This PR prepares for other PRs that use the newly introduced helper
functions. The `_log` function itself was adjusted a bit to be shorter
and more concise.
This PR does two small things:
1. The log level, in case it is unset, will now be "calculated" from
`/etc/dms-settings` and not always default to `info`. This way, we
can ensure that more often than not, the log level the user chose
when starting DMS is used everywhere.
2. I noticed that the way I obtained the log level could be used to
obtain any env variable's log level. I therefore added a function to
`utils.sh` in case we use it in the future.
* 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.
* `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>
* added new `_log` function
With `_log`, the `_notify` method wa rendered obsolete. `_notify` was
not completely removed due to test failures in `check-for-changes.sh`.
The new `_log` function properly uses log levels such as `trace`,
`debug`, `info`, `warn` and `error`. It provides a cleaner solution
and renders `DMS_DEBUG` obsolete too (as only `_notify` depends on it).
* converted all helper script to new `_log` function
* converted all startup stacks to new `log` function
* `start-mailserver.sh` now uses new `_log` function
* final test and misc small script adjustments
* updated documentation
