frp/server/metric.go

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// Copyright 2017 fatedier, fatedier@gmail.com
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package server
import (
"sync"
"time"
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"github.com/fatedier/frp/models/config"
"github.com/fatedier/frp/utils/log"
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"github.com/fatedier/frp/utils/metric"
)
const (
ReserveDays = 7
)
var globalStats *ServerStatistics
type ServerStatistics struct {
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TotalTrafficIn metric.DateCounter
TotalTrafficOut metric.DateCounter
CurConns metric.Counter
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// counter for clients
ClientCounts metric.Counter
// counter for proxy types
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ProxyTypeCounts map[string]metric.Counter
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// statistics for different proxies
// key is proxy name
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ProxyStatistics map[string]*ProxyStatistics
mu sync.Mutex
}
type ProxyStatistics struct {
Name string
ProxyType string
TrafficIn metric.DateCounter
TrafficOut metric.DateCounter
CurConns metric.Counter
LastStartTime time.Time
LastCloseTime time.Time
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}
func init() {
globalStats = &ServerStatistics{
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TotalTrafficIn: metric.NewDateCounter(ReserveDays),
TotalTrafficOut: metric.NewDateCounter(ReserveDays),
CurConns: metric.NewCounter(),
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ClientCounts: metric.NewCounter(),
ProxyTypeCounts: make(map[string]metric.Counter),
ProxyStatistics: make(map[string]*ProxyStatistics),
}
go func() {
for {
time.Sleep(12 * time.Hour)
log.Debug("start to clear useless proxy statistics data...")
StatsClearUselessInfo()
log.Debug("finish to clear useless proxy statistics data")
}
}()
}
func StatsClearUselessInfo() {
// To check if there are proxies that closed than 7 days and drop them.
globalStats.mu.Lock()
defer globalStats.mu.Unlock()
for name, data := range globalStats.ProxyStatistics {
if !data.LastCloseTime.IsZero() && time.Since(data.LastCloseTime) > time.Duration(7*24)*time.Hour {
delete(globalStats.ProxyStatistics, name)
log.Trace("clear proxy [%s]'s statistics data, lastCloseTime: [%s]", name, data.LastCloseTime.String())
}
}
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}
func StatsNewClient() {
if config.ServerCommonCfg.DashboardPort != 0 {
globalStats.ClientCounts.Inc(1)
}
}
func StatsCloseClient() {
if config.ServerCommonCfg.DashboardPort != 0 {
globalStats.ClientCounts.Dec(1)
}
}
func StatsNewProxy(name string, proxyType string) {
if config.ServerCommonCfg.DashboardPort != 0 {
globalStats.mu.Lock()
defer globalStats.mu.Unlock()
counter, ok := globalStats.ProxyTypeCounts[proxyType]
if !ok {
counter = metric.NewCounter()
}
counter.Inc(1)
globalStats.ProxyTypeCounts[proxyType] = counter
proxyStats, ok := globalStats.ProxyStatistics[name]
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if !(ok && proxyStats.ProxyType == proxyType) {
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proxyStats = &ProxyStatistics{
Name: name,
ProxyType: proxyType,
CurConns: metric.NewCounter(),
TrafficIn: metric.NewDateCounter(ReserveDays),
TrafficOut: metric.NewDateCounter(ReserveDays),
LastStartTime: time.Now(),
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}
globalStats.ProxyStatistics[name] = proxyStats
}
}
}
func StatsCloseProxy(proxyName string, proxyType string) {
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if config.ServerCommonCfg.DashboardPort != 0 {
globalStats.mu.Lock()
defer globalStats.mu.Unlock()
if counter, ok := globalStats.ProxyTypeCounts[proxyType]; ok {
counter.Dec(1)
}
if proxyStats, ok := globalStats.ProxyStatistics[proxyName]; ok {
proxyStats.LastCloseTime = time.Now()
}
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}
}
func StatsOpenConnection(name string) {
if config.ServerCommonCfg.DashboardPort != 0 {
globalStats.CurConns.Inc(1)
globalStats.mu.Lock()
defer globalStats.mu.Unlock()
proxyStats, ok := globalStats.ProxyStatistics[name]
if ok {
proxyStats.CurConns.Inc(1)
globalStats.ProxyStatistics[name] = proxyStats
}
}
}
func StatsCloseConnection(name string) {
if config.ServerCommonCfg.DashboardPort != 0 {
globalStats.CurConns.Dec(1)
globalStats.mu.Lock()
defer globalStats.mu.Unlock()
proxyStats, ok := globalStats.ProxyStatistics[name]
if ok {
proxyStats.CurConns.Dec(1)
globalStats.ProxyStatistics[name] = proxyStats
}
}
}
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func StatsAddTrafficIn(name string, trafficIn int64) {
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if config.ServerCommonCfg.DashboardPort != 0 {
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globalStats.TotalTrafficIn.Inc(trafficIn)
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globalStats.mu.Lock()
defer globalStats.mu.Unlock()
proxyStats, ok := globalStats.ProxyStatistics[name]
if ok {
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proxyStats.TrafficIn.Inc(trafficIn)
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globalStats.ProxyStatistics[name] = proxyStats
}
}
}
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func StatsAddTrafficOut(name string, trafficOut int64) {
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if config.ServerCommonCfg.DashboardPort != 0 {
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globalStats.TotalTrafficOut.Inc(trafficOut)
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globalStats.mu.Lock()
defer globalStats.mu.Unlock()
proxyStats, ok := globalStats.ProxyStatistics[name]
if ok {
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proxyStats.TrafficOut.Inc(trafficOut)
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globalStats.ProxyStatistics[name] = proxyStats
}
}
}
// Functions for getting server stats.
type ServerStats struct {
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TotalTrafficIn int64
TotalTrafficOut int64
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CurConns int64
ClientCounts int64
ProxyTypeCounts map[string]int64
}
func StatsGetServer() *ServerStats {
globalStats.mu.Lock()
defer globalStats.mu.Unlock()
s := &ServerStats{
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TotalTrafficIn: globalStats.TotalTrafficIn.TodayCount(),
TotalTrafficOut: globalStats.TotalTrafficOut.TodayCount(),
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CurConns: globalStats.CurConns.Count(),
ClientCounts: globalStats.ClientCounts.Count(),
ProxyTypeCounts: make(map[string]int64),
}
for k, v := range globalStats.ProxyTypeCounts {
s.ProxyTypeCounts[k] = v.Count()
}
return s
}
type ProxyStats struct {
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Name string
Type string
TodayTrafficIn int64
TodayTrafficOut int64
CurConns int64
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}
func StatsGetProxiesByType(proxyType string) []*ProxyStats {
res := make([]*ProxyStats, 0)
globalStats.mu.Lock()
defer globalStats.mu.Unlock()
for name, proxyStats := range globalStats.ProxyStatistics {
if proxyStats.ProxyType != proxyType {
continue
}
ps := &ProxyStats{
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Name: name,
Type: proxyStats.ProxyType,
TodayTrafficIn: proxyStats.TrafficIn.TodayCount(),
TodayTrafficOut: proxyStats.TrafficOut.TodayCount(),
CurConns: proxyStats.CurConns.Count(),
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}
res = append(res, ps)
}
return res
}
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type ProxyTrafficInfo struct {
Name string
TrafficIn []int64
TrafficOut []int64
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}
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func StatsGetProxyTraffic(name string) (res *ProxyTrafficInfo) {
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globalStats.mu.Lock()
defer globalStats.mu.Unlock()
proxyStats, ok := globalStats.ProxyStatistics[name]
if ok {
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res = &ProxyTrafficInfo{
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Name: name,
}
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res.TrafficIn = proxyStats.TrafficIn.GetLastDaysCount(ReserveDays)
res.TrafficOut = proxyStats.TrafficOut.GetLastDaysCount(ReserveDays)
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}
return
}