text: # MIT License
  #
  # Copyright (c) 2020 Evgeny Medvedev evge.medvedev@gmail.com
  #
  # Permission is hereby granted, free of charge, to any person obtaining a copy
  # of this software and associated documentation files (the "Software"), to deal
  # in the Software without restriction, including without limitation the rights
  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
  #
  # The above copyright notice and this permission notice shall be included in all
  # copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  # SOFTWARE.
  
  
  import click
  from blockchainetl_common.logging_utils import logging_basic_config
  
  from ethereum2etl.api.build_api import build_api
  from ethereum2etl.jobs.export_beacon_blocks_job import ExportBeaconBlocksJob
  from ethereum2etl.jobs.exporters.ethereum2_item_exporter import Ethereum2ItemExporter
  from ethereum2etl.service.ethereum2_service import Ethereum2Service
  
  logging_basic_config()
  
  
  @click.command(context_settings=dict(help_option_names=['-h', '--help']))
  @click.option('-s', '--start-block', default=0, show_default=True, type=int, help='Start block')
  @click.option('-e', '--end-block', required=True, type=int, help='End block')
  @click.option('-p', '--provider-uri', default='https://medalla.infura.io', show_default=True, type=str,
                help='The URI of the remote Ethereum 2 node')
  @click.option('-r', '--rate-limit', default=None, show_default=True, type=int,
                help='Maximum requests per second for provider in case it has rate limiting')
  @click.option('-w', '--max-workers', default=5, show_default=True, type=int, help='The maximum number of workers.')
  @click.option('-o', '--output-dir', default=None, type=str, help='The output directory for block data.')
  @click.option('-f', '--output-format', default='json', show_default=True, type=click.Choice(['json', 'csv']),
                help='The output format.')
  def export_beacon_blocks(start_block, end_block, provider_uri, rate_limit, max_workers, output_dir, output_format):
      api = build_api(provider_uri, rate_limit)
      ethereum2_service = Ethereum2Service(api)
  
      job = ExportBeaconBlocksJob(
          start_block=start_block,
          end_block=end_block,
          ethereum2_service=ethereum2_service,
          max_workers=max_workers,
          item_exporter=Ethereum2ItemExporter(output_dir, output_format=output_format),
      )
      job.run()
  