130 lines
3.6 KiB
Python
130 lines
3.6 KiB
Python
# Copyright 2014 - Mirantis, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from mistral.utils import serializers
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from mistral.workflow import states
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class Result(object):
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"""Explicit data structure containing a result of task execution."""
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def __init__(self, data=None, error=None):
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self.data = data
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self.error = error
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def __repr__(self):
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return 'Result [data=%s, error=%s]' % (
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repr(self.data), repr(self.error))
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def is_error(self):
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return self.error is not None
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def is_success(self):
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return not self.is_error()
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def __eq__(self, other):
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return self.data == other.data and self.error == other.error
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class ResultSerializer(serializers.Serializer):
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def serialize(self, entity):
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return {'data': entity.data, 'error': entity.error}
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def deserialize(self, entity):
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return Result(entity['data'], entity['error'])
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def find_task_execution_not_state(wf_ex, task_spec, state):
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task_execs = [
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t for t in wf_ex.task_executions
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if t.name == task_spec.get_name() and t.state != state
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]
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return task_execs[0] if len(task_execs) > 0 else None
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def find_task_execution_with_state(wf_ex, task_spec, state):
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task_execs = [
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t for t in wf_ex.task_executions
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if t.name == task_spec.get_name() and t.state == state
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]
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return task_execs[0] if len(task_execs) > 0 else None
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def find_task_executions_by_name(wf_ex, task_name):
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return [t for t in wf_ex.task_executions if t.name == task_name]
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def find_task_executions_by_spec(wf_ex, task_spec):
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return find_task_executions_by_name(wf_ex, task_spec.get_name())
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def find_task_executions_by_specs(wf_ex, task_specs):
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res = []
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for t_s in task_specs:
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res = res + find_task_executions_by_spec(wf_ex, t_s)
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return res
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def find_task_executions_with_state(wf_ex, state):
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return [t for t in wf_ex.task_executions if t.state == state]
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def find_running_task_executions(wf_ex):
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return find_task_executions_with_state(wf_ex, states.RUNNING)
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def find_completed_tasks(wf_ex):
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return [
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t for t in wf_ex.task_executions if states.is_completed(t.state)
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]
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def find_successful_task_executions(wf_ex):
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return find_task_executions_with_state(wf_ex, states.SUCCESS)
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def find_incomplete_task_executions(wf_ex):
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return [t for t in wf_ex.task_executions
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if not states.is_completed(t.state)]
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def find_error_task_executions(wf_ex):
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return find_task_executions_with_state(wf_ex, states.ERROR)
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def construct_fail_info_message(wf_ctrl, wf_ex):
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# Try to find where error is exactly.
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failed_tasks = filter(
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lambda t: not wf_ctrl.is_error_handled_for(t),
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find_error_task_executions(wf_ex)
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)
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errors = []
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for t in failed_tasks:
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errors += [
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("error in task '%s': "
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"%s" % (t.name, str(ex.output.get('result', 'Unknown')))
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if ex.output else 'Unknown')
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for ex in t.executions
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]
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state_info = "Failure caused by %s" % ';\n '.join(errors)
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return state_info
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