| // Copyright (C) 2016 The Android Open Source Project |
| // |
| // Licensed 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 com.google.gerrit.server.account; |
| |
| import com.google.common.cache.CacheLoader; |
| import com.google.common.cache.LoadingCache; |
| import com.google.common.collect.ImmutableSetMultimap; |
| import com.google.common.collect.ListMultimap; |
| import com.google.common.collect.MultimapBuilder; |
| import com.google.gerrit.reviewdb.client.Account; |
| import com.google.gerrit.reviewdb.client.AccountExternalId; |
| import com.google.gerrit.reviewdb.server.ReviewDb; |
| import com.google.gerrit.server.cache.CacheModule; |
| import com.google.gwtorm.server.SchemaFactory; |
| import com.google.inject.Inject; |
| import com.google.inject.Module; |
| import com.google.inject.Singleton; |
| import com.google.inject.TypeLiteral; |
| import com.google.inject.name.Named; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.locks.Lock; |
| import java.util.concurrent.locks.ReentrantLock; |
| |
| @Singleton |
| public class ExternalIdCacheImpl implements ExternalIdCache { |
| private static final Logger log = |
| LoggerFactory.getLogger(ExternalIdCacheImpl.class); |
| |
| private static final String CACHE_NAME = "external_ids_map"; |
| |
| public static Module module() { |
| return new CacheModule() { |
| @Override |
| protected void configure() { |
| cache(CACHE_NAME, AllKey.class, |
| new TypeLiteral<ImmutableSetMultimap<Account.Id, AccountExternalId>>() {}) |
| .maximumWeight(1).loader(Loader.class); |
| |
| bind(ExternalIdCacheImpl.class); |
| bind(ExternalIdCache.class).to(ExternalIdCacheImpl.class); |
| } |
| }; |
| } |
| |
| private final LoadingCache<AllKey, |
| ImmutableSetMultimap<Account.Id, AccountExternalId>> extIdsByAccount; |
| private final Lock lock; |
| |
| @Inject |
| ExternalIdCacheImpl( |
| @Named(CACHE_NAME) LoadingCache<AllKey, |
| ImmutableSetMultimap<Account.Id, AccountExternalId>> extIdsByAccount) { |
| this.extIdsByAccount = extIdsByAccount; |
| this.lock = new ReentrantLock(true /* fair */); |
| } |
| |
| @Override |
| public void onCreate(Iterable<AccountExternalId> extIds) { |
| lock.lock(); |
| try { |
| ListMultimap<Account.Id, AccountExternalId> n = MultimapBuilder.hashKeys() |
| .arrayListValues().build(extIdsByAccount.get(AllKey.ALL)); |
| for (AccountExternalId extId : extIds) { |
| n.put(extId.getAccountId(), extId); |
| } |
| extIdsByAccount.put(AllKey.ALL, ImmutableSetMultimap.copyOf(n)); |
| } catch (ExecutionException e) { |
| log.warn("Cannot list external IDs", e); |
| } finally { |
| lock.unlock(); |
| } |
| } |
| |
| @Override |
| public void onRemove(Iterable<AccountExternalId> extIds) { |
| lock.lock(); |
| try { |
| ListMultimap<Account.Id, AccountExternalId> n = MultimapBuilder.hashKeys() |
| .arrayListValues().build(extIdsByAccount.get(AllKey.ALL)); |
| for (AccountExternalId extId : extIds) { |
| n.remove(extId.getAccountId(), extId); |
| } |
| extIdsByAccount.put(AllKey.ALL, ImmutableSetMultimap.copyOf(n)); |
| } catch (ExecutionException e) { |
| log.warn("Cannot list external IDs", e); |
| } finally { |
| lock.unlock(); |
| } |
| } |
| |
| @Override |
| public void onRemove(Account.Id accountId, |
| Iterable<AccountExternalId.Key> extIdKeys) { |
| lock.lock(); |
| try { |
| ListMultimap<Account.Id, AccountExternalId> n = MultimapBuilder.hashKeys() |
| .arrayListValues().build(extIdsByAccount.get(AllKey.ALL)); |
| for (AccountExternalId extId : byAccount(accountId)) { |
| for (AccountExternalId.Key extIdKey : extIdKeys) { |
| if (extIdKey.equals(extId.getKey())) { |
| n.remove(accountId, extId); |
| break; |
| } |
| } |
| } |
| extIdsByAccount.put(AllKey.ALL, ImmutableSetMultimap.copyOf(n)); |
| } catch (ExecutionException e) { |
| log.warn("Cannot list external IDs", e); |
| } finally { |
| lock.unlock(); |
| } |
| } |
| |
| @Override |
| public void onUpdate(AccountExternalId updatedExtId) { |
| lock.lock(); |
| try { |
| ListMultimap<Account.Id, AccountExternalId> n = MultimapBuilder.hashKeys() |
| .arrayListValues().build(extIdsByAccount.get(AllKey.ALL)); |
| for (AccountExternalId extId : byAccount(updatedExtId.getAccountId())) { |
| if (updatedExtId.getKey().equals(extId.getKey())) { |
| n.remove(updatedExtId.getAccountId(), extId); |
| break; |
| } |
| } |
| n.put(updatedExtId.getAccountId(), updatedExtId); |
| extIdsByAccount.put(AllKey.ALL, ImmutableSetMultimap.copyOf(n)); |
| } catch (ExecutionException e) { |
| log.warn("Cannot list external IDs", e); |
| } finally { |
| lock.unlock(); |
| } |
| } |
| |
| @Override |
| public Collection<AccountExternalId> byAccount(Account.Id accountId) { |
| try { |
| return extIdsByAccount.get(AllKey.ALL).get(accountId); |
| } catch (ExecutionException e) { |
| log.warn("Cannot list external ids", e); |
| return Collections.emptySet(); |
| } |
| } |
| |
| static class AllKey { |
| static final AllKey ALL = new AllKey(); |
| |
| private AllKey() { |
| } |
| } |
| |
| static class Loader |
| extends CacheLoader<AllKey, |
| ImmutableSetMultimap<Account.Id, AccountExternalId>> { |
| private final SchemaFactory<ReviewDb> schema; |
| |
| @Inject |
| Loader(SchemaFactory<ReviewDb> schema) { |
| this.schema = schema; |
| } |
| |
| @Override |
| public ImmutableSetMultimap<Account.Id, AccountExternalId> load(AllKey key) |
| throws Exception { |
| try (ReviewDb db = schema.open()) { |
| ListMultimap<Account.Id, AccountExternalId> extIdsByAccount = |
| MultimapBuilder.hashKeys().arrayListValues().build(); |
| for (AccountExternalId extId : db.accountExternalIds().all()) { |
| extIdsByAccount.put(extId.getAccountId(), extId); |
| } |
| return ImmutableSetMultimap.copyOf(extIdsByAccount); |
| } |
| } |
| } |
| } |