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scripts: refactored check-for-changes.sh (#2498)
* refactored `check-for-changes.sh` I refactored `check-for-changes.sh` and used the new log. `_notify` can therefore be deleted as it is used no more. I opted to source `/etc/dms-settings` as a whole to future-proof the script. When the DNS adjustments PRs (that do not exist by now but will exit in the future) are done, we can then remove `_obtain_hostname_and_domainname` because we're already writing the variables to `/etc/dms-settings`. I left instructions in the script in the form of TODO comments. Because we now log the date for all messages of the changedetector, we need to `tail` a bit more log than before.
This commit is contained in:
Georg Lauterbach
GitHub
parent
d651f3bd93
commit
35fb744ffb
4 changed files with 33 additions and 61 deletions
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@ -5,48 +5,46 @@
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# shellcheck source=./helpers/index.sh
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source /usr/local/bin/helpers/index.sh
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# This script requires some environment variables to be properly set. This
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# includes POSTMASTER_ADDRESS (for alias (re-)generation), HOSTNAME and
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# DOMAINNAME (in ssl.sh).
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# shellcheck source=/dev/null
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source /etc/dms-settings
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function _log_date
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{
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date +"%Y-%m-%d %H:%M:%S"
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}
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_log_with_date 'debug' 'Starting changedetector'
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LOG_DATE=$(_log_date)
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_notify 'task' "${LOG_DATE} Start check-for-changes script."
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# TODO in the future, when we do not use HOSTNAME but DMS_HOSTNAME everywhere,
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# TODO we can delete this call as we needn't calculate the names twice
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# ATTENTION: Do not remove!
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# This script requies HOSTNAME and DOMAINNAME
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# to be properly set.
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_obtain_hostname_and_domainname
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# ? --------------------------------------------- Checks
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cd /tmp/docker-mailserver || exit 1
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if ! cd /tmp/docker-mailserver &>/dev/null
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then
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_exit_with_error "Could not change into '/tmp/docker-mailserver/' directory"
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fi
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# check postfix-accounts.cf exist else break
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if [[ ! -f postfix-accounts.cf ]]
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then
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_notify 'inf' "${LOG_DATE} postfix-accounts.cf is missing! This should not run! Exit!"
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exit 0
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_exit_with_error "'/tmp/docker-mailserver/postfix-accounts.cf' is missing"
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fi
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# verify checksum file exists; must be prepared by start-mailserver.sh
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if [[ ! -f ${CHKSUM_FILE} ]]
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then
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_notify 'err' "${LOG_DATE} ${CHKSUM_FILE} is missing! Start script failed? Exit!"
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exit 0
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_exit_with_error "'/tmp/docker-mailserver/${CHKSUM_FILE}' is missing"
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fi
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# ? --------------------------------------------- Actual script begins
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# determine postmaster address, duplicated from start-mailserver.sh
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# this script previously didn't work when POSTMASTER_ADDRESS was empty
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_obtain_hostname_and_domainname
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PM_ADDRESS="${POSTMASTER_ADDRESS:=postmaster@${DOMAINNAME}}"
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_notify 'inf' "${LOG_DATE} Using postmaster address ${PM_ADDRESS}"
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REGEX_NEVER_MATCH="(?\!)"
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_log_with_date 'trace' "Using postmaster address '${POSTMASTER_ADDRESS}'"
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# Change detection delayed during startup to avoid conflicting writes
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sleep 10
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_notify 'inf' "$(_log_date) check-for-changes is ready"
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_log_with_date 'debug' "Chagedetector is ready"
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while true
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do
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@ -60,7 +58,7 @@ do
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# 2 – inaccessible or missing argument
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if [[ ${?} -eq 1 ]]
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then
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_notify 'inf' "$(_log_date) Change detected"
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_log_with_date 'info' 'Change detected'
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_create_lock # Shared config safety lock
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CHANGED=$(grep -Fxvf "${CHKSUM_FILE}" "${CHKSUM_FILE}.new" | sed 's/^[^ ]\+ //')
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@ -76,7 +74,7 @@ do
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|| [[ ${CHANGED} =~ ${SSL_ALT_CERT_PATH:-${REGEX_NEVER_MATCH}} ]] \
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|| [[ ${CHANGED} =~ ${SSL_ALT_KEY_PATH:-${REGEX_NEVER_MATCH}} ]]
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then
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_notify 'inf' "Manual certificates have changed, extracting certs.."
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_log_with_date 'debug' 'Manual certificates have changed - extracting certificates'
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# we need to run the SSL setup again, because the
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# certificates DMS is working with are copies of
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# the (now changed) files
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@ -87,7 +85,7 @@ do
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# extracted for `docker-mailserver` services to adjust to.
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elif [[ ${CHANGED} =~ /etc/letsencrypt/acme.json ]]
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then
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_notify 'inf' "'/etc/letsencrypt/acme.json' has changed, extracting certs.."
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_log_with_date 'debug' "'/etc/letsencrypt/acme.json' has changed - extracting certificates"
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# This breaks early as we only need the first successful extraction.
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# For more details see the `SSL_TYPE=letsencrypt` case handling in `setup-stack.sh`.
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@ -97,7 +95,7 @@ do
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FQDN_LIST=("${SSL_DOMAIN}" "${HOSTNAME}" "${DOMAINNAME}")
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for CERT_DOMAIN in "${FQDN_LIST[@]}"
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do
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_notify 'inf' "Attempting to extract for '${CERT_DOMAIN}'"
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_log_with_date 'trace' "Attempting to extract for '${CERT_DOMAIN}'"
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if _extract_certs_from_acme "${CERT_DOMAIN}"
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then
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@ -135,7 +133,7 @@ do
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chown -R 5000:5000 /var/mail
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fi
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_notify 'inf' "Restarting services due to detected changes.."
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_log_with_date 'debug' 'Restarting services due to detected changes'
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supervisorctl restart postfix
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@ -143,7 +141,7 @@ do
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[[ ${SMTP_ONLY} -ne 1 ]] && supervisorctl restart dovecot
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_remove_lock
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_notify 'inf' "$(_log_date) Completed handling of detected change"
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_log_with_date 'debug' 'Completed handling of detected change'
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fi
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# mark changes as applied
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@ -92,30 +92,3 @@ function _log
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}
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function _log_with_date { _log "${1}" "$(date '+%Y-%m-%d %H:%M:%S') ${2}" ; }
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# Still used by `check-for-changes.sh` for legacy / test purposes. Adjusting
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# `check-for-changes.sh` must be done with great care and requires some effort.
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# As a consequence, this function is kept to keep some of the original log for
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# `check-for-changes.sh` for tests to pass.
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function _notify
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{
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{ [[ -z ${1:-} ]] || [[ -z ${2:-} ]] ; } && return 0
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local RESET LGREEN LYELLOW LRED RED LBLUE LGREY LMAGENTA
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RESET='\e[0m' ; LGREEN='\e[92m' ; LYELLOW='\e[93m'
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LRED='\e[31m' ; RED='\e[91m' ; LBLUE='\e[34m'
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LGREY='\e[37m' ; LMAGENTA='\e[95m'
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case "${1}" in
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'tasklog' ) echo "-e${3:-}" "[ ${LGREEN}TASKLOG${RESET} ] ${2}" ;;
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'warn' ) echo "-e${3:-}" "[ ${LYELLOW}WARNING${RESET} ] ${2}" ;;
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'err' ) echo "-e${3:-}" "[ ${LRED}ERROR${RESET} ] ${2}" ;;
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'fatal' ) echo "-e${3:-}" "[ ${RED}FATAL${RESET} ] ${2}" ;;
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'inf' ) [[ ${DMS_DEBUG} -eq 1 ]] && echo "-e${3:-}" "[[ ${LBLUE}INF${RESET} ]] ${2}" ;;
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'task' ) [[ ${DMS_DEBUG} -eq 1 ]] && echo "-e${3:-}" "[[ ${LGREY}TASKS${RESET} ]] ${2}" ;;
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* ) echo "-e${3:-}" "[ ${LMAGENTA}UNKNOWN${RESET} ] ${2}" ;;
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esac
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return 0
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}
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