c88547ce71
Continues on from #19202. Following the addition of pprof labels we can now more easily understand the relationship between a goroutine and the requests that spawn them. This PR takes advantage of the labels and adds a few others, then provides a mechanism for the monitoring page to query the pprof goroutine profile. The binary profile that results from this profile is immediately piped in to the google library for parsing this and then stack traces are formed for the goroutines. If the goroutine is within a context or has been created from a goroutine within a process context it will acquire the process description labels for that process. The goroutines are mapped with there associate pids and any that do not have an associated pid are placed in a group at the bottom as unbound. In this way we should be able to more easily examine goroutines that have been stuck. A manager command `gitea manager processes` is also provided that can export the processes (with or without stacktraces) to the command line. Signed-off-by: Andrew Thornton <art27@cantab.net>
114 lines
2.6 KiB
Go
114 lines
2.6 KiB
Go
// Copyright 2014 The Gogs Authors. All rights reserved.
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// Copyright 2019 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package cron
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import (
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"context"
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"runtime/pprof"
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"time"
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"code.gitea.io/gitea/modules/graceful"
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"code.gitea.io/gitea/modules/process"
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"code.gitea.io/gitea/modules/sync"
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"github.com/gogs/cron"
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)
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var c = cron.New()
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// Prevent duplicate running tasks.
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var taskStatusTable = sync.NewStatusTable()
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// NewContext begins cron tasks
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// Each cron task is run within the shutdown context as a running server
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// AtShutdown the cron server is stopped
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func NewContext(original context.Context) {
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defer pprof.SetGoroutineLabels(original)
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_, _, finished := process.GetManager().AddTypedContext(graceful.GetManager().ShutdownContext(), "Service: Cron", process.SystemProcessType, true)
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initBasicTasks()
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initExtendedTasks()
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lock.Lock()
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for _, task := range tasks {
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if task.IsEnabled() && task.DoRunAtStart() {
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go task.Run()
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}
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}
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c.Start()
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started = true
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lock.Unlock()
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graceful.GetManager().RunAtShutdown(context.Background(), func() {
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c.Stop()
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lock.Lock()
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started = false
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lock.Unlock()
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finished()
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})
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}
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// TaskTableRow represents a task row in the tasks table
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type TaskTableRow struct {
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Name string
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Spec string
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Next time.Time
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Prev time.Time
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Status string
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LastMessage string
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LastDoer string
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ExecTimes int64
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task *Task
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}
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func (t *TaskTableRow) FormatLastMessage(locale string) string {
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if t.Status == "finished" {
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return t.task.GetConfig().FormatMessage(locale, t.Name, t.Status, t.LastDoer)
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}
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return t.task.GetConfig().FormatMessage(locale, t.Name, t.Status, t.LastDoer, t.LastMessage)
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}
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// TaskTable represents a table of tasks
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type TaskTable []*TaskTableRow
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// ListTasks returns all running cron tasks.
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func ListTasks() TaskTable {
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entries := c.Entries()
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eMap := map[string]*cron.Entry{}
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for _, e := range entries {
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eMap[e.Description] = e
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}
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lock.Lock()
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defer lock.Unlock()
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tTable := make([]*TaskTableRow, 0, len(tasks))
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for _, task := range tasks {
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spec := "-"
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var (
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next time.Time
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prev time.Time
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)
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if e, ok := eMap[task.Name]; ok {
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spec = e.Spec
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next = e.Next
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prev = e.Prev
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}
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task.lock.Lock()
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tTable = append(tTable, &TaskTableRow{
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Name: task.Name,
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Spec: spec,
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Next: next,
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Prev: prev,
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ExecTimes: task.ExecTimes,
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LastMessage: task.LastMessage,
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Status: task.Status,
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LastDoer: task.LastDoer,
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task: task,
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})
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task.lock.Unlock()
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}
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return tTable
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}
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