mirror of
https://codeberg.org/forgejo/forgejo.git
synced 2024-12-05 08:12:59 +01:00
3db3f5daae
- Updated all tool dependencies to latest versions - Add Makefile to `swagger` files because it specifies `go-swagger` version - Fix lint
124 lines
3.3 KiB
Go
124 lines
3.3 KiB
Go
// Copyright 2021 The Gitea Authors. All rights reserved.
|
|
// SPDX-License-Identifier: MIT
|
|
|
|
package routing
|
|
|
|
import (
|
|
"context"
|
|
"net/http"
|
|
"sync"
|
|
"time"
|
|
|
|
"code.gitea.io/gitea/modules/graceful"
|
|
"code.gitea.io/gitea/modules/process"
|
|
)
|
|
|
|
// Event indicates when the printer is triggered
|
|
type Event int
|
|
|
|
const (
|
|
// StartEvent at the beginning of a request
|
|
StartEvent Event = iota
|
|
|
|
// StillExecutingEvent the request is still executing
|
|
StillExecutingEvent
|
|
|
|
// EndEvent the request has ended (either completed or failed)
|
|
EndEvent
|
|
)
|
|
|
|
// Printer is used to output the log for a request
|
|
type Printer func(trigger Event, record *requestRecord)
|
|
|
|
type requestRecordsManager struct {
|
|
print Printer
|
|
|
|
lock sync.Mutex
|
|
|
|
requestRecords map[uint64]*requestRecord
|
|
count uint64
|
|
}
|
|
|
|
func (manager *requestRecordsManager) startSlowQueryDetector(threshold time.Duration) {
|
|
go graceful.GetManager().RunWithShutdownContext(func(ctx context.Context) {
|
|
ctx, _, finished := process.GetManager().AddTypedContext(ctx, "Service: SlowQueryDetector", process.SystemProcessType, true)
|
|
defer finished()
|
|
// This go-routine checks all active requests every second.
|
|
// If a request has been running for a long time (eg: /user/events), we also print a log with "still-executing" message
|
|
// After the "still-executing" log is printed, the record will be removed from the map to prevent from duplicated logs in future
|
|
|
|
// We do not care about accurate duration here. It just does the check periodically, 0.5s or 1.5s are all OK.
|
|
t := time.NewTicker(time.Second)
|
|
for {
|
|
select {
|
|
case <-ctx.Done():
|
|
return
|
|
case <-t.C:
|
|
now := time.Now()
|
|
|
|
var slowRequests []*requestRecord
|
|
|
|
// find all slow requests with lock
|
|
manager.lock.Lock()
|
|
for index, record := range manager.requestRecords {
|
|
if now.Sub(record.startTime) < threshold {
|
|
continue
|
|
}
|
|
|
|
slowRequests = append(slowRequests, record)
|
|
delete(manager.requestRecords, index)
|
|
}
|
|
manager.lock.Unlock()
|
|
|
|
// print logs for slow requests
|
|
for _, record := range slowRequests {
|
|
manager.print(StillExecutingEvent, record)
|
|
}
|
|
}
|
|
}
|
|
})
|
|
}
|
|
|
|
func (manager *requestRecordsManager) handler(next http.Handler) http.Handler {
|
|
return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
|
|
record := &requestRecord{
|
|
startTime: time.Now(),
|
|
request: req,
|
|
responseWriter: w,
|
|
}
|
|
|
|
// generate a record index an insert into the map
|
|
manager.lock.Lock()
|
|
record.index = manager.count
|
|
manager.count++
|
|
manager.requestRecords[record.index] = record
|
|
manager.lock.Unlock()
|
|
|
|
defer func() {
|
|
// just in case there is a panic. now the panics are all recovered in middleware.go
|
|
localPanicErr := recover()
|
|
if localPanicErr != nil {
|
|
record.lock.Lock()
|
|
record.panicError = localPanicErr
|
|
record.lock.Unlock()
|
|
}
|
|
|
|
// remove from the record map
|
|
manager.lock.Lock()
|
|
delete(manager.requestRecords, record.index)
|
|
manager.lock.Unlock()
|
|
|
|
// log the end of the request
|
|
manager.print(EndEvent, record)
|
|
|
|
if localPanicErr != nil {
|
|
// the panic wasn't recovered before us, so we should pass it up, and let the framework handle the panic error
|
|
panic(localPanicErr)
|
|
}
|
|
}()
|
|
|
|
req = req.WithContext(context.WithValue(req.Context(), contextKey, record))
|
|
manager.print(StartEvent, record)
|
|
next.ServeHTTP(w, req)
|
|
})
|
|
}
|