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cache.go
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cache.go
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package activity
import (
"context"
"fmt"
"os"
"strconv"
"time"
"github.com/pydio/cells/x/jsonx"
"github.com/allegro/bigcache"
"github.com/pydio/cells/common/dao"
"github.com/pydio/cells/common/proto/activity"
"github.com/pydio/cells/common/utils/cache"
"github.com/pydio/cells/x/configx"
)
func WithCache(dao DAO) DAO {
cacheConfig := bigcache.DefaultConfig(5 * time.Minute)
cacheConfig.Shards = 64
cacheConfig.MaxEntriesInWindow = 10 * 60 * 64
cacheConfig.MaxEntrySize = 200
cacheConfig.HardMaxCacheSize = 8
if limit := os.Getenv("CELLS_CACHES_HARD_LIMIT"); limit != "" {
if l, e := strconv.ParseInt(limit, 10, 64); e == nil {
if l < 8 {
fmt.Println("[ENV] ## WARNING ## CELLS_CACHES_HARD_LIMIT cannot use a value lower than 8 (MB).")
} else {
cacheConfig.HardMaxCacheSize = int(l)
}
}
}
useBatch := false
if _, o := dao.(batchDAO); o {
useBatch = true
}
return &Cache{
dao: dao,
cache: cache.NewInstrumentedCache("activities", cacheConfig),
useBatch: useBatch,
}
}
type Cache struct {
dao DAO
cache *cache.InstrumentedCache
useBatch bool
done chan bool
input chan *batchActivity
inner []*batchActivity
}
func (c *Cache) Init(values configx.Values) error {
if c.useBatch {
c.done = make(chan bool)
c.input = make(chan *batchActivity)
c.inner = make([]*batchActivity, 0, 500)
go c.startBatching()
}
return c.dao.Init(values)
}
func (c *Cache) startBatching() {
for {
select {
case a := <-c.input:
c.inner = append(c.inner, a)
if len(c.inner) >= 500 {
c.flushBatch()
}
case <-time.After(5 * time.Second):
c.flushBatch()
case <-c.done:
c.flushBatch()
return
}
}
}
func (c *Cache) stopBatching() {
close(c.done)
}
func (c *Cache) flushBatch() {
if len(c.inner) == 0 {
return
}
c.dao.(batchDAO).BatchPost(c.inner)
c.inner = c.inner[:0]
}
func (c *Cache) GetConn() dao.Conn {
return c.dao.GetConn()
}
func (c *Cache) SetConn(conn dao.Conn) {
c.dao.SetConn(conn)
}
func (c *Cache) CloseConn() error {
if c.useBatch {
c.stopBatching()
}
return c.dao.CloseConn()
}
func (c *Cache) Driver() string {
return c.dao.Driver()
}
func (c *Cache) Prefix() string {
return c.dao.Prefix()
}
func (c *Cache) PostActivity(ownerType activity.OwnerType, ownerId string, boxName BoxName, object *activity.Object, publishCtx context.Context) error {
if !c.useBatch {
return c.dao.PostActivity(ownerType, ownerId, boxName, object, publishCtx)
} else {
c.input <- &batchActivity{
Object: object,
ownerType: ownerType,
ownerId: ownerId,
boxName: boxName,
publishCtx: publishCtx,
}
return nil
}
}
func (c *Cache) UpdateSubscription(subscription *activity.Subscription) error {
// Clear cache
c.cache.Delete(subscription.ObjectType.String() + "-" + subscription.ObjectId)
return c.dao.UpdateSubscription(subscription)
}
func (c *Cache) ListSubscriptions(objectType activity.OwnerType, objectIds []string) (res []*activity.Subscription, e error) {
var filtered []string
toCache := make(map[string][]*activity.Subscription)
for _, id := range objectIds {
// We'll cache an empty slice by default
toCache[id] = []*activity.Subscription{}
k := objectType.String() + "-" + id
if v, e := c.cache.Get(k); e == nil {
var subs []*activity.Subscription
if e := jsonx.Unmarshal(v, &subs); e == nil {
res = append(res, subs...)
continue
}
}
filtered = append(filtered, id)
}
ss, e := c.dao.ListSubscriptions(objectType, filtered)
if e != nil {
return
}
res = append(res, ss...)
for _, s := range res {
toCache[s.ObjectId] = append(toCache[s.ObjectId], s)
}
for i, t := range toCache {
if data, e := jsonx.Marshal(t); e == nil {
c.cache.Set(objectType.String()+"-"+i, data)
}
}
return
}
func (c *Cache) CountUnreadForUser(userId string) int {
return c.dao.CountUnreadForUser(userId)
}
func (c *Cache) ActivitiesFor(ownerType activity.OwnerType, ownerId string, boxName BoxName, refBoxOffset BoxName, reverseOffset int64, limit int64, result chan *activity.Object, done chan bool) error {
return c.dao.ActivitiesFor(ownerType, ownerId, boxName, refBoxOffset, reverseOffset, limit, result, done)
}
func (c *Cache) StoreLastUserInbox(userId string, boxName BoxName, last []byte, activityId string) error {
return c.dao.StoreLastUserInbox(userId, boxName, last, activityId)
}
func (c *Cache) Delete(ownerType activity.OwnerType, ownerId string) error {
return c.dao.Delete(ownerType, ownerId)
}
func (c *Cache) Purge(logger func(string), ownerType activity.OwnerType, ownerId string, boxName BoxName, minCount, maxCount int, updatedBefore time.Time, compactDB, clearBackup bool) error {
return c.dao.Purge(logger, ownerType, ownerId, boxName, minCount, maxCount, updatedBefore, compactDB, clearBackup)
}