forked from gitea/gitea
148 lines
3.1 KiB
Go
148 lines
3.1 KiB
Go
// Copyright 2017 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 cache
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import (
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"fmt"
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"strconv"
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"code.gitea.io/gitea/modules/setting"
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mc "gitea.com/go-chi/cache"
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_ "gitea.com/go-chi/cache/memcache" // memcache plugin for cache
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)
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var conn mc.Cache
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func newCache(cacheConfig setting.Cache) (mc.Cache, error) {
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return mc.NewCacher(mc.Options{
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Adapter: cacheConfig.Adapter,
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AdapterConfig: cacheConfig.Conn,
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Interval: cacheConfig.Interval,
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})
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}
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// NewContext start cache service
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func NewContext() error {
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var err error
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if conn == nil && setting.CacheService.Enabled {
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if conn, err = newCache(setting.CacheService.Cache); err != nil {
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return err
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}
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if err = conn.Ping(); err != nil {
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return err
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}
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}
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return err
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}
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// GetCache returns the currently configured cache
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func GetCache() mc.Cache {
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return conn
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}
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// GetString returns the key value from cache with callback when no key exists in cache
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func GetString(key string, getFunc func() (string, error)) (string, error) {
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if conn == nil || setting.CacheService.TTL == 0 {
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return getFunc()
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}
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if !conn.IsExist(key) {
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var (
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value string
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err error
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)
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if value, err = getFunc(); err != nil {
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return value, err
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}
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err = conn.Put(key, value, setting.CacheService.TTLSeconds())
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if err != nil {
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return "", err
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}
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}
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value := conn.Get(key)
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if v, ok := value.(string); ok {
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return v, nil
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}
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if v, ok := value.(fmt.Stringer); ok {
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return v.String(), nil
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}
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return fmt.Sprintf("%s", conn.Get(key)), nil
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}
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// GetInt returns key value from cache with callback when no key exists in cache
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func GetInt(key string, getFunc func() (int, error)) (int, error) {
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if conn == nil || setting.CacheService.TTL == 0 {
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return getFunc()
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}
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if !conn.IsExist(key) {
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var (
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value int
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err error
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)
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if value, err = getFunc(); err != nil {
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return value, err
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}
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err = conn.Put(key, value, setting.CacheService.TTLSeconds())
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if err != nil {
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return 0, err
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}
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}
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switch value := conn.Get(key).(type) {
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case int:
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return value, nil
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case string:
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v, err := strconv.Atoi(value)
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if err != nil {
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return 0, err
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}
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return v, nil
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default:
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return 0, fmt.Errorf("Unsupported cached value type: %v", value)
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}
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}
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// GetInt64 returns key value from cache with callback when no key exists in cache
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func GetInt64(key string, getFunc func() (int64, error)) (int64, error) {
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if conn == nil || setting.CacheService.TTL == 0 {
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return getFunc()
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}
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if !conn.IsExist(key) {
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var (
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value int64
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err error
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)
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if value, err = getFunc(); err != nil {
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return value, err
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}
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err = conn.Put(key, value, setting.CacheService.TTLSeconds())
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if err != nil {
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return 0, err
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}
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}
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switch value := conn.Get(key).(type) {
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case int64:
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return value, nil
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case string:
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v, err := strconv.ParseInt(value, 10, 64)
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if err != nil {
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return 0, err
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}
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return v, nil
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default:
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return 0, fmt.Errorf("Unsupported cached value type: %v", value)
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}
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}
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// Remove key from cache
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func Remove(key string) {
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if conn == nil {
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return
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}
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_ = conn.Delete(key)
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}
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