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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph distributed storage system
*
* Copyright (C) 2014 Cloudwatt <libre.licensing@cloudwatt.com>
* Copyright (C) 2014 Red Hat <contact@redhat.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.
*
*/
#include <boost/scoped_ptr.hpp>
#include <boost/lexical_cast.hpp>
#include <boost/program_options/option.hpp>
#include <boost/program_options/options_description.hpp>
#include <boost/program_options/variables_map.hpp>
#include <boost/program_options/cmdline.hpp>
#include <boost/program_options/parsers.hpp>
#include <boost/algorithm/string.hpp>
#include "global/global_context.h"
#include "global/global_init.h"
#include "common/ceph_argparse.h"
#include "common/ceph_context.h"
#include "common/config.h"
#include "common/Clock.h"
#include "include/utime.h"
#include "erasure-code/ErasureCodePlugin.h"
namespace po = boost::program_options;
class ErasureCodeCommand {
po::variables_map vm;
ErasureCodeProfile profile;
boost::intrusive_ptr<CephContext> cct;
public:
int setup(int argc, char** argv);
int run();
int plugin_exists();
int display_information();
};
int ErasureCodeCommand::setup(int argc, char** argv) {
po::options_description desc("Allowed options");
desc.add_options()
("help,h", "produce help message")
("all", "implies "
"--get_chunk_size 1024 "
"--get_data_chunk_count "
"--get_coding_chunk_count "
"--get_chunk_count ")
("get_chunk_size", po::value<unsigned int>(),
"display get_chunk_size(<object size>)")
("get_data_chunk_count", "display get_data_chunk_count()")
("get_coding_chunk_count", "display get_coding_chunk_count()")
("get_chunk_count", "display get_chunk_count()")
("parameter,P", po::value<vector<string> >(),
"parameters")
("plugin_exists", po::value<string>(),
"succeeds if the plugin given in argument exists and can be loaded")
;
po::parsed_options parsed =
po::command_line_parser(argc, argv).options(desc).allow_unregistered().run();
po::store(
parsed,
vm);
po::notify(vm);
vector<const char *> ceph_options;
vector<string> ceph_option_strings = po::collect_unrecognized(
parsed.options, po::include_positional);
ceph_options.reserve(ceph_option_strings.size());
for (vector<string>::iterator i = ceph_option_strings.begin();
i != ceph_option_strings.end();
++i) {
ceph_options.push_back(i->c_str());
}
cct = global_init(
NULL, ceph_options, CEPH_ENTITY_TYPE_CLIENT,
CODE_ENVIRONMENT_UTILITY,
CINIT_FLAG_NO_MON_CONFIG);
common_init_finish(g_ceph_context);
g_ceph_context->_conf.apply_changes(nullptr);
if (vm.count("help")) {
cout << desc << std::endl;
return 1;
}
if (vm.count("parameter")) {
const vector<string> &p = vm["parameter"].as< vector<string> >();
for (vector<string>::const_iterator i = p.begin();
i != p.end();
++i) {
std::vector<std::string> strs;
boost::split(strs, *i, boost::is_any_of("="));
if (strs.size() != 2) {
cerr << "--parameter " << *i
<< " ignored because it does not contain exactly one =" << endl;
} else {
profile[strs[0]] = strs[1];
}
}
}
return 0;
}
int ErasureCodeCommand::run() {
if (vm.count("plugin_exists"))
return plugin_exists();
else
return display_information();
}
int ErasureCodeCommand::plugin_exists() {
ErasureCodePluginRegistry &instance = ErasureCodePluginRegistry::instance();
ErasureCodePlugin *plugin = 0;
Mutex::Locker l(instance.lock);
stringstream ss;
int code = instance.load(vm["plugin_exists"].as<string>(),
g_conf().get_val<std::string>("erasure_code_dir"), &plugin, &ss);
if (code)
cerr << ss.str() << endl;
return code;
}
int ErasureCodeCommand::display_information() {
ErasureCodePluginRegistry &instance = ErasureCodePluginRegistry::instance();
ErasureCodeInterfaceRef erasure_code;
if (profile.count("plugin") == 0) {
cerr << "--parameter plugin=<plugin> is mandatory" << endl;
return 1;
}
int code = instance.factory(profile["plugin"],
g_conf().get_val<std::string>("erasure_code_dir"),
profile,
&erasure_code, &cerr);
if (code)
return code;
if (vm.count("all") || vm.count("get_chunk_size")) {
unsigned int object_size = 1024;
if (vm.count("get_chunk_size"))
object_size = vm["get_chunk_size"].as<unsigned int>();
cout << "get_chunk_size(" << object_size << ")\t"
<< erasure_code->get_chunk_size(object_size) << endl;
}
if (vm.count("all") || vm.count("get_data_chunk_count"))
cout << "get_data_chunk_count\t"
<< erasure_code->get_data_chunk_count() << endl;
if (vm.count("all") || vm.count("get_coding_chunk_count"))
cout << "get_coding_chunk_count\t"
<< erasure_code->get_coding_chunk_count() << endl;
if (vm.count("all") || vm.count("get_chunk_count"))
cout << "get_chunk_count\t"
<< erasure_code->get_chunk_count() << endl;
return 0;
}
int main(int argc, char** argv) {
ErasureCodeCommand eccommand;
try {
int err = eccommand.setup(argc, argv);
if (err)
return err;
return eccommand.run();
} catch(po::error &e) {
cerr << e.what() << endl;
return 1;
}
}
/*
* Local Variables:
* compile-command: "cd ../.. ; make -j4 &&
* make -j4 ceph_erasure_code &&
* libtool --mode=execute valgrind --tool=memcheck --leak-check=full \
* ./ceph_erasure_code \
* --parameter plugin=jerasure \
* --parameter technique=reed_sol_van \
* --parameter k=2 \
* --parameter m=2 \
* --get_chunk_size 1024 \
* --get_data_chunk_count \
* --get_coding_chunk_count \
* --get_chunk_count \
* "
* End:
*/
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