110 lines
3.4 KiB
Python
Executable File
110 lines
3.4 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright 2023 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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'Parse names from specific Terraform resources and optionally check length.'
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import collections
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import enum
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import logging
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import pathlib
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import re
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import click
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BASEDIR = pathlib.Path(__file__).resolve().parents[1]
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LOGGER = logging.getLogger()
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MOD_TOKENS = [
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('NAME', r'\s*module\s*"([^"]+)"\s*\{\s*'),
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('SOURCE', r'\s*source\s*=\s*"([^"]+)"\s*'),
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('VALUE', r'\s*name\s*=\s*"([^"]+)"\s*'),
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('REST', r'(.*)'),
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]
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MOD = enum.Enum('MOD', ' '.join(name for name, _ in MOD_TOKENS))
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MOD_RE = re.compile('|'.join(f'(?:{pattern})' for _, pattern in MOD_TOKENS))
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MOD_LIMITS = {'project': 30, 'iam-service-account': 30, 'gcs': 63}
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Name = collections.namedtuple('Name', 'source name value length')
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def get_names(dir_name):
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dir_path = BASEDIR / dir_name
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for tf_path in sorted(dir_path.glob('**/*.tf')):
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if '.terraform' in str(tf_path):
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continue
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LOGGER.debug(f'file {tf_path}')
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doc = tf_path.read_text()
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name = source = None
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for m in MOD_RE.finditer(doc):
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token_type = MOD(m.lastindex)
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if token_type == MOD.REST:
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continue
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value = m.group(m.lastindex).strip()
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LOGGER.debug(f'{token_type}: {value}')
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if token_type == MOD.NAME:
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if name:
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LOGGER.debug(f'module {name} already open ({value})')
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name = value
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source = None
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elif token_type == MOD.SOURCE:
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source = value.split('/')[-1]
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LOGGER.debug(f'{name} {source}')
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elif token_type == MOD.VALUE:
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if name is None or source not in MOD_LIMITS:
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continue
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if '$' in value:
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LOGGER.debug(f'interpolation in {name} ({value}), skipping')
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else:
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yield Name(source, name, value, len(value))
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name = source = None
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@click.command()
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@click.argument('dirs', type=str, nargs=-1)
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@click.option('--prefix-length', default=7, type=int)
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@click.option('--failed-only', is_flag=True, default=False)
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def main(dirs, prefix_length=None, failed_only=False):
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'Parse names in dirs.'
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import json
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logging.basicConfig(level=logging.INFO)
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names = []
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for dir_name in dirs:
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for name in get_names(dir_name):
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names.append(name)
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names.sort()
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source_just = max(len(k) for k in MOD_LIMITS)
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name_just = max(len(n.name) for n in names)
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value_just = max(len(n.value) for n in names)
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errors = []
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for name in names:
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name_length = name.length + prefix_length
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do_print = True
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if name_length >= MOD_LIMITS[name.source]:
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flag = "✗"
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errors += [f"{name.source}:{name.name}:{name_length}"]
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else:
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flag = "✓"
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do_print = not failed_only
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if do_print:
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print(f"[{flag}] {name.source.ljust(source_just)} "
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f"{name.name.ljust(name_just)} "
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f"{name.value.ljust(value_just)} "
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f"({name_length})")
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return 0 if not errors else 1
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if __name__ == '__main__':
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main()
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