1 /*
2  * ClientDBInfo.h
3  *
4  * This source file is part of the FoundationDB open source project
5  *
6  * Copyright 2013-2018 Apple Inc. and the FoundationDB project authors
7  *
8  * Licensed under the Apache License, Version 2.0 (the "License");
9  * you may not use this file except in compliance with the License.
10  * You may obtain a copy of the License at
11  *
12  *     http://www.apache.org/licenses/LICENSE-2.0
13  *
14  * Unless required by applicable law or agreed to in writing, software
15  * distributed under the License is distributed on an "AS IS" BASIS,
16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17  * See the License for the specific language governing permissions and
18  * limitations under the License.
19  */
20 
21 #ifndef FDBCLIENT_CLIENTDBINFO_H
22 #define FDBCLIENT_CLIENTDBINFO_H
23 #pragma once
24 
25 #include "fdbclient/MasterProxyInterface.h"
26 
27 // ClientDBInfo is all the information needed by a database client to access the database
28 // It is returned (and kept up to date) by the OpenDatabaseRequest interface of ClusterInterface
29 struct ClientDBInfo {
30 	UID id;  // Changes each time anything else changes
31 	vector< MasterProxyInterface > proxies;
32 	double clientTxnInfoSampleRate;
33 	int64_t clientTxnInfoSizeLimit;
ClientDBInfoClientDBInfo34 	ClientDBInfo() : clientTxnInfoSampleRate(std::numeric_limits<double>::infinity()), clientTxnInfoSizeLimit(-1) {}
35 
36 	bool operator == (ClientDBInfo const& r) const { return id == r.id; }
37 	bool operator != (ClientDBInfo const& r) const { return id != r.id; }
38 
39 	template <class Archive>
serializeClientDBInfo40 	void serialize(Archive& ar) {
41 		ASSERT( ar.protocolVersion() >= 0x0FDB00A200040001LL );
42 		serializer(ar, proxies, id, clientTxnInfoSampleRate, clientTxnInfoSizeLimit);
43 	}
44 };
45 
46 #endif
47