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Added ability to use suffixes with a controller that has been already registered without suffixes. #23

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Added ability to use suffixes with a controller that has been already registered without suffixes. #23

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01e1913
Added ability to use suffixes with a controller that has been already…
ebensonwwg Jun 26, 2020
346f65b
Renamed resource=pet_resource
ebensonwwg Jul 16, 2020
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55 changes: 50 additions & 5 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -43,7 +43,7 @@ class PetSchema(Schema):
# Create Falcon web app
app = falcon.API()

class RandomPetResource:
class PetResource:
def on_get(self, req, resp):
"""A cute furry animal endpoint.
---
Expand All @@ -55,11 +55,30 @@ class RandomPetResource:
"""
pet = get_random_pet() # returns JSON
resp.media = pet

def on_get_one(self, req, resp, pet):
"""A cute furry animal endpoint.
---
description: Get a random pet
parameters:
- in: path
name: pet
required: true
schema:
type: string
responses:
200:
description: A pet to be returned
schema: PetSchema
"""
pet = get_pet(pet) # returns JSON
resp.media = pet

# create instance of resource
random_pet_resource = RandomPetResource()
pet_resource = PetResource()
# pass into `add_route` for Falcon
app.add_route("/random", random_pet_resource)
app.add_route("/random", pet_resource)
app.add_route("/{pet}", pet_resource, suffix="one")


# Create an APISpec
Expand All @@ -77,6 +96,9 @@ spec = APISpec(
spec.components.schema('Category', schema=CategorySchema)
spec.components.schema('Pet', schema=PetSchema)
# pass created resource into `path` for APISpec
# should be passed twice so the suffix is registered
# path should be called n + 1 times where n is the number of suffixes
Comment on lines +99 to +100
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Unless people read this README, they are not going to know about this convention.

Is there a better way to register resources? Would prefer to do it once versus n+1 times. Also, is there is a reason it's n+1?

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Hi, Unfortunately not, due to how the ApiSpec plugin works. It calls each resource once, meaning if you use a controller twice only one path will be chosen.

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@alysivji Any updates?

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Calling something n+1 times is a sign of bad design. What if y'all add a new suffix but forgot to add the line? Having a manual process is a recipe for disaster.

There has to be a way of fixing it I would need to look into how the path_helper works... why can't we loop n+1 times inside there to get the information you need?

I have commitments until August 4th. I can definitely help out after then.

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@alysivji Status?

spec.path(resource=random_pet_resource)
spec.path(resource=random_pet_resource)
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```

Expand All @@ -101,7 +123,30 @@ spec.to_dict()
# },
# "description": "A pet to be returned"
# }
# },
# }
# }
# },
# "/v1/client/{team}/{client_uuid:uuid}": {
# "get": {
# "description": "A cute furry animal endpoint.",
# "parameters": [
# {
# "in": "path",
# "name": "pet",
# "required": true,
# "schema": {
# "type": "string"
# }
# }
# ],
# "responses": {
# "200": {
# "schema": {
# "$ref": "#/definitions/Pet"
# },
# "description": "A pet to be returned"
# }
# }
# }
# }
# },
Expand Down Expand Up @@ -133,7 +178,7 @@ spec.to_dict()
# }
# }
# }
# },
# }
# }

spec.to_yaml()
Expand Down
30 changes: 23 additions & 7 deletions falcon_apispec/falcon_plugin.py
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Original file line number Diff line number Diff line change
Expand Up @@ -10,27 +10,43 @@ class FalconPlugin(BasePlugin):
def __init__(self, app):
super(FalconPlugin, self).__init__()
self._app = app
self.uris_returned = []

@staticmethod
def _generate_resource_uri_mapping(app):
def _generate_resource_uri_mapping(self, app):
routes_to_check = copy.copy(app._router._roots)

if len(routes_to_check) == 0:
return {}

mapping = {}
for route in routes_to_check:
uri = route.uri_template
resource = route.resource
if route.uri_template is not None and route.uri_template not in self.uris_returned:
uri = route.uri_template
resource = route.resource
method_map = route.method_map
elif route.uri_template is None and len(route.children) != 0:
routes_to_check.extend(route.children)
continue
else:
for child in route.children:
if child.uri_template not in self.uris_returned:
uri = child.uri_template
resource = child.resource
method_map = child.method_map
break

mapping[resource] = {
"uri": uri,
"methods": {}
}

if route.method_map:
for method_name, method_handler in route.method_map.items():
if method_map:
for method_name, method_handler in method_map.items():
if method_handler.__dict__.get("__module__") == "falcon.responders":
continue
mapping[resource]["methods"][method_name.lower()] = method_handler

routes_to_check.extend(route.children)
self.uris_returned.append(uri)
return mapping

def path_helper(self, operations, resource, base_path=None, **kwargs):
Expand Down
42 changes: 42 additions & 0 deletions tests/falcon_test.py
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Original file line number Diff line number Diff line change
Expand Up @@ -174,6 +174,48 @@ def on_get(self):

assert spec._paths["/hi"]["get"] == expected

def test_path_with_and_without_suffix(self, app, spec_factory):
class HelloResource:
def on_get_hello(self):
"""A greeting endpoint.
---
description: get a greeting
responses:
200:
description: said hello
"""
return "dummy"

def on_get(self):
"""A valid method.
---
description: this should pass
responses:
200:
description: said hi
"""
return "on get"

on_get_suffix_expected = {
"description": "get a greeting",
"responses": {"200": {"description": "said hello"}},
}

on_get_expected = {
"description": "this should pass",
"responses": {"200": {"description": "said hi"}},
}

hello_resource_with_suffix = HelloResource()
app.add_route("/hi", hello_resource_with_suffix)
app.add_route("/hi/{hello}", hello_resource_with_suffix, suffix="hello")
spec = spec_factory(app)
spec.path(resource=hello_resource_with_suffix)
spec.path(resource=hello_resource_with_suffix)

assert spec._paths["/hi/{hello}"]["get"] == on_get_suffix_expected
assert spec._paths["/hi"]["get"] == on_get_expected

def test_resource_without_endpoint(self, app, spec_factory):
class HelloResource:
def on_get(self, req, resp):
Expand Down