How to use

org.apache.hadoop.hdfs.server.namenode.QuotaCounts$Builder

constructor

public QuotaDelta() {
 counts = new QuotaCounts.Builder().build();
 updateMap = Maps.newHashMap();
 quotaDirMap = Maps.newHashMap();
}

public void addUpdatePath(INodeReference inode, QuotaCounts update) {
 QuotaCounts c = updateMap.get(inode);
 if (c == null) {
  c = new QuotaCounts.Builder().build();
  updateMap.put(inode, c);
 }
 c.add(update);
}

@Override
public void destroyAndCollectBlocks(ReclaimContext reclaimContext) {
 reclaimContext.removedINodes.add(this);
 reclaimContext.quotaDelta().add(
   new QuotaCounts.Builder().nameSpace(1).build());
}

 /** Compute quota change for converting a complete block to a UC block. */
 private static QuotaCounts computeQuotaDeltaForUCBlock(FSNamesystem fsn,
   INodeFile file) {
  final QuotaCounts delta = new QuotaCounts.Builder().build();
  final BlockInfo lastBlock = file.getLastBlock();
  if (lastBlock != null) {
   final long diff = file.getPreferredBlockSize() - lastBlock.getNumBytes();
   final short repl = lastBlock.getReplication();
   delta.addStorageSpace(diff * repl);
   final BlockStoragePolicy policy = fsn.getFSDirectory()
     .getBlockStoragePolicySuite().getPolicy(file.getStoragePolicyID());
   List<StorageType> types = policy.chooseStorageTypes(repl);
   for (StorageType t : types) {
    if (t.supportTypeQuota()) {
     delta.addTypeSpace(t, diff);
    }
   }
  }
  return delta;
 }
}

@Override
public void destroyAndCollectBlocks(ReclaimContext reclaimContext) {
 reclaimContext.quotaDelta().add(
   new QuotaCounts.Builder().nameSpace(1).build());
 final DirectoryWithSnapshotFeature sf = getDirectoryWithSnapshotFeature();
 if (sf != null) {
  sf.clear(reclaimContext, this);
 }
 for (INode child : getChildrenList(Snapshot.CURRENT_STATE_ID)) {
  child.destroyAndCollectBlocks(reclaimContext);
 }
 if (getAclFeature() != null) {
  AclStorage.removeAclFeature(getAclFeature());
 }
 clear();
 reclaimContext.removedINodes.add(this);
}

/**
 * Update usage count without replication factor change
 */
void updateCount(INodesInPath iip, long nsDelta, long ssDelta, short replication,
  boolean checkQuota) throws QuotaExceededException {
 final INodeFile fileINode = iip.getLastINode().asFile();
 EnumCounters<StorageType> typeSpaceDeltas =
  getStorageTypeDeltas(fileINode.getStoragePolicyID(), ssDelta,
    replication, replication);
 updateCount(iip, iip.length() - 1,
  new QuotaCounts.Builder().nameSpace(nsDelta).storageSpace(ssDelta * replication).
    typeSpaces(typeSpaceDeltas).build(),
   checkQuota);
}

/**
 * Update usage count with replication factor change due to setReplication
 */
void updateCount(INodesInPath iip, long nsDelta, long ssDelta, short oldRep,
  short newRep, boolean checkQuota) throws QuotaExceededException {
 final INodeFile fileINode = iip.getLastINode().asFile();
 EnumCounters<StorageType> typeSpaceDeltas =
   getStorageTypeDeltas(fileINode.getStoragePolicyID(), ssDelta, oldRep, newRep);
 updateCount(iip, iip.length() - 1,
   new QuotaCounts.Builder().nameSpace(nsDelta).
     storageSpace(ssDelta * (newRep - oldRep)).
     typeSpaces(typeSpaceDeltas).build(),
   checkQuota);
}

public QuotaCounts computeQuotaUsage4CurrentDirectory(
  BlockStoragePolicySuite bsps, byte storagePolicyId) {
 final QuotaCounts counts = new QuotaCounts.Builder().build();
 for(DirectoryDiff d : diffs) {
  for(INode deleted : d.getChildrenDiff().getDeletedUnmodifiable()) {
   final byte childPolicyId = deleted.getStoragePolicyIDForQuota(
     storagePolicyId);
   counts.add(deleted.computeQuotaUsage(bsps, childPolicyId, false,
     Snapshot.CURRENT_STATE_ID));
  }
 }
 return counts;
}

/** @return the namespace and storagespace and typespace consumed. */
public QuotaCounts getSpaceConsumed() {
 return new QuotaCounts.Builder().quotaCount(usage).build();
}

/** @return the quota set or -1 if it is not set. */
QuotaCounts getQuota() {
 return new QuotaCounts.Builder().quotaCount(this.quota).build();
}

/**
 * Get the quota set for this inode
 * @return the quota counts.  The count is -1 if it is not set.
 */
public QuotaCounts getQuotaCounts() {
 return new QuotaCounts.Builder().
   nameSpace(HdfsConstants.QUOTA_RESET).
   storageSpace(HdfsConstants.QUOTA_RESET).
   typeSpaces(HdfsConstants.QUOTA_RESET).
   build();
}

public CopyWithQuota(byte[] name, PermissionStatus permissions,
  AclFeature aclFeature, long modificationTime, long nsQuota,
  long dsQuota, EnumCounters<StorageType> typeQuotas, XAttrFeature xAttrsFeature) {
 super(name, permissions, aclFeature, modificationTime, xAttrsFeature);
 this.quota = new QuotaCounts.Builder().nameSpace(nsQuota).
   storageSpace(dsQuota).typeSpaces(typeQuotas).build();
}

public final QuotaCounts storagespaceConsumedStriped() {
 QuotaCounts counts = new QuotaCounts.Builder().build();
 for (BlockInfo b : blocks) {
  Preconditions.checkState(b.isStriped());
  long blockSize = b.isComplete() ?
    ((BlockInfoStriped)b).spaceConsumed() : getPreferredBlockSize() *
    ((BlockInfoStriped)b).getTotalBlockNum();
  counts.addStorageSpace(blockSize);
 }
 return  counts;
}

 @Override
 public QuotaCounts getQuotaCounts() {
  return new QuotaCounts.Builder().quotaCount(quota).build();
 }
}

public CopyWithQuota(INodeDirectory dir) {
 super(dir);
 Preconditions.checkArgument(dir.isQuotaSet());
 final QuotaCounts q = dir.getQuotaCounts();
 this.quota = new QuotaCounts.Builder().quotaCount(q).build();
}

@Override
public QuotaCounts getQuotaCounts() {
 return new QuotaCounts.Builder().nameSpace(-1).
   storageSpace(-1).typeSpaces(-1).build();
}

public Builder() {
 this.quota = new QuotaCounts.Builder().nameSpace(DEFAULT_NAMESPACE_QUOTA).
   storageSpace(DEFAULT_STORAGE_SPACE_QUOTA).
   typeSpaces(DEFAULT_STORAGE_SPACE_QUOTA).build();
 this.usage = new QuotaCounts.Builder().nameSpace(1).build();
}

public QuotaCounts getCountsCopy() {
 final QuotaCounts copy = new QuotaCounts.Builder().build();
 copy.add(counts);
 return copy;
}

@Override
public QuotaCounts computeQuotaUsage(BlockStoragePolicySuite bsps,
  byte blockStoragePolicyId, boolean useCache, int lastSnapshotId) {
 return new QuotaCounts.Builder().nameSpace(1).build();
}

/**
 * Returns a QuotaCounts whose value is {@code (-this)}.
 *
 * @return {@code -this}
 */
public QuotaCounts negation() {
 QuotaCounts ret = new QuotaCounts.Builder().quotaCount(this).build();
 ret.nsSsCounts.negation();
 ret.tsCounts.negation();
 return ret;
}