def __init__(self, configuration=None):
"""Creates a job configuration from the given JSON dict
:param configuration: The JSON dictionary
:type configuration: dict
:raises :class:`job.configuration.configuration.exceptions.InvalidJobConfiguration`: If the JSON is invalid
"""
if not configuration:
configuration = {'job_task': {'docker_params': []}}
self._configuration = configuration
self._pre_task_workspace_names = set()
self._job_task_workspace_names = set()
self._post_task_workspace_names = set()
try:
validate(configuration, JOB_CONFIGURATION_SCHEMA)
except ValidationError as validation_error:
raise InvalidJobConfiguration(validation_error)
self._populate_default_values()
if self._configuration['version'] != CURRENT_VERSION:
raise InvalidJobConfiguration('%s is an unsupported version number' % self._configuration['version'])
self._validate_workspace_names()
def _validate_workspace_names(self):
"""Ensures that no tasks have duplicate workspace names
:raises :class:`job.configuration.configuration.exceptions.InvalidJobConfiguration`: If there is a duplicate
workspace name
"""
for workspace_dict in self._configuration['pre_task']['workspaces']:
name = workspace_dict['name']
if name in self._pre_task_workspace_names:
raise InvalidJobConfiguration(
'Duplicate workspace %s in pre task' % name)
self._pre_task_workspace_names.add(name)
for workspace_dict in self._configuration['job_task']['workspaces']:
name = workspace_dict['name']
if name in self._job_task_workspace_names:
raise InvalidJobConfiguration(
'Duplicate workspace %s in job task' % name)
self._job_task_workspace_names.add(name)
for workspace_dict in self._configuration['post_task']['workspaces']:
name = workspace_dict['name']
if name in self._post_task_workspace_names:
raise InvalidJobConfiguration(
'Duplicate workspace %s in post task' % name)
self._post_task_workspace_names.add(name)
def add_pre_task_workspace(self, name, mode):
"""Adds a needed workspace to this job's pre task
:param name: The name of the workspace
:type name: string
:param mode: The mode of the workspace, either MODE_RO or MODE_RW
:type mode: string
"""
if mode not in [MODE_RO, MODE_RW]:
raise Exception('%s is not a valid mode' % mode)
if name in self._pre_task_workspace_names:
raise InvalidJobConfiguration('Duplicate workspace %s in pre task' % name)
self._configuration['pre_task']['workspaces'].append({'name': name, 'mode': mode})