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`uploadpack.packObjectsHook` is the only 'protected configuration only' variable today, but we've noted that `safe.directory` and the upcoming `safe.bareRepository` should also be 'protected configuration only'. So, for consistency, we'd like to have a single implementation for protected configuration. The primary constraints are: 1. Reading from protected configuration should be fast. Nearly all "git" commands inside a bare repository will read both `safe.directory` and `safe.bareRepository`, so we cannot afford to be slow. 2. Protected configuration must be readable when the gitdir is not known. `safe.directory` and `safe.bareRepository` both affect repository discovery and the gitdir is not known at that point [1]. The chosen implementation in this commit is to read protected configuration and cache the values in a global configset. This is similar to the caching behavior we get with the_repository->config. Introduce git_protected_config(), which reads protected configuration and caches them in the global configset protected_config. Then, refactor `uploadpack.packObjectsHook` to use git_protected_config(). The protected configuration functions are named similarly to their non-protected counterparts, e.g. git_protected_config_check_init() vs git_config_check_init(). In light of constraint 1, this implementation can still be improved. git_protected_config() iterates through every variable in protected_config, which is wasteful, but it makes the conversion simple because it matches existing patterns. We will likely implement constant time lookup functions for protected configuration in a future series (such functions already exist for non-protected configuration, i.e. repo_config_get_*()). An alternative that avoids introducing another configset is to continue to read all config using git_config(), but only accept values that have the correct config scope [2]. This technically fulfills constraint 2, because git_config() simply ignores the local and worktree config when the gitdir is not known. However, this would read incomplete config into the_repository->config, which would need to be reset when the gitdir is known and git_config() needs to read the local and worktree config. Resetting the_repository->config might be reasonable while we only have these 'protected configuration only' variables, but it's not clear whether this extends well to future variables. [1] In this case, we do have a candidate gitdir though, so with a little refactoring, it might be possible to provide a gitdir. [2] This is how `uploadpack.packObjectsHook` was implemented prior to this commit. Signed-off-by: Glen Choo <chooglen@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
78 lines
2.2 KiB
Bash
Executable file
78 lines
2.2 KiB
Bash
Executable file
#!/bin/sh
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test_description='test custom script in place of pack-objects'
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. ./test-lib.sh
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test_expect_success 'create some history to fetch' '
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test_commit one &&
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test_commit two
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'
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test_expect_success 'create debugging hook script' '
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write_script .git/hook <<-\EOF
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echo >&2 "hook running"
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echo "$*" >hook.args
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cat >hook.stdin
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"$@" <hook.stdin >hook.stdout
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cat hook.stdout
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EOF
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'
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clear_hook_results () {
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rm -rf .git/hook.* dst.git
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}
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test_expect_success 'hook runs via global config' '
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clear_hook_results &&
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test_config_global uploadpack.packObjectsHook ./hook &&
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git clone --no-local . dst.git 2>stderr &&
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grep "hook running" stderr
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'
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test_expect_success 'hook outputs are sane' '
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# check that we recorded a usable pack
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git index-pack --stdin <.git/hook.stdout &&
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# check that we recorded args and stdin. We do not check
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# the full argument list or the exact pack contents, as it would make
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# the test brittle. So just sanity check that we could replay
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# the packing procedure.
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grep "^git" .git/hook.args &&
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$(cat .git/hook.args) <.git/hook.stdin >replay
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'
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test_expect_success 'hook runs from -c config' '
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clear_hook_results &&
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git clone --no-local \
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-u "git -c uploadpack.packObjectsHook=./hook upload-pack" \
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. dst.git 2>stderr &&
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grep "hook running" stderr
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'
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test_expect_success 'hook does not run from repo config' '
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clear_hook_results &&
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test_config uploadpack.packObjectsHook "./hook" &&
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git clone --no-local . dst.git 2>stderr &&
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! grep "hook running" stderr &&
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test_path_is_missing .git/hook.args &&
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test_path_is_missing .git/hook.stdin &&
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test_path_is_missing .git/hook.stdout &&
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# check that global config is used instead
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test_config_global uploadpack.packObjectsHook ./hook &&
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git clone --no-local . dst2.git 2>stderr &&
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grep "hook running" stderr
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'
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test_expect_success 'hook works with partial clone' '
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clear_hook_results &&
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test_config_global uploadpack.packObjectsHook ./hook &&
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test_config_global uploadpack.allowFilter true &&
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git clone --bare --no-local --filter=blob:none . dst.git &&
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git -C dst.git rev-list --objects --missing=allow-any --no-object-names --all >objects &&
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git -C dst.git cat-file --batch-check="%(objecttype)" <objects >types &&
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! grep blob types
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'
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test_done
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