exec-notify

• Send email notification if command fails with exec-notify.
• Send unconditional notifications with do-notify.

TODOs

• Send notification about unread local mail only once!

• add PKGBUILD

• Rename python module (and git repository?) to exec-notify

• Use subprocess_util > execute_print_capture

  • This way, the user can see the stdout/stderr while it is executed
  • And we can email the stdout/stderr if the process has failed

• New program flow:

  • Read configuration from /etc/exec-notify -> work_dir (default: ~/exec-notify)

  • Create file $work_dir / $start_date-$id.args with $args as content, e.g. ls foo bar

  • If one or more .exit_code files exists and $end_date of at least one .exit_code file is older than 1 minute, then try to send email

    • If email was sent:
      • delete corresponding .exit_code, .stdout, .stderr, .args
      • continue
    • Else:
      • continue

  • Execute $args and redirect stdout/stderr to $work_dir / $start_date-$id.{stdout,stderr}

  • If error occurred, create file $work_dir / $start_date-$id-$end-date.exit_code with content $exit_code

    • Then, send email and if successful delete .exit_code file

  • Delete .args, .stdout, .stderr files

  • If error was reported, exit(1), else exit(0)

Installation

Installation - Arch Linux

make

Installation - pip

Requires pip (e.g. pacman -S --needed python-pip).

Note: Make sure that pip is up-to-date and matches your python version:

python --version
#=> Python 3.10.1

pip --version
#=> pip 20.3.4 from /usr/lib/python3.10/site-packages/pip (python 3.10)

Then install with one of the following options:

sudo python3 -m pip install --upgrade --force-reinstall git+https://codeberg.org/privacy1st/exec-notify
sudo python3 -m pip install --upgrade --force-reinstall .

Installation - venv

More detailed instructions about venv can be found at https://docs.python.org/3/library/venv.html

Create a venv:

python3 -m venv ~/exec-notify/venv

Activate the venv:

source ~/exec-notify/venv/bin/activate
# echo "VIRTUAL_ENV=${VIRTUAL_ENV}"

And choose one source of installation:

# Install from git URL
python3 -m pip install git+https://codeberg.org/privacy1st/exec-notify

# Install from local directory
python3 -m pip install ~/Downloads/git/exec-notify/

(Optionally) list installed modules:

pip list

Configuration

Create configuration file /etc/exec-notify/cfg.ini:

install -Dm0600 /etc/exec-notify/cfg.ini << 'EOF'
[DEFAULT]

[mail]
host = smtp.example.com
port = 465
password = examplePassword

from = noreply@example.com
to = me@example.com

[file]
maildir = /home/exampleUser/mail/
EOF

See also: ./etc/exec-notify/cfg.ini.example

Usage

Usage of exec-notify

Add exec-notify in front of your command to execute.

Example:

exec-notify ls /non/existent/file will mail you the exit code, stdout and stderr of ls /non/existent/file

Usage of notify

Send stdout via mail:

echo "Hello world!" | do-notify

Send stdout and stderr via mail:

echo "Hello world!" 2>&1 | do-notify

Send stdout and specify an optional email subject:

echo "Hello world!" | do-notify "someSubject"

Send message without using a pipe:

do-notify "someSubject" "Hello World! What's up?"

Development

When started with environment variable DE_P1ST_EXEC_NOTIFY set, then the configuration file is read from ./etc/exec-notify/cfg.ini.

Testing

See heading "Installation" above with steps to locally install this module.

Uploading to TestPyPI

More detailed instructions can be found at https://packaging.python.org/tutorials/packaging-projects/

1. Set up a venv
2. Increase/Adjust [metadata][version] in setup.cfg
3. Install the build and twine modules to your venv.
4. Next generate a distribution archive:

python3 -m build

5. Upload the distribution packages with twine. For the username, use __token__. For the password, use a test.pypi.org API token:

python3 -m twine upload --repository testpypi dist/*

6. Congratulations! You can view the uploaded module under:

• https://test.pypi.org/project/exec_notify/