private DataSet DeserializeMetadata(byte[] buffer)
{
CompressionModes compressionModes = (CompressionModes)(m_operationalModes & OperationalModes.CompressionModeMask);
bool useCommonSerializationFormat = (m_operationalModes & OperationalModes.UseCommonSerializationFormat) > 0;
bool compressMetadata = (m_operationalModes & OperationalModes.CompressMetadata) > 0;
Ticks startTime = DateTime.UtcNow.Ticks;
DataSet deserializedMetadata;
GZipStream inflater = null;
if (compressMetadata && compressionModes.HasFlag(CompressionModes.GZip))
{
try
{
// Insert compressed data into compressed buffer
using (MemoryStream compressedData = new MemoryStream(buffer))
{
inflater = new GZipStream(compressedData, CompressionMode.Decompress, true);
buffer = inflater.ReadStream();
}
}
finally
{
if ((object)inflater != null)
inflater.Close();
}
}
if (useCommonSerializationFormat)
{
// Copy decompressed data into encoded buffer
using (MemoryStream encodedData = new MemoryStream(buffer))
using (XmlTextReader xmlReader = new XmlTextReader(encodedData))
{
// Read encoded data into data set as XML
deserializedMetadata = new DataSet();
deserializedMetadata.ReadXml(xmlReader, XmlReadMode.ReadSchema);
}
}
else
{
deserializedMetadata = Serialization.Deserialize<DataSet>(buffer, SerializationFormat.Binary);
}
long rowCount = deserializedMetadata.Tables.Cast<DataTable>().Select(dataTable => (long)dataTable.Rows.Count).Sum();
if (rowCount > 0)
{
Time elapsedTime = (DateTime.UtcNow.Ticks - startTime).ToSeconds();
OnStatusMessage("Received a total of {0:N0} records spanning {1:N0} tables of meta-data that was {2}deserialized in {3}...", rowCount, deserializedMetadata.Tables.Count, compressMetadata ? "uncompressed and " : "", elapsedTime.ToString(2));
}
return deserializedMetadata;
}
private DataSet DeserializeMetadata(byte[] buffer)
{
GatewayCompressionMode gatewayCompressionMode = (GatewayCompressionMode)(m_operationalModes & OperationalModes.CompressionModeMask);
bool useCommonSerializationFormat = (m_operationalModes & OperationalModes.UseCommonSerializationFormat) > 0;
bool compressMetadata = (m_operationalModes & OperationalModes.CompressMetadata) > 0;
DataSet deserializedMetadata;
MemoryStream compressedData = null;
GZipStream inflater = null;
MemoryStream encodedData = null;
XmlTextReader unicodeReader = null;
if (compressMetadata && gatewayCompressionMode == GatewayCompressionMode.GZip)
{
try
{
// Insert compressed data into compressed buffer
compressedData = new MemoryStream(buffer);
inflater = new GZipStream(compressedData, CompressionMode.Decompress);
buffer = inflater.ReadStream();
}
finally
{
if ((object)inflater != null)
inflater.Close();
if ((object)compressedData != null)
compressedData.Close();
}
}
if (useCommonSerializationFormat)
{
try
{
// Copy decompressed data into encoded buffer
encodedData = new MemoryStream(buffer);
// Read encoded data into data set as XML
unicodeReader = new XmlTextReader(encodedData);
deserializedMetadata = new DataSet();
deserializedMetadata.ReadXml(unicodeReader, XmlReadMode.ReadSchema);
}
finally
{
if ((object)unicodeReader != null)
unicodeReader.Close();
if ((object)encodedData != null)
encodedData.Close();
}
}
else
{
deserializedMetadata = Serialization.Deserialize<DataSet>(buffer, TVA.SerializationFormat.Binary);
}
return deserializedMetadata;
}
private SignalIndexCache DeserializeSignalIndexCache(byte[] buffer)
{
CompressionModes compressionModes = (CompressionModes)(m_operationalModes & OperationalModes.CompressionModeMask);
bool useCommonSerializationFormat = (m_operationalModes & OperationalModes.UseCommonSerializationFormat) > 0;
bool compressSignalIndexCache = (m_operationalModes & OperationalModes.CompressSignalIndexCache) > 0;
SignalIndexCache deserializedCache;
GZipStream inflater = null;
if (compressSignalIndexCache && compressionModes.HasFlag(CompressionModes.GZip))
{
try
{
using (MemoryStream compressedData = new MemoryStream(buffer))
{
inflater = new GZipStream(compressedData, CompressionMode.Decompress, true);
buffer = inflater.ReadStream();
}
}
finally
{
if ((object)inflater != null)
inflater.Close();
}
}
if (useCommonSerializationFormat)
{
deserializedCache = new SignalIndexCache();
deserializedCache.Encoding = m_encoding;
deserializedCache.ParseBinaryImage(buffer, 0, buffer.Length);
}
else
{
deserializedCache = Serialization.Deserialize<SignalIndexCache>(buffer, SerializationFormat.Binary);
}
return deserializedCache;
}
private SignalIndexCache DeserializeSignalIndexCache(byte[] buffer)
{
GatewayCompressionMode gatewayCompressionMode = (GatewayCompressionMode)(m_operationalModes & OperationalModes.CompressionModeMask);
bool useCommonSerializationFormat = (m_operationalModes & OperationalModes.UseCommonSerializationFormat) > 0;
bool compressSignalIndexCache = (m_operationalModes & OperationalModes.CompressSignalIndexCache) > 0;
SignalIndexCache deserializedCache;
MemoryStream compressedData = null;
GZipStream inflater = null;
if (compressSignalIndexCache && gatewayCompressionMode == GatewayCompressionMode.GZip)
{
try
{
compressedData = new MemoryStream(buffer);
inflater = new GZipStream(compressedData, CompressionMode.Decompress);
buffer = inflater.ReadStream();
}
finally
{
if ((object)inflater != null)
inflater.Close();
if ((object)compressedData != null)
compressedData.Close();
}
}
if (useCommonSerializationFormat)
{
deserializedCache = new SignalIndexCache();
deserializedCache.Encoding = m_encoding;
deserializedCache.ParseBinaryImage(buffer, 0, buffer.Length);
}
else
{
deserializedCache = Serialization.Deserialize<SignalIndexCache>(buffer, TVA.SerializationFormat.Binary);
}
return deserializedCache;
}