| 1 | #!/bin/sh |
| 2 | |
| 3 | test_description='multi-pack-index compaction' |
| 4 | |
| 5 | . ./test-lib.sh |
| 6 | |
| 7 | GIT_TEST_MULTI_PACK_INDEX=0 |
| 8 | GIT_TEST_MULTI_PACK_INDEX_WRITE_BITMAP=0 |
| 9 | GIT_TEST_MULTI_PACK_INDEX_WRITE_INCREMENTAL=0 |
| 10 | |
| 11 | objdir=.git/objects |
| 12 | packdir=$objdir/pack |
| 13 | midxdir=$packdir/multi-pack-index.d |
| 14 | midx_chain=$midxdir/multi-pack-index-chain |
| 15 | |
| 16 | nth_line() { |
| 17 | local n="$1" |
| 18 | shift |
| 19 | awk "NR==$n" "$@" |
| 20 | } |
| 21 | |
| 22 | write_packs () { |
| 23 | for c in "$@" |
| 24 | do |
| 25 | test_commit "$c" && |
| 26 | |
| 27 | git pack-objects --all --unpacked $packdir/pack-$c && |
| 28 | git prune-packed && |
| 29 | |
| 30 | git multi-pack-index write --incremental --bitmap || return 1 |
| 31 | done |
| 32 | } |
| 33 | |
| 34 | test_midx_layer_packs () { |
| 35 | local checksum="$1" && |
| 36 | shift && |
| 37 | |
| 38 | test-tool read-midx $objdir "$checksum" >out && |
| 39 | |
| 40 | printf "%s\n" "$@" >expect && |
| 41 | # NOTE: do *not* pipe through sort here, we want to ensure the |
| 42 | # order of packs is preserved during compaction. |
| 43 | grep "^pack-" out | cut -d"-" -f2 >actual && |
| 44 | |
| 45 | test_cmp expect actual |
| 46 | } |
| 47 | |
| 48 | test_midx_layer_object_uniqueness () { |
| 49 | : >objs.all |
| 50 | while read layer |
| 51 | do |
| 52 | test-tool read-midx --show-objects $objdir "$layer" >out && |
| 53 | grep "\.pack$" out | cut -d" " -f1 | sort >objs.layer && |
| 54 | test_stdout_line_count = 0 comm -12 objs.all objs.layer && |
| 55 | cat objs.all objs.layer | sort >objs.tmp && |
| 56 | mv objs.tmp objs.all || return 1 |
| 57 | done <$midx_chain |
| 58 | } |
| 59 | |
| 60 | test_expect_success 'MIDX compaction with lex-ordered pack names' ' |
| 61 | git init midx-compact-lex-order && |
| 62 | ( |
| 63 | cd midx-compact-lex-order && |
| 64 | |
| 65 | git config maintenance.auto false && |
| 66 | |
| 67 | write_packs A B C D E && |
| 68 | test_line_count = 5 $midx_chain && |
| 69 | |
| 70 | git multi-pack-index compact --incremental --bitmap \ |
| 71 | "$(nth_line 2 "$midx_chain")" \ |
| 72 | "$(nth_line 4 "$midx_chain")" && |
| 73 | test_line_count = 3 $midx_chain && |
| 74 | |
| 75 | test_midx_layer_packs "$(nth_line 1 "$midx_chain")" A && |
| 76 | test_midx_layer_packs "$(nth_line 2 "$midx_chain")" B C D && |
| 77 | test_midx_layer_packs "$(nth_line 3 "$midx_chain")" E && |
| 78 | |
| 79 | test_midx_layer_object_uniqueness |
| 80 | ) |
| 81 | ' |
| 82 | |
| 83 | test_expect_success 'MIDX compaction with non-lex-ordered pack names' ' |
| 84 | git init midx-compact-non-lex-order && |
| 85 | ( |
| 86 | cd midx-compact-non-lex-order && |
| 87 | |
| 88 | git config maintenance.auto false && |
| 89 | |
| 90 | write_packs D C A B E && |
| 91 | test_line_count = 5 $midx_chain && |
| 92 | |
| 93 | git multi-pack-index compact --incremental --bitmap \ |
| 94 | "$(nth_line 2 "$midx_chain")" \ |
| 95 | "$(nth_line 4 "$midx_chain")" && |
| 96 | test_line_count = 3 $midx_chain && |
| 97 | |
| 98 | test_midx_layer_packs "$(nth_line 1 "$midx_chain")" D && |
| 99 | test_midx_layer_packs "$(nth_line 2 "$midx_chain")" C A B && |
| 100 | test_midx_layer_packs "$(nth_line 3 "$midx_chain")" E && |
| 101 | |
| 102 | test_midx_layer_object_uniqueness |
| 103 | ) |
| 104 | ' |
| 105 | |
| 106 | test_expect_success 'setup for bogus MIDX compaction scenarios' ' |
| 107 | git init midx-compact-bogus && |
| 108 | ( |
| 109 | cd midx-compact-bogus && |
| 110 | |
| 111 | git config maintenance.auto false && |
| 112 | |
| 113 | write_packs A B C |
| 114 | ) |
| 115 | ' |
| 116 | |
| 117 | test_expect_success 'MIDX compaction with missing endpoints' ' |
| 118 | ( |
| 119 | cd midx-compact-bogus && |
| 120 | |
| 121 | test_must_fail git multi-pack-index compact --incremental \ |
| 122 | "<missing>" "<missing>" 2>err && |
| 123 | test_grep "could not find MIDX: <missing>" err && |
| 124 | |
| 125 | test_must_fail git multi-pack-index compact --incremental \ |
| 126 | "<missing>" "$(nth_line 2 "$midx_chain")" 2>err && |
| 127 | test_grep "could not find MIDX: <missing>" err && |
| 128 | |
| 129 | test_must_fail git multi-pack-index compact --incremental \ |
| 130 | "$(nth_line 2 "$midx_chain")" "<missing>" 2>err && |
| 131 | test_grep "could not find MIDX: <missing>" err |
| 132 | ) |
| 133 | ' |
| 134 | |
| 135 | test_expect_success 'MIDX compaction with reversed endpoints' ' |
| 136 | ( |
| 137 | cd midx-compact-bogus && |
| 138 | |
| 139 | from="$(nth_line 3 "$midx_chain")" && |
| 140 | to="$(nth_line 1 "$midx_chain")" && |
| 141 | |
| 142 | test_must_fail git multi-pack-index compact --incremental \ |
| 143 | "$from" "$to" 2>err && |
| 144 | |
| 145 | test_grep "MIDX $from must be an ancestor of $to" err |
| 146 | ) |
| 147 | ' |
| 148 | |
| 149 | test_expect_success 'MIDX compaction with identical endpoints' ' |
| 150 | ( |
| 151 | cd midx-compact-bogus && |
| 152 | |
| 153 | from="$(nth_line 3 "$midx_chain")" && |
| 154 | to="$(nth_line 3 "$midx_chain")" && |
| 155 | |
| 156 | test_must_fail git multi-pack-index compact --incremental \ |
| 157 | "$from" "$to" 2>err && |
| 158 | |
| 159 | test_grep "MIDX compaction endpoints must be unique" err |
| 160 | ) |
| 161 | ' |
| 162 | |
| 163 | test_expect_success 'MIDX compaction with midx.version=1' ' |
| 164 | ( |
| 165 | cd midx-compact-bogus && |
| 166 | |
| 167 | test_must_fail git -c midx.version=1 multi-pack-index compact \ |
| 168 | "$(nth_line 1 "$midx_chain")" \ |
| 169 | "$(nth_line 2 "$midx_chain")" 2>err && |
| 170 | |
| 171 | test_grep "fatal: cannot perform MIDX compaction with v1 format" err |
| 172 | ) |
| 173 | ' |
| 174 | |
| 175 | midx_objs_by_pack () { |
| 176 | awk '/\.pack$/ { split($3, a, "-"); print a[2], $1 }' | sort |
| 177 | } |
| 178 | |
| 179 | tag_objs_from_pack () { |
| 180 | objs="$(git rev-list --objects --no-object-names "$2")" && |
| 181 | printf "$1 %s\n" $objs | sort |
| 182 | } |
| 183 | |
| 184 | test_expect_success 'MIDX compaction preserves pack object selection' ' |
| 185 | git init midx-compact-preserve-selection && |
| 186 | ( |
| 187 | cd midx-compact-preserve-selection && |
| 188 | |
| 189 | git config maintenance.auto false && |
| 190 | |
| 191 | test_commit A && |
| 192 | test_commit B && |
| 193 | |
| 194 | # Create two packs, one containing just the objects from |
| 195 | # A, and another containing all objects from the |
| 196 | # repository. |
| 197 | p1="$(echo A | git pack-objects --revs --delta-base-offset \ |
| 198 | $packdir/pack-1)" && |
| 199 | p0="$(echo B | git pack-objects --revs --delta-base-offset \ |
| 200 | $packdir/pack-0)" && |
| 201 | |
| 202 | echo "pack-1-$p1.idx" | git multi-pack-index write \ |
| 203 | --incremental --bitmap --stdin-packs && |
| 204 | echo "pack-0-$p0.idx" | git multi-pack-index write \ |
| 205 | --incremental --bitmap --stdin-packs && |
| 206 | |
| 207 | write_packs C && |
| 208 | |
| 209 | git multi-pack-index compact --incremental --bitmap \ |
| 210 | "$(nth_line 1 "$midx_chain")" \ |
| 211 | "$(nth_line 2 "$midx_chain")" && |
| 212 | |
| 213 | |
| 214 | test-tool read-midx --show-objects $objdir \ |
| 215 | "$(nth_line 1 "$midx_chain")" >AB.info && |
| 216 | test-tool read-midx --show-objects $objdir \ |
| 217 | "$(nth_line 2 "$midx_chain")" >C.info && |
| 218 | |
| 219 | midx_objs_by_pack <AB.info >AB.actual && |
| 220 | midx_objs_by_pack <C.info >C.actual && |
| 221 | |
| 222 | { |
| 223 | tag_objs_from_pack 1 A && |
| 224 | tag_objs_from_pack 0 A..B |
| 225 | } | sort >AB.expect && |
| 226 | tag_objs_from_pack C B..C >C.expect && |
| 227 | |
| 228 | test_cmp AB.expect AB.actual && |
| 229 | test_cmp C.expect C.actual |
| 230 | ) |
| 231 | ' |
| 232 | |
| 233 | test_expect_success 'MIDX compaction with bitmaps' ' |
| 234 | git init midx-compact-with-bitmaps && |
| 235 | ( |
| 236 | cd midx-compact-with-bitmaps && |
| 237 | |
| 238 | git config maintenance.auto false && |
| 239 | |
| 240 | write_packs foo bar baz quux woot && |
| 241 | |
| 242 | test-tool read-midx --bitmap $objdir >bitmap.expect && |
| 243 | git multi-pack-index compact --incremental --bitmap \ |
| 244 | "$(nth_line 2 "$midx_chain")" \ |
| 245 | "$(nth_line 4 "$midx_chain")" && |
| 246 | test-tool read-midx --bitmap $objdir >bitmap.actual && |
| 247 | |
| 248 | test_cmp bitmap.expect bitmap.actual && |
| 249 | |
| 250 | true |
| 251 | ) |
| 252 | ' |
| 253 | |
| 254 | test_expect_success 'MIDX compaction with bitmaps (non-trivial)' ' |
| 255 | git init midx-compact-with-bitmaps-non-trivial && |
| 256 | ( |
| 257 | cd midx-compact-with-bitmaps-non-trivial && |
| 258 | |
| 259 | git config maintenance.auto false && |
| 260 | |
| 261 | git branch -m main && |
| 262 | |
| 263 | # D(4) |
| 264 | # / |
| 265 | # A(1) --- B(2) --- C(3) --- G(7) |
| 266 | # \ |
| 267 | # E(5) --- F(6) |
| 268 | write_packs A B C && |
| 269 | git checkout -b side && |
| 270 | write_packs D && |
| 271 | git checkout -b other B && |
| 272 | write_packs E F && |
| 273 | git checkout main && |
| 274 | write_packs G && |
| 275 | |
| 276 | # Compact layers 2-4, leaving us with: |
| 277 | # |
| 278 | # [A, [B, C, D], E, F, G] |
| 279 | git multi-pack-index compact --incremental --bitmap \ |
| 280 | "$(nth_line 2 "$midx_chain")" \ |
| 281 | "$(nth_line 4 "$midx_chain")" && |
| 282 | |
| 283 | # Then compact the top two layers, condensing the above |
| 284 | # such that the new 4th layer contains F and G. |
| 285 | # |
| 286 | # [A, [B, C, D], E, [F, G]] |
| 287 | git multi-pack-index compact --incremental --bitmap \ |
| 288 | "$(nth_line 4 "$midx_chain")" \ |
| 289 | "$(nth_line 5 "$midx_chain")" |
| 290 | ) |
| 291 | ' |
| 292 | |
| 293 | test_expect_success 'MIDX compaction with --no-write-chain-file' ' |
| 294 | git init midx-compact-with--no-write-chain-file && |
| 295 | ( |
| 296 | cd midx-compact-with--no-write-chain-file && |
| 297 | |
| 298 | git config maintenance.auto false && |
| 299 | |
| 300 | write_packs A B C D && |
| 301 | |
| 302 | test_line_count = 4 $midx_chain && |
| 303 | cp "$midx_chain" "$midx_chain".bak && |
| 304 | |
| 305 | layer="$(git multi-pack-index compact --incremental \ |
| 306 | --no-write-chain-file \ |
| 307 | --base="$(nth_line 1 "$midx_chain")" \ |
| 308 | "$(nth_line 2 "$midx_chain")" \ |
| 309 | "$(nth_line 3 "$midx_chain")")" && |
| 310 | |
| 311 | test_cmp "$midx_chain.bak" "$midx_chain" && |
| 312 | |
| 313 | # After writing the new layer, insert it into the chain |
| 314 | # manually. This is done in order to make $layer visible |
| 315 | # to the read-midx test helper below, and matches what |
| 316 | # the MIDX command would do without --no-write-chain-file. |
| 317 | { |
| 318 | nth_line 1 "$midx_chain.bak" && |
| 319 | echo $layer && |
| 320 | nth_line 4 "$midx_chain.bak" |
| 321 | } >$midx_chain && |
| 322 | |
| 323 | test-tool read-midx $objdir $layer >midx.data && |
| 324 | grep "^pack-B-.*\.idx" midx.data && |
| 325 | grep "^pack-C-.*\.idx" midx.data |
| 326 | |
| 327 | ) |
| 328 | ' |
| 329 | |
| 330 | test_expect_success 'MIDX compaction with --base' ' |
| 331 | git init midx-compact-with--base && |
| 332 | ( |
| 333 | cd midx-compact-with--base && |
| 334 | |
| 335 | git config maintenance.auto false && |
| 336 | |
| 337 | write_packs A B C D && |
| 338 | |
| 339 | test_line_count = 4 "$midx_chain" && |
| 340 | |
| 341 | cp "$midx_chain" "$midx_chain.bak" && |
| 342 | |
| 343 | git multi-pack-index compact --incremental \ |
| 344 | --base="$(nth_line 1 "$midx_chain")" \ |
| 345 | "$(nth_line 3 "$midx_chain")" \ |
| 346 | "$(nth_line 4 "$midx_chain")" && |
| 347 | test_line_count = 2 $midx_chain && |
| 348 | |
| 349 | nth_line 1 "$midx_chain.bak" >expect && |
| 350 | nth_line 1 "$midx_chain" >actual && |
| 351 | |
| 352 | test_cmp expect actual |
| 353 | ) |
| 354 | ' |
| 355 | |
| 356 | test_expect_success 'MIDX compaction with --base=none' ' |
| 357 | git init midx-compact-base-none && |
| 358 | ( |
| 359 | cd midx-compact-base-none && |
| 360 | |
| 361 | git config maintenance.auto false && |
| 362 | |
| 363 | write_packs A B C D && |
| 364 | |
| 365 | test_line_count = 4 $midx_chain && |
| 366 | |
| 367 | cp "$midx_chain" "$midx_chain".bak && |
| 368 | |
| 369 | # Compact the two bottommost layers (A and B) into a new |
| 370 | # root layer with no parent. |
| 371 | git multi-pack-index compact --incremental \ |
| 372 | --base=none \ |
| 373 | "$(nth_line 1 "$midx_chain")" \ |
| 374 | "$(nth_line 2 "$midx_chain")" && |
| 375 | |
| 376 | test_line_count = 3 $midx_chain && |
| 377 | |
| 378 | # The upper layers (C and D) should be preserved |
| 379 | # unchanged. |
| 380 | nth_line 3 "$midx_chain.bak" >expect && |
| 381 | nth_line 4 "$midx_chain.bak" >>expect && |
| 382 | nth_line 2 "$midx_chain" >actual && |
| 383 | nth_line 3 "$midx_chain" >>actual && |
| 384 | |
| 385 | test_cmp expect actual |
| 386 | ) |
| 387 | ' |
| 388 | |
| 389 | test_expect_success 'MIDX compaction with bogus --base checksum' ' |
| 390 | git init midx-compact-bogus-base && |
| 391 | ( |
| 392 | cd midx-compact-bogus-base && |
| 393 | |
| 394 | git config maintenance.auto false && |
| 395 | |
| 396 | write_packs A B C && |
| 397 | |
| 398 | test_must_fail git multi-pack-index compact --incremental \ |
| 399 | --base=deadbeef \ |
| 400 | "$(nth_line 2 "$midx_chain")" \ |
| 401 | "$(nth_line 3 "$midx_chain")" 2>err && |
| 402 | test_grep "could not find base MIDX" err |
| 403 | ) |
| 404 | ' |
| 405 | |
| 406 | test_done |