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/**
* Copyright (C) 2022-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 "mongo/db/auth/authorization_session.h"
#include "mongo/db/commands.h"
#include "mongo/db/db_raii.h"
#include "mongo/db/s/shard_key_index_util.h"
#include "mongo/logv2/log.h"
#include "mongo/s/analyze_shard_key_cmd_gen.h"
#include "mongo/s/analyze_shard_key_feature_flag_gen.h"
#define MONGO_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kCommand
namespace mongo {
namespace {
void validateCommandOptions(OperationContext* opCtx,
const NamespaceString& nss,
const KeyPattern& key) {
uassert(ErrorCodes::CommandNotSupportedOnView,
"Cannot analyze a shard key for a view",
!CollectionCatalog::get(opCtx)->lookupView(opCtx, nss));
AutoGetCollectionForReadCommand collection(opCtx, nss);
uassert(ErrorCodes::NamespaceNotFound,
str::stream() << "Cannot analyze a shard key for a non-existing collection",
collection);
}
class AnalyzeShardKeyCmd : public TypedCommand<AnalyzeShardKeyCmd> {
public:
using Request = AnalyzeShardKey;
using Response = AnalyzeShardKeyResponse;
class Invocation final : public InvocationBase {
public:
using InvocationBase::InvocationBase;
Response typedRun(OperationContext* opCtx) {
uassert(ErrorCodes::IllegalOperation,
"analyzeShardKey command is not supported on a configsvr mongod",
serverGlobalParams.clusterRole != ClusterRole::ConfigServer);
const auto& nss = ns();
const auto& key = request().getKey();
validateCommandOptions(opCtx, nss, key);
LOGV2(6875001, "Start analyzing shard key", "nss"_attr = nss, "key"_attr = key);
return {};
}
private:
NamespaceString ns() const override {
return request().getCommandParameter();
}
bool supportsWriteConcern() const override {
return false;
}
void doCheckAuthorization(OperationContext* opCtx) const override {
uassert(ErrorCodes::Unauthorized,
"Unauthorized",
AuthorizationSession::get(opCtx->getClient())
->isAuthorizedForActionsOnResource(ResourcePattern::forExactNamespace(ns()),
ActionType::shardCollection));
}
};
AllowedOnSecondary secondaryAllowed(ServiceContext*) const override {
return AllowedOnSecondary::kAlways;
}
bool maintenanceOk() const override {
return false;
}
bool adminOnly() const override {
return true;
}
std::string help() const override {
return "Returns metrics for evaluating a shard key for a collection.";
}
};
MONGO_REGISTER_FEATURE_FLAGGED_COMMAND(AnalyzeShardKeyCmd,
analyze_shard_key::gFeatureFlagAnalyzeShardKey);
} // namespace
} // namespace mongo
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