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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>
80 lines
2.6 KiB
Go
80 lines
2.6 KiB
Go
// Copyright 2022 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 process
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import (
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"bytes"
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"context"
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"io"
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"os/exec"
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"time"
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)
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// Exec a command and use the default timeout.
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func (pm *Manager) Exec(desc, cmdName string, args ...string) (string, string, error) {
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return pm.ExecDir(DefaultContext, -1, "", desc, cmdName, args...)
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}
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// ExecTimeout a command and use a specific timeout duration.
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func (pm *Manager) ExecTimeout(timeout time.Duration, desc, cmdName string, args ...string) (string, string, error) {
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return pm.ExecDir(DefaultContext, timeout, "", desc, cmdName, args...)
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}
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// ExecDir a command and use the default timeout.
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func (pm *Manager) ExecDir(ctx context.Context, timeout time.Duration, dir, desc, cmdName string, args ...string) (string, string, error) {
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return pm.ExecDirEnv(ctx, timeout, dir, desc, nil, cmdName, args...)
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}
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// ExecDirEnv runs a command in given path and environment variables, and waits for its completion
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// up to the given timeout (or DefaultTimeout if -1 is given).
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// Returns its complete stdout and stderr
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// outputs and an error, if any (including timeout)
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func (pm *Manager) ExecDirEnv(ctx context.Context, timeout time.Duration, dir, desc string, env []string, cmdName string, args ...string) (string, string, error) {
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return pm.ExecDirEnvStdIn(ctx, timeout, dir, desc, env, nil, cmdName, args...)
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}
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// ExecDirEnvStdIn runs a command in given path and environment variables with provided stdIN, and waits for its completion
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// up to the given timeout (or DefaultTimeout if timeout <= 0 is given).
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// Returns its complete stdout and stderr
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// outputs and an error, if any (including timeout)
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func (pm *Manager) ExecDirEnvStdIn(ctx context.Context, timeout time.Duration, dir, desc string, env []string, stdIn io.Reader, cmdName string, args ...string) (string, string, error) {
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if timeout <= 0 {
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timeout = 60 * time.Second
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}
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stdOut := new(bytes.Buffer)
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stdErr := new(bytes.Buffer)
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ctx, _, finished := pm.AddContextTimeout(ctx, timeout, desc)
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defer finished()
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cmd := exec.CommandContext(ctx, cmdName, args...)
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cmd.Dir = dir
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cmd.Env = env
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cmd.Stdout = stdOut
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cmd.Stderr = stdErr
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if stdIn != nil {
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cmd.Stdin = stdIn
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}
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if err := cmd.Start(); err != nil {
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return "", "", err
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}
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err := cmd.Wait()
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if err != nil {
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err = &Error{
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PID: GetPID(ctx),
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Description: desc,
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Err: err,
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CtxErr: ctx.Err(),
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Stdout: stdOut.String(),
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Stderr: stdErr.String(),
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}
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}
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return stdOut.String(), stdErr.String(), err
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}
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