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Diffstat (limited to '')
| -rw-r--r-- | src/test/erasure-code/TestErasureCodeShec_arguments.cc | 392 |
1 files changed, 392 insertions, 0 deletions
diff --git a/src/test/erasure-code/TestErasureCodeShec_arguments.cc b/src/test/erasure-code/TestErasureCodeShec_arguments.cc new file mode 100644 index 000000000..561afafa6 --- /dev/null +++ b/src/test/erasure-code/TestErasureCodeShec_arguments.cc @@ -0,0 +1,392 @@ +// -*- 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) 2015 FUJITSU LIMITED + * + * Author: Shotaro Kawaguchi <kawaguchi.s@jp.fujitsu.com> + * Author: Takanori Nakao <nakao.takanori@jp.fujitsu.com> + * Author: Takeshi Miyamae <miyamae.takeshi@jp.fujitsu.com> + * + * 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. + * + */ + +// SUMMARY: shec's gtest for each argument of minimum_to_decode()/decode() + +#include <errno.h> +#include <stdlib.h> + +#include "crush/CrushWrapper.h" +#include "osd/osd_types.h" +#include "include/stringify.h" +#include "global/global_init.h" +#include "erasure-code/shec/ErasureCodeShec.h" +#include "erasure-code/ErasureCodePlugin.h" +#include "common/ceph_argparse.h" +#include "global/global_context.h" +#include "gtest/gtest.h" + +unsigned int count_num = 0; +unsigned int unexpected_count = 0; +unsigned int value_count = 0; + +map<set<int>,set<set<int> > > shec_table; + +int getint(int a, int b) { + return ((1 << a) | (1 << b)); +} + +int getint(int a, int b, int c) { + return ((1 << a) | (1 << b) | (1 << c)); +} + +int getint(int a, int b, int c, int d) { + return ((1 << a) | (1 << b) | (1 << c) | (1 << d)); +} + +void create_table_shec432() { + set<int> table_key,vec_avails; + set<set<int> > table_value; + + for (int want_count = 0; want_count < 7; ++want_count) { + for (int want = 1; want < (1<<7); ++want) { + table_key.clear(); + table_value.clear(); + if (__builtin_popcount(want) != want_count) { + continue; + } + { + for (int i = 0; i < 7; ++i) { + if (want & (1 << i)) { + table_key.insert(i); + } + } + } + vector<int> vec; + for (int avails = 0; avails < (1<<7); ++avails) { + if (want & avails) { + continue; + } + if (__builtin_popcount(avails) == 2 && + __builtin_popcount(want) == 1) { + if ((want | avails) == getint(0,1,5) || + (want | avails) == getint(2,3,6)) { + vec.push_back(avails); + } + } + } + + for (int avails = 0; avails < (1<<7); ++avails) { + if (want & avails) { + continue; + } + if (__builtin_popcount(avails) == 4) { + if ((avails) == getint(0,1,2,3) || + (avails) == getint(0,1,2,4) || + (avails) == getint(0,1,2,6) || + (avails) == getint(0,1,3,4) || + (avails) == getint(0,1,3,6) || + (avails) == getint(0,1,4,6) || + (avails) == getint(0,2,3,4) || + (avails) == getint(0,2,3,5) || + (avails) == getint(0,2,4,5) || + (avails) == getint(0,2,4,6) || + (avails) == getint(0,2,5,6) || + (avails) == getint(0,3,4,5) || + (avails) == getint(0,3,4,6) || + (avails) == getint(0,3,5,6) || + (avails) == getint(0,4,5,6) || + (avails) == getint(1,2,3,4) || + (avails) == getint(1,2,3,5) || + (avails) == getint(1,2,4,5) || + (avails) == getint(1,2,4,6) || + (avails) == getint(1,2,5,6) || + (avails) == getint(1,3,4,5) || + (avails) == getint(1,3,4,6) || + (avails) == getint(1,3,5,6) || + (avails) == getint(1,4,5,6) || + (avails) == getint(2,3,4,5) || + (avails) == getint(2,4,5,6) || + (avails) == getint(3,4,5,6)) { + vec.push_back(avails); + } + } + } + for (int i = 0; i < (int)vec.size(); ++i) { + for (int j = i + 1; j < (int)vec.size(); ++j) { + if ((vec[i] & vec[j]) == vec[i]) { + vec.erase(vec.begin() + j); + --j; + } + } + } + for (int i = 0; i < (int)vec.size(); ++i) { + vec_avails.clear(); + for (int j = 0; j < 7; ++j) { + if (vec[i] & (1 << j)) { + vec_avails.insert(j); + } + } + table_value.insert(vec_avails); + } + shec_table.insert(std::make_pair(table_key,table_value)); + } + } +} + +bool search_table_shec432(set<int> want_to_read, set<int> available_chunks) { + set<set<int> > tmp; + set<int> settmp; + bool found; + + tmp = shec_table.find(want_to_read)->second; + for (set<set<int> >::iterator itr = tmp.begin();itr != tmp.end(); ++itr) { + found = true; + value_count = 0; + settmp = *itr; + for (set<int>::iterator setitr = settmp.begin();setitr != settmp.end(); ++setitr) { + if (!available_chunks.count(*setitr)) { + found = false; + } + ++value_count; + } + if (found) { + return true; + } + } + return false; +} + +TEST(ParameterTest, combination_all) +{ + const unsigned int kObjectSize = 128; + + //get profile + char* k = (char*)"4"; + char* m = (char*)"3"; + char* c = (char*)"2"; + int i_k = atoi(k); + int i_m = atoi(m); + int i_c = atoi(c); + const unsigned alignment = i_k * 8 * sizeof(int); + const unsigned tail = kObjectSize % alignment; + const unsigned padded_length = kObjectSize + (tail ? (alignment - tail) : 0); + const unsigned c_size = padded_length / i_k; + + //init + ErasureCodeShecTableCache tcache; + ErasureCodeShec* shec = new ErasureCodeShecReedSolomonVandermonde( + tcache, + ErasureCodeShec::MULTIPLE); + map < std::string, std::string > *profile = new map<std::string, + std::string>(); + (*profile)["plugin"] = "shec"; + (*profile)["technique"] = ""; + (*profile)["crush-failure-domain"] = "osd"; + (*profile)["k"] = k; + (*profile)["m"] = m; + (*profile)["c"] = c; + + int result = shec->init(*profile, &cerr); + + //check profile + EXPECT_EQ(i_k, shec->k); + EXPECT_EQ(i_m, shec->m); + EXPECT_EQ(i_c, shec->c); + EXPECT_EQ(8, shec->w); + EXPECT_EQ(ErasureCodeShec::MULTIPLE, shec->technique); + EXPECT_STREQ("default", shec->rule_root.c_str()); + EXPECT_STREQ("osd", shec->rule_failure_domain.c_str()); + EXPECT_TRUE(shec->matrix != NULL); + EXPECT_EQ(0, result); + + //encode + bufferlist in; + in.append("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//length = 62 + "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"//124 + "0123"//128 + ); + set<int> want_to_encode; + for (unsigned int i = 0; i < shec->get_chunk_count(); ++i) { + want_to_encode.insert(i); + } + + map<int, bufferlist> encoded; + result = shec->encode(want_to_encode, in, &encoded); + EXPECT_EQ(0, result); + EXPECT_EQ(i_k+i_m, (int)encoded.size()); + EXPECT_EQ(c_size, encoded[0].length()); + bufferlist out1; + //out1 is "encoded" + for (unsigned int i = 0; i < encoded.size(); ++i) { + out1.append(encoded[i]); + } + EXPECT_FALSE(out1 == in); + + for (unsigned int w1 = 0; w1 <= shec->get_chunk_count(); ++w1) { + // combination(k+m,w1) + int array_want_to_read[shec->get_chunk_count()]; + for (unsigned int i = 0; i < shec->get_chunk_count(); ++i) { + array_want_to_read[i] = i < w1 ? 1 : 0; + } + + for (unsigned w2 = 0; w2 <= shec->get_chunk_count(); ++w2) { + // combination(k+m,w2) + int array_available_chunks[shec->get_chunk_count()]; + for (unsigned int i = 0; i < shec->get_chunk_count(); ++i ) { + array_available_chunks[i] = i < w2 ? 1 : 0; + } + + do { + do { + set<int> want_to_read, available_chunks; + map<int, bufferlist> inchunks; + for (unsigned int i = 0; i < shec->get_chunk_count(); ++i) { + if (array_want_to_read[i]) { + want_to_read.insert(i); + } + if (array_available_chunks[i]) { + available_chunks.insert(i); + inchunks.insert(make_pair(i,encoded[i])); + } + } + + map<int, vector<pair<int,int>>> minimum_chunks; + map<int, bufferlist> decoded; + result = shec->minimum_to_decode(want_to_read, available_chunks, + &minimum_chunks); + int dresult = shec->decode(want_to_read, inchunks, &decoded, + shec->get_chunk_size(kObjectSize)); + ++count_num; + unsigned int minimum_count = 0; + + if (want_to_read.size() == 0) { + EXPECT_EQ(0, result); + EXPECT_EQ(0u, minimum_chunks.size()); + EXPECT_EQ(0, dresult); + EXPECT_EQ(0u, decoded.size()); + EXPECT_EQ(0u, decoded[0].length()); + if (result != 0 || dresult != 0) { + ++unexpected_count; + } + } else { + // want - avail + set<int> want_to_read_without_avails; + for (auto chunk : want_to_read) { + if (!available_chunks.count(chunk)) { + want_to_read_without_avails.insert(chunk); + } else { + ++minimum_count; + } + } + + if (want_to_read_without_avails.size() == 0) { + EXPECT_EQ(0, result); + EXPECT_LT(0u, minimum_chunks.size()); + EXPECT_GE(minimum_count, minimum_chunks.size()); + EXPECT_EQ(0, dresult); + EXPECT_NE(0u, decoded.size()); + for (unsigned int i = 0; i < shec->get_data_chunk_count(); ++i) { + if (array_want_to_read[i]) { + bufferlist usable; + usable.substr_of(in, c_size * i, c_size); + int cmp = memcmp(decoded[i].c_str(), usable.c_str(), c_size); + EXPECT_EQ(c_size, decoded[i].length()); + EXPECT_EQ(0, cmp); + if (cmp != 0) { + ++unexpected_count; + } + } + } + if (result != 0 || dresult != 0) { + ++unexpected_count; + } + } else if (want_to_read_without_avails.size() > 3) { + EXPECT_EQ(-EIO, result); + EXPECT_EQ(0u, minimum_chunks.size()); + EXPECT_EQ(-1, dresult); + if (result != -EIO || dresult != -1) { + ++unexpected_count; + } + } else { + // search + if (search_table_shec432(want_to_read_without_avails,available_chunks)) { + EXPECT_EQ(0, result); + EXPECT_LT(0u, minimum_chunks.size()); + EXPECT_GE(value_count + minimum_count, minimum_chunks.size()); + EXPECT_EQ(0, dresult); + EXPECT_NE(0u, decoded.size()); + for (unsigned int i = 0; i < shec->get_data_chunk_count(); ++i) { + if (array_want_to_read[i]) { + bufferlist usable; + usable.substr_of(in, c_size * i, c_size); + int cmp = memcmp(decoded[i].c_str(), usable.c_str(), c_size); + EXPECT_EQ(c_size, decoded[i].length()); + EXPECT_EQ(0, cmp); + if (cmp != 0) { + ++unexpected_count; + std::cout << "decoded[" << i << "] = " << decoded[i].c_str() << std::endl; + std::cout << "usable = " << usable.c_str() << std::endl; + std::cout << "want_to_read :" << want_to_read << std::endl; + std::cout << "available_chunks:" << available_chunks << std::endl; + std::cout << "minimum_chunks :" << minimum_chunks << std::endl; + } + } + } + if (result != 0 || dresult != 0) { + ++unexpected_count; + } + } else { + EXPECT_EQ(-EIO, result); + EXPECT_EQ(0u, minimum_chunks.size()); + EXPECT_EQ(-1, dresult); + if (result != -EIO || dresult != -1) { + ++unexpected_count; + } + } + } + } + } while (std::prev_permutation( + array_want_to_read, + array_want_to_read + shec->get_chunk_count())); + + } while (std::prev_permutation( + array_available_chunks, + array_available_chunks + shec->get_chunk_count())); + } + } + + delete shec; + delete profile; +} + +int main(int argc, char **argv) +{ + int r; + + vector<const char*> args; + argv_to_vec(argc, (const char **) argv, args); + + auto cct = global_init(NULL, args, CEPH_ENTITY_TYPE_CLIENT, + CODE_ENVIRONMENT_UTILITY, + CINIT_FLAG_NO_MON_CONFIG); + common_init_finish(g_ceph_context); + + ::testing::InitGoogleTest(&argc, argv); + + create_table_shec432(); + + r = RUN_ALL_TESTS(); + + std::cout << "minimum_to_decode:total_num = " << count_num + << std::endl; + std::cout << "minimum_to_decode:unexpected_num = " << unexpected_count + << std::endl; + + return r; +} |