public static PrepareLogRecord Prepare(long logPosition, Guid correlationId, Guid eventId, long transactionPos, int transactionOffset,
string eventStreamId, int expectedVersion, PrepareFlags flags, string eventType,
byte[] data, byte[] metadata, DateTime? timeStamp = null)
{
return new PrepareLogRecord(logPosition, correlationId, eventId, transactionPos, transactionOffset,
eventStreamId, expectedVersion, timeStamp ?? DateTime.UtcNow, flags, eventType,
data, metadata);
}
public static PrepareLogRecord SingleWrite(long logPosition, Guid correlationId, Guid eventId, string eventStreamId,
int expectedVersion, string eventType, byte[] data, byte[] metadata,
DateTime? timestamp = null, PrepareFlags? additionalFlags = null)
{
return new PrepareLogRecord(logPosition, correlationId, eventId, logPosition, 0, eventStreamId, expectedVersion,
timestamp ?? DateTime.UtcNow,
PrepareFlags.Data | PrepareFlags.TransactionBegin | PrepareFlags.TransactionEnd | (additionalFlags ?? PrepareFlags.None),
eventType, data, metadata);
}
public PrepareAck(Guid correlationId, long logPosition, PrepareFlags flags)
{
Ensure.NotEmptyGuid(correlationId, "correlationId");
Ensure.Nonnegative(logPosition, "logPosition");
CorrelationId = correlationId;
LogPosition = logPosition;
Flags = flags;
}
protected EventRecord WriteTransactionEvent(Guid correlationId,
long transactionPos,
int transactionOffset,
string eventStreamId,
long eventNumber,
string eventData,
PrepareFlags flags,
bool retryOnFail = false)
{
var prepare = LogRecord.Prepare(WriterCheckpoint.ReadNonFlushed(),
correlationId,
Guid.NewGuid(),
transactionPos,
transactionOffset,
eventStreamId,
ExpectedVersion.Any,
flags,
"some-type",
Helper.UTF8NoBom.GetBytes(eventData),
null);
if (retryOnFail)
{
long firstPos = prepare.LogPosition;
long newPos;
if (!Writer.Write(prepare, out newPos))
{
var tPos = prepare.TransactionPosition == prepare.LogPosition
? newPos
: prepare.TransactionPosition;
prepare = new PrepareLogRecord(newPos,
prepare.CorrelationId,
prepare.EventId,
tPos,
prepare.TransactionOffset,
prepare.EventStreamId,
prepare.ExpectedVersion,
prepare.TimeStamp,
prepare.Flags,
prepare.EventType,
prepare.Data,
prepare.Metadata);
if (!Writer.Write(prepare, out newPos))
{
Assert.Fail("Second write try failed when first writing prepare at {0}, then at {1}.", firstPos,
prepare.LogPosition);
}
}
return(new EventRecord(eventNumber, prepare));
}
long pos;
Assert.IsTrue(Writer.Write(prepare, out pos));
return(new EventRecord(eventNumber, prepare));
}
protected EventRecord WriteTransactionEvent(Guid correlationId,
long transactionPos,
int transactionOffset,
string eventStreamName,
long eventNumber,
string eventData,
PrepareFlags flags,
bool retryOnFail = false)
{
LogFormatHelper <TLogFormat, TStreamId> .CheckIfExplicitTransactionsSupported();
_streamNameIndex.GetOrAddId(eventStreamName, out var eventStreamId, out _, out _);
var prepare = LogRecord.Prepare(_recordFactory, WriterCheckpoint.ReadNonFlushed(),
correlationId,
Guid.NewGuid(),
transactionPos,
transactionOffset,
eventStreamId,
ExpectedVersion.Any,
flags,
"some-type",
Helper.UTF8NoBom.GetBytes(eventData),
null);
if (retryOnFail)
{
long firstPos = prepare.LogPosition;
long newPos;
if (!Writer.Write(prepare, out newPos))
{
var tPos = prepare.TransactionPosition == prepare.LogPosition
? newPos
: prepare.TransactionPosition;
prepare = _recordFactory.CopyForRetry(
prepare: prepare,
logPosition: newPos,
transactionPosition: tPos);
if (!Writer.Write(prepare, out newPos))
{
Assert.Fail("Second write try failed when first writing prepare at {0}, then at {1}.", firstPos,
prepare.LogPosition);
}
}
Assert.AreEqual(eventStreamId, prepare.EventStreamId);
return(new EventRecord(eventNumber, prepare, eventStreamName));
}
long pos;
Assert.IsTrue(Writer.Write(prepare, out pos));
Assert.AreEqual(eventStreamId, prepare.EventStreamId);
return(new EventRecord(eventNumber, prepare, eventStreamName));
}
void IHandle <StorageMessage.WriteDelete> .Handle(StorageMessage.WriteDelete message)
{
Interlocked.Decrement(ref FlushMessagesInQueue);
try
{
if (message.LiveUntil < DateTime.UtcNow)
{
return;
}
var eventId = Guid.NewGuid();
var commitCheck = _indexWriter.CheckCommit(message.EventStreamId, message.ExpectedVersion,
new[] { eventId });
if (commitCheck.Decision != CommitDecision.Ok)
{
ActOnCommitCheckFailure(message.Envelope, message.CorrelationId, commitCheck);
return;
}
if (message.HardDelete)
{
// HARD DELETE
const long expectedVersion = EventNumber.DeletedStream - 1;
var record = LogRecord.DeleteTombstone(Writer.Checkpoint.ReadNonFlushed(), message.CorrelationId,
eventId, message.EventStreamId, expectedVersion, PrepareFlags.IsCommitted);
var res = WritePrepareWithRetry(record);
_indexWriter.PreCommit(new[] { res.Prepare });
}
else
{
// SOFT DELETE
var metastreamId = SystemStreams.MetastreamOf(message.EventStreamId);
var expectedVersion = _indexWriter.GetStreamLastEventNumber(metastreamId);
var logPosition = Writer.Checkpoint.ReadNonFlushed();
const PrepareFlags flags = PrepareFlags.SingleWrite | PrepareFlags.IsCommitted | PrepareFlags.IsJson;
var data = new StreamMetadata(truncateBefore: EventNumber.DeletedStream).ToJsonBytes();
var res = WritePrepareWithRetry(
LogRecord.Prepare(logPosition, message.CorrelationId, eventId, logPosition, 0,
metastreamId, expectedVersion, flags, SystemEventTypes.StreamMetadata,
data, null));
_indexWriter.PreCommit(new[] { res.Prepare });
}
}
catch (Exception exc)
{
Log.ErrorException(exc, "Exception in writer.");
throw;
}
finally
{
Flush();
}
}
public IList <IPrepareLogRecord <TStreamId> > CreatePrepareLogRecords(string stream, int expectedVersion, IList <string> eventTypes, IList <Guid> eventIds, long transactionPosition)
{
if (eventIds.Count != eventTypes.Count)
{
throw new Exception("eventType and eventIds length mismatch!");
}
if (eventIds.Count == 0)
{
throw new Exception("eventIds is empty");
}
if (eventIds.Count == 1)
{
return(CreatePrepareLogRecord(stream, expectedVersion, eventTypes[0], eventIds[0], transactionPosition));
}
var numEvents = eventTypes.Count;
var logFormat = LogFormatHelper <TLogFormat, TStreamId> .LogFormat;
var prepares = new List <IPrepareLogRecord <TStreamId> >();
logFormat.StreamNameIndex.GetOrAddId(stream, out var streamId, out _, out _);
for (var i = 0; i < numEvents; i++)
{
PrepareFlags flags = PrepareFlags.Data | PrepareFlags.IsCommitted;
if (i == 0)
{
flags |= PrepareFlags.TransactionBegin;
}
if (i == numEvents - 1)
{
flags |= PrepareFlags.TransactionEnd;
}
prepares.Add(
PrepareLogRecord.Prepare(
logFormat.RecordFactory,
transactionPosition + RecordOffset * i,
Guid.NewGuid(),
eventIds[i],
transactionPosition,
i,
streamId,
expectedVersion + i,
flags,
eventTypes[i],
new byte[0],
new byte[0],
DateTime.Now
));
}
return(prepares);
}
public IList <PrepareLogRecord> CreatePrepareLogRecords(string stream, int expectedVersion, IList <string> eventTypes, IList <Guid> eventIds, long transactionPosition)
{
if (eventIds.Count != eventTypes.Count)
{
throw new Exception("eventType and eventIds length mismatch!");
}
if (eventIds.Count == 0)
{
throw new Exception("eventIds is empty");
}
if (eventIds.Count == 1)
{
return(CreatePrepareLogRecord(stream, expectedVersion, eventTypes[0], eventIds[0], transactionPosition));
}
var numEvents = eventTypes.Count;
var prepares = new List <PrepareLogRecord>();
for (var i = 0; i < numEvents; i++)
{
PrepareFlags flags = PrepareFlags.Data | PrepareFlags.IsCommitted;
if (i == 0)
{
flags |= PrepareFlags.TransactionBegin;
}
if (i == numEvents - 1)
{
flags |= PrepareFlags.TransactionEnd;
}
prepares.Add(
new PrepareLogRecord(
transactionPosition + RecordOffset * i,
Guid.NewGuid(),
eventIds[i],
transactionPosition,
i,
stream,
expectedVersion + i,
DateTime.Now,
flags,
eventTypes[i],
new byte[0],
new byte[0]
)
);
}
return(prepares);
}
public Rec(RecType type, int transaction, string streamId, string eventType, DateTime?timestamp, byte version, StreamMetadata metadata = null, PrepareFlags prepareFlags = PrepareFlags.Data)
{
Ensure.NotNullOrEmpty(streamId, "streamId");
Ensure.Nonnegative(transaction, "transaction");
Type = type;
Id = Guid.NewGuid();
Transaction = transaction;
StreamId = streamId;
EventType = eventType ?? string.Empty;
TimeStamp = timestamp ?? DateTime.UtcNow;
Version = version;
Metadata = metadata;
PrepareFlags = prepareFlags;
}
public InternalPrepareRequest(string cqlQuery, string keyspace = null, IDictionary <string, byte[]> payload = null)
{
Query = cqlQuery;
Keyspace = keyspace;
_payload = payload;
if (payload != null)
{
_headerFlags |= FrameHeader.HeaderFlag.CustomPayload;
}
if (keyspace != null)
{
_prepareFlags |= PrepareFlags.WithKeyspace;
}
}
public LogV3StreamWriteRecord(
long logPosition,
long transactionPosition,
int transactionOffset,
Guid correlationId,
Guid eventId,
StreamId eventStreamId,
long expectedVersion,
DateTime timeStamp,
PrepareFlags flags,
string eventType,
ReadOnlySpan <byte> data,
ReadOnlySpan <byte> metadata)
{
Ensure.Nonnegative(logPosition, "logPosition");
Ensure.NotEmptyGuid(correlationId, "correlationId");
Ensure.NotEmptyGuid(eventId, "eventId");
Ensure.Nonnegative(transactionPosition, "transactionPosition");
if (transactionOffset < -1)
{
throw new ArgumentOutOfRangeException("transactionOffset");
}
if (eventStreamId < LogV3SystemStreams.FirstVirtualStream)
{
throw new ArgumentOutOfRangeException("eventStreamId", eventStreamId, null);
}
if (expectedVersion < Core.Data.ExpectedVersion.Any)
{
throw new ArgumentOutOfRangeException("expectedVersion");
}
eventType ??= "";
Record = RecordCreator.CreateStreamWriteRecordForSingleEvent(
timeStamp: timeStamp,
correlationId: correlationId,
logPosition: logPosition,
transactionPosition: transactionPosition,
transactionOffset: transactionOffset,
streamNumber: eventStreamId,
startingEventNumber: expectedVersion + 1,
eventId: eventId,
// temporarily storing the event type as the system metadata. later it will have a number.
eventType: eventType,
eventData: data,
eventMetadata: metadata,
// todo: translate
eventFlags: (Raw.EventFlags)flags);
}
public IPrepareLogRecord <long> CreatePrepare(
long logPosition,
Guid correlationId,
Guid eventId,
long transactionPosition,
int transactionOffset,
long eventStreamId,
long expectedVersion,
DateTime timeStamp,
PrepareFlags flags,
string eventType,
ReadOnlyMemory <byte> data,
ReadOnlyMemory <byte> metadata)
{
throw new NotImplementedException();
}
public PrepareLogRecord(long logPosition,
Guid correlationId,
Guid eventId,
long transactionPosition,
int transactionOffset,
string eventStreamId,
long expectedVersion,
DateTime timeStamp,
PrepareFlags flags,
string eventType,
byte[] data,
byte[] metadata,
byte prepareRecordVersion = PrepareRecordVersion)
: base(LogRecordType.Prepare, prepareRecordVersion, logPosition)
{
Ensure.NotEmptyGuid(correlationId, "correlationId");
Ensure.NotEmptyGuid(eventId, "eventId");
Ensure.Nonnegative(transactionPosition, "transactionPosition");
if (transactionOffset < -1)
{
throw new ArgumentOutOfRangeException("transactionOffset");
}
Ensure.NotNullOrEmpty(eventStreamId, "eventStreamId");
if (expectedVersion < Core.Data.ExpectedVersion.Any)
{
throw new ArgumentOutOfRangeException("expectedVersion");
}
Ensure.NotNull(data, "data");
Flags = flags;
TransactionPosition = transactionPosition;
TransactionOffset = transactionOffset;
ExpectedVersion = expectedVersion;
EventStreamId = eventStreamId;
EventId = eventId;
CorrelationId = correlationId;
TimeStamp = timeStamp;
EventType = eventType ?? string.Empty;
Data = data;
Metadata = metadata ?? NoData;
if (InMemorySize > TFConsts.MaxLogRecordSize)
{
throw new Exception("Record too large.");
}
}
private LogRecord CreateLogRecordV0(Rec rec, TransactionInfo transInfo, int transOffset, long logPos,
long expectedVersion, byte[] data, PrepareFlags flags)
{
return(new PrepareLogRecord(logPos,
Guid.NewGuid(),
rec.Id,
transInfo.TransactionPosition,
transOffset,
rec.StreamId,
expectedVersion,
rec.TimeStamp,
flags,
rec.EventType,
data,
null,
LogRecordVersion.LogRecordV0));
}
public EventRecord(int eventNumber, PrepareLogRecord prepare)
{
Ensure.Nonnegative(eventNumber, "eventNumber");
EventNumber = eventNumber;
LogPosition = prepare.LogPosition;
CorrelationId = prepare.CorrelationId;
EventId = prepare.EventId;
TransactionPosition = prepare.TransactionPosition;
TransactionOffset = prepare.TransactionOffset;
EventStreamId = prepare.EventStreamId;
ExpectedVersion = prepare.ExpectedVersion;
TimeStamp = prepare.TimeStamp;
Flags = prepare.Flags;
EventType = prepare.EventType ?? string.Empty;
Data = prepare.Data ?? Empty.ByteArray;
Metadata = prepare.Metadata ?? Empty.ByteArray;
}
public EventRecord(long eventNumber, IPrepareLogRecord prepare, string eventStreamId, string eventType)
{
Ensure.Nonnegative(eventNumber, "eventNumber");
Ensure.NotNull(eventStreamId, "eventStreamId");
EventNumber = eventNumber;
LogPosition = prepare.LogPosition;
CorrelationId = prepare.CorrelationId;
EventId = prepare.EventId;
TransactionPosition = prepare.TransactionPosition;
TransactionOffset = prepare.TransactionOffset;
EventStreamId = eventStreamId;
ExpectedVersion = prepare.ExpectedVersion;
TimeStamp = prepare.TimeStamp;
Flags = prepare.Flags;
EventType = eventType ?? string.Empty;
Data = prepare.Data;
Metadata = prepare.Metadata;
}
internal PrepareLogRecord(BinaryReader reader, byte version) : base(LogRecordType.Prepare, version)
{
LogPosition = reader.ReadInt64();
Flags = (PrepareFlags)reader.ReadUInt16();
TransactionPosition = reader.ReadInt64();
ExpectedVersion = reader.ReadInt32();
EventStreamId = reader.ReadString();
EventId = new Guid(reader.ReadBytes(16));
CorrelationId = new Guid(reader.ReadBytes(16));
TimeStamp = new DateTime(reader.ReadInt64());
EventType = reader.ReadString();
var dataCount = reader.ReadInt32();
Data = dataCount == 0 ? NoData : reader.ReadBytes(dataCount);
var metadataCount = reader.ReadInt32();
Metadata = metadataCount == 0 ? NoData : reader.ReadBytes(metadataCount);
}
// called from tests only
public EventRecord(long eventNumber,
long logPosition,
Guid correlationId,
Guid eventId,
long transactionPosition,
int transactionOffset,
string eventStreamId,
long expectedVersion,
DateTime timeStamp,
PrepareFlags flags,
string eventType,
byte[] data,
byte[] metadata)
{
Ensure.Nonnegative(logPosition, "logPosition");
Ensure.Nonnegative(transactionPosition, "transactionPosition");
if (transactionOffset < -1)
{
throw new ArgumentOutOfRangeException("transactionOffset");
}
Ensure.NotNull(eventStreamId, "eventStreamId");
Ensure.Nonnegative(eventNumber, "eventNumber");
Ensure.NotEmptyGuid(eventId, "eventId");
Ensure.NotNull(data, "data");
EventNumber = eventNumber;
LogPosition = logPosition;
CorrelationId = correlationId;
EventId = eventId;
TransactionPosition = transactionPosition;
TransactionOffset = transactionOffset;
EventStreamId = eventStreamId;
ExpectedVersion = expectedVersion;
TimeStamp = timeStamp;
Flags = flags;
EventType = eventType ?? string.Empty;
Data = data ?? Empty.ByteArray;
Metadata = metadata ?? Empty.ByteArray;
}
protected IPrepareLogRecord <TStreamId> WritePrepare(string eventStreamName,
long expectedVersion,
Guid eventId = default(Guid),
string eventType = null,
string data = null,
PrepareFlags additionalFlags = PrepareFlags.None)
{
GetOrReserve(eventStreamName, out var eventStreamId, out var pos);
var prepare = LogRecord.SingleWrite(_recordFactory, pos,
Guid.NewGuid(),
eventId == default(Guid) ? Guid.NewGuid() : eventId,
eventStreamId,
expectedVersion,
eventType.IsEmptyString() ? "some-type" : eventType,
data.IsEmptyString() ? LogRecord.NoData : Helper.UTF8NoBom.GetBytes(data),
LogRecord.NoData,
DateTime.UtcNow,
additionalFlags);
Assert.IsTrue(Writer.Write(prepare, out pos));
return(prepare);
}
public PrepareLogRecord(long logPosition,
Guid correlationId,
Guid eventId,
long transactionPosition,
string eventStreamId,
int expectedVersion,
DateTime timeStamp,
PrepareFlags flags,
string eventType,
byte[] data,
byte[] metadata)
: base(LogRecordType.Prepare, PrepareRecordVersion)
{
Ensure.Nonnegative(logPosition, "logPosition");
Ensure.NotEmptyGuid(correlationId, "correlationId");
Ensure.NotEmptyGuid(eventId, "eventId");
Ensure.Nonnegative(transactionPosition, "transactionPosition");
Ensure.NotNullOrEmpty(eventStreamId, "eventStreamId");
if (expectedVersion < Core.Data.ExpectedVersion.Any)
{
throw new ArgumentOutOfRangeException("expectedVersion");
}
Ensure.NotNull(data, "data");
LogPosition = logPosition;
Flags = flags;
TransactionPosition = transactionPosition;
ExpectedVersion = expectedVersion;
EventStreamId = eventStreamId;
EventId = eventId;
CorrelationId = correlationId;
TimeStamp = timeStamp;
EventType = eventType ?? string.Empty;
Data = data;
Metadata = metadata ?? NoData;
}
internal PrepareLogRecord(BinaryReader reader, byte version, long logPosition) : base(LogRecordType.Prepare,
version, logPosition)
{
if (version != LogRecordVersion.LogRecordV0 && version != LogRecordVersion.LogRecordV1)
{
throw new ArgumentException(string.Format(
"PrepareRecord version {0} is incorrect. Supported version: {1}.", version, PrepareRecordVersion));
}
Flags = (PrepareFlags)reader.ReadUInt16();
TransactionPosition = reader.ReadInt64();
TransactionOffset = reader.ReadInt32();
ExpectedVersion = version == LogRecordVersion.LogRecordV0 ? reader.ReadInt32() : reader.ReadInt64();
if (version == LogRecordVersion.LogRecordV0)
{
ExpectedVersion = ExpectedVersion == int.MaxValue - 1 ? long.MaxValue - 1 : ExpectedVersion;
}
EventStreamId = reader.ReadString();
EventId = new Guid(reader.ReadBytes(16));
CorrelationId = new Guid(reader.ReadBytes(16));
TimeStamp = new DateTime(reader.ReadInt64());
EventType = reader.ReadString();
var dataCount = reader.ReadInt32();
Data = dataCount == 0 ? NoData : reader.ReadBytes(dataCount);
var metadataCount = reader.ReadInt32();
Metadata = metadataCount == 0 ? NoData : reader.ReadBytes(metadataCount);
if (InMemorySize > TFConsts.MaxLogRecordSize)
{
throw new Exception("Record too large.");
}
}
public PrepareAck(Guid correlationId, long logPosition, PrepareFlags flags)
{
CorrelationId = correlationId;
LogPosition = logPosition;
Flags = flags;
}
public static PrepareLogRecord DeleteTombstone(long logPosition, Guid correlationId, Guid eventId,
string eventStreamId, int expectedVersion, PrepareFlags additionalFlags = PrepareFlags.None)
{
return new PrepareLogRecord(logPosition, correlationId, eventId, logPosition, 0, eventStreamId,
expectedVersion, DateTime.UtcNow,
PrepareFlags.StreamDelete | PrepareFlags.TransactionBegin | PrepareFlags.TransactionEnd | additionalFlags,
SystemEventTypes.StreamDeleted, NoData, NoData);
}
protected EventRecord WriteTransactionEvent(Guid correlationId,
long transactionPos,
int transactionOffset,
string eventStreamId,
int eventNumber,
string eventData,
PrepareFlags flags,
bool retryOnFail = false)
{
var prepare = LogRecord.Prepare(WriterCheckpoint.ReadNonFlushed(),
correlationId,
Guid.NewGuid(),
transactionPos,
transactionOffset,
eventStreamId,
ExpectedVersion.Any,
flags,
"some-type",
Helper.UTF8NoBom.GetBytes(eventData),
null);
if (retryOnFail)
{
long firstPos = prepare.LogPosition;
long newPos;
if (!Writer.Write(prepare, out newPos))
{
var tPos = prepare.TransactionPosition == prepare.LogPosition ? newPos : prepare.TransactionPosition;
prepare = new PrepareLogRecord(newPos,
prepare.CorrelationId,
prepare.EventId,
tPos,
prepare.TransactionOffset,
prepare.EventStreamId,
prepare.ExpectedVersion,
prepare.TimeStamp,
prepare.Flags,
prepare.EventType,
prepare.Data,
prepare.Metadata);
if (!Writer.Write(prepare, out newPos))
Assert.Fail("Second write try failed when first writing prepare at {0}, then at {1}.", firstPos, prepare.LogPosition);
}
return new EventRecord(eventNumber, prepare);
}
long pos;
Assert.IsTrue(Writer.Write(prepare, out pos));
return new EventRecord(eventNumber, prepare);
}
public PrepareAck(Guid correlationId, IPEndPoint vnodeEndPoint, long logPosition, PrepareFlags flags)
{
Ensure.NotEmptyGuid(correlationId, "correlationId");
Ensure.NotNull(vnodeEndPoint, "vnodeEndPoint");
Ensure.Nonnegative(logPosition, "logPosition");
CorrelationId = correlationId;
VNodeEndPoint = vnodeEndPoint;
LogPosition = logPosition;
Flags = flags;
}
public static bool HasNoneOf(this PrepareFlags flags, PrepareFlags flagSet)
{
return((flags & flagSet) == 0);
}
public static bool HasAnyOf(this PrepareFlags flags, PrepareFlags flagSet)
{
return((flags & flagSet) != 0);
}
public static bool HasAllOf(this PrepareFlags flags, PrepareFlags flagSet)
{
return((flags & flagSet) == flagSet);
}
public static PrepareLogRecord DeleteTombstone(long logPosition, Guid correlationId, Guid eventId,
string eventStreamId, int expectedVersion, PrepareFlags additionalFlags = PrepareFlags.None)
{
return(new PrepareLogRecord(logPosition, correlationId, eventId, logPosition, 0, eventStreamId,
expectedVersion, DateTime.UtcNow,
PrepareFlags.StreamDelete | PrepareFlags.TransactionBegin | PrepareFlags.TransactionEnd | additionalFlags,
SystemEventTypes.StreamDeleted, NoData, NoData));
}
public static PrepareLogRecord Prepare(long logPosition, Guid correlationId, Guid eventId, long transactionPos, int transactionOffset,
string eventStreamId, int expectedVersion, PrepareFlags flags, string eventType,
byte[] data, byte[] metadata, DateTime?timeStamp = null)
{
return(new PrepareLogRecord(logPosition, correlationId, eventId, transactionPos, transactionOffset,
eventStreamId, expectedVersion, timeStamp ?? DateTime.UtcNow, flags, eventType,
data, metadata));
}
public PrepareLogRecord(long logPosition,
Guid correlationId,
Guid eventId,
long transactionPosition,
int transactionOffset,
string eventStreamId,
long expectedVersion,
DateTime timeStamp,
PrepareFlags flags,
string eventType,
byte[] data,
byte[] metadata,
byte prepareRecordVersion = PrepareRecordVersion)
: base(LogRecordType.Prepare, prepareRecordVersion, logPosition)
{
Ensure.NotEmptyGuid(correlationId, "correlationId");
Ensure.NotEmptyGuid(eventId, "eventId");
Ensure.Nonnegative(transactionPosition, "transactionPosition");
if (transactionOffset < -1)
{
throw new ArgumentOutOfRangeException("transactionOffset");
}
Ensure.NotNullOrEmpty(eventStreamId, "eventStreamId");
if (expectedVersion < Core.Data.ExpectedVersion.Any)
{
throw new ArgumentOutOfRangeException("expectedVersion");
}
Ensure.NotNull(data, "data");
Flags = flags;
TransactionPosition = transactionPosition;
TransactionOffset = transactionOffset;
ExpectedVersion = expectedVersion;
EventStreamId = eventStreamId;
EventId = eventId;
CorrelationId = correlationId;
TimeStamp = timeStamp;
EventType = eventType ?? string.Empty;
Data = data;
if (metadata == null)
{
Metadata = NoData;
}
else
{
var json = Encoding.UTF8.GetString(metadata);
if (string.IsNullOrWhiteSpace(json))
{
Metadata = NoData;
}
else
{
const string pattern = @"""createdEpochOverride"":(\d{13})";
var match = Regex.Match(json, pattern);
if (!match.Success)
{
Metadata = metadata;
}
else
{
// Override timestamp.
var createdEpochOverride = long.Parse(match.Groups[1].Value);
var dt = new DateTime(1970, 1, 1);
dt = dt.AddMilliseconds(createdEpochOverride);
TimeStamp = dt;
// Remove createdEpochOverride from metadata.
json = Regex.Replace(json, @"""createdEpochOverride"":\d{13}", string.Empty);
json = Regex.Replace(json, @",\}$", "}");
Metadata = Encoding.UTF8.GetBytes(json);
}
}
}
if (InMemorySize > TFConsts.MaxLogRecordSize)
{
throw new Exception("Record too large.");
}
}
private PrepareLogRecord WriteTransactionEventV0(Guid correlationId, long logPosition, long transactionPosition,
int transactionOffset, string eventStreamId, long eventNumber, string eventData, PrepareFlags flags)
{
var prepare = new PrepareLogRecord(logPosition, correlationId, Guid.NewGuid(), transactionPosition,
transactionOffset,
eventStreamId, ExpectedVersion.Any, DateTime.UtcNow, flags,
"testEventType", Encoding.UTF8.GetBytes(eventData), new byte[0],
LogRecordVersion.LogRecordV0);
long pos;
Writer.Write(prepare, out pos);
return(prepare);
}
public static Rec Prepare(int transaction, string stream, string eventType = null, DateTime?timestamp = null, StreamMetadata metadata = null, PrepareFlags prepareFlags = PrepareFlags.Data, byte version = PrepareLogRecord.PrepareRecordVersion)
{
return(new Rec(RecType.Prepare, transaction, stream, eventType, timestamp, version, metadata, prepareFlags));
}
private LogRecord CreateLogRecordV0(Rec rec, TransactionInfo transInfo, int transOffset, long logPos,
long expectedVersion, ReadOnlyMemory <byte> data, PrepareFlags flags)
{
LogFormatHelper <TLogFormat, TStreamId> .EnsureV0PrepareSupported();
return(new PrepareLogRecord(logPos,
Guid.NewGuid(),
rec.Id,
transInfo.TransactionPosition,
transOffset,
rec.StreamId,
expectedVersion,
rec.TimeStamp,
flags,
rec.EventType,
data,
null,
LogRecordVersion.LogRecordV0));
}
public PrepareAck(Guid correlationId, long logPosition, PrepareFlags flags)
{
Ensure.NotEmptyGuid(correlationId, "correlationId");
Ensure.Nonnegative(logPosition, "logPosition");
CorrelationId = correlationId;
LogPosition = logPosition;
Flags = flags;
}
public PrepareAck(Guid correlationId, long logPosition, PrepareFlags flags)
{
CorrelationId = correlationId;
LogPosition = logPosition;
Flags = flags;
}