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https://codeberg.org/forgejo/forgejo.git
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91fa0eb9d7
Partially fix #23050 After #22294 merged, it always has a warning log like `cannot get context cache` when starting up. This should not affect any real life but it's annoying. This PR will fix the problem. That means when starting up, getting the system settings will not try from the cache but will read from the database directly. --------- Co-authored-by: Lauris BH <lauris@nix.lv>
318 lines
9.3 KiB
Go
318 lines
9.3 KiB
Go
// Copyright 2021 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package system
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import (
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"context"
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"fmt"
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"net/url"
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"strconv"
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"strings"
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"code.gitea.io/gitea/models/db"
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"code.gitea.io/gitea/modules/cache"
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setting_module "code.gitea.io/gitea/modules/setting"
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"code.gitea.io/gitea/modules/timeutil"
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"strk.kbt.io/projects/go/libravatar"
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"xorm.io/builder"
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)
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// Setting is a key value store of user settings
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type Setting struct {
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ID int64 `xorm:"pk autoincr"`
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SettingKey string `xorm:"varchar(255) unique"` // ensure key is always lowercase
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SettingValue string `xorm:"text"`
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Version int `xorm:"version"` // prevent to override
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Created timeutil.TimeStamp `xorm:"created"`
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Updated timeutil.TimeStamp `xorm:"updated"`
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}
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// TableName sets the table name for the settings struct
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func (s *Setting) TableName() string {
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return "system_setting"
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}
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func (s *Setting) GetValueBool() bool {
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if s == nil {
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return false
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}
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b, _ := strconv.ParseBool(s.SettingValue)
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return b
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}
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func init() {
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db.RegisterModel(new(Setting))
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}
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// ErrSettingIsNotExist represents an error that a setting is not exist with special key
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type ErrSettingIsNotExist struct {
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Key string
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}
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// Error implements error
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func (err ErrSettingIsNotExist) Error() string {
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return fmt.Sprintf("System setting[%s] is not exist", err.Key)
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}
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// IsErrSettingIsNotExist return true if err is ErrSettingIsNotExist
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func IsErrSettingIsNotExist(err error) bool {
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_, ok := err.(ErrSettingIsNotExist)
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return ok
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}
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// ErrDataExpired represents an error that update a record which has been updated by another thread
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type ErrDataExpired struct {
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Key string
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}
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// Error implements error
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func (err ErrDataExpired) Error() string {
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return fmt.Sprintf("System setting[%s] has been updated by another thread", err.Key)
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}
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// IsErrDataExpired return true if err is ErrDataExpired
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func IsErrDataExpired(err error) bool {
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_, ok := err.(ErrDataExpired)
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return ok
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}
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// GetSetting returns specific setting without using the cache
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func GetSetting(ctx context.Context, key string) (*Setting, error) {
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v, err := GetSettings(ctx, []string{key})
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if err != nil {
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return nil, err
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}
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if len(v) == 0 {
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return nil, ErrSettingIsNotExist{key}
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}
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return v[strings.ToLower(key)], nil
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}
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const contextCacheKey = "system_setting"
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// GetSettingWithCache returns the setting value via the key
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func GetSettingWithCache(ctx context.Context, key string) (string, error) {
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return cache.GetWithContextCache(ctx, contextCacheKey, key, func() (string, error) {
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return cache.GetString(genSettingCacheKey(key), func() (string, error) {
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res, err := GetSetting(ctx, key)
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if err != nil {
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return "", err
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}
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return res.SettingValue, nil
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})
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})
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}
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// GetSettingBool return bool value of setting,
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// none existing keys and errors are ignored and result in false
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func GetSettingBool(ctx context.Context, key string) bool {
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s, _ := GetSetting(ctx, key)
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if s == nil {
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return false
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}
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v, _ := strconv.ParseBool(s.SettingValue)
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return v
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}
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func GetSettingWithCacheBool(ctx context.Context, key string) bool {
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s, _ := GetSettingWithCache(ctx, key)
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v, _ := strconv.ParseBool(s)
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return v
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}
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// GetSettings returns specific settings
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func GetSettings(ctx context.Context, keys []string) (map[string]*Setting, error) {
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for i := 0; i < len(keys); i++ {
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keys[i] = strings.ToLower(keys[i])
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}
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settings := make([]*Setting, 0, len(keys))
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if err := db.GetEngine(ctx).
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Where(builder.In("setting_key", keys)).
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Find(&settings); err != nil {
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return nil, err
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}
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settingsMap := make(map[string]*Setting)
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for _, s := range settings {
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settingsMap[s.SettingKey] = s
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}
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return settingsMap, nil
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}
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type AllSettings map[string]*Setting
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func (settings AllSettings) Get(key string) Setting {
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if v, ok := settings[strings.ToLower(key)]; ok {
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return *v
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}
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return Setting{}
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}
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func (settings AllSettings) GetBool(key string) bool {
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b, _ := strconv.ParseBool(settings.Get(key).SettingValue)
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return b
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}
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func (settings AllSettings) GetVersion(key string) int {
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return settings.Get(key).Version
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}
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// GetAllSettings returns all settings from user
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func GetAllSettings(ctx context.Context) (AllSettings, error) {
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settings := make([]*Setting, 0, 5)
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if err := db.GetEngine(ctx).
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Find(&settings); err != nil {
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return nil, err
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}
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settingsMap := make(map[string]*Setting)
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for _, s := range settings {
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settingsMap[s.SettingKey] = s
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}
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return settingsMap, nil
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}
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// DeleteSetting deletes a specific setting for a user
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func DeleteSetting(ctx context.Context, setting *Setting) error {
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cache.RemoveContextData(ctx, contextCacheKey, setting.SettingKey)
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cache.Remove(genSettingCacheKey(setting.SettingKey))
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_, err := db.GetEngine(ctx).Delete(setting)
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return err
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}
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func SetSettingNoVersion(ctx context.Context, key, value string) error {
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s, err := GetSetting(ctx, key)
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if IsErrSettingIsNotExist(err) {
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return SetSetting(ctx, &Setting{
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SettingKey: key,
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SettingValue: value,
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})
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}
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if err != nil {
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return err
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}
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s.SettingValue = value
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return SetSetting(ctx, s)
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}
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// SetSetting updates a users' setting for a specific key
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func SetSetting(ctx context.Context, setting *Setting) error {
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if err := upsertSettingValue(ctx, strings.ToLower(setting.SettingKey), setting.SettingValue, setting.Version); err != nil {
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return err
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}
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setting.Version++
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cc := cache.GetCache()
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if cc != nil {
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if err := cc.Put(genSettingCacheKey(setting.SettingKey), setting.SettingValue, setting_module.CacheService.TTLSeconds()); err != nil {
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return err
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}
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}
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cache.SetContextData(ctx, contextCacheKey, setting.SettingKey, setting.SettingValue)
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return nil
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}
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func upsertSettingValue(parentCtx context.Context, key, value string, version int) error {
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return db.WithTx(parentCtx, func(ctx context.Context) error {
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e := db.GetEngine(ctx)
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// here we use a general method to do a safe upsert for different databases (and most transaction levels)
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// 1. try to UPDATE the record and acquire the transaction write lock
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// if UPDATE returns non-zero rows are changed, OK, the setting is saved correctly
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// if UPDATE returns "0 rows changed", two possibilities: (a) record doesn't exist (b) value is not changed
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// 2. do a SELECT to check if the row exists or not (we already have the transaction lock)
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// 3. if the row doesn't exist, do an INSERT (we are still protected by the transaction lock, so it's safe)
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//
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// to optimize the SELECT in step 2, we can use an extra column like `revision=revision+1`
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// to make sure the UPDATE always returns a non-zero value for existing (unchanged) records.
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res, err := e.Exec("UPDATE system_setting SET setting_value=?, version = version+1 WHERE setting_key=? AND version=?", value, key, version)
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if err != nil {
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return err
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}
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rows, _ := res.RowsAffected()
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if rows > 0 {
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// the existing row is updated, so we can return
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return nil
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}
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// in case the value isn't changed, update would return 0 rows changed, so we need this check
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has, err := e.Exist(&Setting{SettingKey: key})
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if err != nil {
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return err
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}
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if has {
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return ErrDataExpired{Key: key}
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}
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// if no existing row, insert a new row
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_, err = e.Insert(&Setting{SettingKey: key, SettingValue: value})
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return err
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})
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}
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var (
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GravatarSourceURL *url.URL
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LibravatarService *libravatar.Libravatar
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)
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func Init(ctx context.Context) error {
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var disableGravatar bool
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disableGravatarSetting, err := GetSetting(ctx, KeyPictureDisableGravatar)
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if IsErrSettingIsNotExist(err) {
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disableGravatar = setting_module.GetDefaultDisableGravatar()
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disableGravatarSetting = &Setting{SettingValue: strconv.FormatBool(disableGravatar)}
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} else if err != nil {
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return err
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} else {
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disableGravatar = disableGravatarSetting.GetValueBool()
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}
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var enableFederatedAvatar bool
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enableFederatedAvatarSetting, err := GetSetting(ctx, KeyPictureEnableFederatedAvatar)
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if IsErrSettingIsNotExist(err) {
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enableFederatedAvatar = setting_module.GetDefaultEnableFederatedAvatar(disableGravatar)
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enableFederatedAvatarSetting = &Setting{SettingValue: strconv.FormatBool(enableFederatedAvatar)}
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} else if err != nil {
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return err
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} else {
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enableFederatedAvatar = disableGravatarSetting.GetValueBool()
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}
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if setting_module.OfflineMode {
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disableGravatar = true
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enableFederatedAvatar = false
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if !GetSettingBool(ctx, KeyPictureDisableGravatar) {
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if err := SetSettingNoVersion(ctx, KeyPictureDisableGravatar, "true"); err != nil {
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return fmt.Errorf("Failed to set setting %q: %w", KeyPictureDisableGravatar, err)
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}
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}
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if GetSettingBool(ctx, KeyPictureEnableFederatedAvatar) {
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if err := SetSettingNoVersion(ctx, KeyPictureEnableFederatedAvatar, "false"); err != nil {
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return fmt.Errorf("Failed to set setting %q: %w", KeyPictureEnableFederatedAvatar, err)
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}
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}
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}
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if enableFederatedAvatar || !disableGravatar {
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var err error
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GravatarSourceURL, err = url.Parse(setting_module.GravatarSource)
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if err != nil {
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return fmt.Errorf("Failed to parse Gravatar URL(%s): %w", setting_module.GravatarSource, err)
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}
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}
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if GravatarSourceURL != nil && enableFederatedAvatarSetting.GetValueBool() {
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LibravatarService = libravatar.New()
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if GravatarSourceURL.Scheme == "https" {
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LibravatarService.SetUseHTTPS(true)
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LibravatarService.SetSecureFallbackHost(GravatarSourceURL.Host)
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} else {
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LibravatarService.SetUseHTTPS(false)
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LibravatarService.SetFallbackHost(GravatarSourceURL.Host)
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}
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}
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return nil
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}
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