| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.hadoop.hbase.quotas; |
| |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.hadoop.hbase.TableName; |
| import org.apache.hadoop.hbase.classification.InterfaceAudience; |
| import org.apache.hadoop.hbase.classification.InterfaceStability; |
| import org.apache.hadoop.hbase.protobuf.generated.QuotaProtos.Quotas; |
| import org.apache.hadoop.hbase.util.EnvironmentEdgeManager; |
| |
| /** |
| * In-Memory state of the user quotas |
| */ |
| @InterfaceAudience.Private |
| @InterfaceStability.Evolving |
| @edu.umd.cs.findbugs.annotations.SuppressWarnings(value="IS2_INCONSISTENT_SYNC", |
| justification="FindBugs seems confused; says bypassGlobals, namepaceLimiters, and " + |
| "tableLimiters are mostly synchronized...but to me it looks like they are totally synchronized") |
| public class UserQuotaState extends QuotaState { |
| private Map<String, QuotaLimiter> namespaceLimiters = null; |
| private Map<TableName, QuotaLimiter> tableLimiters = null; |
| private boolean bypassGlobals = false; |
| |
| public UserQuotaState() { |
| super(); |
| } |
| |
| public UserQuotaState(final long updateTs) { |
| super(updateTs); |
| } |
| |
| @Override |
| public synchronized String toString() { |
| StringBuilder builder = new StringBuilder(); |
| builder.append("UserQuotaState(ts=" + getLastUpdate()); |
| if (bypassGlobals) builder.append(" bypass-globals"); |
| |
| if (isBypass()) { |
| builder.append(" bypass"); |
| } else { |
| if (getGlobalLimiterWithoutUpdatingLastQuery() != NoopQuotaLimiter.get()) { |
| builder.append(" global-limiter"); |
| } |
| |
| if (tableLimiters != null && !tableLimiters.isEmpty()) { |
| builder.append(" ["); |
| for (TableName table: tableLimiters.keySet()) { |
| builder.append(" " + table); |
| } |
| builder.append(" ]"); |
| } |
| |
| if (namespaceLimiters != null && !namespaceLimiters.isEmpty()) { |
| builder.append(" ["); |
| for (String ns: namespaceLimiters.keySet()) { |
| builder.append(" " + ns); |
| } |
| builder.append(" ]"); |
| } |
| } |
| builder.append(')'); |
| return builder.toString(); |
| } |
| |
| /** |
| * @return true if there is no quota information associated to this object |
| */ |
| @Override |
| public synchronized boolean isBypass() { |
| return !bypassGlobals && |
| getGlobalLimiterWithoutUpdatingLastQuery() == NoopQuotaLimiter.get() && |
| (tableLimiters == null || tableLimiters.isEmpty()) && |
| (namespaceLimiters == null || namespaceLimiters.isEmpty()); |
| } |
| |
| public synchronized boolean hasBypassGlobals() { |
| return bypassGlobals; |
| } |
| |
| @Override |
| public synchronized void setQuotas(final Quotas quotas) { |
| super.setQuotas(quotas); |
| bypassGlobals = quotas.getBypassGlobals(); |
| } |
| |
| /** |
| * Add the quota information of the specified table. |
| * (This operation is part of the QuotaState setup) |
| */ |
| public synchronized void setQuotas(final TableName table, Quotas quotas) { |
| tableLimiters = setLimiter(tableLimiters, table, quotas); |
| } |
| |
| /** |
| * Add the quota information of the specified namespace. |
| * (This operation is part of the QuotaState setup) |
| */ |
| public void setQuotas(final String namespace, Quotas quotas) { |
| namespaceLimiters = setLimiter(namespaceLimiters, namespace, quotas); |
| } |
| |
| private <K> Map<K, QuotaLimiter> setLimiter(Map<K, QuotaLimiter> limiters, |
| final K key, final Quotas quotas) { |
| if (limiters == null) { |
| limiters = new HashMap<K, QuotaLimiter>(); |
| } |
| |
| QuotaLimiter limiter = quotas.hasThrottle() ? |
| QuotaLimiterFactory.fromThrottle(quotas.getThrottle()) : null; |
| if (limiter != null && !limiter.isBypass()) { |
| limiters.put(key, limiter); |
| } else { |
| limiters.remove(key); |
| } |
| return limiters; |
| } |
| |
| /** |
| * Perform an update of the quota state based on the other quota state object. |
| * (This operation is executed by the QuotaCache) |
| */ |
| @Override |
| public synchronized void update(final QuotaState other) { |
| super.update(other); |
| |
| if (other instanceof UserQuotaState) { |
| UserQuotaState uOther = (UserQuotaState)other; |
| tableLimiters = updateLimiters(tableLimiters, uOther.tableLimiters); |
| namespaceLimiters = updateLimiters(namespaceLimiters, uOther.namespaceLimiters); |
| bypassGlobals = uOther.bypassGlobals; |
| } else { |
| tableLimiters = null; |
| namespaceLimiters = null; |
| bypassGlobals = false; |
| } |
| } |
| |
| private static <K> Map<K, QuotaLimiter> updateLimiters(final Map<K, QuotaLimiter> map, |
| final Map<K, QuotaLimiter> otherMap) { |
| if (map == null) { |
| return otherMap; |
| } |
| |
| if (otherMap != null) { |
| // To Remove |
| Set<K> toRemove = new HashSet<K>(map.keySet()); |
| toRemove.removeAll(otherMap.keySet()); |
| map.keySet().removeAll(toRemove); |
| |
| // To Update/Add |
| for (final Map.Entry<K, QuotaLimiter> entry: otherMap.entrySet()) { |
| QuotaLimiter limiter = map.get(entry.getKey()); |
| if (limiter == null) { |
| limiter = entry.getValue(); |
| } else { |
| limiter = QuotaLimiterFactory.update(limiter, entry.getValue()); |
| } |
| map.put(entry.getKey(), limiter); |
| } |
| return map; |
| } |
| return null; |
| } |
| |
| /** |
| * Return the limiter for the specified table associated with this quota. |
| * If the table does not have its own quota limiter the global one will be returned. |
| * In case there is no quota limiter associated with this object a noop limiter will be returned. |
| * |
| * @return the quota limiter for the specified table |
| */ |
| public synchronized QuotaLimiter getTableLimiter(final TableName table) { |
| lastQuery = EnvironmentEdgeManager.currentTime(); |
| if (tableLimiters != null) { |
| QuotaLimiter limiter = tableLimiters.get(table); |
| if (limiter != null) return limiter; |
| } |
| if (namespaceLimiters != null) { |
| QuotaLimiter limiter = namespaceLimiters.get(table.getNamespaceAsString()); |
| if (limiter != null) return limiter; |
| } |
| return getGlobalLimiterWithoutUpdatingLastQuery(); |
| } |
| } |