Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
2 changed files
with
110 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,109 @@ | ||
# -*- coding: utf-8 -*- | ||
# | ||
# This file is part of REANA. | ||
# Copyright (C) 2018 CERN. | ||
# | ||
# REANA is free software; you can redistribute it and/or modify it under the | ||
# terms of the GNU General Public License as published by the Free Software | ||
# Foundation; either version 2 of the License, or (at your option) any later | ||
# version. | ||
# | ||
# REANA is distributed in the hope that it will be useful, but WITHOUT ANY | ||
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR | ||
# A PARTICULAR PURPOSE. See the GNU General Public License for more details. | ||
# | ||
# You should have received a copy of the GNU General Public License along with | ||
# REANA; if not, write to the Free Software Foundation, Inc., 59 Temple Place, | ||
# Suite 330, Boston, MA 02111-1307, USA. | ||
# | ||
# In applying this license, CERN does not waive the privileges and immunities | ||
# granted to it by virtue of its status as an Intergovernmental Organization or | ||
# submit itself to any jurisdiction. | ||
"""REANA Workflow Engine Serial implementation utils.""" | ||
|
||
|
||
import json | ||
from copy import deepcopy | ||
from string import Template | ||
|
||
from jsonschema import ValidationError, validate | ||
|
||
serial_workflow_schema = { | ||
"$schema": "http://json-schema.org/draft-06/schema#", | ||
"id": "serial_workflow_specification", | ||
"type": "object", | ||
"required": ["steps"], | ||
"properties": { | ||
"steps": { | ||
"$id": "#/properties/steps", | ||
"type": "array", | ||
"minItems": 1, | ||
"items": { | ||
"$id": "#/properties/steps/items", | ||
"type": "object", | ||
"required": [ | ||
"commands" | ||
], | ||
"properties": { | ||
"environment": { | ||
"$id": "#/properties/steps/properties/environment", | ||
"type": "string", | ||
}, | ||
"commands": { | ||
"$id": "#/properties/steps/properties/commands", | ||
"type": "array", | ||
"minItems": 1, | ||
"items": { | ||
"$id": "#/properties/steps/items/properties/" | ||
"commands/items", | ||
"type": "string" | ||
}, | ||
} | ||
} | ||
} | ||
} | ||
} | ||
} | ||
|
||
|
||
def serial_load(workflow_file, specification, parameters): | ||
"""Validate and return a expanded REANA Serial workflow specification. | ||
:param workflow_file: A specification file compliant with | ||
REANA Serial workflow specification. | ||
:returns: A dictionary which represents the valid Serial workflow with all | ||
parameters expanded. | ||
""" | ||
if not specification: | ||
with open(workflow_file, 'r') as f: | ||
specification = json.loads(f.read()) | ||
|
||
expanded_specification = _expand_parameters(specification, parameters) | ||
|
||
validate(specification, serial_workflow_schema) | ||
|
||
return expanded_specification | ||
|
||
|
||
def _expand_parameters(specification, parameters): | ||
"""Expand parameters inside comands for Serial workflow specifications. | ||
:param specification: Full valid Serial workflow specification. | ||
:param parameters: Parameters to be extended on a Serial specification. | ||
:returns: Specification with expanded parameters (all $varname and | ||
${varname} will be expanded with their value). Otherwise an error | ||
will be thrown if the parameters can not be expanded. | ||
:raises: jsonschema.ValidationError | ||
""" | ||
expanded_specification = deepcopy(specification) | ||
|
||
try: | ||
for step in expanded_specification['steps']: | ||
for command in step['commands']: | ||
command = Template(command).substitute(parameters) | ||
|
||
return expanded_specification | ||
except KeyError as e: | ||
raise ValidationError('Workflow parameter(s) could not ' | ||
'be expanded. Please take a look ' | ||
'to {params}'.format(params=str(e))) |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
|
@@ -66,6 +66,7 @@ | |
'checksumdir>=1.1.4', | ||
'click>=6.7', | ||
'fs>=0.5.4', | ||
'jsonschema>=2.6.0', | ||
'pika>=0.12.0', | ||
] | ||
|
||
|