gitea/modules/session/redis.go

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// Copyright 2013 Beego Authors
// Copyright 2014 The Macaron Authors
// Copyright 2020 The Gitea Authors. All rights reserved.
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//
// Licensed under the Apache License, Version 2.0 (the "License"): you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
// SPDX-License-Identifier: Apache-2.0
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package session
import (
"fmt"
"sync"
"time"
"code.gitea.io/gitea/modules/graceful"
"code.gitea.io/gitea/modules/nosql"
Move macaron to chi (#14293) Use [chi](https://github.com/go-chi/chi) instead of the forked [macaron](https://gitea.com/macaron/macaron). Since macaron and chi have conflicts with session share, this big PR becomes a have-to thing. According my previous idea, we can replace macaron step by step but I'm wrong. :( Below is a list of big changes on this PR. - [x] Define `context.ResponseWriter` interface with an implementation `context.Response`. - [x] Use chi instead of macaron, and also a customize `Route` to wrap chi so that the router usage is similar as before. - [x] Create different routers for `web`, `api`, `internal` and `install` so that the codes will be more clear and no magic . - [x] Use https://github.com/unrolled/render instead of macaron's internal render - [x] Use https://github.com/NYTimes/gziphandler instead of https://gitea.com/macaron/gzip - [x] Use https://gitea.com/go-chi/session which is a modified version of https://gitea.com/macaron/session and removed `nodb` support since it will not be maintained. **BREAK** - [x] Use https://gitea.com/go-chi/captcha which is a modified version of https://gitea.com/macaron/captcha - [x] Use https://gitea.com/go-chi/cache which is a modified version of https://gitea.com/macaron/cache - [x] Use https://gitea.com/go-chi/binding which is a modified version of https://gitea.com/macaron/binding - [x] Use https://github.com/go-chi/cors instead of https://gitea.com/macaron/cors - [x] Dropped https://gitea.com/macaron/i18n and make a new one in `code.gitea.io/gitea/modules/translation` - [x] Move validation form structs from `code.gitea.io/gitea/modules/auth` to `code.gitea.io/gitea/modules/forms` to avoid dependency cycle. - [x] Removed macaron log service because it's not need any more. **BREAK** - [x] All form structs have to be get by `web.GetForm(ctx)` in the route function but not as a function parameter on routes definition. - [x] Move Git HTTP protocol implementation to use routers directly. - [x] Fix the problem that chi routes don't support trailing slash but macaron did. - [x] `/api/v1/swagger` now will be redirect to `/api/swagger` but not render directly so that `APIContext` will not create a html render. Notices: - Chi router don't support request with trailing slash - Integration test `TestUserHeatmap` maybe mysql version related. It's failed on my macOS(mysql 5.7.29 installed via brew) but succeed on CI. Co-authored-by: 6543 <6543@obermui.de>
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"gitea.com/go-chi/session"
"github.com/go-redis/redis/v8"
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)
// RedisStore represents a redis session store implementation.
type RedisStore struct {
c redis.UniversalClient
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prefix, sid string
duration time.Duration
lock sync.RWMutex
data map[interface{}]interface{}
}
// NewRedisStore creates and returns a redis session store.
func NewRedisStore(c redis.UniversalClient, prefix, sid string, dur time.Duration, kv map[interface{}]interface{}) *RedisStore {
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return &RedisStore{
c: c,
prefix: prefix,
sid: sid,
duration: dur,
data: kv,
}
}
// Set sets value to given key in session.
func (s *RedisStore) Set(key, val interface{}) error {
s.lock.Lock()
defer s.lock.Unlock()
s.data[key] = val
return nil
}
// Get gets value by given key in session.
func (s *RedisStore) Get(key interface{}) interface{} {
s.lock.RLock()
defer s.lock.RUnlock()
return s.data[key]
}
// Delete delete a key from session.
func (s *RedisStore) Delete(key interface{}) error {
s.lock.Lock()
defer s.lock.Unlock()
delete(s.data, key)
return nil
}
// ID returns current session ID.
func (s *RedisStore) ID() string {
return s.sid
}
// Release releases resource and save data to provider.
func (s *RedisStore) Release() error {
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// Skip encoding if the data is empty
if len(s.data) == 0 {
return nil
}
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data, err := session.EncodeGob(s.data)
if err != nil {
return err
}
return s.c.Set(graceful.GetManager().HammerContext(), s.prefix+s.sid, string(data), s.duration).Err()
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}
// Flush deletes all session data.
func (s *RedisStore) Flush() error {
s.lock.Lock()
defer s.lock.Unlock()
s.data = make(map[interface{}]interface{})
return nil
}
// RedisProvider represents a redis session provider implementation.
type RedisProvider struct {
c redis.UniversalClient
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duration time.Duration
prefix string
}
// Init initializes redis session provider.
// configs: network=tcp,addr=:6379,password=macaron,db=0,pool_size=100,idle_timeout=180,prefix=session;
func (p *RedisProvider) Init(maxlifetime int64, configs string) (err error) {
p.duration, err = time.ParseDuration(fmt.Sprintf("%ds", maxlifetime))
if err != nil {
return err
}
uri := nosql.ToRedisURI(configs)
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for k, v := range uri.Query() {
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switch k {
case "prefix":
p.prefix = v[0]
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}
}
p.c = nosql.GetManager().GetRedisClient(uri.String())
return p.c.Ping(graceful.GetManager().ShutdownContext()).Err()
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}
// Read returns raw session store by session ID.
func (p *RedisProvider) Read(sid string) (session.RawStore, error) {
psid := p.prefix + sid
if !p.Exist(sid) {
if err := p.c.Set(graceful.GetManager().HammerContext(), psid, "", p.duration).Err(); err != nil {
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return nil, err
}
}
var kv map[interface{}]interface{}
kvs, err := p.c.Get(graceful.GetManager().HammerContext(), psid).Result()
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if err != nil {
return nil, err
}
if len(kvs) == 0 {
kv = make(map[interface{}]interface{})
} else {
kv, err = session.DecodeGob([]byte(kvs))
if err != nil {
return nil, err
}
}
return NewRedisStore(p.c, p.prefix, sid, p.duration, kv), nil
}
// Exist returns true if session with given ID exists.
func (p *RedisProvider) Exist(sid string) bool {
v, err := p.c.Exists(graceful.GetManager().HammerContext(), p.prefix+sid).Result()
return err == nil && v == 1
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}
// Destroy deletes a session by session ID.
func (p *RedisProvider) Destroy(sid string) error {
return p.c.Del(graceful.GetManager().HammerContext(), p.prefix+sid).Err()
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}
// Regenerate regenerates a session store from old session ID to new one.
func (p *RedisProvider) Regenerate(oldsid, sid string) (_ session.RawStore, err error) {
poldsid := p.prefix + oldsid
psid := p.prefix + sid
if p.Exist(sid) {
return nil, fmt.Errorf("new sid '%s' already exists", sid)
} else if !p.Exist(oldsid) {
// Make a fake old session.
if err = p.c.Set(graceful.GetManager().HammerContext(), poldsid, "", p.duration).Err(); err != nil {
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return nil, err
}
}
if err = p.c.Rename(graceful.GetManager().HammerContext(), poldsid, psid).Err(); err != nil {
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return nil, err
}
var kv map[interface{}]interface{}
kvs, err := p.c.Get(graceful.GetManager().HammerContext(), psid).Result()
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if err != nil {
return nil, err
}
if len(kvs) == 0 {
kv = make(map[interface{}]interface{})
} else {
kv, err = session.DecodeGob([]byte(kvs))
if err != nil {
return nil, err
}
}
return NewRedisStore(p.c, p.prefix, sid, p.duration, kv), nil
}
// Count counts and returns number of sessions.
func (p *RedisProvider) Count() int {
size, err := p.c.DBSize(graceful.GetManager().HammerContext()).Result()
if err != nil {
return 0
}
return int(size)
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}
// GC calls GC to clean expired sessions.
func (*RedisProvider) GC() {}
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func init() {
session.Register("redis", &RedisProvider{})
}