├── Dockerfile
├── README.md
├── entrypoint.sh
└── main.py


/Dockerfile:
--------------------------------------------------------------------------------
 1 | FROM python:3.8.5-alpine3.12
 2 | 
 3 | ENV DIRECTORY /tf
 4 | 
 5 | VOLUME /tf
 6 | 
 7 | COPY entrypoint.sh /entrypoint.sh
 8 | COPY main.py /main.py
 9 | 
10 | ENTRYPOINT ["/entrypoint.sh"]


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # tfmodvercheck
 2 | 
 3 | This simple Python script will crawl your `modules.json` generated by `terraform init` command in order to verify that all modules are using the same version.
 4 | 
 5 | It's main purpose is to be used within CI/CD pipeline.
 6 | 
 7 | ## Usage
 8 | 
 9 | ### Python script
10 | 
11 | ```shell script
12 | python3 main.py PATH_TO_MODULES_JSON
13 | ```
14 | 
15 | ### Docker image
16 | 
17 | Docker image can be used to verify multiple `module.json` files within a directory.
18 | 
19 | ```shell script
20 | docker run --rm -it -v PATH_TO_YOUR_TERRAFORM_DIRECTORY:/tf docker.pkg.github.com/sysdogs/tfmodvercheck/tfmodvercheck:0.1.0
21 | ```
22 | 
23 | 


--------------------------------------------------------------------------------
/entrypoint.sh:
--------------------------------------------------------------------------------
1 | #!/bin/sh
2 | 
3 | find "${DIRECTORY}" -name 'modules.json' -exec sh -c 'python3 /main.py "$1"' _ {} \;


--------------------------------------------------------------------------------
/main.py:
--------------------------------------------------------------------------------
 1 | import argparse
 2 | import json
 3 | 
 4 | 
 5 | class Module(object):
 6 |     def __init__(self, key, source, version, module_dir):
 7 |         self.key = key
 8 |         self.source = source
 9 |         self.version = version
10 |         self.dir = module_dir
11 | 
12 | 
13 | def main():
14 |     parser = argparse.ArgumentParser()
15 |     parser.add_argument('path', type=str, help='path to modules.json')
16 |     args = parser.parse_args()
17 | 
18 |     modules = []
19 | 
20 |     with open(args.path) as stream:
21 |         input_data = json.loads(stream.read())
22 | 
23 |     for module in input_data['Modules']:
24 |         if not all(key in module for key in ('Key', 'Source', 'Version', 'Dir')):
25 |             continue
26 | 
27 |         modules.append(Module(module['Key'], module['Source'], module['Version'], module['Dir']))
28 | 
29 |     sources = list(set([module.source for module in modules]))
30 |     diverged = False
31 | 
32 |     for source in sources:
33 |         same_source_modules = [module for module in modules if module.source == source]
34 |         uniques = list({object_.version: object_ for object_ in same_source_modules}.values())
35 | 
36 |         if len(uniques) > 1:
37 |             diverged = True
38 |             print('Diverged module version detected for module: {}'.format(source))
39 |             print('Resources:')
40 | 
41 |             for res in uniques:
42 |                 print('Directory: {}, key: {}, version: {}'.format(res.dir, res.key, res.version))
43 | 
44 |     if diverged:
45 |         exit(1)
46 |     else:
47 |         exit(0)
48 | 
49 | 
50 | main()
51 | 


--------------------------------------------------------------------------------