public void try_read_returns_record_when_writerchecksum_ahead()
{
var recordToWrite = new PrepareLogRecord(logPosition: 0,
correlationId: _correlationId,
eventId: _eventId,
transactionPosition: 0,
transactionOffset: 0,
eventStreamId: "WorldEnding",
expectedVersion: 1234,
timeStamp: new DateTime(2012, 12, 21),
flags: PrepareFlags.None,
eventType: "type",
data: new byte[] { 1, 2, 3, 4, 5 },
metadata: new byte[] { 7, 17 });
using (var fs = new FileStream(GetFilePathFor("chunk-000000.000000"), FileMode.CreateNew,
FileAccess.Write)) {
fs.SetLength(ChunkHeader.Size + ChunkFooter.Size + 10000);
var chunkHeader = new ChunkHeader(TFChunk.CurrentChunkVersion, 10000, 0, 0, false, Guid.NewGuid())
.AsByteArray();
var writer = new BinaryWriter(fs);
writer.Write(chunkHeader);
recordToWrite.WriteWithLengthPrefixAndSuffixTo(writer);
fs.Close();
}
var writerchk = new InMemoryCheckpoint(128);
var chaserchk = new InMemoryCheckpoint(Checkpoint.Chaser, 0);
var db = new TFChunkDb(TFChunkHelper.CreateDbConfig(PathName, writerchk, chaserchk));
db.Open();
var chaser = new TFChunkChaser(db, writerchk, chaserchk, false);
chaser.Open();
ILogRecord record;
var recordRead = chaser.TryReadNext(out record);
chaser.Close();
Assert.AreEqual(record.GetSizeWithLengthPrefixAndSuffix(), chaserchk.Read());
Assert.IsTrue(recordRead);
Assert.AreEqual(recordToWrite, record);
db.Close();
}
public void a_record_can_be_written()
{
var filename = GetFilePathFor("chunk-000000.000000");
var chunkHeader = new ChunkHeader(TFChunk.CurrentChunkVersion, 10000, 0, 0, false, Guid.NewGuid());
var chunkBytes = chunkHeader.AsByteArray();
var buf = new byte[ChunkHeader.Size + ChunkFooter.Size + chunkHeader.ChunkSize];
Buffer.BlockCopy(chunkBytes, 0, buf, 0, chunkBytes.Length);
File.WriteAllBytes(filename, buf);
_checkpoint = new InMemoryCheckpoint(137);
var db = new TFChunkDb(TFChunkHelper.CreateDbConfig(PathName, _checkpoint, new InMemoryCheckpoint(), chunkSize: chunkHeader.ChunkSize));
db.Open();
var bytes = new byte[3994]; // this gives exactly 4097 size of record, with 3993 (rec size 4096) everything works fine!
new Random().NextBytes(bytes);
var writer = new TFChunkWriter(db);
var record = new PrepareLogRecord(logPosition: 137,
correlationId: _correlationId,
eventId: _eventId,
transactionPosition: 789,
transactionOffset: 543,
eventStreamId: "WorldEnding",
expectedVersion: 1234,
timeStamp: new DateTime(2012, 12, 21),
flags: PrepareFlags.SingleWrite,
eventType: "type",
data: bytes,
metadata: new byte[] { 0x07, 0x17 });
long pos;
Assert.IsTrue(writer.Write(record, out pos));
writer.Close();
db.Dispose();
Assert.AreEqual(record.GetSizeWithLengthPrefixAndSuffix() + 137, _checkpoint.Read());
using (var filestream = File.Open(filename, FileMode.Open, FileAccess.Read))
{
filestream.Seek(ChunkHeader.Size + 137 + sizeof(int), SeekOrigin.Begin);
var reader = new BinaryReader(filestream);
var read = LogRecord.ReadFrom(reader);
Assert.AreEqual(record, read);
}
}
public void try_read_returns_record_when_record_bigger_than_internal_buffer()
{
var writerchk = new InMemoryCheckpoint(0);
var chaserchk = new InMemoryCheckpoint(Checkpoint.Chaser, 0);
var db = new TFChunkDb(TFChunkHelper.CreateDbConfig(PathName, writerchk, chaserchk));
db.Open();
var recordToWrite = new PrepareLogRecord(logPosition: 0,
correlationId: _correlationId,
eventId: _eventId,
transactionPosition: 0,
transactionOffset: 0,
eventStreamId: "WorldEnding",
expectedVersion: 1234,
timeStamp: new DateTime(2012, 12, 21),
flags: PrepareFlags.None,
eventType: "type",
data: new byte[9000],
metadata: new byte[] { 7, 17 });
var writer = new TFChunkWriter(db);
writer.Open();
long pos;
Assert.IsTrue(writer.Write(recordToWrite, out pos));
writer.Close();
writerchk.Write(recordToWrite.GetSizeWithLengthPrefixAndSuffix());
var reader = new TFChunkChaser(db, writerchk, chaserchk, false);
reader.Open();
LogRecord record;
var readRecord = reader.TryReadNext(out record);
reader.Close();
Assert.IsTrue(readRecord);
Assert.AreEqual(record.GetSizeWithLengthPrefixAndSuffix(), chaserchk.Read());
Assert.AreEqual(recordToWrite, record);
db.Close();
}
public override async Task TestFixtureSetUp()
{
await base.TestFixtureSetUp();
_db = new TFChunkDb(TFChunkHelper.CreateDbConfig(PathName, 0, chunkSize: 16 * 1024));
_db.Open();
var chunk = _db.Manager.GetChunkFor(0);
_p1 = LogRecord.SingleWrite(0, Guid.NewGuid(), Guid.NewGuid(), "es-to-scavenge", ExpectedVersion.Any, "et1",
new byte[2048], new byte[] { 5, 7 });
_res1 = chunk.TryAppend(_p1);
_c1 = LogRecord.Commit(_res1.NewPosition, Guid.NewGuid(), _p1.LogPosition, 0);
_cres1 = chunk.TryAppend(_c1);
_p2 = LogRecord.SingleWrite(_cres1.NewPosition,
Guid.NewGuid(), Guid.NewGuid(), "es-to-scavenge", ExpectedVersion.Any, "et1",
new byte[2048], new byte[] { 5, 7 });
_res2 = chunk.TryAppend(_p2);
_c2 = LogRecord.Commit(_res2.NewPosition, Guid.NewGuid(), _p2.LogPosition, 1);
_cres2 = chunk.TryAppend(_c2);
_p3 = LogRecord.SingleWrite(_cres2.NewPosition,
Guid.NewGuid(), Guid.NewGuid(), "es-to-scavenge", ExpectedVersion.Any, "et1",
new byte[2048], new byte[] { 5, 7 });
_res3 = chunk.TryAppend(_p3);
_c3 = LogRecord.Commit(_res3.NewPosition, Guid.NewGuid(), _p3.LogPosition, 2);
_cres3 = chunk.TryAppend(_c3);
chunk.Complete();
_originalFileSize = chunk.FileSize;
_db.Config.WriterCheckpoint.Write(chunk.ChunkHeader.ChunkEndPosition);
_db.Config.WriterCheckpoint.Flush();
_db.Config.ChaserCheckpoint.Write(chunk.ChunkHeader.ChunkEndPosition);
_db.Config.ChaserCheckpoint.Flush();
var scavenger = new TFChunkScavenger(_db, new FakeTFScavengerLog(), new FakeTableIndex(),
new FakeReadIndex(x => x == "es-to-scavenge"));
await scavenger.Scavenge(alwaysKeepScavenged : true, mergeChunks : false);
_scavengedChunk = _db.Manager.GetChunk(0);
}
public void SetUp()
{
_writerCheckpoint = new InMemoryCheckpoint();
_db = new TFChunkDb(TFChunkHelper.CreateDbConfig(PathName, _writerCheckpoint, new InMemoryCheckpoint(), 1024));
_db.Open();
_writer = new TFChunkWriter(_db);
_writer.Open();
_record = new CommitLogRecord(logPosition: 0,
correlationId: _eventId,
transactionPosition: 4321,
timeStamp: new DateTime(2012, 12, 21),
firstEventNumber: 10);
long newPos;
_writer.Write(_record, out newPos);
_writer.Flush();
}
public override void TestFixtureSetUp()
{
base.TestFixtureSetUp();
_db = new TFChunkDb(
TFChunkHelper.CreateDbConfig(PathName, 0, chunkSize: 4096));
_db.Open();
var chunk = _db.Manager.GetChunk(0);
_records = new LogRecord[RecordsCount];
_results = new RecordWriteResult[RecordsCount];
for (int i = 0; i < _records.Length - 1; ++i)
{
_records[i] = LogRecord.SingleWrite(
i == 0 ? 0 : _results[i - 1].NewPosition,
Guid.NewGuid(),
Guid.NewGuid(),
"es1",
ExpectedVersion.Any,
"et1",
new byte[] { 0, 1, 2 },
new byte[] { 5, 7 });
_results[i] = chunk.TryAppend(_records[i]);
}
_records[_records.Length - 1] = LogRecord.Prepare(
_results[_records.Length - 1 - 1].NewPosition,
Guid.NewGuid(),
Guid.NewGuid(),
_results[_records.Length - 1 - 1].NewPosition,
0,
"es1",
ExpectedVersion.Any,
PrepareFlags.Data,
"et1",
new byte[] { 0, 1, 2 },
new byte[] { 5, 7 });
_results[_records.Length - 1] = chunk.TryAppend(_records[_records.Length - 1]);
chunk.Flush();
_db.Config.WriterCheckpoint.Write(_results[RecordsCount - 1].NewPosition);
_db.Config.WriterCheckpoint.Flush();
}
public void a_record_can_be_written()
{
_checkpoint = new InMemoryCheckpoint(0);
var db = new TFChunkDb(TFChunkHelper.CreateDbConfig(PathName, _checkpoint, new InMemoryCheckpoint()));
db.Open();
var tf = new TFChunkWriter(db);
tf.Open();
var recordFactory = LogFormatHelper <TLogFormat, TStreamId> .RecordFactory;
var streamId = LogFormatHelper <TLogFormat, TStreamId> .StreamId;
var eventTypeId = LogFormatHelper <TLogFormat, TStreamId> .EventTypeId;
var record = LogRecord.Prepare(
factory: recordFactory,
logPosition: 0,
correlationId: _correlationId,
eventId: _eventId,
transactionPos: 0,
transactionOffset: 0,
eventStreamId: streamId,
expectedVersion: 1234,
timeStamp: new DateTime(2012, 12, 21),
flags: PrepareFlags.None,
eventType: eventTypeId,
data: new byte[] { 1, 2, 3, 4, 5 },
metadata: new byte[] { 7, 17 });
long tmp;
tf.Write(record, out tmp);
tf.Close();
db.Dispose();
Assert.AreEqual(record.GetSizeWithLengthPrefixAndSuffix(), _checkpoint.Read());
using (var filestream = File.Open(GetFilePathFor("chunk-000000.000000"), FileMode.Open, FileAccess.Read)) {
filestream.Position = ChunkHeader.Size;
var reader = new BinaryReader(filestream);
reader.ReadInt32();
var read = LogRecord.ReadFrom(reader, (int)reader.BaseStream.Length);
Assert.AreEqual(record, read);
}
}
public void try_read_returns_false_when_writer_checkpoint_is_zero()
{
var writerchk = new InMemoryCheckpoint(0);
var chaserchk = new InMemoryCheckpoint();
var db = new TFChunkDb(TFChunkHelper.CreateDbConfig(PathName, writerchk, chaserchk));
db.Open();
var chaser = new TFChunkChaser(db, writerchk, new InMemoryCheckpoint(), false);
chaser.Open();
ILogRecord record;
Assert.IsFalse(chaser.TryReadNext(out record));
chaser.Close();
db.Dispose();
}
public void a_record_can_be_written()
{
var filename = GetFilePathFor("chunk-000000.000000");
var chunkHeader = new ChunkHeader(TFChunk.CurrentChunkVersion, 10000, 0, 0, false, chunkId: Guid.NewGuid());
var chunkBytes = chunkHeader.AsByteArray();
var bytes = new byte[ChunkHeader.Size + 10000 + ChunkFooter.Size];
Buffer.BlockCopy(chunkBytes, 0, bytes, 0, chunkBytes.Length);
File.WriteAllBytes(filename, bytes);
_checkpoint = new InMemoryCheckpoint(137);
var db = new TFChunkDb(TFChunkHelper.CreateDbConfig(PathName, _checkpoint, new InMemoryCheckpoint()));
db.Open();
var tf = new TFChunkWriter(db);
var record = new PrepareLogRecord(logPosition: _checkpoint.Read(),
correlationId: _correlationId,
eventId: _eventId,
expectedVersion: 1234,
transactionPosition: 0,
transactionOffset: 0,
eventStreamId: "WorldEnding",
timeStamp: new DateTime(2012, 12, 21),
flags: PrepareFlags.None,
eventType: "type",
data: new byte[] { 1, 2, 3, 4, 5 },
metadata: new byte[] { 7, 17 });
long tmp;
tf.Write(record, out tmp);
tf.Close();
db.Dispose();
Assert.AreEqual(record.GetSizeWithLengthPrefixAndSuffix() + 137,
_checkpoint.Read()); //137 is fluff assigned to beginning of checkpoint
using (var filestream = File.Open(filename, FileMode.Open, FileAccess.Read)) {
filestream.Seek(ChunkHeader.Size + 137 + sizeof(int), SeekOrigin.Begin);
var reader = new BinaryReader(filestream);
var read = LogRecord.ReadFrom(reader);
Assert.AreEqual(record, read);
}
}
public void try_read_returns_false_when_writer_checksum_is_equal_to_reader_checksum()
{
var writerchk = new InMemoryCheckpoint();
var chaserchk = new InMemoryCheckpoint(Checkpoint.Chaser, 0);
var db = new TFChunkDb(TFChunkHelper.CreateDbConfig(PathName, writerchk, chaserchk));
db.Open();
writerchk.Write(12);
writerchk.Flush();
chaserchk.Write(12);
chaserchk.Flush();
var chaser = new TFChunkChaser(db, writerchk, chaserchk, false);
chaser.Open();
ILogRecord record;
Assert.IsFalse(chaser.TryReadNext(out record));
Assert.AreEqual(12, chaserchk.Read());
chaser.Close();
db.Dispose();
}
public void SetUp()
{
_writerCheckpoint = new InMemoryCheckpoint();
_db = new TFChunkDb(TFChunkHelper.CreateDbConfig(PathName, _writerCheckpoint, new InMemoryCheckpoint(), 1024));
_db.Open();
_writer = new TFChunkWriter(_db);
_writer.Open();
_record = new PrepareLogRecord(logPosition: 0,
eventId: _eventId,
correlationId: _correlationId,
transactionPosition: 0xDEAD,
transactionOffset: 0xBEEF,
eventStreamId: "WorldEnding",
expectedVersion: 1234,
timeStamp: new DateTime(2012, 12, 21),
flags: PrepareFlags.SingleWrite,
eventType: "type",
data: new byte[] { 1, 2, 3, 4, 5 },
metadata: new byte[] { 7, 17 });
long newPos;
_writer.Write(_record, out newPos);
_writer.Flush();
}
public override void TestFixtureSetUp()
{
base.TestFixtureSetUp();
_db = new TFChunkDb(TFChunkHelper.CreateDbConfig(PathName, 0, chunkSize: 4096));
_db.Open();
var chunk = _db.Manager.GetChunk(0);
_records = new LogRecord[RecordsCount];
_results = new RecordWriteResult[RecordsCount];
var pos = 0;
for (int i = 0; i < RecordsCount; ++i)
{
if (i > 0 && i % 3 == 0)
{
pos = i / 3 * _db.Config.ChunkSize;
chunk.Complete();
chunk = _db.Manager.AddNewChunk();
}
_records[i] = LogRecord.SingleWrite(pos,
Guid.NewGuid(), Guid.NewGuid(), "es1", ExpectedVersion.Any, "et1",
new byte[1200], new byte[] { 5, 7 });
_results[i] = chunk.TryAppend(_records[i]);
pos += _records[i].GetSizeWithLengthPrefixAndSuffix();
}
chunk.Flush();
_db.Config.WriterCheckpoint.Write((RecordsCount / 3) * _db.Config.ChunkSize +
_results[RecordsCount - 1].NewPosition);
_db.Config.WriterCheckpoint.Flush();
}
public void a_record_is_not_written_at_first_but_written_on_second_try()
{
var filename1 = GetFilePathFor("chunk-000000.000000");
var filename2 = GetFilePathFor("chunk-000001.000000");
var chunkHeader = new ChunkHeader(TFChunk.CurrentChunkVersion, 10000, 0, 0, false, Guid.NewGuid());
var chunkBytes = chunkHeader.AsByteArray();
var bytes = new byte[ChunkHeader.Size + 10000 + ChunkFooter.Size];
Buffer.BlockCopy(chunkBytes, 0, bytes, 0, chunkBytes.Length);
File.WriteAllBytes(filename1, bytes);
_checkpoint = new InMemoryCheckpoint(0);
var db = new TFChunkDb(TFChunkHelper.CreateDbConfig(PathName, _checkpoint, new InMemoryCheckpoint()));
db.Open();
var tf = new TFChunkWriter(db);
long pos;
var record1 = new PrepareLogRecord(logPosition: 0,
correlationId: _correlationId,
eventId: _eventId,
expectedVersion: 1234,
transactionPosition: 0,
transactionOffset: 0,
eventStreamId: "WorldEnding",
timeStamp: new DateTime(2012, 12, 21),
flags: PrepareFlags.None,
eventType: "type",
data: new byte[] { 1, 2, 3, 4, 5 },
metadata: new byte[8000]);
Assert.IsTrue(tf.Write(record1, out pos)); // almost fill up first chunk
var record2 = new PrepareLogRecord(logPosition: pos,
correlationId: _correlationId,
eventId: _eventId,
expectedVersion: 1234,
transactionPosition: pos,
transactionOffset: 0,
eventStreamId: "WorldEnding",
timeStamp: new DateTime(2012, 12, 21),
flags: PrepareFlags.None,
eventType: "type",
data: new byte[] { 1, 2, 3, 4, 5 },
metadata: new byte[8000]);
Assert.IsFalse(tf.Write(record2, out pos)); // chunk has too small space
var record3 = new PrepareLogRecord(logPosition: pos,
correlationId: _correlationId,
eventId: _eventId,
expectedVersion: 1234,
transactionPosition: pos,
transactionOffset: 0,
eventStreamId: "WorldEnding",
timeStamp: new DateTime(2012, 12, 21),
flags: PrepareFlags.None,
eventType: "type",
data: new byte[] { 1, 2, 3, 4, 5 },
metadata: new byte[2000]);
Assert.IsTrue(tf.Write(record3, out pos));
tf.Close();
db.Dispose();
Assert.AreEqual(record3.GetSizeWithLengthPrefixAndSuffix() + 10000, _checkpoint.Read());
using (var filestream = File.Open(filename2, FileMode.Open, FileAccess.Read)) {
filestream.Seek(ChunkHeader.Size + sizeof(int), SeekOrigin.Begin);
var reader = new BinaryReader(filestream);
var read = LogRecord.ReadFrom(reader);
Assert.AreEqual(record3, read);
}
}
public void a_null_chaser_checksum_throws_argument_null_exception()
{
var db = new TFChunkDb(TFChunkHelper.CreateDbConfig(PathName, 0));
Assert.Throws <ArgumentNullException>(() => new TFChunkChaser(db, new InMemoryCheckpoint(), null));
}
