old_contents: """Updates the cache for the `covidcast_meta` endpiont."""
  
  # standard library
  import argparse
  import sys
  import time
  
  # first party
  from delphi.epidata.acquisition.covidcast.database import Database
  from delphi.epidata.acquisition.covidcast.logger import get_structured_logger
  from delphi.epidata.client.delphi_epidata import Epidata
  
  def get_argument_parser():
    """Define command line arguments."""
  
    parser = argparse.ArgumentParser()
    parser.add_argument("--log_file", help="filename for log output")
    return parser
  
  
  def main(args, epidata_impl=Epidata, database_impl=Database):
    """Update the covidcast metadata cache.
  
    `args`: parsed command-line arguments
    """
    logger = get_structured_logger(
        "metadata_cache_updater",
        filename=args.log_file)
    start_time = time.time()
    database = database_impl()
    database.connect()
  
    # fetch metadata
    try:
      metadata_calculation_start_time = time.time()
      metadata = database.get_covidcast_meta()
      metadata_calculation_interval_in_seconds = metadata_calculation_start_time - start_time
    except:
      # clean up before failing
      database.disconnect(True)
      raise
  
    args = ("success",1)
    if len(metadata)==0:
      args = ("no results",-2)
      
    print('covidcast_meta result: %s (code %d)' % args)
  
    if args[-1] != 1:
      print('unable to cache epidata')
      return False
  
    # update the cache
    try:
      metadata_update_start_time = time.time()
      database.update_covidcast_meta_cache(metadata)
      metadata_update_interval_in_seconds = time.time() - metadata_update_start_time
      print('successfully cached epidata')
    finally:
      # no catch block so that an exception above will cause the program to
      # fail after the following cleanup
      database.disconnect(True)
  
    logger.info(
        "Generated and updated covidcast metadata",
        metadata_calculation_interval_in_seconds=round(
            metadata_calculation_interval_in_seconds, 2),
        metadata_update_interval_in_seconds=round(
            metadata_update_interval_in_seconds, 2),
        total_runtime_in_seconds=round(time.time() - start_time, 2))
    return True
  
  
  if __name__ == '__main__':
    if not main(get_argument_parser().parse_args()):
      sys.exit(1)
  
new_contents: """Updates the cache for the `covidcast_meta` endpiont."""
  
  # standard library
  import argparse
  import sys
  import time
  
  # first party
  from delphi.epidata.acquisition.covidcast.database import Database
  from delphi.epidata.acquisition.covidcast.logger import get_structured_logger
  from delphi.epidata.client.delphi_epidata import Epidata
  
  def get_argument_parser():
    """Define command line arguments."""
  
    parser = argparse.ArgumentParser()
    parser.add_argument("--log_file", help="filename for log output")
    return parser
  
  
  def main(args, epidata_impl=Epidata, database_impl=Database):
    """Update the covidcast metadata cache.
  
    `args`: parsed command-line arguments
    """
    logger = get_structured_logger(
        "metadata_cache_updater",
        filename=args.log_file)
    start_time = time.time()
    database = database_impl()
    database.connect()
  
    # fetch metadata
    try:
      metadata_calculation_start_time = time.time()
      metadata = database.get_covidcast_meta()
      metadata_calculation_interval_in_seconds = metadata_calculation_start_time - start_time
    except:
      # clean up before failing
      database.disconnect(True)
      raise
  
    args = ("success",1)
    if len(metadata)==0:
      args = ("no results",-2)
  
    print('covidcast_meta result: %s (code %d)' % args)
  
    if args[-1] != 1:
      print('unable to cache epidata')
      return False
  
    # update the cache
    try:
      metadata_update_start_time = time.time()
      database.update_covidcast_meta_cache(metadata)
      metadata_update_interval_in_seconds = time.time() - metadata_update_start_time
      print('successfully cached epidata')
    finally:
      # no catch block so that an exception above will cause the program to
      # fail after the following cleanup
      database.disconnect(True)
  
    logger.info(
        "Generated and updated covidcast metadata",
        metadata_calculation_interval_in_seconds=round(
            metadata_calculation_interval_in_seconds, 2),
        metadata_update_interval_in_seconds=round(
            metadata_update_interval_in_seconds, 2),
        total_runtime_in_seconds=round(time.time() - start_time, 2))
    return True
  
  
  if __name__ == '__main__':
    if not main(get_argument_parser().parse_args()):
      sys.exit(1)
  
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