Demo send mail by celery job queue

INTRO

The repo supports sending email asynchronous via task queue/job queue celery, rabbitmq broken and flower tracking in python 3.

Docs:

• Celery Architecture: https://wiki.openstack.org/wiki/Celery#ARCHITECTURE
• Monitoring and Management Guide Introduction: http://docs.celeryproject.org/en/latest/userguide/monitoring.html
• RabbitMQ broker: http://docs.celeryproject.org/en/latest/getting-started/brokers/rabbitmq.html
• Celery Worker: http://docs.celeryproject.org/en/latest/userguide/workers.html

Usage

    # set config.test.json

    # start worker
    pipenv run celery worker -A celery_worker  --conf=flowerconfig.py

    # start Flower
    pipenv run flower -A celery_worker 

    # run demo.py file
    pipenv run python demo.py

    # open flower on localhost:5555 and track result

Set up environment

1. Install RabbitMq on your machine.

• Install at: https://www.dyclassroom.com/howto-mac/how-to-install-rabbitmq-on-mac-using-homebrew

• Install RabbitMQ using Homebrew:$ brew install rabbitmq

• Add to PATH

• RabbitMQ server and CLI script are installed under /usr/local/sbin. Add this to PATH.

  export PATH=$PATH:/usr/local/sbin

• Add the following to .bash_profile file. $ vi ~/.bash_profile

• Inside the .bash_profile file.

  #HOMEBREW RABBITMQ
  export HOMEBREW_RABBITMQ=/usr/local/Cellar/rabbitmq/3.7.11/sbin/
  export PATH=$PATH:$HOMEBREW_RABBITMQ
  

• Start RabbitMQ server

  $ rabbitmq-server
  
    ##  ##
    ##  ##      RabbitMQ 3.7.11. Copyright (C) 2007-2019 Pivotal Software, Inc.
    ##########  Licensed under the MPL.  See http://www.rabbitmq.com/
    ######  ##
    ##########  Logs: /usr/local/var/log/rabbitmq/rabbit@localhost.log
                      /usr/local/var/log/rabbitmq/rabbit@localhost_upgrade.log
  
                Starting broker...
   completed with 6 plugins.
  

• Access dashboard: http://localhost:15672.

  The default username and password is guest and guest respectively.

2. Install pyenv and pipenv

• Install pyenv for mac:

# Install Homebrew if it isn't already available
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" 
brew install pyenv 

# Add pyenv initializer to shell startup script
echo 'eval "$(pyenv init -)"' >> ~/.bash_profile 
source ~/.bash_profile # Reload your profile
pyenv versions

• Install pyenv for ubuntu:

sudo apt update -y
sudo apt install -y make build-essential libssl-dev zlib1g-dev libbz2-dev \
  libreadline-dev libsqlite3-dev wget curl llvm libncurses5-dev libncursesw5-dev \
  xz-utils tk-dev libffi-dev

git clone https://github.com/pyenv/pyenv.git ~/.pyenv

echo 'export PYENV_ROOT="$HOME/.pyenv"'    >> ~/.bashrc
echo 'export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.bashrc
echo -e 'if command -v pyenv 1>/dev/null 2>&1; then\n  eval "$(pyenv init -)"\nfi' >> ~/.bashrc

# restart shell & aftermath check
exec "$SHELL"
pyenv --version

• Install python 3.6.7

pyenv install 3.6.7
pyenv global 3.6.7
python --version # should be 3.6.7

• Install pipenv

# install pipenv
curl https://raw.githubusercontent.com/kennethreitz/pipenv/master/get-pipenv.py | python
echo "
# pipenv setup"                                   >> ~/.bashrc
echo 'export PATH="~/.local:$PATH"'               >> ~/.bashrc
echo 'export PIPENV_VENV_IN_PROJECT=1'            >> ~/.bashrc # project's venv location will be in the project folder as .venv ref. https://pipenv.readthedocs.io/en/latest/advanced/#pipenv.environments.PIPENV_VENV_IN_PROJECT
echo 'export PIPENV_DEFAULT_PYTHON_VERSION=3.6.7' >> ~/.bashrc # project's venv location will be in the project folder as .venv ref. https://pipenv.readthedocs.io/en/latest/advanced/#pipenv.environments.PIPENV_VENV_IN_PROJECT
echo 'eval "$(pipenv --completion)"'              >> ~/.bashrc # shell auto-completion ref. https://pipenv.readthedocs.io/en/latest/advanced/#shell-completion

#restart shell & aftermath check
exec "$SHELL"
pipenv --version

• cd to you_project_path and run pipenv sync to install all dependencies of project.