# Copyright 2016 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ==============================================================================
"""Test runner for TensorFlow tests."""

import os
import shlex
import sys
import time

from absl import app
from absl import flags

from google.protobuf import json_format
from google.protobuf import text_format
from tensorflow.core.util import test_log_pb2
from tensorflow.python.platform import gfile
from tensorflow.python.platform import test
from tensorflow.python.platform import tf_logging
from tensorflow.tools.test import run_and_gather_logs_lib

# pylint: disable=g-import-not-at-top
# pylint: disable=g-bad-import-order
# pylint: disable=unused-import
# Note: cpuinfo and psutil are not installed for you in the TensorFlow
# OSS tree.  They are installable via pip.
try:
  import cpuinfo
  import psutil
except ImportError as e:
  tf_logging.error("\n\n\nERROR: Unable to import necessary library: {}.  "
                   "Issuing a soft exit.\n\n\n".format(e))
  sys.exit(0)
# pylint: enable=g-bad-import-order
# pylint: enable=unused-import

FLAGS = flags.FLAGS

flags.DEFINE_string("name", "", """Benchmark target identifier.""")
flags.DEFINE_string("test_name", "", """Test target to run.""")
flags.DEFINE_multi_string(
    "test_args", "", """\
Test arguments, space separated. May be specified more than once, in which case
the args are all appended.""")
flags.DEFINE_boolean("test_log_output_use_tmpdir", False,
                     "Whether to store the log output into tmpdir.")
flags.DEFINE_string("benchmark_type", "",
                    """Benchmark type (BenchmarkType enum string).""")
flags.DEFINE_string("compilation_mode", "",
                    """Mode used during this build (e.g. opt, dbg).""")
flags.DEFINE_string("cc_flags", "", """CC flags used during this build.""")
flags.DEFINE_string("test_log_output_dir", "",
                    """Directory for benchmark results output.""")
flags.DEFINE_string(
    "test_log_output_filename", "",
    """Filename to write output benchmark results to. If the filename
                    is not specified, it will be automatically created.""")
flags.DEFINE_boolean("skip_export", False,
                     "Whether to skip exporting test results.")


def gather_build_configuration():
  build_config = test_log_pb2.BuildConfiguration()
  build_config.mode = FLAGS.compilation_mode
  # Include all flags except includes
  cc_flags = [
      flag for flag in shlex.split(FLAGS.cc_flags) if not flag.startswith("-i")
  ]
  build_config.cc_flags.extend(cc_flags)
  return build_config


def main(unused_args):
  name = FLAGS.name
  test_name = FLAGS.test_name
  test_args = " ".join(FLAGS.test_args)
  benchmark_type = FLAGS.benchmark_type
  test_results, _ = run_and_gather_logs_lib.run_and_gather_logs(
      name,
      test_name=test_name,
      test_args=test_args,
      benchmark_type=benchmark_type,
      skip_processing_logs=FLAGS.skip_export)
  if FLAGS.skip_export:
    return

  # Additional bits we receive from bazel
  test_results.build_configuration.CopyFrom(gather_build_configuration())
  # Add os.environ data to test_results.
  test_results.run_configuration.env_vars.update(os.environ)

  if not FLAGS.test_log_output_dir:
    print(text_format.MessageToString(test_results))
    return

  if FLAGS.test_log_output_filename:
    file_name = FLAGS.test_log_output_filename
  else:
    file_name = (
        name.strip("/").translate(str.maketrans("/:", "__")) +
        time.strftime("%Y%m%d%H%M%S", time.gmtime()))
  if FLAGS.test_log_output_use_tmpdir:
    tmpdir = test.get_temp_dir()
    output_path = os.path.join(tmpdir, FLAGS.test_log_output_dir, file_name)
  else:
    output_path = os.path.join(
        os.path.abspath(FLAGS.test_log_output_dir), file_name)
  json_test_results = json_format.MessageToJson(test_results)
  gfile.GFile(output_path + ".json", "w").write(json_test_results)
  tf_logging.info("Test results written to: %s" % output_path)


if __name__ == "__main__":
  app.run(main)