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https://github.com/docker-mailserver/docker-mailserver.git
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7721a48b9b
* `update-check.sh` now uses the new log * refactored `setup-stack.sh` The changes are: 1. Replaced `""` wiht `''` where possible (reasoning: Bash is very implicit and I'd like to use `''` where possible to indicate no variables are expanded here) 2. `> /file` -> `>/file` according to our style guide 3. Some log adjustments for messages where I deemed it appropriate 4. Then, an error message from a Dovecot setup was also prevented (by adding a check whether the directory is present before a `: >...` command would create a file in this directory). These are all small, miscellaneous changes that I wanted to combine into one commit and ultimately one PR because I see no point in opening a PR for every small change here. I hope this is fine. * added a small `sleep` to the `_shutdown` function This ensure the last log message is actually logged before Supervisor logs the message that it received a SIGTERM. This makes reading the log easier because now the causal relationship is shown (we are terminating Supervisor, and not someone else and we're just logging it). I forgot to replace `""` with `''` in `update-check.sh`, so I included it here because this is the last commit before PR review. * re-add exit on successful update (only) * re-added date information to update-check log messages * added `_log_with_date` function The new function will log a message with a proper timestamp. This is all handled in `log.sh`, we therefore not need to source other files too. This will be used in the future by `check-for-changes.sh` as well :) Co-authored-by: Casper <casperklein@users.noreply.github.com> Co-authored-by: Brennan Kinney <5098581+polarathene@users.noreply.github.com>
58 lines
1.7 KiB
Bash
Executable file
58 lines
1.7 KiB
Bash
Executable file
#! /bin/bash
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# shellcheck source=./helpers/log.sh
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source /usr/local/bin/helpers/log.sh
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VERSION=$(</VERSION)
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VERSION_URL='https://raw.githubusercontent.com/docker-mailserver/docker-mailserver/master/VERSION'
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CHANGELOG_URL='https://github.com/docker-mailserver/docker-mailserver/blob/master/CHANGELOG.md'
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# check for correct syntax
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# number + suffix. suffix must be 's' for seconds, 'm' for minutes, 'h' for hours or 'd' for days.
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if [[ ! ${UPDATE_CHECK_INTERVAL} =~ ^[0-9]+[smhd]{1}$ ]]
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then
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_log_with_date 'warn' "Invalid 'UPDATE_CHECK_INTERVAL' value '${UPDATE_CHECK_INTERVAL}'"
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_log_with_date 'warn' 'Falling back to daily update checks'
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UPDATE_CHECK_INTERVAL='1d'
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fi
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while true
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do
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# get remote version information
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LATEST=$(curl -Lsf "${VERSION_URL}")
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# did we get a valid response?
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if [[ ${LATEST} =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]
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then
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_log_with_date 'debug' 'Remote version information fetched'
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# compare versions
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if dpkg --compare-versions "${VERSION}" lt "${LATEST}"
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then
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# send mail notification to postmaster
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read -r -d '' MAIL << EOM
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Hello ${POSTMASTER_ADDRESS}!
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There is a docker-mailserver update available on your host: $(hostname -f)
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Current version: ${VERSION}
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Latest version: ${LATEST}
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Changelog: ${CHANGELOG_URL}
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EOM
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_log_with_date 'info' "Update available [ ${VERSION} --> ${LATEST} ]"
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# only notify once
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echo "${MAIL}" | mail -s "Mailserver update available! [ ${VERSION} --> ${LATEST} ]" "${POSTMASTER_ADDRESS}" && exit 0
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else
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_log_with_date 'info' 'No update available'
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fi
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else
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_log_with_date 'warn' 'Update check failed'
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fi
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# check again in 'UPDATE_CHECK_INTERVAL' time
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sleep "${UPDATE_CHECK_INTERVAL}"
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done
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