This commit improves the logging of Sidekiq errors when
`ENABLE_LOGSTASH_LOGGER` is set to 1. Prior to this change, we would
only log the message and the backtrace. After this change, useful
information like `job.class`, `job.opts`, `job.problem_db`,
`exception.class` and `exception.message` are included in the log line
as well.
This commit updates `DiscourseLogstashLogger#add_with_opts` to avoid
logging messages that matches regexp patterns configured in
`Logster.store.ignore`. Those error logs are mostly triggered by clients
and do not serve any useful purpose.
This commit updates `DiscourseLogstashlogger` to add the
`exception_class` and `exception_message` field to the log line when the
`progname` of the log message is `web-exception` which is Logster's
logging of exceptions during a web request.
The `exception_class` and `exception_message` fields allows consumers of
the logs to easily group logs together.
In our official Docker image, running git commands results in the
following error:
```
fatal: detected dubious ownership in repository at '/var/www/discourse'
To add an exception for this directory, call:
git config --global --add safe.directory /var/www/discourse
```
This commit rewrites `DiscourseLogstashLogger` to not be an instance
of `LogstashLogger`. The reason we don't want it to be an instance of
`LogstashLogger` is because we want the new logger to be chained to
Logster's logger which can then pass down useful information like the
request's env and error backtraces which Logster has already gathered.
Note that this commit does not bother to maintain backwards
compatibility and drops the `LOGSTASH_URI` and `UNICORN_LOGSTASH_URI`
ENV variables which were previously used to configure the destination in
which `logstash-logger` would send the logs to. Instead, we introduce
the `ENABLE_LOGSTASH_LOGGER` ENV variable to replace both ENV and remove
the need for the log paths to be specified. Note that the previous
feature was considered experimental as stated in d888d3c54c
and the new feature should be considered experimental as well. The code
may be moved into a plugin in the future.
This is a duplicate of the `host` field which means we are bloating the
logs unnecessarily.
Just remove without depreciation for now but we are open to properly
depreciating it if others depend on this field.
This may be the case when DiscourseLogstashLogger is initialized before
the application (see unicorn.conf.rb)
This commit is a follow-up to 28292d2759.
Co-authored-by: David Taylor <david@taylorhq.com>
Co-authored-by: Sam Saffron <sam.saffron@gmail.com>
Previously we had many places in the app that called `hostname` to get
hostname of a server. This commit replaces the pattern in 2 ways
1. We cache the result in `Discourse.os_hostname` so it is only ever called once
2. We prefer to use Socket.gethostname which avoids making a shell command
This improves performance as we are not spawning hostname processes throughout
the app lifetime
This reduces chances of errors where consumers of strings mutate inputs
and reduces memory usage of the app.
Test suite passes now, but there may be some stuff left, so we will run
a few sites on a branch prior to merging
Alan Guo Xiang Tan
David Taylor
Dan Ungureanu
Sam Saffron
Guo Xiang Tan