Refactor doctor (#12264)

* Refactor Logger

Refactor Logger to make a logger interface and make it possible to
wrap loggers for specific purposes.

* Refactor Doctor

    Move the gitea doctor functions into its own module.
    Use a logger for its messages instead of returning a results string[]

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Update modules/doctor/misc.go

Co-authored-by: 6543 <6543@obermui.de>

* Update modules/doctor/misc.go

Co-authored-by: 6543 <6543@obermui.de>

Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>

modules/doctor/misc.go

@@ -0,0 +1,146 @@
+// Copyright 2020 The Gitea Authors. All rights reserved.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package doctor
+
+import (
+	"fmt"
+	"os/exec"
+	"strings"
+
+	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/modules/git"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/modules/repository"
+	"code.gitea.io/gitea/modules/setting"
+	"xorm.io/builder"
+)
+
+func iterateRepositories(each func(*models.Repository) error) error {
+	err := models.Iterate(
+		models.DefaultDBContext(),
+		new(models.Repository),
+		builder.Gt{"id": 0},
+		func(idx int, bean interface{}) error {
+			return each(bean.(*models.Repository))
+		},
+	)
+	return err
+}
+
+func checkScriptType(logger log.Logger, autofix bool) error {
+	path, err := exec.LookPath(setting.ScriptType)
+	if err != nil {
+		logger.Critical("ScriptType \"%q\" is not on the current PATH. Error: %v", setting.ScriptType, err)
+		return fmt.Errorf("ScriptType \"%q\" is not on the current PATH. Error: %v", setting.ScriptType, err)
+	}
+	logger.Info("ScriptType %s is on the current PATH at %s", setting.ScriptType, path)
+	return nil
+}
+
+func checkHooks(logger log.Logger, autofix bool) error {
+	if err := iterateRepositories(func(repo *models.Repository) error {
+		results, err := repository.CheckDelegateHooks(repo.RepoPath())
+		if err != nil {
+			logger.Critical("Unable to check delegate hooks for repo %-v. ERROR: %v", repo, err)
+			return fmt.Errorf("Unable to check delegate hooks for repo %-v. ERROR: %v", repo, err)
+		}
+		if len(results) > 0 && autofix {
+			logger.Warn("Regenerated hooks for %s", repo.FullName())
+			if err := repository.CreateDelegateHooks(repo.RepoPath()); err != nil {
+				logger.Critical("Unable to recreate delegate hooks for %-v. ERROR: %v", repo, err)
+				return fmt.Errorf("Unable to recreate delegate hooks for %-v. ERROR: %v", repo, err)
+			}
+		}
+		for _, result := range results {
+			logger.Warn(result)
+		}
+		return nil
+	}); err != nil {
+		logger.Critical("Errors noted whilst checking delegate hooks.")
+		return err
+	}
+	return nil
+}
+
+func checkUserStarNum(logger log.Logger, autofix bool) error {
+	if err := models.DoctorUserStarNum(); err != nil {
+		logger.Critical("Unable update User Stars numbers")
+		return err
+	}
+	return nil
+}
+
+func checkEnablePushOptions(logger log.Logger, autofix bool) error {
+	numRepos := 0
+	numNeedUpdate := 0
+	if err := iterateRepositories(func(repo *models.Repository) error {
+		numRepos++
+		r, err := git.OpenRepository(repo.RepoPath())
+		if err != nil {
+			return err
+		}
+		defer r.Close()
+
+		if autofix {
+			_, err := git.NewCommand("config", "receive.advertisePushOptions", "true").RunInDir(r.Path)
+			return err
+		}
+
+		value, err := git.NewCommand("config", "receive.advertisePushOptions").RunInDir(r.Path)
+		if err != nil {
+			return err
+		}
+
+		result, valid := git.ParseBool(strings.TrimSpace(value))
+		if !result || !valid {
+			numNeedUpdate++
+			logger.Info("%s: does not have receive.advertisePushOptions set correctly: %q", repo.FullName(), value)
+		}
+		return nil
+	}); err != nil {
+		logger.Critical("Unable to EnablePushOptions: %v", err)
+		return err
+	}
+
+	if autofix {
+		logger.Info("Enabled push options for %d repositories.", numRepos)
+	} else {
+		logger.Info("Checked %d repositories, %d need updates.", numRepos, numNeedUpdate)
+
+	}
+
+	return nil
+}
+
+func init() {
+	Register(&Check{
+		Title:     "Check if SCRIPT_TYPE is available",
+		Name:      "script-type",
+		IsDefault: false,
+		Run:       checkScriptType,
+		Priority:  5,
+	})
+	Register(&Check{
+		Title:     "Check if hook files are up-to-date and executable",
+		Name:      "hooks",
+		IsDefault: false,
+		Run:       checkHooks,
+		Priority:  6,
+	})
+	Register(&Check{
+		Title:     "Recalculate Stars number for all user",
+		Name:      "recalculate-stars-number",
+		IsDefault: false,
+		Run:       checkUserStarNum,
+		Priority:  6,
+	})
+	Register(&Check{
+		Title:     "Enable push options",
+		Name:      "enable-push-options",
+		IsDefault: false,
+		Run:       checkEnablePushOptions,
+		Priority:  7,
+	})
+}