Error fetching terraform module in blast-radius

[NeerajJ-addweb]

I am trying to create a graph using blast-radius but it's throwing below error, can anyone please help me.
I think it's unable to fetch terraform module.
Thank you

` * Serving Flask app "blastradius.server.server" (lazy loading)

• Environment: production
  WARNING: This is a development server. Do not use it in a production deployment.
  Use a production WSGI server instead.
• Debug mode: off
• Running on http://0.0.0.0:4004/ (Press CTRL+C to quit)
  127.0.0.1 - - [02/Sep/2020 15:56:46] "GET / HTTP/1.1" 200 -
  127.0.0.1 - - [02/Sep/2020 15:56:46] "GET /static/js/jquery.slim.min.js HTTP/1.1" 200 -
  127.0.0.1 - - [02/Sep/2020 15:56:46] "GET /static/js/bootstrap.min.js HTTP/1.1" 200 -
  127.0.0.1 - - [02/Sep/2020 15:56:46] "GET /static/js/d3.v4.js HTTP/1.1" 200 -
  127.0.0.1 - - [02/Sep/2020 15:56:46] "GET /static/js/fontawesome-all.min.js HTTP/1.1" 200 -
  127.0.0.1 - - [02/Sep/2020 15:56:46] "GET /static/js/blast-radius.js HTTP/1.1" 200 -
  127.0.0.1 - - [02/Sep/2020 15:56:46] "GET /static/js/d3-tip.js HTTP/1.1" 200 -
  127.0.0.1 - - [02/Sep/2020 15:56:46] "GET /static/js/categories.js HTTP/1.1" 200 -
  127.0.0.1 - - [02/Sep/2020 15:56:46] "GET /static/js/selectize.js HTTP/1.1" 200 -
  127.0.0.1 - - [02/Sep/2020 15:56:46] "GET /static/css/bootstrap.min.css HTTP/1.1" 200 -
  127.0.0.1 - - [02/Sep/2020 15:56:46] "GET /static/css/selectize.css HTTP/1.1" 200 -
  127.0.0.1 - - [02/Sep/2020 15:56:46] "GET /static/js/svg-pan-zoom.js HTTP/1.1" 200 -
  127.0.0.1 - - [02/Sep/2020 15:56:46] "GET /static/css/style.css HTTP/1.1" 200 -
  127.0.0.1 - - [02/Sep/2020 15:56:46] "GET /favicon.ico HTTP/1.1" 404 -
  [2020-09-02 15:56:53,479] ERROR in app: Exception on /graph.svg [GET]
  Traceback (most recent call last):
  File "/home/harsh896/.local/lib/python3.8/site-packages/blastradius/handlers/dot.py", line 455, in _module
  return m.groupdict()['module']
  AttributeError: 'NoneType' object has no attribute 'groupdict'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/flask/app.py", line 2446, in wsgi_app
response = self.full_dispatch_request()
File "/usr/lib/python3/dist-packages/flask/app.py", line 1951, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/usr/lib/python3/dist-packages/flask/app.py", line 1820, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "/usr/lib/python3/dist-packages/flask/_compat.py", line 39, in reraise
raise value
File "/usr/lib/python3/dist-packages/flask/app.py", line 1949, in full_dispatch_request
rv = self.dispatch_request()
File "/usr/lib/python3/dist-packages/flask/app.py", line 1935, in dispatch_request
return self.view_functionsrule.endpoint
File "/home/harsh896/.local/lib/python3.8/site-packages/blastradius/server/server.py", line 36, in graph_svg
dot = DotGraph('', file_contents=run_tf_graph())
File "/home/harsh896/.local/lib/python3.8/site-packages/blastradius/handlers/dot.py", line 56, in init
self.nodes.append(DotNode(e.target))
File "/home/harsh896/.local/lib/python3.8/site-packages/blastradius/handlers/dot.py", line 415, in init
self.module = DotNode._module(self.label) # for module groupings. 'root' or 'module.foo.module.bar'
File "/home/harsh896/.local/lib/python3.8/site-packages/blastradius/handlers/dot.py", line 457, in _module
raise Exception("None: ", label)
Exception: ('None: ', '[root] module.services (close)')
127.0.0.1 - - [02/Sep/2020 15:56:53] "GET /graph.svg HTTP/1.1" 500 -
`

[dwilliams782]

I have the same issue, guessing it'll be a tf0.13 issue

[NandoTheessen]

Same issue, terraform 0.13.5

[dano0b]

I have it with Terraform v0.14.9

[jryan128]

I have the issue with Terraform v0.15.3

[caiconkhicon]

I have a same issue with 0.13.6 :( So sad I just found this great project which may help me visualizing Terraform graph.

[alen-z]

Same error.

AttributeError: 'NoneType' object has no attribute 'groupdict' in blastradius/handlers/dot.py.

[KieranP]

Same here on v1.0.4:

[2021-08-17 11:18:46,902] ERROR in app: Exception on /graph.svg [GET]
Traceback (most recent call last):
  File "/usr/local/lib/python3.9/site-packages/blastradius/handlers/dot.py", line 455, in _module
    return m.groupdict()['module']
AttributeError: 'NoneType' object has no attribute 'groupdict'

[krystian1981]

I have the issue with Terraform v0.15.5

[xiaopeng163]

same issue with terraform v1.2.9

[2022-09-23 22:09:27,966] ERROR in app: Exception on /graph.svg [GET]
Traceback (most recent call last):
  File "/home/vagrant/venv/terraform/lib/python3.8/site-packages/blastradius/handlers/dot.py", line 455, in _module
    return m.groupdict()['module']
AttributeError: 'NoneType' object has no attribute 'groupdict'

During handling of the above exception, another exception occurred:

[Ianyliu]

Not sure if this will help, but you can try using my version of Blast Radius which I've tried to increase compatibility for.

Source Code:
Blast Radius Fork

Installation:
python3 -m pip install git+https://github.com/Ianyliu/blast-radius-fork

docker run --rm -it -p 5000:5000 \ -v $(pwd):/data:ro \ --security-opt apparmor:unconfined \ --cap-add=SYS_ADMIN \ ianyliu/blast-radius-fork

Docker image:

[xiaopeng163]

Not sure if this will help, but you can try using my version of Blast Radius which I've tried to increase compatibility for.

Source Code: Blast Radius Fork

Installation: python3 -m pip install git+https://github.com/Ianyliu/blast-radius-fork

docker run --rm -it -p 5000:5000 \ -v $(pwd):/data:ro \ --security-opt apparmor:unconfined \ --cap-add=SYS_ADMIN \ ianyliu/blast-radius-fork

Docker image:

got error like this

[2022-09-25 07:48:26,018] ERROR in app: Exception on /graph.svg [GET]
Traceback (most recent call last):
  File "/home/vagrant/venv/terraform/lib/python3.8/site-packages/lark/parsers/lalr_parser.py", line 59, in get_action
    return states[state][token.type]
KeyError: '__ANON_3'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/vagrant/venv/terraform/lib/python3.8/site-packages/flask/app.py", line 2077, in wsgi_app
    response = self.full_dispatch_request()
  File "/home/vagrant/venv/terraform/lib/python3.8/site-packages/flask/app.py", line 1525, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/home/vagrant/venv/terraform/lib/python3.8/site-packages/flask/app.py", line 1523, in full_dispatch_request
    rv = self.dispatch_request()
  File "/home/vagrant/venv/terraform/lib/python3.8/site-packages/flask/app.py", line 1509, in dispatch_request
    return self.ensure_sync(self.view_functions[rule.endpoint])(**req.view_args)
  File "/home/vagrant/venv/terraform/lib/python3.8/site-packages/blastradius/server/server.py", line 134, in graph_svg
    dot = initalizeDotGraph(content=run_tf_graph(),
  File "/home/vagrant/venv/terraform/lib/python3.8/site-packages/blastradius/server/server.py", line 215, in initalizeDotGraph
    tf = Terraform(os.getcwd())
  File "/home/vagrant/venv/terraform/lib/python3.8/site-packages/blastradius/handlers/terraform.py", line 29, in __init__
    self.config = hcl.load(config_io)
  File "/home/vagrant/venv/terraform/lib/python3.8/site-packages/hcl2/api.py", line 9, in load
    return loads(file.read())
  File "/home/vagrant/venv/terraform/lib/python3.8/site-packages/hcl2/api.py", line 18, in loads
    return hcl2.parse(text + "\n")
  File "/home/vagrant/venv/terraform/lib/python3.8/site-packages/lark/lark.py", line 464, in parse
    return self.parser.parse(text, start=start)
  File "/home/vagrant/venv/terraform/lib/python3.8/site-packages/lark/parser_frontends.py", line 115, in parse
    return self._parse(token_stream, start)
  File "/home/vagrant/venv/terraform/lib/python3.8/site-packages/lark/parser_frontends.py", line 63, in _parse
    return self.parser.parse(input, start, *args)
  File "/home/vagrant/venv/terraform/lib/python3.8/site-packages/lark/parsers/lalr_parser.py", line 35, in parse
    return self.parser.parse(*args)
  File "/home/vagrant/venv/terraform/lib/python3.8/site-packages/lark/parsers/lalr_parser.py", line 88, in parse
    action, arg = get_action(token)
  File "/home/vagrant/venv/terraform/lib/python3.8/site-packages/lark/parsers/lalr_parser.py", line 66, in get_action
    raise UnexpectedToken(token, expected, state=state, puppet=puppet)
lark.exceptions.UnexpectedToken: Unexpected token Token('__ANON_3', 'output') at line 302, column 3.
Expected one of: 
        * __ANON_0
        * __ANON_2
        * __ANON_1

127.0.0.1 - - [25/Sep/2022 07:48:26] "GET /graph.svg HTTP/1.1" 500 -

[Ianyliu]

Do you happen to know if you're using HCL or HCL2?
I've updated one of the dependencies, python-hcl2 to see if it will help.
The problem occurred when parsing HCL files, and it's not the first time someone told me about it.
Since I'm not extremely familiar with HCL parsing either, I'm still trying to wrap my head around it

[xiaopeng163]

another finding, it will work without any issue if there are no modules imported. @Ianyliu

[Ianyliu]

Hi @xiaopeng163,
Could you try testing out this version of Blast-Radius (fork)?

It should resolve the problems for remote modules
I integrated changes from Jrc356/blast-radius

The changes are on my dev branch, so to install it you would have to put:
pip install -U git+https://github.com/Ianyliu/blast-radius-fork@dev

If you use Docker and would like me to create a dev or testing image, please let me know as well

[xiaopeng163]

@Ianyliu seems working with the remote module, for example

module "vpc" {
  source  = "terraform-aws-modules/vpc/aws"
  version = ">= 3.14.2"

  name           = var.aws_vpc_name
  cidr           = var.aws_vpc_cidr
  azs            = var.aws_availability_zones
  public_subnets = [cidrsubnet(var.aws_vpc_cidr, 8, 1)]

  create_igw = true

  manage_default_security_group  = true
  default_security_group_egress  = var.aws_sg_egress_rules
  default_security_group_ingress = var.aws_sg_ingress_rules
}

but to be honest, this is not readable, seems it shows all resources defined in the module?

btw, the code still doesn't work for local modules like:

module "my_vpc" {

  source = "./modules/vpc"
  
  aws_vpc_cidr_block = var.aws_vpc_cidr_block

}

output "vpc_id" {
  
  value = module.my_vpc.id

}