Dima Shulyak 4dd82c6be3 Tasklib implementation in python

Medium between configuration providers and fuel orchestration
solution.

check README.md and functional tests for better understanding
how it works

HOW TO RUN:
python setup.py develop

taskcmd -c tasklib/tests/functional/conf.yaml run puppet/sleep

taskcmd -c tasklib/tests/functional/conf.yaml run exec/fail

taskcmd -c tasklib/tests/functional/conf.yaml daemon exec/long
taskcmd -c tasklib/tests/functional/conf.yaml status exec/long

Related to blueprint granular-deployment-based-on-tasks

Change-Id: Ifed1a9b90042bbbc93215a30dfb34e29dbe8fba2

2014-10-15 09:51:15 +03:00

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Tasklib

Tasklib is mediator between different configuration management providers and orchestration mechanism in Fuel.

It will try to cover next areas:

part of the plugable fuel architecture See tasklib/tasklib/tests/functional for detailed descriptionof how tasklib plugability will work
Control mechanism for tasks in fuel To support different types of workflow we will provide ability to terminate, list all running, stop/pause task
Abstraction layer between tasks and orchestration, which will allow easier development and debuging of tasks
General reporting solution for tasks

Executions drivers

puppet
exec

Puppet

Puppet executor supports general metadata for running puppet manifests. Example of such metadata (task.yaml):

type: puppet                        - required
puppet_manifest: file.pp            - default is site.pp
puppet_moduels: /etc/puppet/modules
puppet_options: --debug

All defaults you can find in:

taskcmd conf

It works next way: After task.yaml is found - executor will look for puppet_manifest and run: puppet apply --modulepath=/etc/puppet/modules file.pp with additional options you will provide

Exec

type: exec       - required
cmd: echo 12     - required

will execute any cmd provided as subprocess

EXAMPLES:

taskcmd -c tasklib/tests/functional/conf.yaml conf

taskcmd -c tasklib/tests/functional/conf.yaml list

taskcmd -c tasklib/tests/functional/conf.yaml daemon puppet/sleep taskcmd -c tasklib/tests/functional/conf.yaml status puppet/sleep

taskcmd -c tasklib/tests/functional/conf.yaml run puppet/cmd

taskcmd -c tasklib/tests/functional/conf.yaml run puppet/invalid

HOW TO RUN TESTS:

python setup.py develop pip install -r test-requires.txt

nosetests tasklib/tests

For some functional tests installed puppet is required, so if you dont have puppet - they will be skipped

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