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import logging
import logging.config
from abc import ABC, abstractmethod
from typing import List
from onapsdk.configuration import settings
class BaseStep(ABC):
"""Base step class."""
_logger: logging.Logger = logging.getLogger("")
def __init_subclass__(cls):
"""Subclass initialization.
Add _logger property for any BaseStep subclass
"""
super().__init_subclass__()
cls._logger: logging.Logger = logging.getLogger("")
logging.config.dictConfig(settings.LOG_CONFIG)
def __init__(self, cleanup: bool = False) -> None:
"""Step initialization.
Args:
cleanup(bool, optional): Determines if cleanup action should be called.
"""
self._steps: List["BaseStep"] = []
self._cleanup: bool = cleanup
self._parent: "BaseStep" = None
def add_step(self, step: "BaseStep") -> None:
"""Add substep.
Add substep and mark step as a substep parent.
Args:
step (BaseStep): Step object
"""
self._steps.append(step)
step._parent: "BaseStep" = self
@property
def parent(self) -> "BaseStep":
"""Step parent.
If parent is not set the step is a root one.
"""
return self._parent
@property
def is_root(self) -> bool:
"""Is a root step.
Step is a root if has no parent
Returns:
bool: True if step is a root step, False otherwise
"""
return self._parent is None
def execute(self) -> None:
"""Step's action.
Run all substeps action before it's own action.
Override this method and remember to call `super().action()` before.
"""
for step in self._steps:
step.execute()
def cleanup(self) -> None:
"""Step's cleanup.
Not all steps has to have cleanup method
"""
if self._cleanup:
for step in self._steps:
step.cleanup()
class YamlTemplateBaseStep(BaseStep, ABC):
"""Base YAML template step."""
@property
@abstractmethod
def yaml_template(self) -> dict:
"""YAML template abstract property.
Every YAML template step need to implement that property.
Returns:
dict: YAML template
"""
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