kedro-hooks/src/kedro-hooks/preflight.py
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🔥 #kedrotips hooks can be created using modules

Date: May 31, 2020

🔥 #kedrotips hooks can be created using modules

[code]
  # kedro-hooks/src/kedro-hooks/preflight.py
  from kedro.hooks import hook_impl
  from kedro.io.core import DataSetNotFoundError
  from colorama import Fore
  import textwrap


  @hook_impl
  def before_pipeline_run(run_params, pipeline, catalog):
      missing_input = [i for i in pipeline.inputs() if not getattr(catalog.datasets, i)._exists()]
      if len(missing_input) != 0:
          raise DataSetNotFoundError(textwrap.dedent(f'''

      {Fore.LIGHTBLACK_EX}――――――――  {Fore.RED}PREFLIGHT ERROR {Fore.LIGHTBLACK_EX}―――――――――
      {Fore.RESET} preflight of pipeline failed due to {Fore.YELLOW}missing datasets
      {Fore.BLUE} {missing_input}{Fore.RESET}
      '''))