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boltdb_stats_issue.go
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/
boltdb_stats_issue.go
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package main
import (
"fmt"
"github.com/boltdb/bolt"
"log"
"os"
)
func numKeys(bucket *bolt.Bucket) int {
stats := bucket.Stats()
return stats.KeyN
}
func main() {
filename := "boltdb_stats_issue.db"
os.Remove(filename)
db, err := bolt.Open(filename, 0600, nil)
if err != nil {
log.Fatal(err)
}
defer db.Close()
_ = db.Update(func(tx *bolt.Tx) error {
bucket, err := tx.CreateBucketIfNotExists([]byte("test"))
if err != nil {
return err
}
// no keys yet, expect 0
fmt.Println("expected 0, got ", numKeys(bucket))
bucket.Put([]byte("key1"), []byte("hello"))
// just added 1 key, expect stats to return 1 but it returns 0
fmt.Println("expected 1, got ", numKeys(bucket))
return nil
})
_ = db.View(func(tx *bolt.Tx) error {
bucket := tx.Bucket([]byte("test"))
// update tx finished, stats now returns 1 for number of keys
fmt.Println("expected 1, got ", numKeys(bucket))
return nil
})
}