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| author | Loic Dachary <loic@dachary.org> | 2013-08-28 15:46:34 +0200 |
|---|---|---|
| committer | Loic Dachary <loic@dachary.org> | 2013-09-09 23:28:37 +0200 |
| commit | b61369c80317738a4fd066ff45d11e7054ddc914 (patch) | |
| tree | d49b30c4beeaa1b095c9934622ffc85a082c80d0 | |
| parent | 640f2f213f345bd35d57b38f14fbe5a9b38c11cf (diff) | |
| download | ceph-b61369c80317738a4fd066ff45d11e7054ddc914.tar.gz | |
ErasureCodePlugin: plugin interface
When dynamically loaded, a plugin is expected to define
int __erasure_code_init(char *plugin_name);
When called, it is responsible for registering an ErasureCodePlugin
derived object that provides a factory method from which the concrete
implementation of the ErasureCodeInterface object can be generated:
virtual int factory(const map<std::string,std::string> ¶meters,
ErasureCodeInterfaceRef *erasure_code) {
*erasure_code = ErasureCodeInterfaceRef(new ErasureCodeExample(parameters));
return 0;
}
The plugin instance contains the library data member which is used to
store the handle of the shared library. It is opaque to the plugin.
http://tracker.ceph.com/issues/5878 refs #5878
Signed-off-by: Loic Dachary <loic@dachary.org>
| -rw-r--r-- | src/osd/ErasureCodePlugin.h | 42 | ||||
| -rw-r--r-- | src/osd/Makefile.am | 1 |
2 files changed, 43 insertions, 0 deletions
diff --git a/src/osd/ErasureCodePlugin.h b/src/osd/ErasureCodePlugin.h new file mode 100644 index 00000000000..4c210d698d1 --- /dev/null +++ b/src/osd/ErasureCodePlugin.h @@ -0,0 +1,42 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +/* + * Ceph - scalable distributed file system + * + * Copyright (C) 2013 Cloudwatt <libre.licensing@cloudwatt.com> + * + * Author: Loic Dachary <loic@dachary.org> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + */ + +#ifndef CEPH_ERASURE_CODE_PLUGIN_H +#define CEPH_ERASURE_CODE_PLUGIN_H + +#include "ErasureCodeInterface.h" + +extern "C" { + int __erasure_code_init(char *plugin_name); +} + +namespace ceph { + + class ErasureCodePlugin { + public: + void *library; + + ErasureCodePlugin() : + library(0) {} + virtual ~ErasureCodePlugin() {} + + virtual int factory(const map<std::string,std::string> ¶meters, + ErasureCodeInterfaceRef *erasure_code) = 0; + }; + +} + +#endif diff --git a/src/osd/Makefile.am b/src/osd/Makefile.am index 6aaf8466670..382085f5f16 100644 --- a/src/osd/Makefile.am +++ b/src/osd/Makefile.am @@ -18,6 +18,7 @@ noinst_HEADERS += \ osd/Ager.h \ osd/ClassHandler.h \ osd/ErasureCodeInterface.h \ + osd/ErasureCodePlugin.h \ osd/OSD.h \ osd/OSDCap.h \ osd/OSDMap.h \ |