/// <exception cref="System.IO.IOException"/>
internal static OfflineEditsLoader CreateLoader(OfflineEditsVisitor visitor, string
inputFileName, bool xmlInput, OfflineEditsViewer.Flags flags)
{
if (xmlInput)
{
return(new OfflineEditsXmlLoader(visitor, new FilePath(inputFileName), flags));
}
else
{
FilePath file = null;
EditLogInputStream elis = null;
OfflineEditsLoader loader = null;
try
{
file = new FilePath(inputFileName);
elis = new EditLogFileInputStream(file, HdfsConstants.InvalidTxid, HdfsConstants.
InvalidTxid, false);
loader = new OfflineEditsBinaryLoader(visitor, elis, flags);
}
finally
{
if ((loader == null) && (elis != null))
{
elis.Close();
}
}
return(loader);
}
}
/// <summary>Process an edit log using the chosen processor or visitor.</summary>
/// <param name="inputFilename">The file to process</param>
/// <param name="outputFilename">The output file name</param>
/// <param name="processor">If visitor is null, the processor to use</param>
/// <param name="visitor">If non-null, the visitor to use.</param>
/// <returns>0 on success; error code otherwise</returns>
public virtual int Go(string inputFileName, string outputFileName, string processor
, OfflineEditsViewer.Flags flags, OfflineEditsVisitor visitor)
{
if (flags.GetPrintToScreen())
{
System.Console.Out.WriteLine("input [" + inputFileName + "]");
System.Console.Out.WriteLine("output [" + outputFileName + "]");
}
try
{
if (visitor == null)
{
visitor = OfflineEditsVisitorFactory.GetEditsVisitor(outputFileName, processor, flags
.GetPrintToScreen());
}
bool xmlInput = inputFileName.EndsWith(".xml");
OfflineEditsLoader loader = OfflineEditsLoader.OfflineEditsLoaderFactory.CreateLoader
(visitor, inputFileName, xmlInput, flags);
loader.LoadEdits();
}
catch (Exception e)
{
System.Console.Error.WriteLine("Encountered exception. Exiting: " + e.Message);
Sharpen.Runtime.PrintStackTrace(e, System.Console.Error);
return(-1);
}
return(0);
}
/// <exception cref="System.IO.FileNotFoundException"/>
public OfflineEditsXmlLoader(OfflineEditsVisitor visitor, FilePath inputFile, OfflineEditsViewer.Flags
flags)
{
this.visitor = visitor;
this.fileReader = new InputStreamReader(new FileInputStream(inputFile), Charsets.
Utf8);
this.fixTxIds = flags.GetFixTxIds();
}
/// <summary>Constructor</summary>
public OfflineEditsBinaryLoader(OfflineEditsVisitor visitor, EditLogInputStream inputStream
, OfflineEditsViewer.Flags flags)
{
this.visitor = visitor;
this.inputStream = inputStream;
this.fixTxIds = flags.GetFixTxIds();
this.recoveryMode = flags.GetRecoveryMode();
this.nextTxId = -1;
}
