Move pidfile creation from setting to web cmd package (#23285)

Creating pid file should not belong to setting package and only web
command needs that. So this PR moves pidfile creation from setting
package to web command package to keep setting package more readable.

I marked this as `break` because the PIDFile path moved. For those who
have used the pid build argument, it has to be changed.

---------

Co-authored-by: KN4CK3R <admin@oldschoolhack.me>

2 files changed, 18 insertions, 37 deletions

diff --git a/modules/setting/database.go b/modules/setting/database.go
index d7a5078fe9..8c4dfb21d7 100644
--- a/modules/setting/database.go
+++ b/modules/setting/database.go
@@ -54,7 +54,11 @@ var (
 
 // LoadDBSetting loads the database settings
 func LoadDBSetting() {
-	sec := CfgProvider.Section("database")
+	loadDBSetting(CfgProvider)
+}
+
+func loadDBSetting(rootCfg ConfigProvider) {
+	sec := rootCfg.Section("database")
 	Database.Type = DatabaseType(sec.Key("DB_TYPE").String())
 	defaultCharset := "utf8"
 
diff --git a/modules/setting/setting.go b/modules/setting/setting.go
index 87b1e2797f..4d7a7caab8 100644
--- a/modules/setting/setting.go
+++ b/modules/setting/setting.go
@@ -12,7 +12,6 @@ import (
 	"path"
 	"path/filepath"
 	"runtime"
-	"strconv"
 	"strings"
 	"time"
 
@@ -42,15 +41,13 @@ var (
 	AppWorkPath string
 
 	// Global setting objects
-	CfgProvider  ConfigProvider
-	CustomPath   string // Custom directory path
-	CustomConf   string
-	PIDFile      = "/run/gitea.pid"
-	WritePIDFile bool
-	RunMode      string
-	RunUser      string
-	IsProd       bool
-	IsWindows    bool
+	CfgProvider ConfigProvider
+	CustomPath  string // Custom directory path
+	CustomConf  string
+	RunMode     string
+	RunUser     string
+	IsProd      bool
+	IsWindows   bool
 )
 
 func getAppPath() (string, error) {
@@ -141,22 +138,6 @@ func IsRunUserMatchCurrentUser(runUser string) (string, bool) {
 	return currentUser, runUser == currentUser
 }
 
-func createPIDFile(pidPath string) {
-	currentPid := os.Getpid()
-	if err := os.MkdirAll(filepath.Dir(pidPath), os.ModePerm); err != nil {
-		log.Fatal("Failed to create PID folder: %v", err)
-	}
-
-	file, err := os.Create(pidPath)
-	if err != nil {
-		log.Fatal("Failed to create PID file: %v", err)
-	}
-	defer file.Close()
-	if _, err := file.WriteString(strconv.FormatInt(int64(currentPid), 10)); err != nil {
-		log.Fatal("Failed to write PID information: %v", err)
-	}
-}
-
 // SetCustomPathAndConf will set CustomPath and CustomConf with reference to the
 // GITEA_CUSTOM environment variable and with provided overrides before stepping
 // back to the default
@@ -218,17 +199,17 @@ func PrepareAppDataPath() error {
 
 // InitProviderFromExistingFile initializes config provider from an existing config file (app.ini)
 func InitProviderFromExistingFile() {
-	CfgProvider = newFileProviderFromConf(CustomConf, WritePIDFile, false, PIDFile, "")
+	CfgProvider = newFileProviderFromConf(CustomConf, false, "")
 }
 
 // InitProviderAllowEmpty initializes config provider from file, it's also fine that if the config file (app.ini) doesn't exist
 func InitProviderAllowEmpty() {
-	CfgProvider = newFileProviderFromConf(CustomConf, WritePIDFile, true, PIDFile, "")
+	CfgProvider = newFileProviderFromConf(CustomConf, true, "")
 }
 
 // InitProviderAndLoadCommonSettingsForTest initializes config provider and load common setttings for tests
 func InitProviderAndLoadCommonSettingsForTest(extraConfigs ...string) {
-	CfgProvider = newFileProviderFromConf(CustomConf, WritePIDFile, true, PIDFile, strings.Join(extraConfigs, "\n"))
+	CfgProvider = newFileProviderFromConf(CustomConf, true, strings.Join(extraConfigs, "\n"))
 	loadCommonSettingsFrom(CfgProvider)
 	if err := PrepareAppDataPath(); err != nil {
 		log.Fatal("Can not prepare APP_DATA_PATH: %v", err)
@@ -241,13 +222,9 @@ func InitProviderAndLoadCommonSettingsForTest(extraConfigs ...string) {
 
 // newFileProviderFromConf initializes configuration context.
 // NOTE: do not print any log except error.
-func newFileProviderFromConf(customConf string, writePIDFile, allowEmpty bool, pidFile, extraConfig string) *ini.File {
+func newFileProviderFromConf(customConf string, allowEmpty bool, extraConfig string) *ini.File {
 	cfg := ini.Empty()
 
-	if writePIDFile && len(pidFile) > 0 {
-		createPIDFile(pidFile)
-	}
-
 	isFile, err := util.IsFile(customConf)
 	if err != nil {
 		log.Error("Unable to check if %s is a file. Error: %v", customConf, err)
@@ -380,7 +357,7 @@ func CreateOrAppendToCustomConf(purpose string, callback func(cfg *ini.File)) {
 
 // LoadSettings initializes the settings for normal start up
 func LoadSettings() {
-	LoadDBSetting()
+	loadDBSetting(CfgProvider)
 	loadServiceFrom(CfgProvider)
 	loadOAuth2ClientFrom(CfgProvider)
 	InitLogs(false)
@@ -401,7 +378,7 @@ func LoadSettings() {
 
 // LoadSettingsForInstall initializes the settings for install
 func LoadSettingsForInstall() {
-	LoadDBSetting()
+	loadDBSetting(CfgProvider)
 	loadServiceFrom(CfgProvider)
 	loadMailerFrom(CfgProvider)
 }