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1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | /* | |
4 | * Ceph distributed storage system | |
5 | * | |
6 | * Copyright (C) 2013,2014 Cloudwatt <libre.licensing@cloudwatt.com> | |
7 | * Copyright (C) 2014 Red Hat <contact@redhat.com> | |
8 | * | |
9 | * Author: Loic Dachary <loic@dachary.org> | |
10 | * | |
11 | * This library is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU Lesser General Public | |
13 | * License as published by the Free Software Foundation; either | |
14 | * version 2.1 of the License, or (at your option) any later version. | |
15 | * | |
16 | */ | |
17 | ||
18 | #ifndef CEPH_ERASURE_CODE_PLUGIN_H | |
19 | #define CEPH_ERASURE_CODE_PLUGIN_H | |
20 | ||
21 | #include "common/Mutex.h" | |
22 | #include "ErasureCodeInterface.h" | |
23 | ||
24 | extern "C" { | |
25 | const char *__erasure_code_version(); | |
26 | int __erasure_code_init(char *plugin_name, char *directory); | |
27 | } | |
28 | ||
29 | namespace ceph { | |
30 | ||
31 | class ErasureCodePlugin { | |
32 | public: | |
33 | void *library; | |
34 | ||
35 | ErasureCodePlugin() : | |
36 | library(0) {} | |
37 | virtual ~ErasureCodePlugin() {} | |
38 | ||
39 | virtual int factory(const std::string &directory, | |
40 | ErasureCodeProfile &profile, | |
41 | ErasureCodeInterfaceRef *erasure_code, | |
31f18b77 | 42 | std::ostream *ss) = 0; |
7c673cae FG |
43 | }; |
44 | ||
45 | class ErasureCodePluginRegistry { | |
46 | public: | |
47 | Mutex lock; | |
48 | bool loading; | |
49 | bool disable_dlclose; | |
50 | std::map<std::string,ErasureCodePlugin*> plugins; | |
51 | ||
52 | static ErasureCodePluginRegistry singleton; | |
53 | ||
54 | ErasureCodePluginRegistry(); | |
55 | ~ErasureCodePluginRegistry(); | |
56 | ||
57 | static ErasureCodePluginRegistry &instance() { | |
58 | return singleton; | |
59 | } | |
60 | ||
61 | int factory(const std::string &plugin, | |
62 | const std::string &directory, | |
63 | ErasureCodeProfile &profile, | |
64 | ErasureCodeInterfaceRef *erasure_code, | |
31f18b77 | 65 | std::ostream *ss); |
7c673cae FG |
66 | |
67 | int add(const std::string &name, ErasureCodePlugin *plugin); | |
68 | int remove(const std::string &name); | |
69 | ErasureCodePlugin *get(const std::string &name); | |
70 | ||
71 | int load(const std::string &plugin_name, | |
72 | const std::string &directory, | |
73 | ErasureCodePlugin **plugin, | |
31f18b77 | 74 | std::ostream *ss); |
7c673cae FG |
75 | |
76 | int preload(const std::string &plugins, | |
77 | const std::string &directory, | |
31f18b77 | 78 | std::ostream *ss); |
7c673cae FG |
79 | }; |
80 | } | |
81 | ||
82 | #endif |