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Initial working docker-templater+caddy version

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This commit is contained in:
Kevin Baensch 2022-12-17 10:30:41 +01:00
parent ed71970153
commit 3544247fc0
5 changed files with 55 additions and 29 deletions
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27
script/docker-templater.sh
View file

@ -6,7 +6,9 @@ DOCKER_DATA=$2;
NETWORK_NAME="${NETWORK_NAME:-proxy}"
# "NetworkSettings"
get_date() {
printf '%s' "$(date +'%Y.%m.%d_%H:%M:%S')"
}
# Import Template
# Required Variables:
@ -19,17 +21,18 @@ NETWORK_NAME="${NETWORK_NAME:-proxy}"
# Optional Functions:
# - label_hook :: modify/override label query results
# - template_hook :: hook to verify/modify template rsults (0 => OK; 1 => SKIP)
# - finally_hook :: gets executed after (and also only if) the final result has been written to disk
if [ -f "${TEMPLATE_SRC}" ]
then
source "${TEMPLATE_SRC}"
if [ -z "${TEMPLATE}" ]
then
echo "[ERR]: Template \"${TEMPLATE_SRC}\" does define a template string."
printf '%s | [ERR]: Template "%s" does define a template string.\n' "$(get_date)" "${TEMPLATE_SRC}"
exit 1
fi
else
echo "[ERR]: No such File \"${TEMPLATE_SRC}\".";
printf '%s | [ERR]: No such File "%s".\n' "$(get_date)" "${TEMPLATE_SRC}";
exit 1
fi
@ -48,6 +51,14 @@ else
RUN_TEMPLATE_HOOK=false
fi
if type finally_hook 2>/dev/null | grep -q "finally_hook is a function"
then
RUN_FINALLY_HOOK=true
else
RUN_FINALLY_HOOK=false
fi
if [ -z "${SEPARATOR+.}" ]
then
SEPARATOR='\n'
@ -104,15 +115,19 @@ do
done
done
RESULT="$(printf "%b" "${WRAP_START}" "${RESULT}" "${WRAP_END}")"
RESULT="$(printf "%s" "${WRAP_START}" "${RESULT}" "${WRAP_END}")"
if [ -z "${OUT}" ]
then
printf "%b" "${RESULT}";
else
if [ "$(cat "${OUT}")" != "${RESULT}" ]
if [ "$(cat "${OUT}")" != "$(printf '%b'"${RESULT}")" ]
then
printf "%s | Template Task: '%s' has been written to: '%s'\n" "$(date --iso-8601)" "${TEMPLATE_SRC}" "${OUT}"
printf "%s | Template Task: '%s' has been written to: '%s'\n" "$(get_date)" "${TEMPLATE_SRC}" "${OUT}"
printf "%b" "${RESULT}" > "${OUT}";
if ${RUN_FINALLY_HOOK}
then
finally_hook
fi
fi
fi

18
script/hostman.sh
View file

@ -6,22 +6,31 @@ NETWORK_NAME="${NETWORK_NAME:-proxy}"
TEMPLATER_PATH="${TEMPLATER_PATH:-/docker-templater.sh}"
TEMPLATE_FOLDER_PATH="${TEMPLATE_FOLDER_PATH:-/templates}"
get_date() {
printf '%s' "$(date +'%Y.%m.%d_%H:%M:%S')"
}
query_docker () {
curl --unix-socket $DOCKER_SOCK_PATH --silent -g http://v1.41/$1$2
}
update_templates() {
CONTAINER_LIST=$(query_docker "containers/json" "?filters={%22network%22:[%22${NETWORK_NAME}%22],%22status%22:[%22running%22]}")
if [ "${CONTAINER_LIST}" != "${OLD_CONTAINER_LIST}" ]
LABELS_NEW="$(echo "${CONTAINER_LIST}" | jq '.[].Labels | @base64' | sort)"
if [ "${LABELS_NEW}" != "${LABELS_OLD}" ]
then
if [ -n "${LABELS_OLD}" ]
then
printf '%s | Container label list change detected.\n' "$(get_date)"
fi
LABELS_OLD="${LABELS_NEW}"
for template in "${TEMPLATE_FOLDER_PATH}"/*
do
if ! "${TEMPLATER_PATH}" "${template}" "${CONTAINER_LIST}"
then
echo "Error Processing Template: ${template}"
printf '%s | Error Processing Template: %s\n' "$(get_date)" "${template}"
fi
done
OLD_CONTAINER_LIST="${CONTAINER_LIST}"
fi
}
@ -31,11 +40,14 @@ update_templates
# cannot filter because reailine no longer recognized lines otherwise (check how IFS changes)
query_docker "events" | while true
do
printf '%s | Listening for docker events\n' "$(get_date)"
read -r;
# wait for related events to finish
printf '%s | Waiting for event messages to settle.\n' "$(get_date)"
while [ $? -eq 0 ]
do
read -t 8 -r
done
printf '%s | Checking for changes in container label list.\n' "$(get_date)"
update_templates
done