KeyError: 'key'

[fidiego]

I deployed several times with success, but at some point I started seeing the following error on chalice deploy --profile <profile>

Updating IAM policy.
Error: Error when deploying: 'key'

I narrowed down the issue to chalice gen-key

% chalice gen-policy --filename app.py                                                                                              ~/code/immigrant-defense-project/map-demo/backend
Traceback (most recent call last):
  File "/Users/fidiego/.virtualenvs/map-demo-backend/bin/chalice", line 11, in <module>
    sys.exit(main())
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/chalice/cli/__init__.py", line 236, in main
    return cli(obj={})
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/click/core.py", line 716, in __call__
    return self.main(*args, **kwargs)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/click/core.py", line 696, in main
    rv = self.invoke(ctx)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/click/core.py", line 1060, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/click/core.py", line 889, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/click/core.py", line 534, in invoke
    return callback(*args, **kwargs)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/click/decorators.py", line 17, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/chalice/cli/__init__.py", line 200, in gen_policy
    generated = policy.policy_from_source_code(contents)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/chalice/policy.py", line 20, in policy_from_source_code
    client_calls = get_client_calls_for_app(source_code)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/chalice/analyzer.py", line 67, in get_client_calls_for_app
    t.bind_types(parsed)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/chalice/analyzer.py", line 283, in bind_types
    self.visit(parsed_code.parsed_ast)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/chalice/analyzer.py", line 437, in visit
    return ast.NodeVisitor.visit(self, node)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ast.py", line 241, in visit
    return visitor(node)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ast.py", line 249, in generic_visit
    self.visit(item)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/chalice/analyzer.py", line 437, in visit
    return ast.NodeVisitor.visit(self, node)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ast.py", line 241, in visit
    return visitor(node)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/chalice/analyzer.py", line 314, in visit_Assign
    self.generic_visit(node)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ast.py", line 251, in generic_visit
    self.visit(value)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/chalice/analyzer.py", line 437, in visit
    return ast.NodeVisitor.visit(self, node)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ast.py", line 241, in visit
    return visitor(node)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/chalice/analyzer.py", line 369, in visit_Call
    self._infer_function_call(node)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/chalice/analyzer.py", line 395, in _infer_function_call
    child_infer.bind_types(ParsedCode(ast_node, sub_table))
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/chalice/analyzer.py", line 283, in bind_types
    self.visit(parsed_code.parsed_ast)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/chalice/analyzer.py", line 437, in visit
    return ast.NodeVisitor.visit(self, node)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ast.py", line 241, in visit
    return visitor(node)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/chalice/analyzer.py", line 417, in visit_FunctionDef
    self.visit(child)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/chalice/analyzer.py", line 437, in visit
    return ast.NodeVisitor.visit(self, node)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ast.py", line 241, in visit
    return visitor(node)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ast.py", line 249, in generic_visit
    self.visit(item)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/chalice/analyzer.py", line 437, in visit
    return ast.NodeVisitor.visit(self, node)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ast.py", line 241, in visit
    return visitor(node)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/chalice/analyzer.py", line 314, in visit_Assign
    self.generic_visit(node)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ast.py", line 251, in generic_visit
    self.visit(value)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/chalice/analyzer.py", line 437, in visit
    return ast.NodeVisitor.visit(self, node)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ast.py", line 241, in visit
    return visitor(node)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ast.py", line 251, in generic_visit
    self.visit(value)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/chalice/analyzer.py", line 437, in visit
    return ast.NodeVisitor.visit(self, node)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ast.py", line 241, in visit
    return visitor(node)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/chalice/analyzer.py", line 341, in visit_Call
    self.generic_visit(node)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ast.py", line 251, in generic_visit
    self.visit(value)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/chalice/analyzer.py", line 437, in visit
    return ast.NodeVisitor.visit(self, node)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ast.py", line 241, in visit
    return visitor(node)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/chalice/analyzer.py", line 327, in visit_Attribute
    self.generic_visit(node)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ast.py", line 251, in generic_visit
    self.visit(value)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/chalice/analyzer.py", line 437, in visit
    return ast.NodeVisitor.visit(self, node)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/ast.py", line 241, in visit
    return visitor(node)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/chalice/analyzer.py", line 307, in visit_Name
    node.inferred_type = self._symbol_table.get_inferred_type(node.id)
  File "/Users/fidiego/.virtualenvs/map-demo-backend/lib/python2.7/site-packages/chalice/analyzer.py", line 214, in get_inferred_type
    symbol = self._local_table.lookup(name)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/symtable.py", line 100, in lookup
    flags = self._table.symbols[name]
KeyError: 'key'

[jamesls]

Thanks. Could you share a snippet of your (sanitized) view function? It would help to have the code snippet that's causing the policy generator to crash so I can add a test for this.

[fidiego]

@jamesls

tree

.
├── app.py
├── config.yml
└── requirements.txt

0 directories, 3 files

app.py

import time
import logging
import os
import yaml

from chalice import Chalice


BASE_DIR = os.path.dirname(os.path.abspath('__file__'))
CONFIG_LOCATION = os.path.join(BASE_DIR, 'config.yml')


def load_conf():
    with open(CONFIG_LOCATION, 'r') as conf_file:
        configs = yaml.load(conf_file.read())
        settings = {key.upper(): value for key, value in configs.iteritems()}
    logging.info('loaded configs from {}'.format(CONFIG_LOCATION))
    return settings


SETTINGS = load_conf()


app = Chalice(app_name='backend')


@app.route('/')
def index():
    return {'hello': 'world'}


@app.route('/ping')
def ping():
    return {'success': True, 'time': int(time.time())}

[jamesls]

Perfect, thanks. Looks like this is because of the use of a dict comprehension. There's an existing issue opened for this and I'm working on a fix for this. Let's track the remaining work over in #131.