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// Copyright 2013 Beego Authors
// Copyright 2014 The Macaron Authors
//
// 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 toolbox
import (
"encoding/json"
"fmt"
"io"
"strings"
"sync"
"time"
)
// Statistics struct
type Statistics struct {
RequestUrl string
RequestNum int64
MinTime time.Duration
MaxTime time.Duration
TotalTime time.Duration
}
// UrlMap contains several statistics struct to log different data
type UrlMap struct {
lock sync.RWMutex
LengthLimit int // limit the urlmap's length if it's equal to 0 there's no limit
urlmap map[string]map[string]*Statistics
}
// add statistics task.
// it needs request method, request url and statistics time duration
func (m *UrlMap) AddStatistics(requestMethod, requestUrl string, requesttime time.Duration) {
m.lock.Lock()
defer m.lock.Unlock()
if method, ok := m.urlmap[requestUrl]; ok {
if s, ok := method[requestMethod]; ok {
s.RequestNum += 1
if s.MaxTime < requesttime {
s.MaxTime = requesttime
}
if s.MinTime > requesttime {
s.MinTime = requesttime
}
s.TotalTime += requesttime
} else {
nb := &Statistics{
RequestUrl: requestUrl,
RequestNum: 1,
MinTime: requesttime,
MaxTime: requesttime,
TotalTime: requesttime,
}
m.urlmap[requestUrl][requestMethod] = nb
}
} else {
if m.LengthLimit > 0 && m.LengthLimit <= len(m.urlmap) {
return
}
methodmap := make(map[string]*Statistics)
nb := &Statistics{
RequestUrl: requestUrl,
RequestNum: 1,
MinTime: requesttime,
MaxTime: requesttime,
TotalTime: requesttime,
}
methodmap[requestMethod] = nb
m.urlmap[requestUrl] = methodmap
}
}
// put url statistics result in io.Writer
func (m *UrlMap) GetMap(w io.Writer) {
m.lock.RLock()
defer m.lock.RUnlock()
sep := fmt.Sprintf("+%s+%s+%s+%s+%s+%s+%s+\n", strings.Repeat("-", 51), strings.Repeat("-", 12),
strings.Repeat("-", 18), strings.Repeat("-", 18), strings.Repeat("-", 18), strings.Repeat("-", 18), strings.Repeat("-", 18))
fmt.Fprintf(w, sep)
fmt.Fprintf(w, "| % -50s| % -10s | % -16s | % -16s | % -16s | % -16s | % -16s |\n", "Request URL", "Method", "Times", "Total Used(s)", "Max Used(μs)", "Min Used(μs)", "Avg Used(μs)")
fmt.Fprintf(w, sep)
for k, v := range m.urlmap {
for kk, vv := range v {
fmt.Fprintf(w, "| % -50s| % -10s | % 16d | % 16f | % 16.6f | % 16.6f | % 16.6f |\n", k,
kk, vv.RequestNum, vv.TotalTime.Seconds(), float64(vv.MaxTime.Nanoseconds())/1000,
float64(vv.MinTime.Nanoseconds())/1000, float64(time.Duration(int64(vv.TotalTime)/vv.RequestNum).Nanoseconds())/1000,
)
}
}
fmt.Fprintf(w, sep)
}
type URLMapInfo struct {
URL string `json:"url"`
Method string `json:"method"`
Times int64 `json:"times"`
TotalUsed float64 `json:"total_used"`
MaxUsed float64 `json:"max_used"`
MinUsed float64 `json:"min_used"`
AvgUsed float64 `json:"avg_used"`
}
func (m *UrlMap) JSON(w io.Writer) {
infos := make([]*URLMapInfo, 0, len(m.urlmap))
for k, v := range m.urlmap {
for kk, vv := range v {
infos = append(infos, &URLMapInfo{
URL: k,
Method: kk,
Times: vv.RequestNum,
TotalUsed: vv.TotalTime.Seconds(),
MaxUsed: float64(vv.MaxTime.Nanoseconds()) / 1000,
MinUsed: float64(vv.MinTime.Nanoseconds()) / 1000,
AvgUsed: float64(time.Duration(int64(vv.TotalTime)/vv.RequestNum).Nanoseconds()) / 1000,
})
}
}
if err := json.NewEncoder(w).Encode(infos); err != nil {
panic("URLMap.JSON: " + err.Error())
}
}
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