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# Copyright 2018-present MongoDB, Inc.
#
# 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.
import sys
from collections import OrderedDict as OD
try:
import yaml
import yamlordereddictloader
except ImportError:
sys.stderr.write(
"try 'pip install -r evergreen_config_generator/requirements.txt'\n")
raise
class ConfigObject(object):
def __init__(self, *args, **kwargs):
super(ConfigObject, self).__init__()
@property
def name(self):
return 'UNSET'
def to_dict(self):
return OD([('name', self.name)])
# We want legible YAML tasks:
#
# - name: debug-compile
# tags: [zlib, snappy, compression, openssl]
# commands:
# - command: shell.exec
# params:
# script: |-
# set -o errexit
# ...
#
# Write values compactly except multiline strings, which use "|" style. Write
# tag sets as lists.
class _Dumper(yamlordereddictloader.Dumper):
def __init__(self, *args, **kwargs):
super(_Dumper, self).__init__(*args, **kwargs)
self.add_representer(set, type(self).represent_set)
# Use "multi_representer" to represent all subclasses of ConfigObject.
self.add_multi_representer(ConfigObject,
type(self).represent_config_object)
def represent_scalar(self, tag, value, style=None):
if isinstance(value, (str)) and '\n' in value:
style = '|'
return super(_Dumper, self).represent_scalar(tag, value, style)
def represent_set(self, data):
return super(_Dumper, self).represent_list(sorted(data))
def represent_config_object(self, obj):
return super(_Dumper, self).represent_data(obj.to_dict())
def yaml_dump(obj):
return yaml.dump(obj, Dumper=_Dumper, default_flow_style=False)
def generate(config, path):
"""Dump config to a file as YAML.
config is a dict, preferably an OrderedDict. path is a file path.
"""
f = open(path, 'w+')
f.write('''####################################
# Evergreen configuration
#
# Generated with evergreen_config_generator from
# github.com/mongodb-labs/drivers-evergreen-tools
#
# DO NOT EDIT THIS FILE
#
####################################
''')
f.write(yaml_dump(config))
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