public void rollover() throws RolloverFailure {
// Inside this method it is guaranteed that the hereto active log file is
// closed.
// If maxIndex <= 0, then there is no file renaming to be done.
if (maxIndex >= 0) {
// Delete the oldest file, to keep Windows happy.
File file = new File(fileNamePattern.convertInt(maxIndex));
if (file.exists()) {
file.delete();
}
// Map {(maxIndex - 1), ..., minIndex} to {maxIndex, ..., minIndex+1}
for (int i = maxIndex - 1; i >= minIndex; i--) {
String toRenameStr = fileNamePattern.convertInt(i);
File toRename = new File(toRenameStr);
// no point in trying to rename an inexistent file
if (toRename.exists()) {
util.rename(toRenameStr, fileNamePattern.convertInt(i + 1));
} else {
addInfo("Skipping roll-over for inexistent file " + toRenameStr);
}
}
// move active file name to min
switch (compressionMode) {
case NONE:
util.rename(getActiveFileName(), fileNamePattern.convertInt(minIndex));
break;
case GZ:
compressor.compress(getActiveFileName(), fileNamePattern.convertInt(minIndex), null);
break;
case ZIP:
compressor.compress(
getActiveFileName(),
fileNamePattern.convertInt(minIndex),
zipEntryFileNamePattern.convert(new Date()));
break;
}
}
}
