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;
}
}
}
public void start() {
util.setContext(this.context);
if (fileNamePatternStr != null) {
fileNamePattern = new FileNamePattern(fileNamePatternStr, this.context);
determineCompressionMode();
} else {
addError(FNP_NOT_SET);
addError(CoreConstants.SEE_FNP_NOT_SET);
throw new IllegalStateException(FNP_NOT_SET + CoreConstants.SEE_FNP_NOT_SET);
}
if (isParentPrudent()) {
addError("Prudent mode is not supported with FixedWindowRollingPolicy.");
addError(PRUDENT_MODE_UNSUPPORTED);
throw new IllegalStateException("Prudent mode is not supported.");
}
if (getParentsRawFileProperty() == null) {
addError("The File name property must be set before using this rolling policy.");
addError(SEE_PARENT_FN_NOT_SET);
throw new IllegalStateException("The \"File\" option must be set.");
}
if (maxIndex < minIndex) {
addWarn("MaxIndex (" + maxIndex + ") cannot be smaller than MinIndex (" + minIndex + ").");
addWarn("Setting maxIndex to equal minIndex.");
maxIndex = minIndex;
}
final int maxWindowSize = getMaxWindowSize();
if ((maxIndex - minIndex) > maxWindowSize) {
addWarn("Large window sizes are not allowed.");
maxIndex = minIndex + maxWindowSize;
addWarn("MaxIndex reduced to " + maxIndex);
}
IntegerTokenConverter itc = fileNamePattern.getIntegerTokenConverter();
if (itc == null) {
throw new IllegalStateException(
"FileNamePattern ["
+ fileNamePattern.getPattern()
+ "] does not contain a valid IntegerToken");
}
if (compressionMode == CompressionMode.ZIP) {
String zipEntryFileNamePatternStr = transformFileNamePatternFromInt2Date(fileNamePatternStr);
zipEntryFileNamePattern = new FileNamePattern(zipEntryFileNamePatternStr, context);
}
compressor = new Compressor(compressionMode);
compressor.setContext(this.context);
super.start();
}