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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 (
"errors"
"runtime"
"sync"
)
type ingestToken struct {
update *UpdateFull
response chan error
}
type ingestManyToken struct {
updates []*UpdateFull
response chan error
}
type Server struct {
store *Store
numWorker int
anonymization AnonymizationAlgo
geoip GeoIPLookup
quit chan bool
done *sync.WaitGroup
ingestChan chan ingestToken
ingestManyChan chan ingestManyToken
}
func (srv Server) transform(update *UpdateFull) *UpdateFull {
bytesSentTotal := uint(0)
clients := []Client{}
for _, client := range update.Data.Clients {
bytesSentTotal += client.BytesSent
if srv.geoip != nil {
if info, err := srv.geoip.Lookup(client.IP); err != nil {
s5l.Printf("server|transform: Geo-IP lookup failed: %v", err)
} else {
client.GeoInfo = *info
}
}
if srv.anonymization != nil {
if aIP, err := srv.anonymization.Anonymize(client.IP); err != nil {
s5l.Printf("server|transform: anonymization failed: %v", err)
} else {
client.IP = aIP
}
}
clients = append(clients, client)
}
update.Data.Clients = clients
if uint(len(update.Data.Clients)) > update.Data.ClientCount {
if update.Data.ClientCount > 0 {
s5l.Printf("server|transform: fixing client-count: %d -> %d", update.Data.ClientCount, len(update.Data.Clients))
}
update.Data.ClientCount = uint(len(update.Data.Clients))
}
if bytesSentTotal > update.Data.BytesSent {
if update.Data.BytesSent > 0 {
s5l.Printf("server|transform: fixing bytes-sent: %d -> %d", update.Data.BytesSent, bytesSentTotal)
}
update.Data.BytesSent = bytesSentTotal
}
return update
}
func (srv Server) transformMany(updates []*UpdateFull) {
for _, update := range updates {
srv.transform(update)
}
}
func (srv Server) ingestWorker(idx int) {
for {
select {
case <-srv.quit:
return
case token := <-srv.ingestChan:
srv.transform(token.update)
token.response <- srv.store.Append(token.update)
case token := <-srv.ingestManyChan:
srv.transformMany(token.updates)
token.response <- srv.store.AppendMany(token.updates)
}
}
}
func (srv Server) Ingest(update *UpdateFull) error {
token := ingestToken{update: update, response: make(chan error, 1)}
defer close(token.response)
srv.ingestChan <- token
return <-token.response
}
func (srv Server) IngestMany(updates []*UpdateFull) error {
token := ingestManyToken{updates: updates, response: make(chan error, 1)}
defer close(token.response)
srv.ingestManyChan <- token
return <-token.response
}
func (srv Server) Close() {
s5l.Printf("server: shutting down")
close(srv.quit)
srv.done.Wait()
close(srv.ingestChan)
close(srv.ingestManyChan)
srv.store.Close()
s5l.Printf("server: finished")
}
func NewServer(cfg SrvConfig) (srv *Server, err error) {
// TODO: read configuration and create instance with correct settings
srv = &Server{}
if srv.store, err = NewStore(cfg.Store); err != nil {
return
}
if cfg.Transform.Anonymize {
if srv.anonymization, err = NewCryptopanAnonymization(cfg.Transform.AnonKeyfile); err != nil {
err = errors.New("failed to initialize IP address anonymization: " + err.Error())
return
}
s5l.Printf("server|transform: using IP address anonymization: %s", srv.anonymization)
}
if cfg.Transform.GeoipDB != "" {
if srv.geoip, err = NewMaxMindGeoIP2(cfg.Transform.GeoipDB); err != nil {
err = errors.New("failed to initialize Geo-IP Lookup: " + err.Error())
return
}
s5l.Printf("server|transform: using Geo-IP Lookup: %s", srv.geoip)
}
srv.numWorker = runtime.NumCPU() // TODO: make this configurable
srv.quit = make(chan bool)
srv.done = &sync.WaitGroup{}
srv.ingestChan = make(chan ingestToken, srv.numWorker)
srv.ingestManyChan = make(chan ingestManyToken, srv.numWorker)
for i := 0; i < srv.numWorker; i = i + 1 {
srv.done.Add(1)
go func(idx int) {
defer srv.done.Done()
srv.ingestWorker(idx)
}(i)
}
s5l.Printf("server: started")
return
}
|
