public void SetKeyPrefixInOneTransaction() { using (IKeyValueDB db = new ArtInMemoryKeyValueDB(_allocator)) { var key = new byte[5]; var value = new byte[100]; var rnd = new Random(); using (var tr = db.StartTransaction()) { for (byte i = 0; i < 100; i++) { key[0] = i; for (byte j = 0; j < 100; j++) { key[4] = j; rnd.NextBytes(value); tr.CreateOrUpdateKeyValue(key, value); } } tr.Commit(); } using (var tr = db.StartTransaction()) { for (byte i = 0; i < 100; i++) { key[0] = i; tr.SetKeyPrefix(ByteBuffer.NewSync(key, 0, 4)); Assert.Equal(100, tr.GetKeyValueCount()); } } } }
public void TwoTransactions() { using (IKeyValueDB db = new ArtInMemoryKeyValueDB(_allocator)) { using (var tr1 = db.StartTransaction()) { tr1.CreateKey(_key1); tr1.Commit(); } using (var tr2 = db.StartTransaction()) { tr2.CreateKey(_key2); Assert.True(tr2.FindExactKey(_key1)); Assert.True(tr2.FindExactKey(_key2)); Assert.False(tr2.FindExactKey(_key3)); tr2.Commit(); } using (var tr3 = db.StartTransaction()) { Assert.True(tr3.FindExactKey(_key1)); Assert.True(tr3.FindExactKey(_key2)); Assert.False(tr3.FindExactKey(_key3)); } } }
public void SetKeyIndexWorks() { using (IKeyValueDB db = new ArtInMemoryKeyValueDB(_allocator)) { var key = new byte[2]; const int keysCreated = 10000; using (var tr = db.StartTransaction()) { for (int i = 0; i < keysCreated; i++) { key[0] = (byte)(i / 256); key[1] = (byte)(i % 256); tr.CreateKey(key); } tr.Commit(); } using (var tr = db.StartTransaction()) { Assert.False(tr.SetKeyIndex(keysCreated)); for (int i = 0; i < keysCreated; i += 5) { Assert.True(tr.SetKeyIndex(i)); key = tr.GetKeyAsByteArray(); Assert.Equal((byte)(i / 256), key[0]); Assert.Equal((byte)(i % 256), key[1]); Assert.Equal(i, tr.GetKeyIndex()); } } } }
public void OnlyOneWritingTransactionPossible2() { using (IKeyValueDB db = new ArtInMemoryKeyValueDB(_allocator)) { var tr1 = db.StartTransaction(); tr1.CreateKey(_key1); using (var tr2 = db.StartTransaction()) { tr1.Commit(); tr1.Dispose(); Assert.False(tr2.FindExactKey(_key1)); Assert.Throws <BTDBTransactionRetryException>(() => tr2.CreateKey(_key2)); } } }
public void RollbackWorks() { using (IKeyValueDB db = new ArtInMemoryKeyValueDB(_allocator)) { using (var tr1 = db.StartTransaction()) { tr1.CreateKey(_key1); // Rollback because of missing commit } using (var tr2 = db.StartTransaction()) { Assert.Equal(0, tr2.GetTransactionNumber()); Assert.False(tr2.FindExactKey(_key1)); } } }
public void CommitWithUlongWorks() { using (IKeyValueDB db = new ArtInMemoryKeyValueDB(_allocator)) { using (var tr1 = db.StartTransaction()) { Assert.Equal(0ul, tr1.GetCommitUlong()); tr1.SetCommitUlong(42); tr1.Commit(); } using (var tr2 = db.StartTransaction()) { Assert.Equal(42ul, tr2.GetCommitUlong()); } } }
public void MultipleTransactions2(int transactionCount) { using (IKeyValueDB db = new ArtInMemoryKeyValueDB(_allocator)) { var key = new byte[2 + transactionCount * 10]; for (int i = 0; i < transactionCount; i++) { key[0] = (byte)((transactionCount - i) / 256); key[1] = (byte)((transactionCount - i) % 256); using (var tr1 = db.StartTransaction()) { tr1.CreateOrUpdateKeyValue(ByteBuffer.NewSync(key, 0, 2 + i * 10), ByteBuffer.NewEmpty()); if (i % 100 == 0 || i == transactionCount - 1) { for (int j = 0; j < i; j++) { key[0] = (byte)((transactionCount - j) / 256); key[1] = (byte)((transactionCount - j) % 256); Assert.Equal(FindResult.Exact, tr1.Find(ByteBuffer.NewSync(key, 0, 2 + j * 10))); } } tr1.Commit(); } } } }
public void StartWritingTransactionWorks() { using (IKeyValueDB db = new ArtInMemoryKeyValueDB(_allocator)) { var tr1 = db.StartWritingTransaction().Result; var tr2Task = db.StartWritingTransaction(); var task = Task.Factory.StartNew(() => { var tr2 = tr2Task.Result; Assert.True(tr2.FindExactKey(_key1)); tr2.CreateKey(_key2); tr2.Commit(); tr2.Dispose(); }); tr1.CreateKey(_key1); tr1.Commit(); tr1.Dispose(); task.Wait(1000); using (var tr = db.StartTransaction()) { Assert.True(tr.FindExactKey(_key1)); Assert.True(tr.FindExactKey(_key2)); } } }
public void EmptyTransaction() { using (IKeyValueDB db = new ArtInMemoryKeyValueDB(_allocator)) { using (var tr = db.StartTransaction()) { tr.Commit(); } } }
public void FindKeyWithPreferPreviousKeyWorks() { const int keyCount = 10000; using (IKeyValueDB db = new ArtInMemoryKeyValueDB(_allocator)) { using (var tr = db.StartTransaction()) { var key = new byte[100]; for (int i = 0; i < keyCount; i++) { key[0] = (byte)(i / 256); key[1] = (byte)(i % 256); tr.CreateKey(key); } tr.Commit(); } using (var tr = db.StartTransaction()) { var key = new byte[101]; for (int i = 0; i < keyCount; i++) { key[0] = (byte)(i / 256); key[1] = (byte)(i % 256); var findKeyResult = tr.Find(ByteBuffer.NewSync(key)); Assert.Equal(FindResult.Previous, findKeyResult); Assert.Equal(i, tr.GetKeyIndex()); } } using (var tr = db.StartTransaction()) { var key = new byte[99]; for (int i = 0; i < keyCount; i++) { key[0] = (byte)(i / 256); key[1] = (byte)(i % 256); var findKeyResult = tr.Find(ByteBuffer.NewSync(key)); Assert.Equal(FindResult.Next, findKeyResult); Assert.Equal(i, tr.GetKeyIndex()); } } } }
public void FirstTransaction() { using (IKeyValueDB db = new ArtInMemoryKeyValueDB(_allocator)) { using (var tr = db.StartTransaction()) { Assert.True(tr.CreateOrUpdateKeyValue(ByteBuffer.NewAsync(_key1), ByteBuffer.NewAsync(new byte[0]))); tr.Commit(); } } }
public void SimpleFindNextKeyWorks() { using (IKeyValueDB db = new ArtInMemoryKeyValueDB(_allocator)) { using (var tr1 = db.StartTransaction()) { tr1.CreateKey(_key1); tr1.CreateKey(_key2); tr1.CreateKey(_key3); tr1.Commit(); } using (var tr2 = db.StartTransaction()) { Assert.True(tr2.FindExactKey(_key3)); Assert.True(tr2.FindNextKey()); Assert.Equal(_key2, tr2.GetKeyAsByteArray()); Assert.False(tr2.FindNextKey()); } } }
public void CompressibleValueLoad() { using (IKeyValueDB db = new ArtInMemoryKeyValueDB(_allocator)) { using (var tr = db.StartTransaction()) { tr.CreateOrUpdateKeyValue(_key1, new byte[1000]); Assert.Equal(new byte[1000], tr.GetValueAsByteArray()); tr.Commit(); } } }
public void CommitWorks() { using (IKeyValueDB db = new ArtInMemoryKeyValueDB(_allocator)) { using (var tr1 = db.StartTransaction()) { tr1.CreateKey(_key1); using (var tr2 = db.StartTransaction()) { Assert.Equal(0, tr2.GetTransactionNumber()); Assert.False(tr2.FindExactKey(_key1)); } tr1.Commit(); } using (var tr3 = db.StartTransaction()) { Assert.Equal(1, tr3.GetTransactionNumber()); Assert.True(tr3.FindExactKey(_key1)); } } }
void AdvancedEraseRangeWorksCore(int createKeys, int removeStart, int removeCount) { using (IKeyValueDB db = new ArtInMemoryKeyValueDB(_allocator)) { var key = new byte[2]; using (var tr = db.StartTransaction()) { for (int i = 0; i < createKeys; i++) { key[0] = (byte)(i / 256); key[1] = (byte)(i % 256); tr.CreateKey(key); } tr.Commit(); } using (var tr = db.StartTransaction()) { tr.EraseRange(removeStart, removeStart + removeCount - 1); Assert.Equal(createKeys - removeCount, tr.GetKeyValueCount()); tr.Commit(); } using (var tr = db.StartTransaction()) { Assert.Equal(createKeys - removeCount, tr.GetKeyValueCount()); for (int i = 0; i < createKeys; i++) { key[0] = (byte)(i / 256); key[1] = (byte)(i % 256); if (i >= removeStart && i < removeStart + removeCount) { Assert.False(tr.FindExactKey(key), $"{i} should be removed"); } else { Assert.True(tr.FindExactKey(key), $"{i} should be found"); } } } } }
public void CanGetSizeOfPair() { using (IKeyValueDB db = new ArtInMemoryKeyValueDB(_allocator)) { using (var tr = db.StartTransaction()) { tr.CreateOrUpdateKeyValue(ByteBuffer.NewAsync(_key1), ByteBuffer.NewAsync(new byte[1])); var s = tr.GetStorageSizeOfCurrentKey(); Assert.Equal(_key1.Length, (int)s.Key); Assert.Equal(1u, s.Value); } } }
public void BiggerKey(int keyLength) { var key = new byte[keyLength]; for (int i = 0; i < keyLength; i++) { key[i] = (byte)i; } using (IKeyValueDB db = new ArtInMemoryKeyValueDB(_allocator)) { using (var tr1 = db.StartTransaction()) { tr1.CreateKey(key); tr1.Commit(); } using (var tr2 = db.StartTransaction()) { Assert.True(tr2.FindExactKey(key)); Assert.Equal(key, tr2.GetKeyAsByteArray()); } } }
public void AdvancedFindPreviousAndNextKeyWorks() { using (IKeyValueDB db = new ArtInMemoryKeyValueDB(_allocator)) { var key = new byte[2]; const int keysCreated = 10000; using (var tr = db.StartTransaction()) { for (int i = 0; i < keysCreated; i++) { key[0] = (byte)(i / 256); key[1] = (byte)(i % 256); tr.CreateKey(key); } tr.Commit(); } using (var tr = db.StartTransaction()) { Assert.Equal(-1, tr.GetKeyIndex()); tr.FindExactKey(key); Assert.Equal(keysCreated - 1, tr.GetKeyIndex()); for (int i = 1; i < keysCreated; i++) { Assert.True(tr.FindPreviousKey()); Assert.Equal(keysCreated - 1 - i, tr.GetKeyIndex()); } Assert.False(tr.FindPreviousKey()); Assert.Equal(-1, tr.GetKeyIndex()); for (int i = 0; i < keysCreated; i++) { Assert.True(tr.FindNextKey()); Assert.Equal(i, tr.GetKeyIndex()); } Assert.False(tr.FindNextKey()); Assert.Equal(-1, tr.GetKeyIndex()); } } }
public void CreateOrUpdateKeyValueWorks(int length) { var valbuf = new byte[length]; new Random(0).NextBytes(valbuf); using (IKeyValueDB db = new ArtInMemoryKeyValueDB(_allocator)) { using (var tr1 = db.StartTransaction()) { Assert.True(tr1.CreateOrUpdateKeyValueUnsafe(_key1, valbuf)); Assert.False(tr1.CreateOrUpdateKeyValueUnsafe(_key1, valbuf)); Assert.True(tr1.CreateOrUpdateKeyValueUnsafe(_key2, valbuf)); tr1.Commit(); } using (var tr2 = db.StartTransaction()) { Assert.True(tr2.FindExactKey(_key1)); var valbuf2 = tr2.GetValueAsByteArray(); for (int i = 0; i < length; i++) { if (valbuf[i] != valbuf2[i]) { Assert.Equal(valbuf[i], valbuf2[i]); } } Assert.True(tr2.FindExactKey(_key2)); valbuf2 = tr2.GetValueAsByteArray(); for (int i = 0; i < length; i++) { if (valbuf[i] != valbuf2[i]) { Assert.Equal(valbuf[i], valbuf2[i]); } } } } }
public void PrefixWithFindPrevKeyWorks() { using (IKeyValueDB db = new ArtInMemoryKeyValueDB(_allocator)) { using (var tr = db.StartTransaction()) { tr.CreateKey(_key1); tr.CreateKey(_key2); tr.SetKeyPrefix(ByteBuffer.NewAsync(_key2, 0, 1)); Assert.True(tr.FindFirstKey()); Assert.False(tr.FindPreviousKey()); tr.Commit(); } } }
public void FindLastKeyWorks() { using (IKeyValueDB db = new ArtInMemoryKeyValueDB(_allocator)) { using (var tr = db.StartTransaction()) { Assert.False(tr.FindLastKey()); tr.CreateKey(_key1); tr.CreateKey(_key2); tr.CreateKey(_key3); Assert.True(tr.FindLastKey()); Assert.Equal(_key2, tr.GetKeyAsByteArray()); tr.Commit(); } } }
public void ALotOf5KBTransactionsWorks() { using (IKeyValueDB db = new ArtInMemoryKeyValueDB(_allocator)) { for (int i = 0; i < 5000; i++) { var key = new byte[5000]; using (var tr = db.StartTransaction()) { key[0] = (byte)(i / 256); key[1] = (byte)(i % 256); Assert.True(tr.CreateKey(key)); tr.Commit(); } } } }
public void MoreComplexTransaction() { using (IKeyValueDB db = new ArtInMemoryKeyValueDB(_allocator)) { using (var tr = db.StartTransaction()) { Assert.True(tr.CreateOrUpdateKeyValue(ByteBuffer.NewAsync(_key1), ByteBuffer.NewAsync(new byte[0]))); Assert.False(tr.CreateOrUpdateKeyValue(ByteBuffer.NewAsync(_key1), ByteBuffer.NewAsync(new byte[0]))); Assert.Equal(FindResult.Previous, tr.Find(ByteBuffer.NewAsync(_key2))); Assert.True(tr.CreateOrUpdateKeyValue(ByteBuffer.NewAsync(_key2), ByteBuffer.NewAsync(new byte[0]))); Assert.Equal(FindResult.Exact, tr.Find(ByteBuffer.NewAsync(_key1))); Assert.Equal(FindResult.Exact, tr.Find(ByteBuffer.NewAsync(_key2))); Assert.Equal(FindResult.Previous, tr.Find(ByteBuffer.NewAsync(_key3))); Assert.Equal(FindResult.Next, tr.Find(ByteBuffer.NewEmpty())); tr.Commit(); } } }
public void SimpleEraseCurrentWorks() { using (IKeyValueDB db = new ArtInMemoryKeyValueDB(_allocator)) { using (var tr = db.StartTransaction()) { tr.CreateKey(_key1); tr.CreateKey(_key2); tr.CreateKey(_key3); tr.EraseCurrent(); Assert.True(tr.FindFirstKey()); Assert.Equal(_key1, tr.GetKeyAsByteArray()); Assert.True(tr.FindNextKey()); Assert.Equal(_key2, tr.GetKeyAsByteArray()); Assert.False(tr.FindNextKey()); Assert.Equal(2, tr.GetKeyValueCount()); } } }
public void SimplePrefixWorks() { using (IKeyValueDB db = new ArtInMemoryKeyValueDB(_allocator)) { using (var tr = db.StartTransaction()) { tr.CreateKey(_key1); tr.CreateKey(_key2); tr.CreateKey(_key3); Assert.Equal(3, tr.GetKeyValueCount()); tr.SetKeyPrefix(ByteBuffer.NewAsync(_key1, 0, 3)); Assert.Equal(2, tr.GetKeyValueCount()); tr.FindFirstKey(); Assert.Equal(new byte[0], tr.GetKeyAsByteArray()); tr.FindLastKey(); Assert.Equal(_key3.Skip(3).ToArray(), tr.GetKeyAsByteArray()); tr.Commit(); } } }