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#!/bin/sh
test_description='git partial clone'
. ./test-lib.sh
# create a normal "src" repo where we can later create new commits.
# expect_1.oids will contain a list of the OIDs of all blobs.
test_expect_success 'setup normal src repo' '
echo "{print \$1}" >print_1.awk &&
echo "{print \$2}" >print_2.awk &&
git init src &&
for n in 1 2 3 4
do
echo "This is file: $n" > src/file.$n.txt
git -C src add file.$n.txt
git -C src commit -m "file $n"
git -C src ls-files -s file.$n.txt >>temp
done &&
awk -f print_2.awk <temp | sort >expect_1.oids &&
test_line_count = 4 expect_1.oids
'
# bare clone "src" giving "srv.bare" for use as our server.
test_expect_success 'setup bare clone for server' '
git clone --bare "file://$(pwd)/src" srv.bare &&
git -C srv.bare config --local uploadpack.allowfilter 1 &&
git -C srv.bare config --local uploadpack.allowanysha1inwant 1
'
# do basic partial clone from "srv.bare"
# confirm we are missing all of the known blobs.
# confirm partial clone was registered in the local config.
test_expect_success 'do partial clone 1' '
git clone --no-checkout --filter=blob:none "file://$(pwd)/srv.bare" pc1 &&
git -C pc1 rev-list --quiet --objects --missing=print HEAD >revs &&
awk -f print_1.awk revs |
sed "s/?//" |
sort >observed.oids &&
test_cmp expect_1.oids observed.oids &&
test "$(git -C pc1 config --local core.repositoryformatversion)" = "1" &&
test "$(git -C pc1 config --local extensions.partialclone)" = "origin" &&
test "$(git -C pc1 config --local core.partialclonefilter)" = "blob:none"
'
# checkout master to force dynamic object fetch of blobs at HEAD.
test_expect_success 'verify checkout with dynamic object fetch' '
git -C pc1 rev-list --quiet --objects --missing=print HEAD >observed &&
test_line_count = 4 observed &&
git -C pc1 checkout master &&
git -C pc1 rev-list --quiet --objects --missing=print HEAD >observed &&
test_line_count = 0 observed
'
# create new commits in "src" repo to establish a blame history on file.1.txt
# and push to "srv.bare".
test_expect_success 'push new commits to server' '
git -C src remote add srv "file://$(pwd)/srv.bare" &&
for x in a b c d e
do
echo "Mod file.1.txt $x" >>src/file.1.txt
git -C src add file.1.txt
git -C src commit -m "mod $x"
done &&
git -C src blame master -- file.1.txt >expect.blame &&
git -C src push -u srv master
'
# (partial) fetch in the partial clone repo from the promisor remote.
# verify that fetch inherited the filter-spec from the config and DOES NOT
# have the new blobs.
test_expect_success 'partial fetch inherits filter settings' '
git -C pc1 fetch origin &&
git -C pc1 rev-list --quiet --objects --missing=print \
master..origin/master >observed &&
test_line_count = 5 observed
'
# force dynamic object fetch using diff.
# we should only get 1 new blob (for the file in origin/master).
test_expect_success 'verify diff causes dynamic object fetch' '
git -C pc1 diff master..origin/master -- file.1.txt &&
git -C pc1 rev-list --quiet --objects --missing=print \
master..origin/master >observed &&
test_line_count = 4 observed
'
# force full dynamic object fetch of the file's history using blame.
# we should get the intermediate blobs for the file.
test_expect_success 'verify blame causes dynamic object fetch' '
git -C pc1 blame origin/master -- file.1.txt >observed.blame &&
test_cmp expect.blame observed.blame &&
git -C pc1 rev-list --quiet --objects --missing=print \
master..origin/master >observed &&
test_line_count = 0 observed
'
# create new commits in "src" repo to establish a history on file.2.txt
# and push to "srv.bare".
test_expect_success 'push new commits to server for file.2.txt' '
for x in a b c d e f
do
echo "Mod file.2.txt $x" >>src/file.2.txt
git -C src add file.2.txt
git -C src commit -m "mod $x"
done &&
git -C src push -u srv master
'
# Do FULL fetch by disabling inherited filter-spec using --no-filter.
# Verify we have all the new blobs.
test_expect_success 'override inherited filter-spec using --no-filter' '
git -C pc1 fetch --no-filter origin &&
git -C pc1 rev-list --quiet --objects --missing=print \
master..origin/master >observed &&
test_line_count = 0 observed
'
# create new commits in "src" repo to establish a history on file.3.txt
# and push to "srv.bare".
test_expect_success 'push new commits to server for file.3.txt' '
for x in a b c d e f
do
echo "Mod file.3.txt $x" >>src/file.3.txt
git -C src add file.3.txt
git -C src commit -m "mod $x"
done &&
git -C src push -u srv master
'
# Do a partial fetch and then try to manually fetch the missing objects.
# This can be used as the basis of a pre-command hook to bulk fetch objects
# perhaps combined with a command in dry-run mode.
test_expect_success 'manual prefetch of missing objects' '
git -C pc1 fetch --filter=blob:none origin &&
git -C pc1 rev-list --quiet --objects --missing=print \
master..origin/master >revs &&
awk -f print_1.awk revs |
sed "s/?//" |
sort >observed.oids &&
test_line_count = 6 observed.oids &&
git -C pc1 fetch-pack --stdin "file://$(pwd)/srv.bare" <observed.oids &&
git -C pc1 rev-list --quiet --objects --missing=print \
master..origin/master >revs &&
awk -f print_1.awk revs |
sed "s/?//" |
sort >observed.oids &&
test_line_count = 0 observed.oids
'
test_expect_success 'partial clone with transfer.fsckobjects=1 uses index-pack --fsck-objects' '
git init src &&
test_commit -C src x &&
test_config -C src uploadpack.allowfilter 1 &&
test_config -C src uploadpack.allowanysha1inwant 1 &&
GIT_TRACE="$(pwd)/trace" git -c transfer.fsckobjects=1 \
clone --filter="blob:none" "file://$(pwd)/src" dst &&
grep "git index-pack.*--fsck-objects" trace
'
test_expect_success 'use fsck before and after manually fetching a missing subtree' '
# push new commit so server has a subtree
mkdir src/dir &&
echo "in dir" >src/dir/file.txt &&
git -C src add dir/file.txt &&
git -C src commit -m "file in dir" &&
git -C src push -u srv master &&
SUBTREE=$(git -C src rev-parse HEAD:dir) &&
rm -rf dst &&
git clone --no-checkout --filter=tree:0 "file://$(pwd)/srv.bare" dst &&
git -C dst fsck &&
# Make sure we only have commits, and all trees and blobs are missing.
git -C dst rev-list --missing=allow-any --objects master \
>fetched_objects &&
awk -f print_1.awk fetched_objects |
xargs -n1 git -C dst cat-file -t >fetched_types &&
sort -u fetched_types >unique_types.observed &&
echo commit >unique_types.expected &&
test_cmp unique_types.expected unique_types.observed &&
# Auto-fetch a tree with cat-file.
git -C dst cat-file -p $SUBTREE >tree_contents &&
grep file.txt tree_contents &&
# fsck still works after an auto-fetch of a tree.
git -C dst fsck &&
# Auto-fetch all remaining trees and blobs with --missing=error
git -C dst rev-list --missing=error --objects master >fetched_objects &&
test_line_count = 70 fetched_objects &&
awk -f print_1.awk fetched_objects |
xargs -n1 git -C dst cat-file -t >fetched_types &&
sort -u fetched_types >unique_types.observed &&
test_write_lines blob commit tree >unique_types.expected &&
test_cmp unique_types.expected unique_types.observed
'
test_expect_success 'partial clone fetches blobs pointed to by refs even if normally filtered out' '
rm -rf src dst &&
git init src &&
test_commit -C src x &&
test_config -C src uploadpack.allowfilter 1 &&
test_config -C src uploadpack.allowanysha1inwant 1 &&
# Create a tag pointing to a blob.
BLOB=$(echo blob-contents | git -C src hash-object --stdin -w) &&
git -C src tag myblob "$BLOB" &&
git clone --filter="blob:none" "file://$(pwd)/src" dst 2>err &&
! grep "does not point to a valid object" err &&
git -C dst fsck
'
test_expect_success 'fetch what is specified on CLI even if already promised' '
rm -rf src dst.git &&
git init src &&
test_commit -C src foo &&
test_config -C src uploadpack.allowfilter 1 &&
test_config -C src uploadpack.allowanysha1inwant 1 &&
git hash-object --stdin <src/foo.t >blob &&
git clone --bare --filter=blob:none "file://$(pwd)/src" dst.git &&
git -C dst.git rev-list --objects --quiet --missing=print HEAD >missing_before &&
grep "?$(cat blob)" missing_before &&
git -C dst.git fetch origin $(cat blob) &&
git -C dst.git rev-list --objects --quiet --missing=print HEAD >missing_after &&
! grep "?$(cat blob)" missing_after
'
. "$TEST_DIRECTORY"/lib-httpd.sh
start_httpd
# Converts bytes into their hexadecimal representation. For example,
# "printf 'ab\r\n' | hex_unpack" results in '61620d0a'.
hex_unpack () {
perl -e '$/ = undef; $input = <>; print unpack("H2" x length($input), $input)'
}
# Inserts $1 at the start of the string and every 2 characters thereafter.
intersperse () {
sed 's/\(..\)/'$1'\1/g'
}
# Create a one-time-sed command to replace the existing packfile with $1.
replace_packfile () {
# The protocol requires that the packfile be sent in sideband 1, hence
# the extra \x01 byte at the beginning.
printf "1,/packfile/!c %04x\\\\x01%s0000" \
"$(($(wc -c <$1) + 5))" \
"$(hex_unpack <$1 | intersperse '\\x')" \
>"$HTTPD_ROOT_PATH/one-time-sed"
}
test_expect_success 'upon cloning, check that all refs point to objects' '
SERVER="$HTTPD_DOCUMENT_ROOT_PATH/server" &&
rm -rf "$SERVER" repo &&
test_create_repo "$SERVER" &&
test_commit -C "$SERVER" foo &&
test_config -C "$SERVER" uploadpack.allowfilter 1 &&
test_config -C "$SERVER" uploadpack.allowanysha1inwant 1 &&
# Create a tag pointing to a blob.
BLOB=$(echo blob-contents | git -C "$SERVER" hash-object --stdin -w) &&
git -C "$SERVER" tag myblob "$BLOB" &&
# Craft a packfile not including that blob.
git -C "$SERVER" rev-parse HEAD |
git -C "$SERVER" pack-objects --stdout >incomplete.pack &&
# Replace the existing packfile with the crafted one. The protocol
# requires that the packfile be sent in sideband 1, hence the extra
# \x01 byte at the beginning.
replace_packfile incomplete.pack &&
# Use protocol v2 because the sed command looks for the "packfile"
# section header.
test_config -C "$SERVER" protocol.version 2 &&
test_must_fail git -c protocol.version=2 clone \
--filter=blob:none $HTTPD_URL/one_time_sed/server repo 2>err &&
test_i18ngrep "did not send all necessary objects" err &&
# Ensure that the one-time-sed script was used.
! test -e "$HTTPD_ROOT_PATH/one-time-sed"
'
test_expect_success 'when partial cloning, tolerate server not sending target of tag' '
SERVER="$HTTPD_DOCUMENT_ROOT_PATH/server" &&
rm -rf "$SERVER" repo &&
test_create_repo "$SERVER" &&
test_commit -C "$SERVER" foo &&
test_config -C "$SERVER" uploadpack.allowfilter 1 &&
test_config -C "$SERVER" uploadpack.allowanysha1inwant 1 &&
# Create an annotated tag pointing to a blob.
BLOB=$(echo blob-contents | git -C "$SERVER" hash-object --stdin -w) &&
git -C "$SERVER" tag -m message -a myblob "$BLOB" &&
# Craft a packfile including the tag, but not the blob it points to.
# Also, omit objects referenced from HEAD in order to force a second
# fetch (to fetch missing objects) upon the automatic checkout that
# happens after a clone.
printf "%s\n%s\n--not\n%s\n%s\n" \
$(git -C "$SERVER" rev-parse HEAD) \
$(git -C "$SERVER" rev-parse myblob) \
$(git -C "$SERVER" rev-parse HEAD^{tree}) \
$(git -C "$SERVER" rev-parse myblob^{blob}) |
git -C "$SERVER" pack-objects --thin --stdout >incomplete.pack &&
# Replace the existing packfile with the crafted one. The protocol
# requires that the packfile be sent in sideband 1, hence the extra
# \x01 byte at the beginning.
replace_packfile incomplete.pack &&
# Use protocol v2 because the sed command looks for the "packfile"
# section header.
test_config -C "$SERVER" protocol.version 2 &&
# Exercise to make sure it works.
git -c protocol.version=2 clone \
--filter=blob:none $HTTPD_URL/one_time_sed/server repo 2> err &&
! grep "missing object referenced by" err &&
# Ensure that the one-time-sed script was used.
! test -e "$HTTPD_ROOT_PATH/one-time-sed"
'
test_expect_success 'tolerate server sending REF_DELTA against missing promisor objects' '
SERVER="$HTTPD_DOCUMENT_ROOT_PATH/server" &&
rm -rf "$SERVER" repo &&
test_create_repo "$SERVER" &&
test_config -C "$SERVER" uploadpack.allowfilter 1 &&
test_config -C "$SERVER" uploadpack.allowanysha1inwant 1 &&
# Create a commit with 2 blobs to be used as delta bases.
for i in $(test_seq 10)
do
echo "this is a line" >>"$SERVER/foo.txt" &&
echo "this is another line" >>"$SERVER/have.txt"
done &&
git -C "$SERVER" add foo.txt have.txt &&
git -C "$SERVER" commit -m bar &&
git -C "$SERVER" rev-parse HEAD:foo.txt >deltabase_missing &&
git -C "$SERVER" rev-parse HEAD:have.txt >deltabase_have &&
# Clone. The client has deltabase_have but not deltabase_missing.
git -c protocol.version=2 clone --no-checkout \
--filter=blob:none $HTTPD_URL/one_time_sed/server repo &&
git -C repo hash-object -w -- "$SERVER/have.txt" &&
# Sanity check to ensure that the client does not have
# deltabase_missing.
git -C repo rev-list --objects --ignore-missing \
-- $(cat deltabase_missing) >objlist &&
test_line_count = 0 objlist &&
# Another commit. This commit will be fetched by the client.
echo "abcdefghijklmnopqrstuvwxyz" >>"$SERVER/foo.txt" &&
echo "abcdefghijklmnopqrstuvwxyz" >>"$SERVER/have.txt" &&
git -C "$SERVER" add foo.txt have.txt &&
git -C "$SERVER" commit -m baz &&
# Pack a thin pack containing, among other things, HEAD:foo.txt
# delta-ed against HEAD^:foo.txt and HEAD:have.txt delta-ed against
# HEAD^:have.txt.
printf "%s\n--not\n%s\n" \
$(git -C "$SERVER" rev-parse HEAD) \
$(git -C "$SERVER" rev-parse HEAD^) |
git -C "$SERVER" pack-objects --thin --stdout >thin.pack &&
# Ensure that the pack contains one delta against HEAD^:foo.txt. Since
# the delta contains at least 26 novel characters, the size cannot be
# contained in 4 bits, so the object header will take up 2 bytes. The
# most significant nybble of the first byte is 0b1111 (0b1 to indicate
# that the header continues, and 0b111 to indicate REF_DELTA), followed
# by any 3 nybbles, then the OID of the delta base.
printf "f.,..%s" $(intersperse "," <deltabase_missing) >want &&
hex_unpack <thin.pack | intersperse "," >have &&
grep $(cat want) have &&
# Ensure that the pack contains one delta against HEAD^:have.txt,
# similar to the above.
printf "f.,..%s" $(intersperse "," <deltabase_have) >want &&
hex_unpack <thin.pack | intersperse "," >have &&
grep $(cat want) have &&
replace_packfile thin.pack &&
# Use protocol v2 because the sed command looks for the "packfile"
# section header.
test_config -C "$SERVER" protocol.version 2 &&
# Fetch the thin pack and ensure that index-pack is able to handle the
# REF_DELTA object with a missing promisor delta base.
GIT_TRACE_PACKET="$(pwd)/trace" git -C repo -c protocol.version=2 fetch &&
# Ensure that the missing delta base was directly fetched, but not the
# one that the client has.
grep "want $(cat deltabase_missing)" trace &&
! grep "want $(cat deltabase_have)" trace &&
# Ensure that the one-time-sed script was used.
! test -e "$HTTPD_ROOT_PATH/one-time-sed"
'
test_done
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