public override void Ingress <T>(DryadLinqContext context,
IEnumerable <T> source,
Uri dataSetUri,
DryadLinqMetaData metaData,
CompressionScheme compressionScheme,
bool isTemp,
Expression <Action <IEnumerable <T>, Stream> > serializer)
{
string fileName = dataSetUri.LocalPath;
if (!String.IsNullOrEmpty(dataSetUri.Host))
{
fileName = @"\\" + dataSetUri.Host + fileName;
}
// Write the partition:
string partDir = Path.GetDirectoryName(fileName);
partDir = Path.Combine(partDir, DryadLinqUtil.MakeUniqueName());
Directory.CreateDirectory(partDir);
string uncPath = Path.Combine(partDir, "Part");
string partitionPath = uncPath + ".00000000";
DryadLinqFactory <T> factory = (DryadLinqFactory <T>)DryadLinqCodeGen.GetFactory(context, typeof(T));
using (FileStream fstream = new FileStream(partitionPath, FileMode.CreateNew, FileAccess.Write))
{
if (serializer == null)
{
DryadLinqFileBlockStream nativeStream = new DryadLinqFileBlockStream(fstream, compressionScheme);
DryadLinqRecordWriter <T> writer = factory.MakeWriter(nativeStream);
foreach (T rec in source)
{
writer.WriteRecordSync(rec);
}
writer.Close();
}
else
{
Action <IEnumerable <T>, Stream> serializerFunc = serializer.Compile();
serializerFunc(source, fstream);
}
}
// Write the partfile:
long partSize = new FileInfo(partitionPath).Length;
using (StreamWriter writer = File.CreateText(fileName))
{
writer.WriteLine(uncPath);
writer.WriteLine("1");
writer.WriteLine("{0},{1}", 0, partSize);
}
}
public override void Ingress <T>(DryadLinqContext context,
IEnumerable <T> source,
Uri dataSetUri,
DryadLinqMetaData metaData,
CompressionScheme compressionScheme,
bool isTemp = false)
{
// Write the partition:
string partDir = context.PartitionUncPath;
if (partDir == null)
{
partDir = Path.GetDirectoryName(dataSetUri.LocalPath);
}
if (!Path.IsPathRooted(partDir))
{
partDir = Path.Combine("/", partDir);
}
partDir = Path.Combine(partDir, DryadLinqUtil.MakeUniqueName());
Directory.CreateDirectory(partDir);
string partPath = Path.Combine(partDir, "Part");
string partFilePath = partPath + ".00000000";
DryadLinqFactory <T> factory = (DryadLinqFactory <T>)DryadLinqCodeGen.GetFactory(context, typeof(T));
using (FileStream fstream = new FileStream(partFilePath, FileMode.CreateNew, FileAccess.Write))
{
DryadLinqFileBlockStream nativeStream = new DryadLinqFileBlockStream(fstream, compressionScheme);
DryadLinqRecordWriter <T> writer = factory.MakeWriter(nativeStream);
foreach (T rec in source)
{
writer.WriteRecordSync(rec);
}
writer.Close();
}
// Write the partfile:
FileInfo finfo = new FileInfo(partFilePath);
using (StreamWriter writer = File.CreateText(dataSetUri.LocalPath))
{
writer.WriteLine(partPath);
writer.WriteLine("1");
writer.WriteLine("{0},{1},{2}", 0, finfo.Length, Environment.MachineName);
}
}
