed: %v", err)
continue
}
data := buffer[0:n]
update, err := NewStatelessDecoder(bytes.NewReader(data)).Decode()
if err != nil {
s5l.Printf("srv|pgram: decoding data message failed: %v\n", err)
continue
}
if err = srv.Ingest(update); err != nil {
s5l.Printf("srv|pgram: storing data failed: %v\n", err)
}
}
}
func (srv *Server) pipegramStop(ctx context.Context) (err error) {
if srv.interfaces.pipegram == nil {
return nil
}
s5l.Printf("srv|pgram: shutting down")
return srv.interfaces.pipegram.Close()
}
func (srv *Server) ServePipegram(cfg PipegramInterfaceConfig) (err error) {
if srv.interfaces.pipegram, err = net.ListenPacket("unixgram", cfg.ListenPath); err != nil {
s5l.Printf("srv|pgram: listen() failed: %v", err)
return
}
s5l.Printf("srv|pgram: listening on '%s'", cfg.ListenPath)
srv.wgInterfaces.Add(1)
go func() {
defer srv.wgInterfaces.Done()
defer s5l.Println("srv|pgram: interface stopped listening")
srv.pipegramRun()
}()
return
}
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