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transactiondb_test.go
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transactiondb_test.go
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package grocksdb
import (
"testing"
"github.com/stretchr/testify/require"
)
func TestOpenTransactionDb(t *testing.T) {
t.Parallel()
db := newTestTransactionDB(t, nil)
defer db.Close()
}
func TestTransactionDBCRUD(t *testing.T) {
t.Parallel()
db := newTestTransactionDB(t, nil)
defer db.Close()
var (
givenKey = []byte("hello")
givenVal1 = []byte("world1")
givenVal2 = []byte("world2")
givenTxnKey = []byte("hello2")
givenTxnKey2 = []byte("hello3")
givenTxnVal1 = []byte("whatawonderful")
wo = NewDefaultWriteOptions()
ro = NewDefaultReadOptions()
to = NewDefaultTransactionOptions()
)
// create
require.Nil(t, db.Put(wo, givenKey, givenVal1))
// retrieve
v1, err := db.Get(ro, givenKey)
require.Nil(t, err)
require.EqualValues(t, v1.Data(), givenVal1)
v1.Free()
// update
require.Nil(t, db.Put(wo, givenKey, givenVal2))
v2, err := db.Get(ro, givenKey)
require.Nil(t, err)
require.EqualValues(t, v2.Data(), givenVal2)
v2.Free()
// delete
require.Nil(t, db.Delete(wo, givenKey))
v3, err := db.Get(ro, givenKey)
require.Nil(t, err)
require.True(t, v3.Data() == nil)
v3.Free()
// transaction
txn := db.TransactionBegin(wo, to, nil)
defer txn.Destroy()
// create
require.Nil(t, txn.Put(givenTxnKey, givenTxnVal1))
v4, err := txn.Get(ro, givenTxnKey)
require.Nil(t, err)
require.EqualValues(t, v4.Data(), givenTxnVal1)
v4.Free()
require.Nil(t, txn.Commit())
v5, err := db.Get(ro, givenTxnKey)
require.Nil(t, err)
require.EqualValues(t, v5.Data(), givenTxnVal1)
v5.Free()
// transaction
txn2 := db.TransactionBegin(wo, to, nil)
defer txn2.Destroy()
// create
require.Nil(t, txn2.Put(givenTxnKey2, givenTxnVal1))
// rollback
require.Nil(t, txn2.Rollback())
v6, err := txn2.Get(ro, givenTxnKey2)
require.Nil(t, err)
require.True(t, v6.Data() == nil)
v6.Free()
// transaction
txn3 := db.TransactionBegin(wo, to, nil)
defer txn3.Destroy()
require.NoError(t, txn3.SetName("fake_name"))
require.Equal(t, "fake_name", txn3.GetName())
// delete
require.Nil(t, txn3.Prepare())
require.Nil(t, txn3.Delete(givenTxnKey))
wi := txn3.GetWriteBatchWI()
require.EqualValues(t, 1, wi.Count())
require.Nil(t, txn3.Commit())
v7, err := db.Get(ro, givenTxnKey)
require.Nil(t, err)
require.True(t, v7.Data() == nil)
v7.Free()
// transaction
txn4 := db.TransactionBegin(wo, to, nil)
defer txn4.Destroy()
// mark delete
require.Nil(t, txn4.Delete(givenTxnKey))
// rebuild with put op
wi = NewWriteBatchWI(123, true)
wi.Put(givenTxnKey, givenTxnVal1)
require.Nil(t, txn4.RebuildFromWriteBatchWI(wi))
require.Nil(t, txn4.Commit())
v8, err := db.Get(ro, givenTxnKey)
require.Nil(t, err)
require.True(t, v8.Data() != nil) // due to rebuild -> put -> key exists
v8.Free()
// transaction
txn5 := db.TransactionBegin(wo, to, nil)
defer txn5.Destroy()
// mark delete
require.Nil(t, txn5.Delete(givenTxnKey2))
// rebuild with put op
wb := NewWriteBatch()
wb.Put(givenTxnKey2, givenTxnVal1)
require.Nil(t, txn5.RebuildFromWriteBatch(wb))
v, err := txn5.GetPinned(ro, givenTxnKey2)
require.Nil(t, err)
require.Equal(t, []byte(givenTxnVal1), v.Data())
v.Destroy()
require.Nil(t, txn5.Commit())
v9, err := db.Get(ro, givenTxnKey2)
require.Nil(t, err)
require.True(t, v9.Data() != nil) // due to rebuild -> put -> key exists
v9.Free()
}
func TestTransactionDBGetForUpdate(t *testing.T) {
t.Parallel()
lockTimeoutMilliSec := int64(50)
applyOpts := func(_ *Options, transactionDBOpts *TransactionDBOptions) {
transactionDBOpts.SetTransactionLockTimeout(lockTimeoutMilliSec)
}
db := newTestTransactionDB(t, applyOpts)
defer db.Close()
var (
givenKey = []byte("hello")
givenVal = []byte("world")
wo = NewDefaultWriteOptions()
ro = NewDefaultReadOptions()
to = NewDefaultTransactionOptions()
)
txn := db.TransactionBegin(wo, to, nil)
defer txn.Destroy()
v, err := txn.GetForUpdate(ro, givenKey)
require.Nil(t, err)
v.Free()
// expect lock timeout error to be thrown
if err := db.Put(wo, givenKey, givenVal); err == nil {
t.Error("expect locktime out error, got nil error")
}
base := db.GetBaseDB()
defer CloseBaseDBOfTransactionDB(base)
}
func newTestTransactionDB(t *testing.T, applyOpts func(opts *Options, transactionDBOpts *TransactionDBOptions)) *TransactionDB {
dir := t.TempDir()
opts := NewDefaultOptions()
opts.SetCreateIfMissing(true)
transactionDBOpts := NewDefaultTransactionDBOptions()
if applyOpts != nil {
applyOpts(opts, transactionDBOpts)
}
db, err := OpenTransactionDb(opts, transactionDBOpts, dir)
require.Nil(t, err)
return db
}
func TestTransactionDBColumnFamilyBatchPutGet(t *testing.T) {
t.Parallel()
dir := t.TempDir()
givenNames := []string{"default", "guide"}
opts := NewDefaultOptions()
opts.SetCreateIfMissingColumnFamilies(true)
opts.SetCreateIfMissing(true)
db, cfh, err := OpenTransactionDbColumnFamilies(opts, NewDefaultTransactionDBOptions(), dir, givenNames, []*Options{opts, opts})
require.Nil(t, err)
defer db.Close()
require.EqualValues(t, len(cfh), 2)
defer cfh[0].Destroy()
defer cfh[1].Destroy()
wo := NewDefaultWriteOptions()
defer wo.Destroy()
ro := NewDefaultReadOptions()
defer ro.Destroy()
givenKey0 := []byte("hello0")
givenVal0 := []byte("world0")
givenKey1 := []byte("hello1")
givenVal1 := []byte("world1")
givenKey2 := []byte("hello2")
givenVal2 := []byte("world2")
writeReadBatch := func(cf *ColumnFamilyHandle, keys, values [][]byte) {
b := NewWriteBatch()
defer b.Destroy()
for i := range keys {
b.PutCF(cf, keys[i], values[i])
}
require.Nil(t, db.Write(wo, b))
for i := range keys {
actualVal, err := db.GetCF(ro, cf, keys[i])
require.Nil(t, err)
require.EqualValues(t, actualVal.Data(), values[i])
actualVal.Free()
}
}
writeReadBatch(cfh[0], [][]byte{givenKey0}, [][]byte{givenVal0})
writeReadBatch(cfh[1], [][]byte{givenKey1, givenKey2}, [][]byte{givenVal1, givenVal2})
// check read from wrong CF returns nil
actualVal, err := db.GetCF(ro, cfh[0], givenKey1)
require.Nil(t, err)
require.EqualValues(t, actualVal.Size(), 0)
actualVal.Free()
actualVal, err = db.GetCF(ro, cfh[1], givenKey0)
require.Nil(t, err)
require.EqualValues(t, actualVal.Size(), 0)
actualVal.Free()
// check batch read is correct
actualVals, err := db.MultiGetWithCF(ro, cfh[1], givenKey1, givenKey2)
require.Nil(t, err)
require.EqualValues(t, len(actualVals), 2)
require.EqualValues(t, actualVals[0].Data(), givenVal1)
require.EqualValues(t, actualVals[1].Data(), givenVal2)
actualVals.Destroy()
// trigger flush
require.Nil(t, db.FlushCF(cfh[0], NewDefaultFlushOptions()))
require.Nil(t, db.FlushCFs(cfh, NewDefaultFlushOptions()))
}