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// 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 static java.util.stream.Collectors.toSet;
import com.google.gerrit.reviewdb.client.Account;
import com.google.gerrit.reviewdb.server.ReviewDb;
import com.google.gerrit.server.query.account.InternalAccountQuery;
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 accountQueryProvider;
@Inject
AccountResolver(
Realm realm,
AccountByEmailCache byEmail,
AccountCache byId,
Provider accountQueryProvider) {
this.realm = realm;
this.byEmail = byEmail;
this.byId = byId;
this.accountQueryProvider = accountQueryProvider;
}
/**
* 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(ReviewDb db, String nameOrEmail) throws OrmException {
Set r = findAll(db, 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 db open database handle.
* @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 findAll(ReviewDb db, String nameOrEmail) throws OrmException {
Matcher m = Pattern.compile("^.* \\(([1-9][0-9]*)\\)$").matcher(nameOrEmail);
if (m.matches()) {
Account.Id id = Account.Id.parse(m.group(1));
if (exists(db, id)) {
return Collections.singleton(id);
}
return Collections.emptySet();
}
if (nameOrEmail.matches("^[1-9][0-9]*$")) {
Account.Id id = Account.Id.parse(nameOrEmail);
if (exists(db, id)) {
return Collections.singleton(id);
}
return Collections.emptySet();
}
if (ExternalId.isValidUsername(nameOrEmail)) {
AccountState who = byId.getByUsername(nameOrEmail);
if (who != null) {
return Collections.singleton(who.getAccount().getId());
}
}
return findAllByNameOrEmail(db, nameOrEmail);
}
private boolean exists(ReviewDb db, Account.Id id) throws OrmException {
return db.accounts().get(id) != null;
}
/**
* Locate exactly one account matching the name or name/email string.
*
* @param db open database handle.
* @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(ReviewDb db, String nameOrEmail) throws OrmException {
Set r = findAllByNameOrEmail(db, nameOrEmail);
return r.size() == 1 ? byId.get(r.iterator().next()).getAccount() : null;
}
/**
* Locate exactly one account matching the name or name/email string.
*
* @param db open database handle.
* @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 findAllByNameOrEmail(ReviewDb db, String nameOrEmail) throws OrmException {
int lt = nameOrEmail.indexOf('<');
int gt = nameOrEmail.indexOf('>');
if (lt >= 0 && gt > lt && nameOrEmail.contains("@")) {
Set 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 nameMatches = new HashSet<>();
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);
}
Account.Id id = realm.lookup(nameOrEmail);
if (id != null) {
return Collections.singleton(id);
}
List m = accountQueryProvider.get().byFullName(nameOrEmail);
if (m.size() == 1) {
return Collections.singleton(m.get(0).getAccount().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.
return accountQueryProvider
.get()
.byDefault(nameOrEmail)
.stream()
.map(a -> a.getAccount().getId())
.collect(toSet());
}
}
