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// Copyright (C) 2017 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.query.group;
import static com.google.common.collect.ImmutableList.toImmutableList;
import com.google.common.base.Strings;
import com.google.common.collect.Lists;
import com.google.common.primitives.Ints;
import com.google.gerrit.common.data.GroupReference;
import com.google.gerrit.index.query.LimitPredicate;
import com.google.gerrit.index.query.Predicate;
import com.google.gerrit.index.query.QueryBuilder;
import com.google.gerrit.index.query.QueryParseException;
import com.google.gerrit.reviewdb.client.Account;
import com.google.gerrit.reviewdb.client.AccountGroup;
import com.google.gerrit.server.account.AccountResolver;
import com.google.gerrit.server.account.GroupBackend;
import com.google.gerrit.server.account.GroupBackends;
import com.google.gerrit.server.account.GroupCache;
import com.google.gerrit.server.group.InternalGroup;
import com.google.gwtorm.server.OrmException;
import com.google.inject.Inject;
import java.io.IOException;
import java.util.List;
import java.util.Optional;
import java.util.Set;
import org.eclipse.jgit.errors.ConfigInvalidException;
/** Parses a query string meant to be applied to group objects. */
public class GroupQueryBuilder extends QueryBuilder<InternalGroup> {
public static final String FIELD_UUID = "uuid";
public static final String FIELD_DESCRIPTION = "description";
public static final String FIELD_INNAME = "inname";
public static final String FIELD_NAME = "name";
public static final String FIELD_OWNER = "owner";
public static final String FIELD_LIMIT = "limit";
private static final QueryBuilder.Definition<InternalGroup, GroupQueryBuilder> mydef =
new QueryBuilder.Definition<>(GroupQueryBuilder.class);
public static class Arguments {
final GroupCache groupCache;
final GroupBackend groupBackend;
final AccountResolver accountResolver;
@Inject
Arguments(GroupCache groupCache, GroupBackend groupBackend, AccountResolver accountResolver) {
this.groupCache = groupCache;
this.groupBackend = groupBackend;
this.accountResolver = accountResolver;
}
}
private final Arguments args;
@Inject
GroupQueryBuilder(Arguments args) {
super(mydef);
this.args = args;
}
@Operator
public Predicate<InternalGroup> uuid(String uuid) {
return GroupPredicates.uuid(new AccountGroup.UUID(uuid));
}
@Operator
public Predicate<InternalGroup> description(String description) throws QueryParseException {
if (Strings.isNullOrEmpty(description)) {
throw error("description operator requires a value");
}
return GroupPredicates.description(description);
}
@Operator
public Predicate<InternalGroup> inname(String namePart) {
if (namePart.isEmpty()) {
return name(namePart);
}
return GroupPredicates.inname(namePart);
}
@Operator
public Predicate<InternalGroup> name(String name) {
return GroupPredicates.name(name);
}
@Operator
public Predicate<InternalGroup> owner(String owner) throws QueryParseException {
AccountGroup.UUID groupUuid = parseGroup(owner);
return GroupPredicates.owner(groupUuid);
}
@Operator
public Predicate<InternalGroup> is(String value) throws QueryParseException {
if ("visibletoall".equalsIgnoreCase(value)) {
return GroupPredicates.isVisibleToAll();
}
throw error("Invalid query");
}
@Override
protected Predicate<InternalGroup> defaultField(String query) throws QueryParseException {
// Adapt the capacity of this list when adding more default predicates.
List<Predicate<InternalGroup>> preds = Lists.newArrayListWithCapacity(5);
preds.add(uuid(query));
preds.add(name(query));
preds.add(inname(query));
if (!Strings.isNullOrEmpty(query)) {
preds.add(description(query));
}
try {
preds.add(owner(query));
} catch (QueryParseException e) {
// Skip.
}
return Predicate.or(preds);
}
@Operator
public Predicate<InternalGroup> member(String query)
throws QueryParseException, OrmException, ConfigInvalidException, IOException {
Set<Account.Id> accounts = parseAccount(query);
List<Predicate<InternalGroup>> predicates =
accounts.stream().map(GroupPredicates::member).collect(toImmutableList());
return Predicate.or(predicates);
}
@Operator
public Predicate<InternalGroup> subgroup(String query) throws QueryParseException {
AccountGroup.UUID groupUuid = parseGroup(query);
return GroupPredicates.subgroup(groupUuid);
}
@Operator
public Predicate<InternalGroup> limit(String query) throws QueryParseException {
Integer limit = Ints.tryParse(query);
if (limit == null) {
throw error("Invalid limit: " + query);
}
return new LimitPredicate<>(FIELD_LIMIT, limit);
}
private Set<Account.Id> parseAccount(String nameOrEmail)
throws QueryParseException, OrmException, IOException, ConfigInvalidException {
Set<Account.Id> foundAccounts = args.accountResolver.findAll(nameOrEmail);
if (foundAccounts.isEmpty()) {
throw error("User " + nameOrEmail + " not found");
}
return foundAccounts;
}
private AccountGroup.UUID parseGroup(String groupNameOrUuid) throws QueryParseException {
Optional<InternalGroup> group = args.groupCache.get(new AccountGroup.UUID(groupNameOrUuid));
if (group.isPresent()) {
return group.get().getGroupUUID();
}
GroupReference groupReference =
GroupBackends.findBestSuggestion(args.groupBackend, groupNameOrUuid);
if (groupReference == null) {
throw error("Group " + groupNameOrUuid + " not found");
}
return groupReference.getUUID();
}
}
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