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# Copyright 2015 Google Inc. All Rights Reserved.
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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 __future__ import absolute_import
from __future__ import division
from __future__ import unicode_literals

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


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 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.
    """
    return util.GetClient().projects_metrics.Get(
        util.GetMessages().LoggingProjectsMetricsGetRequest(
            metricName=util.CreateResourceName(
                util.GetCurrentProjectParent(), 'metrics', args.metric_name)))


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
    """,
}
