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https://git.notmuchmail.org/git/notmuch
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CLI/git: add safety checks for checkout and commit
Commits or checkouts that modify a large fraction of the messages in the database should be relatively rare (and in some automated process, probably non-existent). For initial setup, where such operations are expected, the user can pass --force.
This commit is contained in:
David Bremner
parent
99e85823c8
commit
7d1e5a5348
4 changed files with 130 additions and 9 deletions
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@ -111,6 +111,13 @@ paths are presumed relative to `$HOME` for items in section
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Default location for git repository for :any:`notmuch-git`.
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.. nmconfig:: git.safe_fraction
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Some :any:`notmuch-git` operations check that the fraction of
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messages changed (in the database or in git, as appropriate) is not
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too large. This item controls what fraction of total messages is
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considered "not too large".
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.. nmconfig:: git.tag_prefix
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Default tag prefix (filter) for :any:`notmuch-git`.
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@ -73,13 +73,18 @@ Dump a tar archive of a committed tag set using 'git archive'. See
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:manpage:`git-archive(1)`. Arguments to `git-archive` are reordered
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so that *tree-ish* comes last.
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.. option:: checkout
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.. option:: checkout [-f|--force]
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Update the notmuch database from Git.
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This is mainly useful to discard your changes in notmuch relative
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to Git.
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.. describe:: [-f|--force]
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Override checks that prevent modifying tags for large fractions of
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messages in the database. See also :nmconfig:`git.safe_fraction`.
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.. option:: clone <repository>
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Create a local `notmuch git` repository from a remote source.
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@ -94,7 +99,7 @@ upstreams.
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section of :manpage:`git-clone(1)` for more information on
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specifying repositories.
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.. option:: commit [message]
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.. option:: commit [-f|--force] [message]
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Commit prefix-matching tags from the notmuch database to Git.
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@ -102,6 +107,11 @@ Commit prefix-matching tags from the notmuch database to Git.
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Optional text for the commit message.
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.. describe:: -f|--force
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Override checks that prevent modifying tags for large fractions of
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messages in the database. See also :nmconfig:`git.safe_fraction`.
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.. option:: fetch [remote]
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Fetch changes from the remote repository.
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@ -239,6 +239,16 @@ def _tag_query(prefix=None):
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prefix = TAG_PREFIX
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return '(tag (starts-with "{:s}"))'.format(prefix.replace('"','\\\"'))
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def count_messages(prefix=None):
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"count messages with a given prefix."
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(status, stdout, stderr) = _spawn(
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args=['notmuch', 'count', '--query=sexp', _tag_query(prefix)],
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stdout=_subprocess.PIPE, wait=True)
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if status != 0:
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_LOG.error("failed to run notmuch config")
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sys.exit(1)
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return int(stdout.rstrip())
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def get_tags(prefix=None):
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"Get a list of tags with a given prefix."
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(status, stdout, stderr) = _spawn(
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@ -357,7 +367,26 @@ class CachedIndex:
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_git(args=['read-tree', self.current_treeish], wait=True)
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def commit(treeish='HEAD', message=None):
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def check_safe_fraction(status):
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safe = 0.1
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conf = _notmuch_config_get ('git.safe_fraction')
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if conf and conf != '':
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safe=float(conf)
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total = count_messages (TAG_PREFIX)
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if total == 0:
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_LOG.error('No existing tags with given prefix, stopping.'.format(safe))
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_LOG.error('Use --force to override.')
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exit(1)
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change = len(status['added'])+len(status['deleted'])
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fraction = change/total
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_LOG.debug('total messages {:d}, change: {:d}, fraction: {:f}'.format(total,change,fraction))
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if fraction > safe:
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_LOG.error('safe fraction {:f} exceeded, stopping.'.format(safe))
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_LOG.error('Use --force to override or reconfigure git.safe_fraction.')
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exit(1)
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def commit(treeish='HEAD', message=None, force=False):
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"""
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Commit prefix-matching tags from the notmuch database to Git.
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"""
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@ -368,6 +397,9 @@ def commit(treeish='HEAD', message=None):
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_LOG.warning('Nothing to commit')
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return
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if not force:
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check_safe_fraction (status)
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with CachedIndex(NOTMUCH_GIT_DIR, treeish) as index:
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try:
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_update_index(status=status)
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@ -445,7 +477,7 @@ def init(remote=None):
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wait=True)
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def checkout():
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def checkout(force=None):
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"""
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Update the notmuch database from Git.
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@ -453,6 +485,10 @@ def checkout():
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to Git.
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"""
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status = get_status()
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if not force:
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check_safe_fraction(status)
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with _spawn(
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args=['notmuch', 'tag', '--batch'], stdin=_subprocess.PIPE) as p:
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for id, tags in status['added'].items():
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@ -943,6 +979,10 @@ if __name__ == '__main__':
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help=(
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"Argument passed through to 'git archive'. Set anything "
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'before <tree-ish>, see git-archive(1) for details.'))
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elif command == 'checkout':
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subparser.add_argument(
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'-f', '--force', action='store_true',
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help='checkout a large fraction of tags.')
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elif command == 'clone':
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subparser.add_argument(
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'repository',
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@ -951,6 +991,9 @@ if __name__ == '__main__':
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'URLS section of git-clone(1) for more information on '
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'specifying repositories.'))
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elif command == 'commit':
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subparser.add_argument(
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'-f', '--force', action='store_true',
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help='commit a large fraction of tags.')
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subparser.add_argument(
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'message', metavar='MESSAGE', default='', nargs='?',
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help='Text for the commit message.')
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@ -7,6 +7,9 @@ if [ $NOTMUCH_HAVE_SFSEXP -ne 1 ]; then
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test_done
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fi
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# be very careful using backup_database / restore_database in this
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# file, as they fool the cache invalidation checks in notmuch-git.
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add_email_corpus
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git config --global user.email notmuch@example.org
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@ -25,12 +28,54 @@ test_expect_equal "$output" "true"
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test_begin_subtest "clone"
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test_expect_success "notmuch git -p '' -C tags.git clone remote.git"
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test_begin_subtest "initial commit needs force"
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test_expect_code 1 "notmuch git -C tags.git commit"
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test_begin_subtest "committing new prefix requires force"
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notmuch git -C force-prefix.git init
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notmuch tag +new-prefix::foo id:20091117190054.GU3165@dottiness.seas.harvard.edu
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test_expect_code 1 "notmuch git -l debug -p 'new-prefix::' -C force-prefix.git commit"
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notmuch tag -new-prefix::foo id:20091117190054.GU3165@dottiness.seas.harvard.edu
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test_begin_subtest "committing new prefix works with force"
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notmuch tag +new-prefix::foo id:20091117190054.GU3165@dottiness.seas.harvard.edu
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notmuch git -l debug -p 'new-prefix::' -C force-prefix.git commit --force
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git -C force-prefix.git ls-tree -r --name-only HEAD | xargs dirname | sort -u | sed s,tags/,id:, > OUTPUT
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notmuch tag -new-prefix::foo id:20091117190054.GU3165@dottiness.seas.harvard.edu
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cat <<EOF>EXPECTED
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id:20091117190054.GU3165@dottiness.seas.harvard.edu
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EOF
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test_expect_equal_file_nonempty EXPECTED OUTPUT
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test_begin_subtest "checkout new prefix requires force"
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test_expect_code 1 "notmuch git -l debug -p 'new-prefix::' -C force-prefix.git checkout"
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test_begin_subtest "checkout new prefix works with force"
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notmuch dump > BEFORE
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notmuch git -l debug -p 'new-prefix::' -C force-prefix.git checkout --force
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notmuch dump --include=tags id:20091117190054.GU3165@dottiness.seas.harvard.edu | grep -v '^#' > OUTPUT
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notmuch restore < BEFORE
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cat <<EOF > EXPECTED
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+inbox +new-prefix%3a%3afoo +signed +unread -- id:20091117190054.GU3165@dottiness.seas.harvard.edu
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EOF
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test_expect_equal_file_nonempty EXPECTED OUTPUT
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test_begin_subtest "commit"
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notmuch git -C tags.git commit
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notmuch git -C tags.git commit --force
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git -C tags.git ls-tree -r --name-only HEAD | xargs dirname | sort -u | sed s,tags/,id:, > OUTPUT
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notmuch search --output=messages '*' | sort > EXPECTED
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test_expect_equal_file_nonempty EXPECTED OUTPUT
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test_begin_subtest "commit --force succeeds"
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notmuch git -C force.git init
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test_expect_success "notmuch git -C force.git commit --force"
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test_begin_subtest "changing git.safe_fraction succeeds"
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notmuch config set git.safe_fraction 1
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notmuch git -C force2.git init
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test_expect_success "notmuch git -C force2.git commit"
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notmuch config set git.safe_fraction
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test_begin_subtest "commit, with quoted tag"
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notmuch git -C clone2.git clone tags.git
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git -C clone2.git ls-tree -r --name-only HEAD | grep /inbox > BEFORE
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@ -64,12 +109,12 @@ test_expect_equal_file_nonempty EXPECTED OUTPUT
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test_begin_subtest "commit (change prefix)"
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notmuch tag +test::one id:20091117190054.GU3165@dottiness.seas.harvard.edu
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notmuch git -C tags.git -p 'test::' commit
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notmuch git -C tags.git -p 'test::' commit --force
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git -C tags.git ls-tree -r --name-only HEAD |
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grep 20091117190054 | sort > OUTPUT
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echo "--------------------------------------------------" >> OUTPUT
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notmuch tag -test::one id:20091117190054.GU3165@dottiness.seas.harvard.edu
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notmuch git -C tags.git commit
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notmuch git -C tags.git commit --force
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git -C tags.git ls-tree -r --name-only HEAD |
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grep 20091117190054 | sort >> OUTPUT
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cat <<EOF > EXPECTED
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@ -81,10 +126,26 @@ tags/20091117190054.GU3165@dottiness.seas.harvard.edu/unread
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EOF
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test_expect_equal_file_nonempty EXPECTED OUTPUT
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backup_database
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test_begin_subtest "large checkout needs --force"
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notmuch tag -inbox '*'
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test_expect_code 1 "notmuch git -C tags.git checkout"
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restore_database
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test_begin_subtest "checkout (git.safe_fraction)"
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notmuch git -C force3.git clone tags.git
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notmuch dump > BEFORE
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notmuch tag -inbox '*'
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notmuch config set git.safe_fraction 1
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notmuch git -C force3.git checkout
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notmuch config set git.safe_fraction
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notmuch dump > AFTER
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test_expect_equal_file_nonempty BEFORE AFTER
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test_begin_subtest "checkout"
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notmuch dump > BEFORE
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notmuch tag -inbox '*'
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notmuch git -C tags.git checkout
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notmuch git -C tags.git checkout --force
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notmuch dump > AFTER
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test_expect_equal_file_nonempty BEFORE AFTER
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@ -122,7 +183,7 @@ test_expect_equal_file EXPECTED OUTPUT
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test_begin_subtest "fetch"
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notmuch tag +test2 id:20091117190054.GU3165@dottiness.seas.harvard.edu
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notmuch git -C remote.git commit
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notmuch git -C remote.git commit --force
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notmuch tag -test2 id:20091117190054.GU3165@dottiness.seas.harvard.edu
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notmuch git -C tags.git fetch
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notmuch git -C tags.git status > OUTPUT
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