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#
# 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
#
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"""'logging metrics describe' command."""

from googlecloudsdk.api_lib.logging import util
from googlecloudsdk.calliope import base
from googlecloudsdk.core import properties


class Describe(base.DescribeCommand):
  """Shows the definition of a logs-based metric."""

  @staticmethod
  def Args(parser):
    """Register flags for this command."""
    parser.add_argument(
        'metric_name', help='The name of the metric.')

  def Collection(self):
    return 'logging.metrics'

  @util.HandleHttpError
  def Run(self, args):
    """This is what gets called when the user runs this command.

    Args:
      args: an argparse namespace. All the arguments that were provided to this
        command invocation.

    Returns:
      The specified metric with its description and configured filter.
    """
    client = self.context['logging_client_v1beta3']
    messages = self.context['logging_messages_v1beta3']
    project = properties.VALUES.core.project.Get(required=True)

    return client.projects_metrics.Get(
        messages.LoggingProjectsMetricsGetRequest(
            metricsId=args.metric_name, projectsId=project))


Describe.detailed_help = {
    'DESCRIPTION': """\
        Shows the definition of a logs-based metric.
    """,
    'EXAMPLES': """\
        To show the definition of a metric called high_severity_count, run:

          $ {command} high_severity_count
    """,
}
