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#!/bin/sh
# use flock(1) from util-linux to avoid seek contention on slow HDDs
# when using multiple `pull_threads' with grok-pull:
# [ "${FLOCKER}" != "$0" ] && exec env FLOCKER="$0" flock "$0" "$0" "$@" || :
# post_update_hook for repos.conf as used by grok-pull, takes a full
# git repo path as it's first and only arg.
full_git_dir="$1"
url_base=http://127.0.0.1:8080/
# same default as other public-inbox-* tools
PI_CONFIG=${PI_CONFIG-~/.public-inbox/config}
# FreeBSD expr(1) only supports BRE, so no '+'
EPOCH2MAIN='\(..*\)/git/[0-9][0-9]*\.git'
# see if it's v2 or v1 based on tree contents, since somebody could
# theoretically name a v1 inbox with a path that looks like a v2 epoch
if git --git-dir="$full_git_dir" ls-tree --name-only HEAD | \
grep -E '^(m|d)$' >/dev/null
then
inbox_fmt=2
inbox_dir=$(expr "$full_git_dir" : "$EPOCH2MAIN")
inbox_name=$(basename "$inbox_dir")
msgmap="$inbox_dir"/msgmap.sqlite3
inbox_lock="$inbox_dir"/inbox.lock
else
inbox_fmt=1
inbox_dir="$full_git_dir"
inbox_name=$(basename "$inbox_dir" .git)
msgmap="$inbox_dir"/public-inbox/msgmap.sqlite3
inbox_lock="$inbox_dir"/ssoma.lock
fi
# run public-inbox-init iff unconfigured
cfg_dir=$(git config -f "$PI_CONFIG" publicinbox."$inbox_name".inboxdir)
# check legacy name for "inboxdir"
case $cfg_dir in
'') cfg_dir=$(git config -f "$PI_CONFIG" publicinbox."$inbox_name".mainrepo) ;;
esac
case $cfg_dir in
'')
remote_git_url=$(git --git-dir="$full_git_dir" config remote.origin.url)
case $remote_git_url in
'')
echo >&2 "remote.origin.url unset in $full_git_dir/config"
exit 1
;;
esac
case $inbox_fmt in
1)
remote_inbox_url="$remote_git_url"
;;
2)
remote_inbox_url=$(expr "$remote_git_url" : "$EPOCH2MAIN")
;;
esac
config_url="$remote_inbox_url"/_/text/config/raw
remote_config="$inbox_dir"/remote.config.$$
infourls=
trap 'rm -f "$remote_config"' EXIT
if curl --compressed -sSf -v "$config_url" >"$remote_config"
then
# n.b. inbox_name on the remote may not match our local
# inbox_name, so we match all addresses in the remote config
addresses=$(git config -f "$remote_config" -l | \
sed -ne 's/^publicinbox\..\+\.address=//p')
case $addresses in
'')
echo >&2 'unable to extract address(es) from ' \
"$remote_config"
exit 1
;;
esac
newsgroups=$(git config -f "$remote_config" -l | \
sed -ne 's/^publicinbox\..\+\.newsgroup=//p')
infourls=$(git config -f "$remote_config" -l | \
sed -ne 's/^publicinbox\..\+.infourl=//p')
else
newsgroups=
addresses="$inbox_name@$$.$(hostname).example.com"
echo >&2 "E: curl $config_url failed"
echo >&2 "E: using bogus <$addresses> for $inbox_dir"
fi
local_url="$url_base$inbox_name"
public-inbox-init -V$inbox_fmt "$inbox_name" \
"$inbox_dir" "$local_url" $addresses
if test $? -ne 0
then
echo >&2 "E: public-inbox-init failed on $inbox_dir"
exit 1
fi
for ng in $newsgroups
do
git config -f "$PI_CONFIG" \
"publicinbox.$inbox_name.newsgroup" "$ng"
# only one newsgroup per inbox
break
done
for url in $infourls
do
git config -f "$PI_CONFIG" \
"publicinbox.$inbox_name.infourl" "$url"
done
curl -sSfv "$remote_inbox_url"/description >"$inbox_dir"/description
echo "I: $inbox_name at $inbox_dir ($addresses) $local_url"
;;
esac
# only run public-inbox-index if an index exists and has messages,
# since epochs may be cloned out-of-order by grokmirror and we also
# don't know what indexlevel a user wants
if test -f "$msgmap"
then
# We need to use flock(1) (from util-linux) to avoid timeouts
# and SQLite locking problems.
# FreeBSD has a similar lockf(1) utility, but it unlinks by
# default so we use `-k' to keep the lock on the FS.
FLOCK=flock
case $(uname -s) in
FreeBSD) FLOCK='lockf -k' ;;
# ... other OSes here
esac
n=$(echo 'SELECT COUNT(*) FROM msgmap' | \
$FLOCK $inbox_lock sqlite3 -readonly "$msgmap")
case $n in
0|'')
: v2 inboxes may be init-ed with an empty msgmap
;;
*)
# if on HDD and limited RAM, add `--sequential-shard'
# and possibly a large `--batch-size' if you have much
# memory in public-inbox 1.6.0+
$EATMYDATA public-inbox-index -v "$inbox_dir"
;;
esac
fi
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