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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include "mongo/platform/basic.h"
#include <vector>
#include "mongo/db/auth/action_set.h"
#include "mongo/db/auth/action_type.h"
#include "mongo/db/auth/privilege.h"
#include "mongo/db/catalog/collection.h"
#include "mongo/db/catalog/database.h"
#include "mongo/db/catalog/index_catalog.h"
#include "mongo/db/commands.h"
#include "mongo/db/curop.h"
#include "mongo/db/db_raii.h"
#include "mongo/db/index/haystack_access_method.h"
#include "mongo/db/index/index_access_method.h"
#include "mongo/db/index/index_descriptor.h"
#include "mongo/db/index_names.h"
#include "mongo/db/jsobj.h"
#include "mongo/db/namespace_string.h"
#include "mongo/db/query/find_common.h"
/**
* Examines all documents in a given radius of a given point.
* Returns all documents that match a given search restriction.
* See http://dochub.mongodb.org/core/haystackindexes
*
* Use when you want to look for restaurants within 25 miles with a certain name.
* Don't use when you want to find the closest open restaurants.
*/
namespace mongo {
using std::string;
using std::vector;
class GeoHaystackSearchCommand : public ErrmsgCommandDeprecated {
public:
GeoHaystackSearchCommand() : ErrmsgCommandDeprecated("geoSearch") {}
virtual bool supportsWriteConcern(const BSONObj& cmd) const override {
return false;
}
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return AllowedOnSecondary::kAlways;
}
bool supportsReadConcern(const std::string& dbName,
const BSONObj& cmdObj,
repl::ReadConcernLevel level) const final {
return true;
}
ReadWriteType getReadWriteType() const {
return ReadWriteType::kRead;
}
std::size_t reserveBytesForReply() const override {
return FindCommon::kInitReplyBufferSize;
}
virtual void addRequiredPrivileges(const std::string& dbname,
const BSONObj& cmdObj,
std::vector<Privilege>* out) const {
ActionSet actions;
actions.addAction(ActionType::find);
out->push_back(Privilege(parseResourcePattern(dbname, cmdObj), actions));
}
bool errmsgRun(OperationContext* opCtx,
const string& dbname,
const BSONObj& cmdObj,
string& errmsg,
BSONObjBuilder& result) {
const NamespaceString nss = CommandHelpers::parseNsCollectionRequired(dbname, cmdObj);
AutoGetCollectionForReadCommand ctx(opCtx, nss);
// Check whether we are allowed to read from this node after acquiring our locks.
auto replCoord = repl::ReplicationCoordinator::get(opCtx);
uassertStatusOK(replCoord->checkCanServeReadsFor(
opCtx, nss, ReadPreferenceSetting::get(opCtx).canRunOnSecondary()));
Collection* collection = ctx.getCollection();
if (!collection) {
errmsg = "can't find ns";
return false;
}
vector<const IndexDescriptor*> idxs;
collection->getIndexCatalog()->findIndexByType(opCtx, IndexNames::GEO_HAYSTACK, idxs);
if (idxs.size() == 0) {
errmsg = "no geoSearch index";
return false;
}
if (idxs.size() > 1) {
errmsg = "more than 1 geosearch index";
return false;
}
BSONElement nearElt = cmdObj["near"];
BSONElement maxDistance = cmdObj["maxDistance"];
BSONElement search = cmdObj["search"];
uassert(13318, "near needs to be an array", nearElt.isABSONObj());
uassert(13319, "maxDistance needs a number", maxDistance.isNumber());
uassert(13320, "search needs to be an object", search.type() == Object);
unsigned limit = 50;
if (cmdObj["limit"].isNumber())
limit = static_cast<unsigned>(cmdObj["limit"].numberInt());
const IndexDescriptor* desc = idxs[0];
auto ham = static_cast<const HaystackAccessMethod*>(
collection->getIndexCatalog()->getEntry(desc)->accessMethod());
ham->searchCommand(opCtx,
collection,
nearElt.Obj(),
maxDistance.numberDouble(),
search.Obj(),
&result,
limit);
return 1;
}
} nameSearchCommand;
} // namespace mongo
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