post_install(){

    /usr/bin/mkdir -p /opt/sentry/celery
    # Restart systemd-sysusers so it picks up our user account.
    /usr/bin/systemd-sysusers /usr/lib/sysusers.d/sentry.conf

    # Generate a new configuration.
    if [ ! -e "/etc/sentry/sentry.conf.py" ] || [ ! -e "/etc/sentry/config.yml" ] ; then
        "/opt/sentry/bin/sentry" init "/etc/sentry"
    fi

    /usr/bin/chown -R sentry:sentry /opt/sentry
    /usr/bin/chown -R sentry:sentry /etc/sentry

    /usr/bin/chmod 0600 /etc/sentry/sentry.conf.py
    /usr/bin/chmod 0600 /etc/sentry/config.yml

cat << EOF

INSTALLATION STEPS

1) Edit the configurations in /etc/sentry before proceeding to the next step.

2) Run migrations:

    sudo -u sentry /opt/sentry/bin/sentry --config=/etc/sentry upgrade

3) Create the initial superuser if you skipped doing so in the previous step:

    sudo -u sentry /opt/sentry/bin/sentry --config=/etc/sentry createuser

4) Start Sentry:

    sudo systemctl start sentry

If you wish to run Sentry manually, e.g. to test your configuration:

    sudo -u sentry /opt/sentry/bin/sentry --config=/etc/sentry run web

REDIS

In order to facilitate installing Sentry on a containerized system (e.g.
systemd-nspawn), we have removed Redis from the "depends" array in the
PKGBUILD. Redis is still REQUIRED and sentry-celery will not run without it;
however, for users where the installation of extra services and daemons may be
an issue, we've been experimenting with trimming down hard dependencies. If
you find sentry-celery fails to run, you will need to configure a Redis
instance either locally or remotely.

OPTIONAL DEPENDENCIES

We've removed LLVM from the "depends" array as part of our dependency cleanup
to make life a little bit easier for those who have been requesting reduced
dependency builds for quite some time. Now, you should no longer need to
modify the PKGBUILD prior to build or installation. Please note that projects
making use of dsym (symsynd) still require the presence of LLVM. It has been
moved to "optdepends" for this reason.

IF THE INSTALL FAILS DURING DATABASE MIGRATIONS

By default, Sentry wants to run as the PostgreSQL super user "postgres". This
is probably undesirable, but Sentry will not install otherwise. As a
workaround, you have two options: 1) Configure the user running Sentry as
a user temporarily for installation (removing super user access afterwards) or
2) perform the installation with the "postgres" user and change the database
permissions after the migrations have completed. For information on changing
table and sequence permissions, see the Stack Overflow answer here:

    https://stackoverflow.com/a/2686185

EXTRAS

To install additional plugins, you'll need to use Sentry's local copy of pip:

    sudo -u sentry /opt/sentry/bin/pip install <package>

REMOVAL

This package does not remove the Sentry user by default. You will be required
to perform this set manually.

THANKS

I appreciate all of the comments and help I've received from users like you on
the AUR. Over the years of maintaining this package, I've had a tremendous
amount of help and encouragement that's produced a highly usable build.
Together, we've resolved many confounding issues, and several of you have
isolated bugs in the upstream package.

I would like to thank each and every one of you for your help and
participation. Please report any issues related to this PKGBUILD on the AUR or
open a ticket on my GitHub project page:

https://aur.archlinux.org/packages/sentry/
https://github.com/zancarius/archlinux-pkgbuilds

EOF
}

post_upgrade(){

    /usr/bin/mkdir -p /opt/sentry/celery

    /usr/bin/chown -R sentry:sentry /etc/sentry
    /usr/bin/chown -R sentry:sentry /opt/sentry

    /usr/bin/chmod 0600 /etc/sentry/sentry.conf.py
    /usr/bin/chmod 0600 /etc/sentry/config.yml

cat << EOF

UPGRADE STEPS

1) Stop Sentry and its related services (and reload systemd):

    sudo systemctl stop sentry
    sudo systemctl daemon-reload

2) BACK-UP YOUR DATABASE!

3) Update Sentry's configuration files:

    sudo -u sentry mkdir /etc/sentry/temp
    sudo -u sentry /opt/sentry/bin/sentry init /etc/sentry/temp

    # Optionally edit the old configurations:
    sudo vimdiff /etc/sentry/sentry.conf.py /etc/sentry/temp/sentry.conf.py
    sudo vimdiff /etc/sentry/config.yml /etc/sentry/temp/config.yml

    # ...or move Sentry's YAML configuration to the config root:
    sudo -u sentry mv /etc/sentry/temp/sentry.conf.py /etc/sentry/
    sudo -u sentry mv /etc/sentry/temp/config.yml /etc/sentry/

    # Delete the temporary config directory:
    sudo rm -r /etc/sentry/temp

    See here:
    https://docs.getsentry.com/on-premise/server/config/

4) Run the database migrations:

!!! ALWAYS BACK-UP YOUR DATABASE PRIOR TO UPGRADING SENTRY !!!

    sudo -u sentry /opt/sentry/bin/sentry --config=/etc/sentry upgrade

5) Start Sentry:

    sudo systemctl start sentry

If you wish to run Sentry manually, e.g. to test your configuration:

    sudo -u sentry /opt/sentry/bin/sentry --config=/etc/sentry run web

You may need to run the following services if Sentry's web service fails
during manual testing:

    sudo -u sentry /opt/sentry/bin/sentry --config=/etc/sentry run worker
    sudo -u sentry /opt/sentry/bin/sentry --config=/etc/sentry run cron

EXTRAS

To install additional plugins, you'll need to use Sentry's local copy of pip:

    sudo -u sentry /opt/sentry/bin/pip install <package>

REDIS

In order to facilitate installing Sentry on a containerized system (e.g.
systemd-nspawn), we have removed Redis from the "depends" array in the
PKGBUILD. Redis is still REQUIRED and sentry-celery will not run without it;
however, for users where the installation of extra services and daemons may be
an issue, we've been experimenting with trimming down hard dependencies. If
you find sentry-celery fails to run, you will need to configure a Redis
instance either locally or remotely.

OPTIONAL DEPENDENCIES

We've removed LLVM from the "depends" array as part of our dependency cleanup
to make life a little easier for those who have been requesting reduced
dependency builds for quite some time. Now, you should no longer need to
modify the PKGBUILD prior to build or installation. Please note that projects
making use of dsym (symsynd) still require the presence of LLVM. It has been
moved to "optdepends" for this reason.

I'VE UPGRADED AND SENTRY WON'T START!

Verify that you have some of the installation requirements available either on
the system Sentry is installed or remotely. In particular:

 - Check that you have Redis installed somewhere and Sentry is configured to
   use it (sentry-celery requires this for background task handling, among
   others).

 - Make sure you've run the appropriate migrations. Sentry isn't likely to
   start without this.

 - Check database permissions. Out of the box, Sentry expects the database
   connection to run as the "postgres" user. This isn't desirable on non-
   containerized installs; if you've changed database permissions at some
   point, you may need to see which user Sentry is connecting as and
   temporarily change it to "postgres."

UPGRADE FAILS WITH DATABASE ERRORS

Sentry expects database migrations to be performed by the super user
"postgres" and may occasionally install plugins or other features that require
super user access. There are two choices: 1) Temporarily set the configured
database user to super user or 2) run the migrations as "postgres". When doing
the latter, you may wish to change table and sequence permissions to a more
sane state for greater security. If you need assistance doing so, please
consult the Stack Overflow answer:

    https://stackoverflow.com/a/2686185

THANKS

I appreciate all of the comments and help I've received from users like you on
the AUR. Over the years of maintaining this package, I've had a tremendous
amount of help and encouragement that's produced a highly usable build.
Together, we've resolved many confounding issues, and several of you have
isolated bugs in the upstream package.

I would like to thank each and every one of you for your help and
participation. Please report any issues related to this PKGBUILD on the AUR or
open a ticket on my GitHub project page:

https://aur.archlinux.org/packages/sentry/
https://github.com/zancarius/archlinux-pkgbuilds

DON'T FORGET TO CREATE A BACKUP OF YOUR SENTRY DATABASE BEFORE RUNNING
MIGRATIONS!

EOF

}

post_remove(){

cat << EOF
Sentry has been removed. If this is a permanent decision, you'll need to
remove Sentry's system account manually (userdel sentry).
EOF

}