name: SchemaGen
inputs:
- {name: statistics_uri, type: ExampleStatisticsUri}
- {name: output_schema_uri, type: SchemaUri}
- {name: infer_feature_shape, type: Boolean, optional: true}
- {name: beam_pipeline_args, type: JsonArray, optional: true}
outputs:
- {name: schema_uri, type: SchemaUri}
implementation:
  container:
    image: tensorflow/tfx:0.21.4
    command:
    - python3
    - -u
    - -c
    - |
      def SchemaGen(
          statistics_uri,
          output_schema_uri,
          infer_feature_shape = None,
          beam_pipeline_args = None,
      ):
          from tfx.components import SchemaGen as component_class

          #Generated code
          import json
          import os
          import tempfile
          import tensorflow
          from google.protobuf import json_format, message
          from tfx.types import channel_utils, artifact_utils
          from tfx.components.base import base_executor

          arguments = locals().copy()

          component_class_args = {}

          for name, execution_parameter in component_class.SPEC_CLASS.PARAMETERS.items():
              argument_value = arguments.get(name, None)
              if argument_value is None:
                  continue
              parameter_type = execution_parameter.type
              if isinstance(parameter_type, type) and issubclass(parameter_type, message.Message):
                  argument_value_obj = parameter_type()
                  json_format.Parse(argument_value, argument_value_obj)
              else:
                  argument_value_obj = argument_value
              component_class_args[name] = argument_value_obj

          for name, channel_parameter in component_class.SPEC_CLASS.INPUTS.items():
              artifact_path = arguments.get(name + '_uri') or arguments.get(name + '_path')
              if artifact_path:
                  artifact = channel_parameter.type()
                  artifact.uri = artifact_path.rstrip('/') + '/'  # Some TFX components require that the artifact URIs end with a slash
                  if channel_parameter.type.PROPERTIES and 'split_names' in channel_parameter.type.PROPERTIES:
                      # Recovering splits
                      subdirs = tensorflow.io.gfile.listdir(artifact_path)
                      # Workaround for https://github.com/tensorflow/tensorflow/issues/39167
                      subdirs = [subdir.rstrip('/') for subdir in subdirs]
                      artifact.split_names = artifact_utils.encode_split_names(sorted(subdirs))
                  component_class_args[name] = channel_utils.as_channel([artifact])

          component_class_instance = component_class(**component_class_args)

          input_dict = channel_utils.unwrap_channel_dict(component_class_instance.inputs.get_all())
          output_dict = channel_utils.unwrap_channel_dict(component_class_instance.outputs.get_all())
          exec_properties = component_class_instance.exec_properties

          # Generating paths for output artifacts
          for name, artifacts in output_dict.items():
              base_artifact_path = arguments.get('output_' + name + '_uri') or arguments.get(name + '_path')
              if base_artifact_path:
                  # Are there still cases where output channel has multiple artifacts?
                  for idx, artifact in enumerate(artifacts):
                      subdir = str(idx + 1) if idx > 0 else ''
                      artifact.uri = os.path.join(base_artifact_path, subdir)  # Ends with '/'

          print('component instance: ' + str(component_class_instance))

          # Workaround for a TFX+Beam bug to make DataflowRunner work.
          # Remove after the next release that has https://github.com/tensorflow/tfx/commit/ddb01c02426d59e8bd541e3fd3cbaaf68779b2df
          import tfx
          tfx.version.__version__ += 'dev'

          executor_context = base_executor.BaseExecutor.Context(
              beam_pipeline_args=beam_pipeline_args,
              tmp_dir=tempfile.gettempdir(),
              unique_id='tfx_component',
          )
          executor = component_class_instance.executor_spec.executor_class(executor_context)
          executor.Do(
              input_dict=input_dict,
              output_dict=output_dict,
              exec_properties=exec_properties,
          )

          return (output_schema_uri, )

      def _deserialize_bool(s) -> bool:
          from distutils.util import strtobool
          return strtobool(s) == 1

      import json
      import argparse
      _parser = argparse.ArgumentParser(prog='SchemaGen', description='')
      _parser.add_argument("--statistics-uri", dest="statistics_uri", type=str, required=True, default=argparse.SUPPRESS)
      _parser.add_argument("--output-schema-uri", dest="output_schema_uri", type=str, required=True, default=argparse.SUPPRESS)
      _parser.add_argument("--infer-feature-shape", dest="infer_feature_shape", type=_deserialize_bool, required=False, default=argparse.SUPPRESS)
      _parser.add_argument("--beam-pipeline-args", dest="beam_pipeline_args", type=json.loads, required=False, default=argparse.SUPPRESS)
      _parser.add_argument("----output-paths", dest="_output_paths", type=str, nargs=1)
      _parsed_args = vars(_parser.parse_args())
      _output_files = _parsed_args.pop("_output_paths", [])

      _outputs = SchemaGen(**_parsed_args)

      _output_serializers = [
          str,

      ]

      import os
      for idx, output_file in enumerate(_output_files):
          try:
              os.makedirs(os.path.dirname(output_file))
          except OSError:
              pass
          with open(output_file, 'w') as f:
              f.write(_output_serializers[idx](_outputs[idx]))
    args:
    - --statistics-uri
    - {inputValue: statistics_uri}
    - --output-schema-uri
    - {inputValue: output_schema_uri}
    - if:
        cond: {isPresent: infer_feature_shape}
        then:
        - --infer-feature-shape
        - {inputValue: infer_feature_shape}
    - if:
        cond: {isPresent: beam_pipeline_args}
        then:
        - --beam-pipeline-args
        - {inputValue: beam_pipeline_args}
    - '----output-paths'
    - {outputPath: schema_uri}