public SelectMapedBufferResult getData(final long offset, final boolean returnFirstOnNotFound) {
int mapedFileSize =
this.defaultMessageStore.getMessageStoreConfig().getMapedFileSizeCommitLog();
MapedFile mapedFile = this.mapedFileQueue.findMapedFileByOffset(offset, returnFirstOnNotFound);
if (mapedFile != null) {
int pos = (int) (offset % mapedFileSize);
SelectMapedBufferResult result = mapedFile.selectMapedBuffer(pos);
return result;
}
return null;
}
/** 读取消息 */
public SelectMapedBufferResult getMessage(final long offset, final int size) {
int mapedFileSize =
this.defaultMessageStore.getMessageStoreConfig().getMapedFileSizeCommitLog();
MapedFile mapedFile =
this.mapedFileQueue.findMapedFileByOffset(offset, (0 == offset ? true : false));
if (mapedFile != null) {
int pos = (int) (offset % mapedFileSize);
SelectMapedBufferResult result = mapedFile.selectMapedBuffer(pos, size);
return result;
}
return null;
}
