Difference between revisions of "Mistral/DSLv2"
< Mistral
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* '''tasks''' - list of tasks in this workflow, each task represents a computational step in the workflow. | * '''tasks''' - list of tasks in this workflow, each task represents a computational step in the workflow. | ||
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===== Direct Workflow Task ===== | ===== Direct Workflow Task ===== | ||
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* '''on-finish''' - task which will be scheduled on execution after current task has finished | * '''on-finish''' - task which will be scheduled on execution after current task has finished | ||
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'''TODO''' | '''TODO''' | ||
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* '''tasks''' - list of tasks in this workflow, each task represents a computational step in the workflow. | * '''tasks''' - list of tasks in this workflow, each task represents a computational step in the workflow. | ||
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===== Reverse Workflow Task ===== | ===== Reverse Workflow Task ===== | ||
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* '''input''' - actual parameters for the task, each value can be either some number, string etc, or YAQL expression to retrieve value from task context | * '''input''' - actual parameters for the task, each value can be either some number, string etc, or YAQL expression to retrieve value from task context | ||
| − | + | ===== YAML example: ===== | |
'''TODO''' | '''TODO''' | ||
Revision as of 20:28, 23 September 2014
Mistral DSL version 2 specification
Workflows
TODO
Workflow Types
Direct Workflow
Attributes
- tasks - list of tasks in this workflow, each task represents a computational step in the workflow.
Direct Workflow Task
Represents a step in workflow, for example 'TODO'
Attributes
- action - name of action to perform
- workflow - name of workflow to perform
- input - actual parameters for the task, each value can be either some number, string etc, or YAQL expression to retrieve value from task context
- on-success - task which will be scheduled on execution after current task has finished with state 'SUCCESS'
- on-error - task which will be scheduled on execution after current task has finished with state 'ERROR'
- on-finish - task which will be scheduled on execution after current task has finished
YAML example: =
TODO
Reverse Workflow
Attributes
- tasks - list of tasks in this workflow, each task represents a computational step in the workflow.
Reverse Workflow Task
Represents a step in workflow, for example 'TODO'
Attributes
- action - name of action to perform
- workflow - name of workflow to perform
- requires - list of tasks which should be execute before this tasks, or list of task names as a keys and condition as a value, this is optional parameter
- input - actual parameters for the task, each value can be either some number, string etc, or YAQL expression to retrieve value from task context
YAML example:
TODO
Actions
TODO
Attributes
- name - action name (string without space, mandatory attribute).
- base - name of base action that this action is built on top of.
- base-input - dictionary whose structure is defined by action class. For example, for 'std.http' action it contains 'url', 'method', 'body' and 'headers' according to HTTP protocol specification.
- input - list containing parameter names which should or could be specified in task. This attribute is optional and used only for documenting purposes.
- output - any data structure defining how to transform the output of base action into the output of this action. I can optionally have YAQL expressions to access properties of base action output. (See more about YAQL at https://pypi.python.org/pypi/yaql/0.3)
YAML example:
TODO
Triggers
NOTE: Triggers are implemented as part of version 0.1.0, they will be included into 0.2.0
Using triggers it is possible to run workflows according to specific rules: periodically setting a cron (http://en.wikipedia.org/wiki/Cron) pattern or on external events like ceilometer alarm.
Attributes
TODO
YAML example:
TODO
Workbooks
TODO
Attributes
TODO
YAML example:
TODO
