/**
* Adds the metadata of a new block into this storage dir or throws IOException.
*
* @param tempBlockMeta the meta data of a temp block to add
* @throws IOException if blockId already exists or not enough space
*/
public void addTempBlockMeta(TempBlockMeta tempBlockMeta) throws IOException {
Preconditions.checkNotNull(tempBlockMeta);
long userId = tempBlockMeta.getUserId();
long blockId = tempBlockMeta.getBlockId();
long blockSize = tempBlockMeta.getBlockSize();
if (getAvailableBytes() < blockSize) {
throw new IOException(
"Failed to add TempBlockMeta: blockId "
+ blockId
+ " is "
+ blockSize
+ " bytes, but only "
+ getAvailableBytes()
+ " bytes available");
}
if (hasTempBlockMeta(blockId)) {
throw new IOException("Failed to add TempBlockMeta: blockId " + blockId + " exists");
}
mBlockIdToTempBlockMap.put(blockId, tempBlockMeta);
Set<Long> userTempBlocks = mUserIdToTempBlockIdsMap.get(userId);
if (userTempBlocks == null) {
mUserIdToTempBlockIdsMap.put(userId, Sets.newHashSet(blockId));
} else {
userTempBlocks.add(blockId);
}
reserveSpace(blockSize, false);
}
/**
* Changes the size of a temp block or throws IOException.
*
* @param tempBlockMeta the meta data of the temp block to resize
* @param newSize the new size after change in bytes
* @throws IOException
*/
public void resizeTempBlockMeta(TempBlockMeta tempBlockMeta, long newSize) throws IOException {
long oldSize = tempBlockMeta.getBlockSize();
tempBlockMeta.setBlockSize(newSize);
if (newSize > oldSize) {
reserveSpace(newSize - oldSize, false);
} else if (newSize < oldSize) {
throw new IOException("Shrinking block, not supported!");
}
}
/**
* Adds the metadata of a new block into this storage dir or throws IOException.
*
* @param blockMeta the meta data of the block
* @throws IOException if blockId already exists or not enough space
*/
public void addBlockMeta(BlockMeta blockMeta) throws IOException {
Preconditions.checkNotNull(blockMeta);
long blockId = blockMeta.getBlockId();
long blockSize = blockMeta.getBlockSize();
if (getAvailableBytes() < blockSize) {
throw new IOException(
"Failed to add BlockMeta: blockId "
+ blockId
+ " is "
+ blockSize
+ " bytes, but only "
+ getAvailableBytes()
+ " bytes available");
}
if (hasBlockMeta(blockId)) {
throw new IOException("Failed to add BlockMeta: blockId " + blockId + " exists");
}
mBlockIdToBlockMap.put(blockId, blockMeta);
reserveSpace(blockSize, true);
}