Andrew's git - gitweb.git/blob - t/t5616-partial-clone.sh

   1#!/bin/sh
   2
   3test_description='git partial clone'
   4
   5. ./test-lib.sh
   6
   7# create a normal "src" repo where we can later create new commits.
   8# expect_1.oids will contain a list of the OIDs of all blobs.
   9test_expect_success 'setup normal src repo' '
  10        echo "{print \$1}" >print_1.awk &&
  11        echo "{print \$2}" >print_2.awk &&
  12
  13        git init src &&
  14        for n in 1 2 3 4
  15        do
  16                echo "This is file: $n" > src/file.$n.txt
  17                git -C src add file.$n.txt
  18                git -C src commit -m "file $n"
  19                git -C src ls-files -s file.$n.txt >>temp
  20        done &&
  21        awk -f print_2.awk <temp | sort >expect_1.oids &&
  22        test_line_count = 4 expect_1.oids
  23'
  24
  25# bare clone "src" giving "srv.bare" for use as our server.
  26test_expect_success 'setup bare clone for server' '
  27        git clone --bare "file://$(pwd)/src" srv.bare &&
  28        git -C srv.bare config --local uploadpack.allowfilter 1 &&
  29        git -C srv.bare config --local uploadpack.allowanysha1inwant 1
  30'
  31
  32# do basic partial clone from "srv.bare"
  33# confirm we are missing all of the known blobs.
  34# confirm partial clone was registered in the local config.
  35test_expect_success 'do partial clone 1' '
  36        git clone --no-checkout --filter=blob:none "file://$(pwd)/srv.bare" pc1 &&
  37
  38        git -C pc1 rev-list --quiet --objects --missing=print HEAD >revs &&
  39        awk -f print_1.awk revs |
  40        sed "s/?//" |
  41        sort >observed.oids &&
  42
  43        test_cmp expect_1.oids observed.oids &&
  44        test "$(git -C pc1 config --local core.repositoryformatversion)" = "1" &&
  45        test "$(git -C pc1 config --local extensions.partialclone)" = "origin" &&
  46        test "$(git -C pc1 config --local core.partialclonefilter)" = "blob:none"
  47'
  48
  49# checkout master to force dynamic object fetch of blobs at HEAD.
  50test_expect_success 'verify checkout with dynamic object fetch' '
  51        git -C pc1 rev-list --quiet --objects --missing=print HEAD >observed &&
  52        test_line_count = 4 observed &&
  53        git -C pc1 checkout master &&
  54        git -C pc1 rev-list --quiet --objects --missing=print HEAD >observed &&
  55        test_line_count = 0 observed
  56'
  57
  58# create new commits in "src" repo to establish a blame history on file.1.txt
  59# and push to "srv.bare".
  60test_expect_success 'push new commits to server' '
  61        git -C src remote add srv "file://$(pwd)/srv.bare" &&
  62        for x in a b c d e
  63        do
  64                echo "Mod file.1.txt $x" >>src/file.1.txt
  65                git -C src add file.1.txt
  66                git -C src commit -m "mod $x"
  67        done &&
  68        git -C src blame master -- file.1.txt >expect.blame &&
  69        git -C src push -u srv master
  70'
  71
  72# (partial) fetch in the partial clone repo from the promisor remote.
  73# verify that fetch inherited the filter-spec from the config and DOES NOT
  74# have the new blobs.
  75test_expect_success 'partial fetch inherits filter settings' '
  76        git -C pc1 fetch origin &&
  77        git -C pc1 rev-list --quiet --objects --missing=print \
  78                master..origin/master >observed &&
  79        test_line_count = 5 observed
  80'
  81
  82# force dynamic object fetch using diff.
  83# we should only get 1 new blob (for the file in origin/master).
  84test_expect_success 'verify diff causes dynamic object fetch' '
  85        git -C pc1 diff master..origin/master -- file.1.txt &&
  86        git -C pc1 rev-list --quiet --objects --missing=print \
  87                 master..origin/master >observed &&
  88        test_line_count = 4 observed
  89'
  90
  91# force full dynamic object fetch of the file's history using blame.
  92# we should get the intermediate blobs for the file.
  93test_expect_success 'verify blame causes dynamic object fetch' '
  94        git -C pc1 blame origin/master -- file.1.txt >observed.blame &&
  95        test_cmp expect.blame observed.blame &&
  96        git -C pc1 rev-list --quiet --objects --missing=print \
  97                master..origin/master >observed &&
  98        test_line_count = 0 observed
  99'
 100
 101# create new commits in "src" repo to establish a history on file.2.txt
 102# and push to "srv.bare".
 103test_expect_success 'push new commits to server for file.2.txt' '
 104        for x in a b c d e f
 105        do
 106                echo "Mod file.2.txt $x" >>src/file.2.txt
 107                git -C src add file.2.txt
 108                git -C src commit -m "mod $x"
 109        done &&
 110        git -C src push -u srv master
 111'
 112
 113# Do FULL fetch by disabling inherited filter-spec using --no-filter.
 114# Verify we have all the new blobs.
 115test_expect_success 'override inherited filter-spec using --no-filter' '
 116        git -C pc1 fetch --no-filter origin &&
 117        git -C pc1 rev-list --quiet --objects --missing=print \
 118                master..origin/master >observed &&
 119        test_line_count = 0 observed
 120'
 121
 122# create new commits in "src" repo to establish a history on file.3.txt
 123# and push to "srv.bare".
 124test_expect_success 'push new commits to server for file.3.txt' '
 125        for x in a b c d e f
 126        do
 127                echo "Mod file.3.txt $x" >>src/file.3.txt
 128                git -C src add file.3.txt
 129                git -C src commit -m "mod $x"
 130        done &&
 131        git -C src push -u srv master
 132'
 133
 134# Do a partial fetch and then try to manually fetch the missing objects.
 135# This can be used as the basis of a pre-command hook to bulk fetch objects
 136# perhaps combined with a command in dry-run mode.
 137test_expect_success 'manual prefetch of missing objects' '
 138        git -C pc1 fetch --filter=blob:none origin &&
 139
 140        git -C pc1 rev-list --quiet --objects --missing=print \
 141                 master..origin/master >revs &&
 142        awk -f print_1.awk revs |
 143        sed "s/?//" |
 144        sort >observed.oids &&
 145
 146        test_line_count = 6 observed.oids &&
 147        git -C pc1 fetch-pack --stdin "file://$(pwd)/srv.bare" <observed.oids &&
 148
 149        git -C pc1 rev-list --quiet --objects --missing=print \
 150                master..origin/master >revs &&
 151        awk -f print_1.awk revs |
 152        sed "s/?//" |
 153        sort >observed.oids &&
 154
 155        test_line_count = 0 observed.oids
 156'
 157
 158test_expect_success 'partial clone with transfer.fsckobjects=1 uses index-pack --fsck-objects' '
 159        git init src &&
 160        test_commit -C src x &&
 161        test_config -C src uploadpack.allowfilter 1 &&
 162        test_config -C src uploadpack.allowanysha1inwant 1 &&
 163
 164        GIT_TRACE="$(pwd)/trace" git -c transfer.fsckobjects=1 \
 165                clone --filter="blob:none" "file://$(pwd)/src" dst &&
 166        grep "git index-pack.*--fsck-objects" trace
 167'
 168
 169test_expect_success 'partial clone fetches blobs pointed to by refs even if normally filtered out' '
 170        rm -rf src dst &&
 171        git init src &&
 172        test_commit -C src x &&
 173        test_config -C src uploadpack.allowfilter 1 &&
 174        test_config -C src uploadpack.allowanysha1inwant 1 &&
 175
 176        # Create a tag pointing to a blob.
 177        BLOB=$(echo blob-contents | git -C src hash-object --stdin -w) &&
 178        git -C src tag myblob "$BLOB" &&
 179
 180        git clone --filter="blob:none" "file://$(pwd)/src" dst 2>err &&
 181        ! grep "does not point to a valid object" err &&
 182        git -C dst fsck
 183'
 184
 185. "$TEST_DIRECTORY"/lib-httpd.sh
 186start_httpd
 187
 188# Converts bytes into a form suitable for inclusion in a sed command. For
 189# example, "printf 'ab\r\n' | hex_unpack" results in '\x61\x62\x0d\x0a'.
 190sed_escape () {
 191        perl -e '$/ = undef; $input = <>; print unpack("H2" x length($input), $input)' |
 192                sed 's/\(..\)/\\x\1/g'
 193}
 194
 195test_expect_success 'upon cloning, check that all refs point to objects' '
 196        SERVER="$HTTPD_DOCUMENT_ROOT_PATH/server" &&
 197        rm -rf "$SERVER" repo &&
 198        test_create_repo "$SERVER" &&
 199        test_commit -C "$SERVER" foo &&
 200        test_config -C "$SERVER" uploadpack.allowfilter 1 &&
 201        test_config -C "$SERVER" uploadpack.allowanysha1inwant 1 &&
 202
 203        # Create a tag pointing to a blob.
 204        BLOB=$(echo blob-contents | git -C "$SERVER" hash-object --stdin -w) &&
 205        git -C "$SERVER" tag myblob "$BLOB" &&
 206
 207        # Craft a packfile not including that blob.
 208        git -C "$SERVER" rev-parse HEAD |
 209        git -C "$SERVER" pack-objects --stdout >incomplete.pack &&
 210
 211        # Replace the existing packfile with the crafted one. The protocol
 212        # requires that the packfile be sent in sideband 1, hence the extra
 213        # \x01 byte at the beginning.
 214        printf "1,/packfile/!c %04x\\\\x01%s0000" \
 215                "$(($(wc -c <incomplete.pack) + 5))" \
 216                "$(sed_escape <incomplete.pack)" \
 217                >"$HTTPD_ROOT_PATH/one-time-sed" &&
 218
 219        # Use protocol v2 because the sed command looks for the "packfile"
 220        # section header.
 221        test_config -C "$SERVER" protocol.version 2 &&
 222        test_must_fail git -c protocol.version=2 clone \
 223                --filter=blob:none $HTTPD_URL/one_time_sed/server repo 2>err &&
 224
 225        grep "did not send all necessary objects" err &&
 226
 227        # Ensure that the one-time-sed script was used.
 228        ! test -e "$HTTPD_ROOT_PATH/one-time-sed"
 229'
 230
 231test_expect_success 'when partial cloning, tolerate server not sending target of tag' '
 232        SERVER="$HTTPD_DOCUMENT_ROOT_PATH/server" &&
 233        rm -rf "$SERVER" repo &&
 234        test_create_repo "$SERVER" &&
 235        test_commit -C "$SERVER" foo &&
 236        test_config -C "$SERVER" uploadpack.allowfilter 1 &&
 237        test_config -C "$SERVER" uploadpack.allowanysha1inwant 1 &&
 238
 239        # Create an annotated tag pointing to a blob.
 240        BLOB=$(echo blob-contents | git -C "$SERVER" hash-object --stdin -w) &&
 241        git -C "$SERVER" tag -m message -a myblob "$BLOB" &&
 242
 243        # Craft a packfile including the tag, but not the blob it points to.
 244        # Also, omit objects referenced from HEAD in order to force a second
 245        # fetch (to fetch missing objects) upon the automatic checkout that
 246        # happens after a clone.
 247        printf "%s\n%s\n--not\n%s\n%s\n" \
 248                $(git -C "$SERVER" rev-parse HEAD) \
 249                $(git -C "$SERVER" rev-parse myblob) \
 250                $(git -C "$SERVER" rev-parse HEAD^{tree}) \
 251                $(git -C "$SERVER" rev-parse myblob^{blob}) |
 252                git -C "$SERVER" pack-objects --thin --stdout >incomplete.pack &&
 253
 254        # Replace the existing packfile with the crafted one. The protocol
 255        # requires that the packfile be sent in sideband 1, hence the extra
 256        # \x01 byte at the beginning.
 257        printf "1,/packfile/!c %04x\\\\x01%s0000" \
 258                "$(($(wc -c <incomplete.pack) + 5))" \
 259                "$(sed_escape <incomplete.pack)" \
 260                >"$HTTPD_ROOT_PATH/one-time-sed" &&
 261
 262        # Use protocol v2 because the sed command looks for the "packfile"
 263        # section header.
 264        test_config -C "$SERVER" protocol.version 2 &&
 265
 266        # Exercise to make sure it works.
 267        git -c protocol.version=2 clone \
 268                --filter=blob:none $HTTPD_URL/one_time_sed/server repo 2> err &&
 269        ! grep "missing object referenced by" err &&
 270
 271        # Ensure that the one-time-sed script was used.
 272        ! test -e "$HTTPD_ROOT_PATH/one-time-sed"
 273'
 274
 275stop_httpd
 276
 277test_done