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statistics.go
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statistics.go
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/*
udpserial - lightweight bridge for serial ports over UDP packets
Copyright (C) 2022 Giacomo De Lazzari
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
*/
package main
import (
"sync"
"time"
)
// PortStatistics : represent the statistics for one port
type PortStatistics struct {
UDP2SerialRate int
Serial2UDPRate int
LostPackets int
Errors int
UDP2SerialCounter int
Serial2UDPCounter int
}
// PublicPortStatistics : represent the public information about a port statistics
type PublicPortStatistics struct {
UDP2SerialRate int `json:"udp2serialRate"`
Serial2UDPRate int `json:"serial2udpRate"`
LostPackets int `json:"lostPackets"`
Errors int `json:"errors"`
}
// Statistics : represent statistics for all ports
type Statistics struct {
Ports map[string]*PortStatistics
PortsMutex sync.Mutex
}
// PublicStatistics : represent the public statistics information
type PublicStatistics struct {
Ports map[string]PublicPortStatistics `json:"ports"`
}
func getPublicStatistics(stats *Statistics) PublicStatistics {
result := PublicStatistics{}
result.Ports = make(map[string]PublicPortStatistics)
stats.PortsMutex.Lock()
for portName := range stats.Ports {
result.Ports[portName] = PublicPortStatistics{
stats.Ports[portName].UDP2SerialRate,
stats.Ports[portName].Serial2UDPRate,
stats.Ports[portName].LostPackets,
stats.Ports[portName].Errors,
}
}
stats.PortsMutex.Unlock()
return result
}
func statisticsThread(wg *sync.WaitGroup, stats *Statistics) {
defer wg.Done()
for {
time.Sleep(time.Second * 1)
stats.PortsMutex.Lock()
for portName := range stats.Ports {
stats.Ports[portName].Serial2UDPRate = stats.Ports[portName].Serial2UDPCounter
stats.Ports[portName].UDP2SerialRate = stats.Ports[portName].UDP2SerialCounter
stats.Ports[portName].Serial2UDPCounter = 0
stats.Ports[portName].UDP2SerialCounter = 0
}
stats.PortsMutex.Unlock()
}
}