sneak
82adb13a0d
check / check (push) Waiting to run
Before waf starts, share/sww.run makes SWW_STATE_DIR if it is missing, gives it to sww:sww and sets its mode to 0700. A setting that is not an absolute path, or a SWW_STATE_DIR_FILE that cannot be read, still changes nothing. script/example-app now checks that a waf container whose SWW_STATE_DIR does not exist becomes healthy with the directory made for sww, mode 0700. Model: opus-5-5
70 lines
2.5 KiB
AMPL
Executable File
70 lines
2.5 KiB
AMPL
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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# runit's run script for sww, run again whenever sww
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# exits; the wait spaces out the restarts. SWW_COMMAND names the
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# command to run: rproxy when it is unset or empty, or waf. With any
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# other value the script starts nothing and stops with a message naming it.
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# exec, so that the signal `sv stop` sends reaches sww itself.
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main() {
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sleep 1
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local command="${SWW_COMMAND:-rproxy}"
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case "$command" in
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rproxy) ;;
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waf)
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make_state_dir_for_sww
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make_cache_dir_for_sww
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;;
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*)
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printf 'SWW_COMMAND: "%s" is not rproxy or waf\n' \
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"$command" >&2
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exit 1
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;;
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esac
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exec chpst -u sww:sww /usr/local/bin/sww "$command"
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}
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# make_state_dir_for_sww makes the state directory, SWW_STATE_DIR in
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# either form, when it is missing, gives it and every file in it to the
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# sww user, and sets its mode to 0700. So a volume mounted there needs no
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# change of owner; chown -R changes a symbolic link itself, never what it
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# points to. When the setting cannot be read or is not an absolute path,
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# nothing is changed, and waf starts and stops with a message naming the
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# setting. A step that fails, as on a volume mounted read-only, does not
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# end the script either: waf reports a directory it cannot write.
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make_state_dir_for_sww() {
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local dir
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if dir="$(setting SWW_STATE_DIR /var/lib/sww)" && [[ "$dir" == /* ]]; then
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{ mkdir -p -- "$dir" && chown -R sww:sww "$dir" &&
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chmod 0700 "$dir"; } || true
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fi
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}
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# make_cache_dir_for_sww makes the cache directory, SWW_CACHE_DIR in
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# either form, when it is missing, and gives it and every file in it to
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# the sww user. As for the state directory, a setting that cannot be read
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# or is not an absolute path changes nothing, and a failure does not end
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# the script.
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make_cache_dir_for_sww() {
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local dir
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if dir="$(setting SWW_CACHE_DIR /var/cache/sww)" && [[ "$dir" == /* ]]; then
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{ mkdir -p -- "$dir" && chown -R sww:sww "$dir"; } || true
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fi
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}
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# setting prints the setting named $1, $2 when it is unset, or what is in
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# the file the setting $1_FILE names, less every newline at its end. It
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# fails when both are set or the file cannot be read.
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setting() {
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local name="$1" file_name="$1_FILE"
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if [[ ! -v "$file_name" ]]; then
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printf '%s\n' "${!name-$2}"
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elif [[ ! -v "$name" ]]; then
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cat -- "${!file_name}" 2>/dev/null
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else
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return 1
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fi
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}
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main "$@"
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