86 lines
3.1 KiB
Python
86 lines
3.1 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2018 Objectif Libre
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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import csv
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from cliff.formatters import base
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import jsonpath_rw_ext as jp
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from oslo_log import log
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import yaml
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LOG = log.getLogger(__name__)
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class DataframeToCsvFormatter(base.ListFormatter):
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"""Cliff formatter allowing to customize CSV report content."""
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default_config = [
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('Begin', '$.begin'),
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('End', '$.end'),
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('Metric Type', '$.service'),
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('Qty', '$.volume'),
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('Cost', '$.rating'),
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('Project ID', '$.desc.project_id'),
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('Resource ID', '$.desc.resource_id'),
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('User ID', '$.desc.user_id'),
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]
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def _load_config(self, filename):
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config = self.default_config
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if filename:
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try:
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with open(filename, 'r') as fd:
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yml_config = yaml.safe_load(fd.read())
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if len(yml_config):
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config = [(list(item.keys())[0], list(item.values())[0])
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for item in yml_config]
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else:
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LOG.warning('Invalid config file {file}. Using default '
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'configuration'.format(file=filename))
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except (IOError, yaml.scanner.ScannerError) as err:
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LOG.warning('Error: {err}. Using default '
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'configuration'.format(err=err))
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self.parsers = {}
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for col, path in config:
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self.parsers[col] = jp.parse(path)
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return config
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def add_argument_group(self, parser):
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group = parser.add_argument_group('dataframe-to-csv formatter')
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group.add_argument('--format-config-file',
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type=str, dest='format_config',
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help='Config file for the dict-to-csv formatter')
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def _get_csv_row(self, config, json_item):
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row = {}
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for col, parser in self.parsers.items():
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items = parser.find(json_item)
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row[col] = items[0].value if items else ''
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return row
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def emit_list(self, column_names, data, stdout, parsed_args):
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config = self._load_config(vars(parsed_args).get('format_config'))
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self.writer = csv.DictWriter(stdout,
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fieldnames=[elem[0] for elem in config])
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self.writer.writeheader()
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for dataframe in data:
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rating_data = dataframe[3]
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for item in rating_data:
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item['begin'] = dataframe[0]
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item['end'] = dataframe[1]
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row = self._get_csv_row(config, item)
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self.writer.writerow(row)
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