summaryrefslogtreecommitdiff
path: root/src/mongo/s/chunk.cpp
blob: d5b2a388613b8db3c4bee39983156574cc07f7bb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93

/**
 *    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.
 */

#define MONGO_LOG_DEFAULT_COMPONENT ::mongo::logger::LogComponent::kSharding

#include "mongo/platform/basic.h"

#include "mongo/s/chunk.h"

#include "mongo/platform/random.h"
#include "mongo/s/chunk_writes_tracker.h"
#include "mongo/util/mongoutils/str.h"

namespace mongo {

ChunkInfo::ChunkInfo(const ChunkType& from)
    : _range(from.getMin(), from.getMax()),
      _shardId(from.getShard()),
      _lastmod(from.getVersion()),
      _history(from.getHistory()),
      _jumbo(from.getJumbo()),
      _writesTracker(std::make_shared<ChunkWritesTracker>()) {
    invariant(from.validate());
    if (!_history.empty()) {
        invariant(_shardId == _history.front().getShard());
    }
}

const ShardId& ChunkInfo::getShardIdAt(const boost::optional<Timestamp>& ts) const {
    // This chunk was refreshed from FCV 3.6 config server so it doesn't have history
    if (_history.empty()) {
        // TODO: SERVER-34619 - add uassert
        return _shardId;
    }

    // If the tiemstamp is not provided than we return the latest shardid
    if (!ts) {
        invariant(_shardId == _history.front().getShard());
        return _history.front().getShard();
    }

    for (const auto& h : _history) {
        if (h.getValidAfter() <= ts) {
            return h.getShard();
        }
    }

    uasserted(ErrorCodes::StaleChunkHistory,
              str::stream() << "Cant find shardId the chunk belonged to at cluster time "
                            << ts.get().toString());
}

bool ChunkInfo::containsKey(const BSONObj& shardKey) const {
    return getMin().woCompare(shardKey) <= 0 && shardKey.woCompare(getMax()) < 0;
}

std::string ChunkInfo::toString() const {
    return str::stream() << ChunkType::shard() << ": " << _shardId << ", " << ChunkType::lastmod()
                         << ": " << _lastmod.toString() << ", " << _range.toString();
}

void ChunkInfo::markAsJumbo() {
    _jumbo = true;
}

}  // namespace mongo