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forgejo/modules/doctor/doctor.go
wxiaoguang 061b68e995
Refactor path & config system (#25330) (#25416)
Backport #25330

# The problem

There were many "path tricks":

* By default, Gitea uses its program directory as its work path
* Gitea tries to use the "work path" to guess its "custom path" and
"custom conf (app.ini)"
* Users might want to use other directories as work path
* The non-default work path should be passed to Gitea by GITEA_WORK_DIR
or "--work-path"
* But some Gitea processes are started without these values
    * The "serv" process started by OpenSSH server
    * The CLI sub-commands started by site admin
* The paths are guessed by SetCustomPathAndConf again and again
* The default values of "work path / custom path / custom conf" can be
changed when compiling

# The solution

* Use `InitWorkPathAndCommonConfig` to handle these path tricks, and use
test code to cover its behaviors.
* When Gitea's web server runs, write the WORK_PATH to "app.ini", this
value must be the most correct one, because if this value is not right,
users would find that the web UI doesn't work and then they should be
able to fix it.
* Then all other sub-commands can use the WORK_PATH in app.ini to
initialize their paths.
* By the way, when Gitea starts for git protocol, it shouldn't output
any log, otherwise the git protocol gets broken and client blocks
forever.

The "work path" priority is: WORK_PATH in app.ini > cmd arg --work-path
> env var GITEA_WORK_DIR > builtin default

The "app.ini" searching order is: cmd arg --config > cmd arg "work path
/ custom path" > env var "work path / custom path" > builtin default


## ⚠️ BREAKING

If your instance's "work path / custom path / custom conf" doesn't meet
the requirements (eg: work path must be absolute), Gitea will report a
fatal error and exit. You need to set these values according to the
error log.
2023-06-22 16:27:18 +00:00

123 lines
3.4 KiB
Go

// Copyright 2020 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package doctor
import (
"context"
"fmt"
"os"
"sort"
"strings"
"code.gitea.io/gitea/models/db"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
)
// Check represents a Doctor check
type Check struct {
Title string
Name string
IsDefault bool
Run func(ctx context.Context, logger log.Logger, autofix bool) error
AbortIfFailed bool
SkipDatabaseInitialization bool
Priority int
}
func initDBSkipLogger(ctx context.Context) error {
setting.MustInstalled()
setting.LoadDBSetting()
if err := db.InitEngine(ctx); err != nil {
return fmt.Errorf("db.InitEngine: %w", err)
}
// some doctor sub-commands need to use git command
if err := git.InitFull(ctx); err != nil {
return fmt.Errorf("git.InitFull: %w", err)
}
return nil
}
type doctorCheckLogger struct {
colorize bool
}
var _ log.BaseLogger = (*doctorCheckLogger)(nil)
func (d *doctorCheckLogger) Log(skip int, level log.Level, format string, v ...any) {
_, _ = fmt.Fprintf(os.Stdout, format+"\n", v...)
}
func (d *doctorCheckLogger) GetLevel() log.Level {
return log.TRACE
}
type doctorCheckStepLogger struct {
colorize bool
}
var _ log.BaseLogger = (*doctorCheckStepLogger)(nil)
func (d *doctorCheckStepLogger) Log(skip int, level log.Level, format string, v ...any) {
levelChar := fmt.Sprintf("[%s]", strings.ToUpper(level.String()[0:1]))
var levelArg any = levelChar
if d.colorize {
levelArg = log.NewColoredValue(levelChar, level.ColorAttributes()...)
}
args := append([]any{levelArg}, v...)
_, _ = fmt.Fprintf(os.Stdout, " - %s "+format+"\n", args...)
}
func (d *doctorCheckStepLogger) GetLevel() log.Level {
return log.TRACE
}
// Checks is the list of available commands
var Checks []*Check
// RunChecks runs the doctor checks for the provided list
func RunChecks(ctx context.Context, colorize, autofix bool, checks []*Check) error {
// the checks output logs by a special logger, they do not use the default logger
logger := log.BaseLoggerToGeneralLogger(&doctorCheckLogger{colorize: colorize})
loggerStep := log.BaseLoggerToGeneralLogger(&doctorCheckStepLogger{colorize: colorize})
dbIsInit := false
for i, check := range checks {
if !dbIsInit && !check.SkipDatabaseInitialization {
// Only open database after the most basic configuration check
if err := initDBSkipLogger(ctx); err != nil {
logger.Error("Error whilst initializing the database: %v", err)
logger.Error("Check if you are using the right config file. You can use a --config directive to specify one.")
return nil
}
dbIsInit = true
}
logger.Info("\n[%d] %s", i+1, check.Title)
if err := check.Run(ctx, loggerStep, autofix); err != nil {
if check.AbortIfFailed {
logger.Critical("FAIL")
return err
}
logger.Error("ERROR")
} else {
logger.Info("OK")
}
}
logger.Info("\nAll done.")
return nil
}
// Register registers a command with the list
func Register(command *Check) {
Checks = append(Checks, command)
sort.SliceStable(Checks, func(i, j int) bool {
if Checks[i].Priority == Checks[j].Priority {
return Checks[i].Name < Checks[j].Name
}
if Checks[i].Priority == 0 {
return false
}
return Checks[i].Priority < Checks[j].Priority
})
}