mirror of
https://github.com/gitpod-io/gitpod.git
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91 lines
2.1 KiB
Go
91 lines
2.1 KiB
Go
// Copyright (c) 2021 Gitpod GmbH. All rights reserved.
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// Licensed under the GNU Affero General Public License (AGPL).
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// See License.AGPL.txt in the project root for license information.
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package pkg
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import (
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"encoding/json"
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"net/http"
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"time"
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"github.com/allegro/bigcache"
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"github.com/eko/gocache/cache"
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"github.com/eko/gocache/store"
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"github.com/go-redis/redis/v7"
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"golang.org/x/xerrors"
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)
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type CacheObject struct {
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Header http.Header
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Body []byte
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StatusCode int
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}
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func (cacheObj *CacheObject) ToJson() ([]byte, error) {
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b, err := json.Marshal(cacheObj)
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if err != nil {
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return nil, xerrors.Errorf("cannot convert cache object to JSON: %v", err)
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}
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return b, nil
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}
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func (cacheObj *CacheObject) FromJson(v []byte) error {
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err := json.Unmarshal(v, cacheObj)
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if err != nil {
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return xerrors.Errorf("cannot convert cache object from JSON: %v", err)
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}
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return nil
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}
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func (o *OpenVSXProxy) SetupCache() error {
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var cacheStore store.StoreInterface
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if o.Config.RedisEnabled() {
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redisClient := redis.NewClient(&redis.Options{Addr: o.Config.RedisAddr})
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cacheStore = store.NewRedis(redisClient, nil)
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} else {
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bigcacheClient, err := bigcache.NewBigCache(bigcache.DefaultConfig(time.Duration(o.Config.CacheDurationBackup)))
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if err != nil {
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return err
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}
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cacheStore = store.NewBigcache(bigcacheClient, nil)
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}
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o.cacheManager = cache.New(cacheStore)
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return nil
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}
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func (o *OpenVSXProxy) StoreCache(key string, obj *CacheObject) error {
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b, err := obj.ToJson()
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if err != nil {
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return err
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}
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if o.Config.RedisEnabled() {
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return o.cacheManager.Set(key, string(b), nil)
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}
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return o.cacheManager.Set(key, b, nil)
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}
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func (o *OpenVSXProxy) ReadCache(key string) (obj *CacheObject, ok bool, err error) {
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b, err := o.cacheManager.Get(key)
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if err == bigcache.ErrEntryNotFound || err == redis.Nil {
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return nil, false, nil
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} else if err != nil || b == nil {
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return
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}
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var bb []byte
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if o.Config.RedisEnabled() {
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bb = []byte(b.(string))
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} else {
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bb = b.([]byte)
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}
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obj = &CacheObject{}
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if err = obj.FromJson(bb); err != nil {
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return
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}
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ok = true
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return
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}
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