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memory.go
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memory.go
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/*
* Copyright (c) 2019-2021. Abstrium SAS <team (at) pydio.com>
* This file is part of Pydio Cells.
*
* Pydio Cells is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Pydio Cells is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Pydio Cells. If not, see <http://www.gnu.org/licenses/>.
*
* The latest code can be found at <https://pydio.com>.
*/
package sessions
import (
"context"
"fmt"
"sync"
"time"
"github.com/pydio/cells/common/log"
"github.com/pydio/cells/common/micro"
"github.com/pydio/cells/common/proto/tree"
"github.com/pydio/cells/data/source/index"
)
var benchmarks bool
func init() {
benchmarks = false
}
type StoredEvent struct {
Topic string
Msg interface{}
EventTime time.Time
}
type SessionMemoryStore struct {
sync.Mutex
sessions map[string]*tree.IndexationSession
eventsQueue map[string][]StoredEvent
}
func NewSessionMemoryStore() *SessionMemoryStore {
store := &SessionMemoryStore{}
store.sessions = make(map[string]*tree.IndexationSession)
store.eventsQueue = make(map[string][]StoredEvent)
return store
}
func (s *SessionMemoryStore) PutSession(session *tree.IndexationSession) error {
s.Lock()
defer s.Unlock()
s.sessions[session.Uuid] = session
return nil
}
func (s *SessionMemoryStore) ReadSession(sessionUuid string) (*tree.IndexationSession, SessionBatcher, error) {
s.Lock()
defer s.Unlock()
if sess, ok := s.sessions[sessionUuid]; ok {
var batcher SessionBatcher
batcher = &MemoryBatcher{uuid: sessionUuid, store: s}
if benchmarks {
batcher = GetBenchSessionBatcher(&MemoryBatcher{uuid: sessionUuid, store: s})
}
return sess, batcher, nil
} else {
return nil, nil, nil
}
}
func (s *SessionMemoryStore) DeleteSession(session *tree.IndexationSession) error {
s.Lock()
defer s.Unlock()
delete(s.sessions, session.Uuid)
delete(s.eventsQueue, session.Uuid)
return nil
}
func (s *SessionMemoryStore) CleanSessions() error {
return nil
}
type MemoryBatcher struct {
uuid string
store *SessionMemoryStore
}
func (b *MemoryBatcher) Notify(topic string, msg interface{}) {
b.store.Lock()
defer b.store.Unlock()
var queue []StoredEvent
var exists bool
if queue, exists = b.store.eventsQueue[b.uuid]; !exists {
queue = []StoredEvent{}
}
queue = append(queue, StoredEvent{Topic: topic, Msg: msg})
b.store.eventsQueue[b.uuid] = queue
}
func (b *MemoryBatcher) Flush(ctx context.Context, dao index.DAO) {
b.store.Lock()
defer b.store.Unlock()
cl := defaults.NewClient()
count := 0
if queue, exists := b.store.eventsQueue[b.uuid]; exists {
for _, stored := range queue {
// Notify stored event now
cl.Publish(ctx, cl.NewPublication(stored.Topic, stored.Msg))
count++
if count%1000 == 0 {
// Let's micro pause every 1000 events to reduce pressure
<-time.After(100 * time.Millisecond)
}
}
}
log.Logger(ctx).Info(fmt.Sprintf("Sent %d events event on topic", count))
}