When reading expired sessions - expire them (#12686)
* When reading expired sessions - expire them Update to latest macaron/session following merge of https://gitea.com/macaron/session/pulls/11 Also remove old memory provider as 11 updates the memory provider to make it unnecessary. Signed-off-by: Andrew Thornton <art27@cantab.net> * and macaron/session/pulls/12 Signed-off-by: Andrew Thornton <art27@cantab.net>tokarchuk/v1.17
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4 years ago
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5fd9f72104
@ -1,216 +0,0 @@ |
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// Copyright 2013 Beego Authors
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// Copyright 2014 The Macaron Authors
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// Copyright 2019 The Gitea Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License"): you may
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// not use this file except in compliance with the License. You may obtain
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// a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations
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// under the License.
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package session |
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import ( |
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"container/list" |
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"fmt" |
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"sync" |
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"time" |
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"gitea.com/macaron/session" |
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) |
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// MemStore represents a in-memory session store implementation.
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type MemStore struct { |
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sid string |
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lock sync.RWMutex |
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data map[interface{}]interface{} |
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lastAccess time.Time |
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} |
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// NewMemStore creates and returns a memory session store.
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func NewMemStore(sid string) *MemStore { |
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return &MemStore{ |
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sid: sid, |
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data: make(map[interface{}]interface{}), |
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lastAccess: time.Now(), |
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} |
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} |
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// Set sets value to given key in session.
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func (s *MemStore) Set(key, val interface{}) error { |
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s.lock.Lock() |
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defer s.lock.Unlock() |
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s.data[key] = val |
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return nil |
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} |
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// Get gets value by given key in session.
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func (s *MemStore) Get(key interface{}) interface{} { |
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s.lock.RLock() |
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defer s.lock.RUnlock() |
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return s.data[key] |
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} |
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// Delete deletes a key from session.
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func (s *MemStore) Delete(key interface{}) error { |
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s.lock.Lock() |
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defer s.lock.Unlock() |
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delete(s.data, key) |
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return nil |
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} |
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// ID returns current session ID.
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func (s *MemStore) ID() string { |
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return s.sid |
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} |
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// Release releases resource and save data to provider.
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func (*MemStore) Release() error { |
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return nil |
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} |
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// Flush deletes all session data.
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func (s *MemStore) Flush() error { |
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s.lock.Lock() |
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defer s.lock.Unlock() |
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s.data = make(map[interface{}]interface{}) |
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return nil |
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} |
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// MemProvider represents a in-memory session provider implementation.
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type MemProvider struct { |
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lock sync.RWMutex |
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maxLifetime int64 |
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data map[string]*list.Element |
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// A priority list whose lastAccess newer gets higher priority.
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list *list.List |
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} |
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// Init initializes memory session provider.
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func (p *MemProvider) Init(maxLifetime int64, _ string) error { |
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p.lock.Lock() |
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p.maxLifetime = maxLifetime |
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p.lock.Unlock() |
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return nil |
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} |
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// update expands time of session store by given ID.
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func (p *MemProvider) update(sid string) error { |
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p.lock.Lock() |
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defer p.lock.Unlock() |
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if e, ok := p.data[sid]; ok { |
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e.Value.(*MemStore).lastAccess = time.Now() |
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p.list.MoveToFront(e) |
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return nil |
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} |
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return nil |
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} |
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// Read returns raw session store by session ID.
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func (p *MemProvider) Read(sid string) (_ session.RawStore, err error) { |
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p.lock.RLock() |
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e, ok := p.data[sid] |
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p.lock.RUnlock() |
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if ok { |
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if err = p.update(sid); err != nil { |
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return nil, err |
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} |
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return e.Value.(*MemStore), nil |
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} |
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// Create a new session.
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p.lock.Lock() |
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defer p.lock.Unlock() |
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s := NewMemStore(sid) |
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p.data[sid] = p.list.PushBack(s) |
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return s, nil |
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} |
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// Exist returns true if session with given ID exists.
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func (p *MemProvider) Exist(sid string) bool { |
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p.lock.RLock() |
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defer p.lock.RUnlock() |
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_, ok := p.data[sid] |
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return ok |
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} |
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// Destroy deletes a session by session ID.
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func (p *MemProvider) Destroy(sid string) error { |
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p.lock.Lock() |
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defer p.lock.Unlock() |
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e, ok := p.data[sid] |
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if !ok { |
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return nil |
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} |
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p.list.Remove(e) |
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delete(p.data, sid) |
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return nil |
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} |
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// Regenerate regenerates a session store from old session ID to new one.
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func (p *MemProvider) Regenerate(oldsid, sid string) (session.RawStore, error) { |
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if p.Exist(sid) { |
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return nil, fmt.Errorf("new sid '%s' already exists", sid) |
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} |
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s, err := p.Read(oldsid) |
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if err != nil { |
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return nil, err |
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} |
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if err = p.Destroy(oldsid); err != nil { |
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return nil, err |
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} |
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s.(*MemStore).sid = sid |
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p.lock.Lock() |
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defer p.lock.Unlock() |
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p.data[sid] = p.list.PushBack(s) |
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return s, nil |
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} |
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// Count counts and returns number of sessions.
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func (p *MemProvider) Count() int { |
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return p.list.Len() |
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} |
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// GC calls GC to clean expired sessions.
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func (p *MemProvider) GC() { |
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p.lock.RLock() |
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for { |
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// No session in the list.
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e := p.list.Back() |
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if e == nil { |
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break |
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} |
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if (e.Value.(*MemStore).lastAccess.Unix() + p.maxLifetime) < time.Now().Unix() { |
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p.lock.RUnlock() |
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p.lock.Lock() |
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p.list.Remove(e) |
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delete(p.data, e.Value.(*MemStore).sid) |
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p.lock.Unlock() |
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p.lock.RLock() |
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} else { |
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break |
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} |
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} |
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p.lock.RUnlock() |
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} |
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