//Len returns # of records in the cache.
func (c *Cache) Len() int {
var r []*record.DB
err := db.DB.View(func(tx *bolt.Tx) error {
var err error
r, err = record.GetFromDBs(tx, c.Datfile)
return err
})
if err != nil {
log.Print(err)
return 0
}
return len(r)
}
//Remove Remove all files and dirs of cache.
func (c *Cache) Remove() {
err := db.DB.Update(func(tx *bolt.Tx) error {
r, err := record.GetFromDBs(tx, c.Datfile)
if err != nil {
return err
}
for _, rr := range r {
rr.Del(tx)
}
return db.Del(tx, "thread", []byte(c.Datfile))
})
if err != nil {
log.Println(err)
}
}
//HasRecord return true if cache has more than one records or removed records.
func (c *Cache) HasRecord() bool {
var r []*record.DB
err := db.DB.View(func(tx *bolt.Tx) error {
var err error
r, err = record.GetFromDBs(tx, c.Datfile)
return err
})
if err != nil {
log.Print(err)
return false
}
for _, rr := range r {
if !rr.Deleted {
return true
}
}
return false
}
//Velocity returns number of records in one days in the cache.
func (c *Cache) Velocity() int {
var r []*record.DB
err := db.DB.View(func(tx *bolt.Tx) error {
var err error
r, err = record.GetFromDBs(tx, c.Datfile)
return err
})
if err != nil {
log.Print(err)
return 0
}
cnt := 0
t := int64(time.Now().Add(-7 * 24 * time.Hour).Second())
for _, rr := range r {
if rr.Stamp > t {
cnt++
}
}
return cnt
}
//Size returns sum of body char length of records in the cache.
func (c *Cache) Size() int64 {
if c.Len() == 0 {
return 0
}
var r []*record.DB
err := db.DB.View(func(tx *bolt.Tx) error {
var err error
r, err = record.GetFromDBs(tx, c.Datfile)
return err
})
if err != nil {
log.Print(err)
return 0
}
var cnt int64
for _, rr := range r {
cnt += int64(len(rr.Body))
}
return cnt
}
//Stamp returns latest stampl of records in the cache.
func (c *Cache) Stamp() int64 {
var r []*record.DB
err := db.DB.View(func(tx *bolt.Tx) error {
var err error
r, err = record.GetFromDBs(tx, c.Datfile)
return err
})
if err != nil {
log.Print(err)
return 0
}
if len(r) == 0 {
return 0
}
var stamp int64
for i := len(r) - 1; i >= 0; i-- {
if !r[i].Deleted {
stamp = r[i].Stamp
break
}
}
return stamp
}
