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-rw-r--r--src/tools/erasure-code/ceph-erasure-code-tool.cc322
1 files changed, 322 insertions, 0 deletions
diff --git a/src/tools/erasure-code/ceph-erasure-code-tool.cc b/src/tools/erasure-code/ceph-erasure-code-tool.cc
new file mode 100644
index 000000000..6c99abf46
--- /dev/null
+++ b/src/tools/erasure-code/ceph-erasure-code-tool.cc
@@ -0,0 +1,322 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "include/buffer.h"
+#include "include/stringify.h"
+#include "common/ceph_argparse.h"
+#include "common/config_proxy.h"
+#include "common/errno.h"
+#include "erasure-code/ErasureCode.h"
+#include "erasure-code/ErasureCodePlugin.h"
+#include "global/global_context.h"
+#include "global/global_init.h"
+#include "osd/ECUtil.h"
+
+#include <iostream>
+#include <map>
+#include <string>
+#include <vector>
+
+#include <boost/algorithm/string.hpp>
+
+std::vector<std::string> display_params = {
+ "chunk_count", "data_chunk_count", "coding_chunk_count"
+};
+
+void usage(const std::string message, ostream &out) {
+ if (!message.empty()) {
+ out << message << std::endl;
+ out << "" << std::endl;
+ }
+ out << "usage: ceph-erasure-code-tool test-plugin-exists <plugin>" << std::endl;
+ out << " ceph-erasure-code-tool validate-profile <profile> [<display-param> ...]" << std::endl;
+ out << " ceph-erasure-code-tool calc-chunk-size <profile> <object_size>" << std::endl;
+ out << " ceph-erasure-code-tool encode <profile> <stripe_unit> <want_to_encode> <fname>" << std::endl;
+ out << " ceph-erasure-code-tool decode <profile> <stripe_unit> <want_to_decode> <fname>" << std::endl;
+ out << "" << std::endl;
+ out << " plugin - plugin name" << std::endl;
+ out << " profile - comma separated list of erasure-code profile settings" << std::endl;
+ out << " example: plugin=jerasure,technique=reed_sol_van,k=3,m=2" << std::endl;
+ out << " display-param - parameter to display (display all if empty)" << std::endl;
+ out << " may be: " << display_params << std::endl;
+ out << " object_size - object size" << std::endl;
+ out << " stripe_unit - stripe unit" << std::endl;
+ out << " want_to_encode - comma separated list of shards to encode" << std::endl;
+ out << " want_to_decode - comma separated list of shards to decode" << std::endl;
+ out << " fname - name for input/output files" << std::endl;
+ out << " when encoding input is read form {fname} file," << std::endl;
+ out << " result is stored in {fname}.{shard} files" << std::endl;
+ out << " when decoding input is read form {fname}.{shard} files," << std::endl;
+ out << " result is stored in {fname} file" << std::endl;
+}
+
+int ec_init(const std::string &profile_str,
+ const std::string &stripe_unit_str,
+ ceph::ErasureCodeInterfaceRef *ec_impl,
+ std::unique_ptr<ECUtil::stripe_info_t> *sinfo) {
+ ceph::ErasureCodeProfile profile;
+ std::vector<std::string> opts;
+ boost::split(opts, profile_str, boost::is_any_of(", "));
+ for (auto &opt_str : opts) {
+ std::vector<std::string> opt;
+ boost::split(opt, opt_str, boost::is_any_of("="));
+ if (opt.size() <= 1) {
+ usage("invalid profile", std::cerr);
+ return 1;
+ }
+ profile[opt[0]] = opt[1];
+ }
+ auto plugin = profile.find("plugin");
+ if (plugin == profile.end()) {
+ usage("invalid profile: plugin not specified", std::cerr);
+ return 1;
+ }
+
+ stringstream ss;
+ ceph::ErasureCodePluginRegistry::instance().factory(
+ plugin->second, g_conf().get_val<std::string>("erasure_code_dir"),
+ profile, ec_impl, &ss);
+ if (!*ec_impl) {
+ usage("invalid profile: " + ss.str(), std::cerr);
+ return 1;
+ }
+
+ if (sinfo == nullptr) {
+ return 0;
+ }
+
+ uint64_t stripe_unit = atoi(stripe_unit_str.c_str());
+ if (stripe_unit <= 0) {
+ usage("invalid stripe unit", std::cerr);
+ return 1;
+ }
+
+ uint64_t stripe_size = atoi(profile["k"].c_str());
+ ceph_assert(stripe_size > 0);
+ uint64_t stripe_width = stripe_size * stripe_unit;
+ sinfo->reset(new ECUtil::stripe_info_t(stripe_size, stripe_width));
+
+ return 0;
+}
+
+int do_test_plugin_exists(const std::vector<const char*> &args) {
+ if (args.size() < 1) {
+ usage("not enought arguments", std::cerr);
+ return 1;
+ }
+
+ ErasureCodePluginRegistry &instance = ErasureCodePluginRegistry::instance();
+ ErasureCodePlugin *plugin;
+ stringstream ss;
+
+ std::lock_guard l{instance.lock};
+ int r = instance.load(
+ args[0], g_conf().get_val<std::string>("erasure_code_dir"), &plugin, &ss);
+ std::cerr << ss.str() << endl;
+ return r;
+}
+
+int do_validate_profile(const std::vector<const char*> &args) {
+ if (args.size() < 1) {
+ usage("not enought arguments", std::cerr);
+ return 1;
+ }
+
+ ceph::ErasureCodeInterfaceRef ec_impl;
+ int r = ec_init(args[0], {}, &ec_impl, nullptr);
+ if (r < 0) {
+ return r;
+ }
+
+ if (args.size() > 1) {
+ std::set<std::string> valid_params(display_params.begin(),
+ display_params.end());
+ display_params.clear();
+ for (size_t i = 1; i < args.size(); i++) {
+ if (!valid_params.count(args[i])) {
+ usage("invalid display param: " + std::string(args[i]), std::cerr);
+ return 1;
+ }
+ display_params.push_back(args[i]);
+ }
+ }
+
+ for (auto &param : display_params) {
+ if (display_params.size() > 1) {
+ std::cout << param << ": ";
+ }
+ if (param == "chunk_count") {
+ std::cout << ec_impl->get_chunk_count() << std::endl;
+ } else if (param == "data_chunk_count") {
+ std::cout << ec_impl->get_data_chunk_count() << std::endl;
+ } else if (param == "coding_chunk_count") {
+ std::cout << ec_impl->get_coding_chunk_count() << std::endl;
+ } else {
+ ceph_abort_msgf("unknown display_param: %s", param.c_str());
+ }
+ }
+
+ return 0;
+}
+
+int do_calc_chunk_size(const std::vector<const char*> &args) {
+ if (args.size() < 2) {
+ usage("not enought arguments", std::cerr);
+ return 1;
+ }
+
+ ceph::ErasureCodeInterfaceRef ec_impl;
+ int r = ec_init(args[0], {}, &ec_impl, nullptr);
+ if (r < 0) {
+ return r;
+ }
+
+ uint64_t object_size = atoi(args[1]);
+ if (object_size <= 0) {
+ usage("invalid object size", std::cerr);
+ return 1;
+ }
+
+ std::cout << ec_impl->get_chunk_size(object_size) << std::endl;
+ return 0;
+}
+
+int do_encode(const std::vector<const char*> &args) {
+ if (args.size() < 4) {
+ usage("not enought arguments", std::cerr);
+ return 1;
+ }
+
+ ceph::ErasureCodeInterfaceRef ec_impl;
+ std::unique_ptr<ECUtil::stripe_info_t> sinfo;
+ int r = ec_init(args[0], args[1], &ec_impl, &sinfo);
+ if (r < 0) {
+ return r;
+ }
+
+ std::set<int> want;
+ std::vector<std::string> shards;
+ boost::split(shards, args[2], boost::is_any_of(","));
+ for (auto &shard : shards) {
+ want.insert(atoi(shard.c_str()));
+ }
+ ceph::bufferlist decoded_data;
+ std::string fname = args[3];
+
+ std::string error;
+ r = decoded_data.read_file(fname.c_str(), &error);
+ if (r < 0) {
+ std::cerr << "failed to read " << fname << ": " << error << std::endl;
+ return 1;
+ }
+
+ uint64_t stripe_width = sinfo->get_stripe_width();
+ if (decoded_data.length() % stripe_width != 0) {
+ uint64_t pad = stripe_width - decoded_data.length() % stripe_width;
+ decoded_data.append_zero(pad);
+ }
+
+ std::map<int, ceph::bufferlist> encoded_data;
+ r = ECUtil::encode(*sinfo, ec_impl, decoded_data, want, &encoded_data);
+ if (r < 0) {
+ std::cerr << "failed to encode: " << cpp_strerror(r) << std::endl;
+ return 1;
+ }
+
+ for (auto &[shard, bl] : encoded_data) {
+ std::string name = fname + "." + stringify(shard);
+ r = bl.write_file(name.c_str());
+ if (r < 0) {
+ std::cerr << "failed to write " << name << ": " << cpp_strerror(r)
+ << std::endl;
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+int do_decode(const std::vector<const char*> &args) {
+ if (args.size() < 4) {
+ usage("not enought arguments", std::cerr);
+ return 1;
+ }
+
+ ceph::ErasureCodeInterfaceRef ec_impl;
+ std::unique_ptr<ECUtil::stripe_info_t> sinfo;
+ int r = ec_init(args[0], args[1], &ec_impl, &sinfo);
+ if (r < 0) {
+ return r;
+ }
+
+ std::map<int, ceph::bufferlist> encoded_data;
+ std::vector<std::string> shards;
+ boost::split(shards, args[2], boost::is_any_of(","));
+ for (auto &shard : shards) {
+ encoded_data[atoi(shard.c_str())] = {};
+ }
+ ceph::bufferlist decoded_data;
+ std::string fname = args[3];
+
+ for (auto &[shard, bl] : encoded_data) {
+ std::string name = fname + "." + stringify(shard);
+ std::string error;
+ r = bl.read_file(name.c_str(), &error);
+ if (r < 0) {
+ std::cerr << "failed to read " << name << ": " << error << std::endl;
+ return 1;
+ }
+ }
+
+ r = ECUtil::decode(*sinfo, ec_impl, encoded_data, &decoded_data);
+ if (r < 0) {
+ std::cerr << "failed to decode: " << cpp_strerror(r) << std::endl;
+ return 1;
+ }
+
+ r = decoded_data.write_file(fname.c_str());
+ if (r < 0) {
+ std::cerr << "failed to write " << fname << ": " << cpp_strerror(r)
+ << std::endl;
+ return 1;
+ }
+
+ return 0;
+}
+
+int main(int argc, const char **argv) {
+ std::vector<const char*> args;
+ argv_to_vec(argc, argv, args);
+ auto cct = global_init(nullptr, args, CEPH_ENTITY_TYPE_CLIENT,
+ CODE_ENVIRONMENT_UTILITY,
+ CINIT_FLAG_NO_MON_CONFIG);
+
+ if (args.empty() || args[0] == std::string("-h") ||
+ args[0] == std::string("--help")) {
+ usage("", std::cout);
+ return 0;
+ }
+
+ if (args.size() < 1) {
+ usage("not enought arguments", std::cerr);
+ return 1;
+ }
+
+ std::string cmd = args[0];
+ std::vector<const char*> cmd_args(args.begin() + 1, args.end());
+
+ if (cmd == "test-plugin-exists") {
+ return do_test_plugin_exists(cmd_args);
+ } else if (cmd == "validate-profile") {
+ return do_validate_profile(cmd_args);
+ } else if (cmd == "calc-chunk-size") {
+ return do_calc_chunk_size(cmd_args);
+ } else if (cmd == "encode") {
+ return do_encode(cmd_args);
+ } else if (cmd == "decode") {
+ return do_decode(cmd_args);
+ }
+
+ usage("invalid command: " + cmd, std::cerr);
+ return 1;
+}
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