| // Copyright (C) 2009 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.gerrit.reviewdb.Account; |
| import com.google.gerrit.reviewdb.AccountExternalId; |
| import com.google.gerrit.reviewdb.ReviewDb; |
| import com.google.gerrit.server.cache.Cache; |
| import com.google.gerrit.server.cache.CacheModule; |
| import com.google.gerrit.server.cache.EntryCreator; |
| import com.google.gwtorm.client.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 java.util.Collections; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| /** Translates an email address to a set of matching accounts. */ |
| @Singleton |
| public class AccountByEmailCacheImpl implements AccountByEmailCache { |
| private static final String CACHE_NAME = "accounts_byemail"; |
| |
| public static Module module() { |
| return new CacheModule() { |
| @Override |
| protected void configure() { |
| final TypeLiteral<Cache<String, Set<Account.Id>>> type = |
| new TypeLiteral<Cache<String, Set<Account.Id>>>() {}; |
| core(type, CACHE_NAME).populateWith(Loader.class); |
| bind(AccountByEmailCacheImpl.class); |
| bind(AccountByEmailCache.class).to(AccountByEmailCacheImpl.class); |
| } |
| }; |
| } |
| |
| private final Cache<String, Set<Account.Id>> cache; |
| |
| @Inject |
| AccountByEmailCacheImpl( |
| @Named(CACHE_NAME) final Cache<String, Set<Account.Id>> cache) { |
| this.cache = cache; |
| } |
| |
| public Set<Account.Id> get(final String email) { |
| return cache.get(email); |
| } |
| |
| public void evict(final String email) { |
| cache.remove(email); |
| } |
| |
| static class Loader extends EntryCreator<String, Set<Account.Id>> { |
| private final SchemaFactory<ReviewDb> schema; |
| |
| @Inject |
| Loader(final SchemaFactory<ReviewDb> schema) { |
| this.schema = schema; |
| } |
| |
| @Override |
| public Set<Account.Id> createEntry(final String email) throws Exception { |
| final ReviewDb db = schema.open(); |
| try { |
| final HashSet<Account.Id> r = new HashSet<Account.Id>(); |
| for (Account a : db.accounts().byPreferredEmail(email)) { |
| r.add(a.getId()); |
| } |
| for (AccountExternalId a : db.accountExternalIds() |
| .byEmailAddress(email)) { |
| r.add(a.getAccountId()); |
| } |
| return pack(r); |
| } finally { |
| db.close(); |
| } |
| } |
| |
| @Override |
| public Set<Account.Id> missing(final String key) { |
| return Collections.emptySet(); |
| } |
| |
| private static Set<Account.Id> pack(final Set<Account.Id> c) { |
| switch (c.size()) { |
| case 0: |
| return Collections.emptySet(); |
| case 1: |
| return one(c); |
| default: |
| return Collections.unmodifiableSet(new HashSet<Account.Id>(c)); |
| } |
| } |
| |
| private static <T> Set<T> one(final Set<T> c) { |
| return Collections.singleton(c.iterator().next()); |
| } |
| } |
| } |