openstack/python-mistralclient
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Python client for Mistral REST API.
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Toure Dunnon 5b49b9fe62 Running new workflow based on existing execution. 
This is the client side work which will allow the operator
to execute a new workflow based on the input of the same
running workflow.

Depends-On: Iec3d9f3a71a98952860b972acd09ce80e0a849ff
Change-Id: Ib725c68246f263bdbd31655114157cc737ab07f7
Signed-off-by: Vitalii Solodilov <mcdkr@yandex.ru>
(cherry picked from commit e2ff3df5e8)
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doc/source Running new workflow based on existing execution. 2018-02-12 09:28:24 +00:00
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README.rst

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Mistral

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Mistral is a workflow service. Most business processes consist of multiple distinct interconnected steps that need to be executed in a particular order in a distributed environment. A user can describe such a process as a set of tasks and their transitions. After that, it is possible to upload such a description to Mistral, which will take care of state management, correct execution order, parallelism, synchronization and high availability.

Mistral also provides flexible task scheduling so that it can run a process according to a specified schedule (for example, every Sunday at 4.00pm) instead of running it immediately. In Mistral terminology such a set of tasks and relations between them is called a workflow.

Mistral client

Python client for Mistral REST API. Includes python library for Mistral API and Command Line Interface (CLI) library.

Installation

First of all, clone the repo and go to the repo directory:

$ git clone git://git.openstack.org/openstack/python-mistralclient.git
$ cd python-mistralclient

Then just run:

$ pip install -e .

or:

$ pip install -r requirements.txt
$ python setup.py install

Running Mistral client

If Mistral authentication is enabled, provide the information about OpenStack auth to environment variables. Type:

$ export OS_AUTH_URL=http://<Keystone_host>:5000/v2.0
$ export OS_USERNAME=admin
$ export OS_TENANT_NAME=tenant
$ export OS_PASSWORD=secret
$ export OS_MISTRAL_URL=http://<Mistral host>:8989/v2  (optional, by
  default URL=http://localhost:8989/v2)

and in the case that you are authenticating against keystone over https:

$ export OS_CACERT=<path_to_ca_cert>

Note

In client, we can use both Keystone auth versions - v2.0 and v3. But server supports only v3.*

To make sure Mistral client works, type:

$ mistral workbook-list

You can see the list of available commands typing:

$ mistral --help

Useful Links