reftable/merged_test.c

   1 /*
   2 Copyright 2020 Google LLC
   3
   4 Use of this source code is governed by a BSD-style
   5 license that can be found in the LICENSE file or at
   6 https://developers.google.com/open-source/licenses/bsd
   7 */
   8
   9 #include "merged.h"
  10
  11 #include "system.h"
  12
  13 #include "basics.h"
  14 #include "blocksource.h"
  15 #include "reader.h"
  16 #include "record.h"
  17 #include "test_framework.h"
  18 #include "reftable-merged.h"
  19 #include "reftable-tests.h"
  20 #include "reftable-generic.h"
  21 #include "reftable-writer.h"
  22
  23 static void write_test_table(struct strbuf *buf,
  24                              struct reftable_ref_record refs[], int n)
  25 {
  26         uint64_t min = 0xffffffff;
  27         uint64_t max = 0;
  28         int i = 0;
  29         int err;
  30
  31         struct reftable_write_options opts = {
  32                 .block_size = 256,
  33         };
  34         struct reftable_writer *w = NULL;
  35         for (i = 0; i < n; i++) {
  36                 uint64_t ui = refs[i].update_index;
  37                 if (ui > max) {
  38                         max = ui;
  39                 }
  40                 if (ui < min) {
  41                         min = ui;
  42                 }
  43         }
  44
  45         w = reftable_new_writer(&strbuf_add_void, &noop_flush, buf, &opts);
  46         reftable_writer_set_limits(w, min, max);
  47
  48         for (i = 0; i < n; i++) {
  49                 uint64_t before = refs[i].update_index;
  50                 int n = reftable_writer_add_ref(w, &refs[i]);
  51                 EXPECT(n == 0);
  52                 EXPECT(before == refs[i].update_index);
  53         }
  54
  55         err = reftable_writer_close(w);
  56         EXPECT_ERR(err);
  57
  58         reftable_writer_free(w);
  59 }
  60
  61 static void write_test_log_table(struct strbuf *buf,
  62                                  struct reftable_log_record logs[], int n,
  63                                  uint64_t update_index)
  64 {
  65         int i = 0;
  66         int err;
  67
  68         struct reftable_write_options opts = {
  69                 .block_size = 256,
  70                 .exact_log_message = 1,
  71         };
  72         struct reftable_writer *w = NULL;
  73         w = reftable_new_writer(&strbuf_add_void, &noop_flush, buf, &opts);
  74         reftable_writer_set_limits(w, update_index, update_index);
  75
  76         for (i = 0; i < n; i++) {
  77                 int err = reftable_writer_add_log(w, &logs[i]);
  78                 EXPECT_ERR(err);
  79         }
  80
  81         err = reftable_writer_close(w);
  82         EXPECT_ERR(err);
  83
  84         reftable_writer_free(w);
  85 }
  86
  87 static struct reftable_merged_table *
  88 merged_table_from_records(struct reftable_ref_record **refs,
  89                           struct reftable_block_source **source,
  90                           struct reftable_reader ***readers, int *sizes,
  91                           struct strbuf *buf, int n)
  92 {
  93         int i = 0;
  94         struct reftable_merged_table *mt = NULL;
  95         int err;
  96         struct reftable_table *tabs =
  97                 reftable_calloc(n * sizeof(struct reftable_table));
  98         *readers = reftable_calloc(n * sizeof(struct reftable_reader *));
  99         *source = reftable_calloc(n * sizeof(**source));
 100         for (i = 0; i < n; i++) {
 101                 write_test_table(&buf[i], refs[i], sizes[i]);
 102                 block_source_from_strbuf(&(*source)[i], &buf[i]);
 103
 104                 err = reftable_new_reader(&(*readers)[i], &(*source)[i],
 105                                           "name");
 106                 EXPECT_ERR(err);
 107                 reftable_table_from_reader(&tabs[i], (*readers)[i]);
 108         }
 109
 110         err = reftable_new_merged_table(&mt, tabs, n, GIT_SHA1_FORMAT_ID);
 111         EXPECT_ERR(err);
 112         return mt;
 113 }
 114
 115 static void readers_destroy(struct reftable_reader **readers, size_t n)
 116 {
 117         int i = 0;
 118         for (; i < n; i++)
 119                 reftable_reader_free(readers[i]);
 120         reftable_free(readers);
 121 }
 122
 123 static void test_merged_between(void)
 124 {
 125         struct reftable_ref_record r1[] = { {
 126                 .refname = "b",
 127                 .update_index = 1,
 128                 .value_type = REFTABLE_REF_VAL1,
 129                 .value.val1 = { 1, 2, 3, 0 },
 130         } };
 131         struct reftable_ref_record r2[] = { {
 132                 .refname = "a",
 133                 .update_index = 2,
 134                 .value_type = REFTABLE_REF_DELETION,
 135         } };
 136
 137         struct reftable_ref_record *refs[] = { r1, r2 };
 138         int sizes[] = { 1, 1 };
 139         struct strbuf bufs[2] = { STRBUF_INIT, STRBUF_INIT };
 140         struct reftable_block_source *bs = NULL;
 141         struct reftable_reader **readers = NULL;
 142         struct reftable_merged_table *mt =
 143                 merged_table_from_records(refs, &bs, &readers, sizes, bufs, 2);
 144         int i;
 145         struct reftable_ref_record ref = { NULL };
 146         struct reftable_iterator it = { NULL };
 147         int err = reftable_merged_table_seek_ref(mt, &it, "a");
 148         EXPECT_ERR(err);
 149
 150         err = reftable_iterator_next_ref(&it, &ref);
 151         EXPECT_ERR(err);
 152         EXPECT(ref.update_index == 2);
 153         reftable_ref_record_release(&ref);
 154         reftable_iterator_destroy(&it);
 155         readers_destroy(readers, 2);
 156         reftable_merged_table_free(mt);
 157         for (i = 0; i < ARRAY_SIZE(bufs); i++) {
 158                 strbuf_release(&bufs[i]);
 159         }
 160         reftable_free(bs);
 161 }
 162
 163 static void test_merged(void)
 164 {
 165         struct reftable_ref_record r1[] = {
 166                 {
 167                         .refname = "a",
 168                         .update_index = 1,
 169                         .value_type = REFTABLE_REF_VAL1,
 170                         .value.val1 = { 1 },
 171                 },
 172                 {
 173                         .refname = "b",
 174                         .update_index = 1,
 175                         .value_type = REFTABLE_REF_VAL1,
 176                         .value.val1 = { 1 },
 177                 },
 178                 {
 179                         .refname = "c",
 180                         .update_index = 1,
 181                         .value_type = REFTABLE_REF_VAL1,
 182                         .value.val1 = { 1 },
 183                 }
 184         };
 185         struct reftable_ref_record r2[] = { {
 186                 .refname = "a",
 187                 .update_index = 2,
 188                 .value_type = REFTABLE_REF_DELETION,
 189         } };
 190         struct reftable_ref_record r3[] = {
 191                 {
 192                         .refname = "c",
 193                         .update_index = 3,
 194                         .value_type = REFTABLE_REF_VAL1,
 195                         .value.val1 = { 2 },
 196                 },
 197                 {
 198                         .refname = "d",
 199                         .update_index = 3,
 200                         .value_type = REFTABLE_REF_VAL1,
 201                         .value.val1 = { 1 },
 202                 },
 203         };
 204
 205         struct reftable_ref_record *want[] = {
 206                 &r2[0],
 207                 &r1[1],
 208                 &r3[0],
 209                 &r3[1],
 210         };
 211
 212         struct reftable_ref_record *refs[] = { r1, r2, r3 };
 213         int sizes[3] = { 3, 1, 2 };
 214         struct strbuf bufs[3] = { STRBUF_INIT, STRBUF_INIT, STRBUF_INIT };
 215         struct reftable_block_source *bs = NULL;
 216         struct reftable_reader **readers = NULL;
 217         struct reftable_merged_table *mt =
 218                 merged_table_from_records(refs, &bs, &readers, sizes, bufs, 3);
 219
 220         struct reftable_iterator it = { NULL };
 221         int err = reftable_merged_table_seek_ref(mt, &it, "a");
 222         struct reftable_ref_record *out = NULL;
 223         size_t len = 0;
 224         size_t cap = 0;
 225         int i = 0;
 226
 227         EXPECT_ERR(err);
 228         EXPECT(reftable_merged_table_hash_id(mt) == GIT_SHA1_FORMAT_ID);
 229         EXPECT(reftable_merged_table_min_update_index(mt) == 1);
 230
 231         while (len < 100) { /* cap loops/recursion. */
 232                 struct reftable_ref_record ref = { NULL };
 233                 int err = reftable_iterator_next_ref(&it, &ref);
 234                 if (err > 0) {
 235                         break;
 236                 }
 237                 if (len == cap) {
 238                         cap = 2 * cap + 1;
 239                         out = reftable_realloc(
 240                                 out, sizeof(struct reftable_ref_record) * cap);
 241                 }
 242                 out[len++] = ref;
 243         }
 244         reftable_iterator_destroy(&it);
 245
 246         EXPECT(ARRAY_SIZE(want) == len);
 247         for (i = 0; i < len; i++) {
 248                 EXPECT(reftable_ref_record_equal(want[i], &out[i],
 249                                                  GIT_SHA1_RAWSZ));
 250         }
 251         for (i = 0; i < len; i++) {
 252                 reftable_ref_record_release(&out[i]);
 253         }
 254         reftable_free(out);
 255
 256         for (i = 0; i < 3; i++) {
 257                 strbuf_release(&bufs[i]);
 258         }
 259         readers_destroy(readers, 3);
 260         reftable_merged_table_free(mt);
 261         reftable_free(bs);
 262 }
 263
 264 static struct reftable_merged_table *
 265 merged_table_from_log_records(struct reftable_log_record **logs,
 266                               struct reftable_block_source **source,
 267                               struct reftable_reader ***readers, int *sizes,
 268                               struct strbuf *buf, int n)
 269 {
 270         int i = 0;
 271         struct reftable_merged_table *mt = NULL;
 272         int err;
 273         struct reftable_table *tabs =
 274                 reftable_calloc(n * sizeof(struct reftable_table));
 275         *readers = reftable_calloc(n * sizeof(struct reftable_reader *));
 276         *source = reftable_calloc(n * sizeof(**source));
 277         for (i = 0; i < n; i++) {
 278                 write_test_log_table(&buf[i], logs[i], sizes[i], i + 1);
 279                 block_source_from_strbuf(&(*source)[i], &buf[i]);
 280
 281                 err = reftable_new_reader(&(*readers)[i], &(*source)[i],
 282                                           "name");
 283                 EXPECT_ERR(err);
 284                 reftable_table_from_reader(&tabs[i], (*readers)[i]);
 285         }
 286
 287         err = reftable_new_merged_table(&mt, tabs, n, GIT_SHA1_FORMAT_ID);
 288         EXPECT_ERR(err);
 289         return mt;
 290 }
 291
 292 static void test_merged_logs(void)
 293 {
 294         uint8_t hash1[GIT_SHA1_RAWSZ] = { 1 };
 295         uint8_t hash2[GIT_SHA1_RAWSZ] = { 2 };
 296         uint8_t hash3[GIT_SHA1_RAWSZ] = { 3 };
 297         struct reftable_log_record r1[] = {
 298                 {
 299                         .refname = "a",
 300                         .update_index = 2,
 301                         .value_type = REFTABLE_LOG_UPDATE,
 302                         .value.update = {
 303                                 .old_hash = hash2,
 304                                 /* deletion */
 305                                 .name = "jane doe",
 306                                 .email = "jane@invalid",
 307                                 .message = "message2",
 308                         }
 309                 },
 310                 {
 311                         .refname = "a",
 312                         .update_index = 1,
 313                         .value_type = REFTABLE_LOG_UPDATE,
 314                         .value.update = {
 315                                 .old_hash = hash1,
 316                                 .new_hash = hash2,
 317                                 .name = "jane doe",
 318                                 .email = "jane@invalid",
 319                                 .message = "message1",
 320                         }
 321                 },
 322         };
 323         struct reftable_log_record r2[] = {
 324                 {
 325                         .refname = "a",
 326                         .update_index = 3,
 327                         .value_type = REFTABLE_LOG_UPDATE,
 328                         .value.update = {
 329                                 .new_hash = hash3,
 330                                 .name = "jane doe",
 331                                 .email = "jane@invalid",
 332                                 .message = "message3",
 333                         }
 334                 },
 335         };
 336         struct reftable_log_record r3[] = {
 337                 {
 338                         .refname = "a",
 339                         .update_index = 2,
 340                         .value_type = REFTABLE_LOG_DELETION,
 341                 },
 342         };
 343         struct reftable_log_record *want[] = {
 344                 &r2[0],
 345                 &r3[0],
 346                 &r1[1],
 347         };
 348
 349         struct reftable_log_record *logs[] = { r1, r2, r3 };
 350         int sizes[3] = { 2, 1, 1 };
 351         struct strbuf bufs[3] = { STRBUF_INIT, STRBUF_INIT, STRBUF_INIT };
 352         struct reftable_block_source *bs = NULL;
 353         struct reftable_reader **readers = NULL;
 354         struct reftable_merged_table *mt = merged_table_from_log_records(
 355                 logs, &bs, &readers, sizes, bufs, 3);
 356
 357         struct reftable_iterator it = { NULL };
 358         int err = reftable_merged_table_seek_log(mt, &it, "a");
 359         struct reftable_log_record *out = NULL;
 360         size_t len = 0;
 361         size_t cap = 0;
 362         int i = 0;
 363
 364         EXPECT_ERR(err);
 365         EXPECT(reftable_merged_table_hash_id(mt) == GIT_SHA1_FORMAT_ID);
 366         EXPECT(reftable_merged_table_min_update_index(mt) == 1);
 367
 368         while (len < 100) { /* cap loops/recursion. */
 369                 struct reftable_log_record log = { NULL };
 370                 int err = reftable_iterator_next_log(&it, &log);
 371                 if (err > 0) {
 372                         break;
 373                 }
 374                 if (len == cap) {
 375                         cap = 2 * cap + 1;
 376                         out = reftable_realloc(
 377                                 out, sizeof(struct reftable_log_record) * cap);
 378                 }
 379                 out[len++] = log;
 380         }
 381         reftable_iterator_destroy(&it);
 382
 383         EXPECT(ARRAY_SIZE(want) == len);
 384         for (i = 0; i < len; i++) {
 385                 EXPECT(reftable_log_record_equal(want[i], &out[i],
 386                                                  GIT_SHA1_RAWSZ));
 387         }
 388
 389         err = reftable_merged_table_seek_log_at(mt, &it, "a", 2);
 390         EXPECT_ERR(err);
 391         reftable_log_record_release(&out[0]);
 392         err = reftable_iterator_next_log(&it, &out[0]);
 393         EXPECT_ERR(err);
 394         EXPECT(reftable_log_record_equal(&out[0], &r3[0], GIT_SHA1_RAWSZ));
 395         reftable_iterator_destroy(&it);
 396
 397         for (i = 0; i < len; i++) {
 398                 reftable_log_record_release(&out[i]);
 399         }
 400         reftable_free(out);
 401
 402         for (i = 0; i < 3; i++) {
 403                 strbuf_release(&bufs[i]);
 404         }
 405         readers_destroy(readers, 3);
 406         reftable_merged_table_free(mt);
 407         reftable_free(bs);
 408 }
 409
 410 static void test_default_write_opts(void)
 411 {
 412         struct reftable_write_options opts = { 0 };
 413         struct strbuf buf = STRBUF_INIT;
 414         struct reftable_writer *w =
 415                 reftable_new_writer(&strbuf_add_void, &noop_flush, &buf, &opts);
 416
 417         struct reftable_ref_record rec = {
 418                 .refname = "master",
 419                 .update_index = 1,
 420         };
 421         int err;
 422         struct reftable_block_source source = { NULL };
 423         struct reftable_table *tab = reftable_calloc(sizeof(*tab) * 1);
 424         uint32_t hash_id;
 425         struct reftable_reader *rd = NULL;
 426         struct reftable_merged_table *merged = NULL;
 427
 428         reftable_writer_set_limits(w, 1, 1);
 429
 430         err = reftable_writer_add_ref(w, &rec);
 431         EXPECT_ERR(err);
 432
 433         err = reftable_writer_close(w);
 434         EXPECT_ERR(err);
 435         reftable_writer_free(w);
 436
 437         block_source_from_strbuf(&source, &buf);
 438
 439         err = reftable_new_reader(&rd, &source, "filename");
 440         EXPECT_ERR(err);
 441
 442         hash_id = reftable_reader_hash_id(rd);
 443         EXPECT(hash_id == GIT_SHA1_FORMAT_ID);
 444
 445         reftable_table_from_reader(&tab[0], rd);
 446         err = reftable_new_merged_table(&merged, tab, 1, GIT_SHA1_FORMAT_ID);
 447         EXPECT_ERR(err);
 448
 449         reftable_reader_free(rd);
 450         reftable_merged_table_free(merged);
 451         strbuf_release(&buf);
 452 }
 453
 454 /* XXX test refs_for(oid) */
 455
 456 int merged_test_main(int argc, const char *argv[])
 457 {
 458         RUN_TEST(test_merged_logs);
 459         RUN_TEST(test_merged_between);
 460         RUN_TEST(test_merged);
 461         RUN_TEST(test_default_write_opts);
 462         return 0;
 463 }