MySQL 8.3.0
Source Code Documentation
dest_next_available.h
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1/*
2 Copyright (c) 2017, 2023, Oracle and/or its affiliates.
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License, version 2.0,
6 as published by the Free Software Foundation.
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8 This program is also distributed with certain software (including
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13 separately licensed software that they have included with MySQL.
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16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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23*/
24
25#ifndef ROUTING_DEST_NEXT_AVAILABLE
26#define ROUTING_DEST_NEXT_AVAILABLE
27
28#include "destination.h" // Destinations
29#include "mysqlrouter/routing.h" // RouteDestination
30
31class DestNextAvailable final : public RouteDestination {
32 public:
34
35 Destinations destinations() override;
36
37 // first valid index
38 size_t valid_ndx() const noexcept { return valid_ndx_; }
39
40 // mark index as invalid
41 void mark_ndx_invalid(size_t ndx) noexcept {
42 if (ndx + 1 > valid_ndx_) {
43 valid_ndx_ = ndx + 1;
44 }
45 }
46
49 }
50
51 private:
52 size_t valid_ndx_{};
53};
54
55#endif // ROUTING_DEST_NEXT_AVAILABLE
Definition: dest_next_available.h:31
size_t valid_ndx_
Definition: dest_next_available.h:52
Destinations destinations() override
get destinations to connect() to.
Definition: dest_next_available.cc:55
size_t valid_ndx() const noexcept
Definition: dest_next_available.h:38
void mark_ndx_invalid(size_t ndx) noexcept
Definition: dest_next_available.h:41
routing::RoutingStrategy get_strategy() override
Return our routing strategy.
Definition: dest_next_available.h:47
A forward iterable container of destinations.
Definition: destination.h:106
Manage destinations for a Connection Routing.
Definition: destination.h:187
RouteDestination(net::io_context &io_ctx, Protocol::Type protocol=Protocol::get_default())
Default constructor.
Definition: destination.h:197
RoutingStrategy
Routing strategies supported by Routing plugin.
Definition: routing.h:152