blob: f2f4b7cc2753985c71b4d8f9ac42b4fcb83c85d8 (
plain) (
blame)
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
|
// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "prioritizedbucket.h"
#include <vespa/storage/bucketdb/bucketdatabase.h>
#include <boost/iterator/iterator_facade.hpp>
namespace storage::distributor {
class BucketPriorityDatabase
{
protected:
class ConstIteratorImpl
{
public:
virtual ~ConstIteratorImpl() = default;
virtual void increment() noexcept = 0;
virtual bool equal(const ConstIteratorImpl& other) const noexcept = 0;
virtual PrioritizedBucket dereference() const noexcept = 0;
};
using ConstIteratorImplPtr = std::unique_ptr<ConstIteratorImpl>;
public:
class ConstIterator
: public boost::iterator_facade<
ConstIterator,
PrioritizedBucket const,
boost::forward_traversal_tag,
PrioritizedBucket
>
{
ConstIteratorImplPtr _impl;
public:
explicit ConstIterator(ConstIteratorImplPtr impl) noexcept
: _impl(std::move(impl))
{}
ConstIterator(const ConstIterator &) = delete;
ConstIterator(ConstIterator &&) noexcept = default;
virtual ~ConstIterator() = default;
private:
friend class boost::iterator_core_access;
void increment() noexcept {
_impl->increment();
}
[[nodiscard]] bool equal(const ConstIterator& other) const noexcept {
return _impl->equal(*other._impl);
}
PrioritizedBucket dereference() const noexcept {
return _impl->dereference();
}
};
using const_iterator = ConstIterator;
virtual ~BucketPriorityDatabase() = default;
virtual const_iterator begin() const = 0;
virtual const_iterator end() const = 0;
virtual void setPriority(const PrioritizedBucket&) = 0;
};
}
|