/*
  Copyright (c) 2020 Sogou, Inc.

  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.
*/

#ifndef __RPC_GLOBAL_H__
#define __RPC_GLOBAL_H__

#include <random>
#include <workflow/URIParser.h>
#include "rpc_options.h"
#include "rpc_module.h"

namespace srpc
{

class SRPCGlobal
{
public:
	static SRPCGlobal *get_instance()
	{
		static SRPCGlobal kInstance;

		return &kInstance;
	}

public:
	const char *get_srpc_version() const;

	bool task_init(RPCClientParams& params, ParsedURI& uri,
				   struct sockaddr_storage *ss, socklen_t *ss_len) const;

	unsigned long long get_random();
	void set_group_id(unsigned short id) { this->group_id = id; }
	void set_machine_id(unsigned short id) { this->machine_id = id; }

private:
	SRPCGlobal();
	SnowFlake snowflake;
	std::random_device rd;
	std::mt19937 gen;
	unsigned short group_id;
	unsigned short machine_id;
};

} // namespace srpc

#endif