Installation on AppEngine

You need to put rocket.py somewhere into your application. E.g

mkdir -P lib
git submodule add https://github.com/mdornseif/approcket_industrial.git lib/approcket_industrial
echo "import os.path" > lib/__init__.py
echo "import site" >> lib/__init__.py
echo "site.addsitedir(os.path.dirname(__file__))" >> lib/__init__.py
echo "./approcket_industrial" >> lib/submodules.pth

Then add it to your app.yaml file, right after the line handlers:

- url: /rocket/.*
  script: lib/approcket_industrial/rocket/handler.py

If you are on Python 2.7 try something like this:

- url: /rocket/.*
  script: rocket.handler.application

Generate a secret key and add it to appengine_config.py

echo "approcket_SECRET_KEY = '`dd if=/dev/urandom count=2000 | shasum | cut -d ' ' -f 1 | tail -n 1`'" >> appengine_config.py

Now your application is ready to deploy.

Checking you models

Your models need an automatically timestamped files like this:

timestamp = db.DateTimeProperty(auto_now=True, indexed=True)

If you have created the field with indexed=False approcket can not work.

Starting Replication

Execute something like this on your database server:

(cd $BASEDIR/approcket_industrial/rocket ; \
    ./replicator.py \
    --database_name=mydb \
    --database_user=mydbuser \
    --database_password=ph7etaXii5Ajek8a \
    --rocketurl=http://myapp.appspot.com/rocket \
    -s 4eabfa74e5d1c9c47e961156f0517205b4486b74 )

History

The fantatic approcket was originaly concived by Kaspars Dancis and published on github. approcket_industrial is a fork removing features and adding robustness and code which is easier to audit. approcket_industrial saves resources by using datastore cursors. It ensures that data only flows in a single direction (from AppEngine to mySQL) and can handle characters illegal in XML. It also ensures keymaterial is kept out of version control.

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