/// <summary>
/// Creates a new <see cref="FormatDescriptionEvent"/>.
/// </summary>
public FormatDescriptionEvent(
EventHeader header,
int binlogVersion,
string serverVersion,
ChecksumType checksumType) : base(header)
{
BinlogVersion = binlogVersion;
ServerVersion = serverVersion;
ChecksumType = checksumType;
}
/// <summary>
/// Creates a new <see cref="WriteRowsEvent"/>.
/// </summary>
public WriteRowsEvent(
EventHeader header,
long tableId,
int flags,
int columnsNumber,
bool[] columnsPresent,
IReadOnlyList <ColumnData> rows)
: base(header)
{
TableId = tableId;
Flags = flags;
ColumnsNumber = columnsNumber;
ColumnsPresent = columnsPresent;
Rows = rows;
}
/// <summary>
/// Creates a new <see cref="UpdateRowsEvent"/>.
/// </summary>
public UpdateRowsEvent(
EventHeader header,
long tableId,
int flags,
int columnsNumber,
bool[] columnsPresentBeforeUpdate,
bool[] columnsPresentAfterUpdate,
IReadOnlyList <UpdateColumnData> rows)
: base(header)
{
TableId = tableId;
Flags = flags;
ColumnsNumber = columnsNumber;
ColumnsPresentBeforeUpdate = columnsPresentBeforeUpdate;
ColumnsPresentAfterUpdate = columnsPresentAfterUpdate;
Rows = rows;
}
/// <summary>
/// Creates a new <see cref="TableMapEvent"/>.
/// </summary>
public TableMapEvent(
EventHeader header,
long tableId,
string databaseName,
string tableName,
byte[] columnTypes,
int[] columnMetadata,
bool[] nullBitmap,
TableMetadata tableMetadata) : base(header)
{
TableId = tableId;
DatabaseName = databaseName;
TableName = tableName;
ColumnTypes = columnTypes;
ColumnMetadata = columnMetadata;
NullBitmap = nullBitmap;
TableMetadata = tableMetadata;
}
/// <summary>
/// Constructs a <see cref="IBinlogEvent"/> from packet buffer.
/// </summary>
public virtual IBinlogEvent DeserializeEvent(ref PacketReader reader)
{
var eventHeader = new EventHeader(ref reader);
// Consider verifying checksum
// ChecksumType.Verify(eventBuffer, checksumBuffer);
reader.SliceFromEnd(ChecksumStrategy.Length);
IBinlogEvent binlogEvent = null;
if (EventParsers.TryGetValue(eventHeader.EventType, out var eventParser))
{
binlogEvent = eventParser.ParseEvent(eventHeader, ref reader);
}
else
{
binlogEvent = new UnknownEvent(eventHeader);
}
if (binlogEvent is FormatDescriptionEvent formatEvent)
{
ChecksumStrategy = formatEvent.ChecksumType switch
{
ChecksumType.NONE => new NoneChecksum(),
ChecksumType.CRC32 => new Crc32Checksum(),
_ => throw new InvalidOperationException("The master checksum type is not supported.")
};
}
if (binlogEvent is TableMapEvent tableMapEvent)
{
TableMapCache[tableMapEvent.TableId] = tableMapEvent;
}
return(binlogEvent);
}
}
/// <summary>
/// Creates a new <see cref="PreviousGtidsEvent"/>.
/// </summary>
public PreviousGtidsEvent(EventHeader header, GtidSet gtidSet) : base(header)
{
GtidSet = gtidSet;
}
/// <summary>
/// Creates a new <see cref="GtidListEvent"/>.
/// </summary>
public GtidListEvent(EventHeader header, List <string> gtidList) : base(header)
{
GtidList = gtidList;
}
/// <summary>
/// Creates a new <see cref="GtidListEvent"/>.
/// </summary>
public GtidListEvent(EventHeader header, GtidList gtidList) : base(header)
{
GtidList = gtidList;
}