// 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.common.collect.Sets;
import com.google.gerrit.reviewdb.client.Account;
import com.google.gerrit.reviewdb.client.AccountExternalId;
import com.google.gerrit.reviewdb.server.ReviewDb;
import com.google.gwtorm.server.OrmException;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
@Singleton
public class AccountResolver {
private final Realm realm;
private final AccountByEmailCache byEmail;
private final AccountCache byId;
private final Provider<ReviewDb> schema;
@Inject
AccountResolver(final Realm realm, final AccountByEmailCache byEmail,
final AccountCache byId, final Provider<ReviewDb> schema) {
this.realm = realm;
this.byEmail = byEmail;
this.byId = byId;
this.schema = schema;
}
/**
* Locate exactly one account matching the name or name/email string.
*
* @param nameOrEmail a string of the format
* "Full Name <email@example>", just the email address
* ("email@example"), a full name ("Full Name"), an account id
* ("18419") or an user name ("username").
* @return the single account that matches; null if no account matches or
* there are multiple candidates.
*/
public Account find(final String nameOrEmail) throws OrmException {
Set<Account.Id> r = findAll(nameOrEmail);
if (r.size() == 1) {
return byId.get(r.iterator().next()).getAccount();
}
Account match = null;
for (Account.Id id : r) {
Account account = byId.get(id).getAccount();
if (!account.isActive()) {
continue;
}
if (match != null) {
return null;
}
match = account;
}
return match;
}
/**
* Find all accounts matching the name or name/email string.
*
* @param nameOrEmail a string of the format
* "Full Name <email@example>", just the email address
* ("email@example"), a full name ("Full Name"), an account id
* ("18419") or an user name ("username").
* @return the accounts that match, empty collection if none. Never null.
*/
public Set<Account.Id> findAll(String nameOrEmail) throws OrmException {
Matcher m = Pattern.compile("^.* \\(([1-9][0-9]*)\\)$").matcher(nameOrEmail);
if (m.matches()) {
Account.Id id = Account.Id.parse(m.group(1));
if (exists(id)) {
return Collections.singleton(id);
} else {
return Collections.emptySet();
}
}
if (nameOrEmail.matches("^[1-9][0-9]*$")) {
Account.Id id = Account.Id.parse(nameOrEmail);
if (exists(id)) {
return Collections.singleton(id);
} else {
return Collections.emptySet();
}
}
if (nameOrEmail.matches(Account.USER_NAME_PATTERN)) {
AccountState who = byId.getByUsername(nameOrEmail);
if (who != null) {
return Collections.singleton(who.getAccount().getId());
}
}
return findAllByNameOrEmail(nameOrEmail);
}
private boolean exists(Account.Id id) throws OrmException {
return schema.get().accounts().get(id) != null;
}
/**
* Locate exactly one account matching the name or name/email string.
*
* @param nameOrEmail a string of the format
* "Full Name <email@example>", just the email address
* ("email@example"), a full name ("Full Name").
* @return the single account that matches; null if no account matches or
* there are multiple candidates.
*/
public Account findByNameOrEmail(final String nameOrEmail)
throws OrmException {
Set<Account.Id> r = findAllByNameOrEmail(nameOrEmail);
return r.size() == 1 ? byId.get(r.iterator().next()).getAccount() : null;
}
/**
* Locate exactly one account matching the name or name/email string.
*
* @param nameOrEmail a string of the format
* "Full Name <email@example>", just the email address
* ("email@example"), a full name ("Full Name").
* @return the accounts that match, empty collection if none. Never null.
*/
public Set<Account.Id> findAllByNameOrEmail(final String nameOrEmail)
throws OrmException {
final int lt = nameOrEmail.indexOf('<');
final int gt = nameOrEmail.indexOf('>');
if (lt >= 0 && gt > lt && nameOrEmail.contains("@")) {
Set<Account.Id> ids = byEmail.get(nameOrEmail.substring(lt + 1, gt));
if (ids.isEmpty() || ids.size() == 1) {
return ids;
}
// more than one match, try to return the best one
String name = nameOrEmail.substring(0, lt - 1);
Set<Account.Id> nameMatches = Sets.newHashSet();
for (Account.Id id : ids) {
Account a = byId.get(id).getAccount();
if (name.equals(a.getFullName())) {
nameMatches.add(id);
}
}
return nameMatches.isEmpty() ? ids : nameMatches;
}
if (nameOrEmail.contains("@")) {
return byEmail.get(nameOrEmail);
}
final Account.Id id = realm.lookup(nameOrEmail);
if (id != null) {
return Collections.singleton(id);
}
List<Account> m = schema.get().accounts().byFullName(nameOrEmail).toList();
if (m.size() == 1) {
return Collections.singleton(m.get(0).getId());
}
// At this point we have no clue. Just perform a whole bunch of suggestions
// and pray we come up with a reasonable result list.
//
Set<Account.Id> result = new HashSet<>();
String a = nameOrEmail;
String b = nameOrEmail + "\u9fa5";
for (Account act : schema.get().accounts().suggestByFullName(a, b, 10)) {
result.add(act.getId());
}
for (AccountExternalId extId : schema
.get()
.accountExternalIds()
.suggestByKey(
new AccountExternalId.Key(AccountExternalId.SCHEME_USERNAME, a),
new AccountExternalId.Key(AccountExternalId.SCHEME_USERNAME, b), 10)) {
result.add(extId.getAccountId());
}
for (AccountExternalId extId : schema.get().accountExternalIds()
.suggestByEmailAddress(a, b, 10)) {
result.add(extId.getAccountId());
}
return result;
}
}