Add dotted endpoint notation and additional tests

docs/sanic/request_data.md

@@ -126,3 +126,40 @@ args.get('titles') # => 'Post 1'
 
 args.getlist('titles') # => ['Post 1', 'Post 2']
 ```
+
+## Accessing the handler name with the request.endpoint attribute
+
+The `request.endpoint` attribute holds the handler's name. For instance, the below
+route will return "hello".
+
+```python
+from sanic.response import text
+from sanic import Sanic
+
+app = Sanic()
+
+@app.get("/")
+def hello(request):
+    return text(request.endpoint)
+```
+
+Or, with a blueprint it will be include both, separated by a period. For example,
+ the below route would return foo.bar:
+
+```python
+from sanic import Sanic
+from sanic import Blueprint
+from sanic.response import text
+
+
+app = Sanic(__name__)
+blueprint = Blueprint('foo')
+
+@blueprint.get('/')
+async def bar(request):
+    return text(request.endpoint)
+
+app.blueprint(blueprint)
+
+app.run(host="0.0.0.0", port=8000, debug=True)
+```

sanic/app.py

@@ -454,6 +454,13 @@ class Sanic:
         def response(handler):
             async def websocket_handler(request, *args, **kwargs):
                 request.app = self
+                if not getattr(handler, "__blueprintname__", False):
+                    request.endpoint = handler.__name__
+                else:
+                    request.endpoint = (
+                        getattr(handler, "__blueprintname__", "")
+                        + handler.__name__
+                    )
                 try:
                     protocol = request.transport.get_protocol()
                 except AttributeError:
@@ -888,6 +895,16 @@ class Sanic:
                             "handler from the router"
                         )
                     )
+                else:
+                    if not getattr(handler, "__blueprintname__", False):
+                        request.endpoint = self._build_endpoint_name(
+                            handler.__name__
+                        )
+                    else:
+                        request.endpoint = self._build_endpoint_name(
+                            getattr(handler, "__blueprintname__", ""),
+                            handler.__name__,
+                        )
 
                 # Run response handler
                 response = handler(request, *args, **kwargs)
@@ -1276,3 +1293,7 @@ class Sanic:
             logger.info("Goin' Fast @ {}://{}:{}".format(proto, host, port))
 
         return server_settings
+
+    def _build_endpoint_name(self, *parts):
+        parts = [self.name, *parts]
+        return ".".join(parts)

sanic/request.py

@@ -69,26 +69,27 @@ class Request(dict):
     """Properties of an HTTP request such as URL, headers, etc."""
 
     __slots__ = (
-        "app",
-        "headers",
-        "version",
-        "method",
+        "__weakref__",
         "_cookies",
-        "transport",
-        "body",
-        "parsed_json",
-        "parsed_args",
-        "parsed_form",
-        "parsed_files",
         "_ip",
         "_parsed_url",
-        "uri_template",
-        "stream",
+        "_port",
         "_remote_addr",
         "_socket",
-        "_port",
-        "__weakref__",
+        "app",
+        "body",
+        "endpoint",
+        "headers",
+        "method",
+        "parsed_args",
+        "parsed_files",
+        "parsed_form",
+        "parsed_json",
         "raw_url",
+        "stream",
+        "transport",
+        "uri_template",
+        "version",
     )
 
     def __init__(self, url_bytes, headers, version, method, transport):
@@ -111,6 +112,7 @@ class Request(dict):
         self.uri_template = None
         self._cookies = None
         self.stream = None
+        self.endpoint = None
 
     def __repr__(self):
         if self.method is None or not self.path:

tests/test_logo.py

@@ -5,6 +5,7 @@ from sanic.config import BASE_LOGO
 
 try:
     import uvloop  # noqa
+
     ROW = 0
 except BaseException:
     ROW = 1

tests/test_requests.py

@@ -7,6 +7,8 @@ from urllib.parse import urlparse
 
 import pytest
 
+from sanic import Sanic
+from sanic import Blueprint
 from sanic.exceptions import ServerError
 from sanic.request import DEFAULT_HTTP_CONTENT_TYPE
 from sanic.response import json, text
@@ -698,3 +700,42 @@ def test_request_form_invalid_content_type(app):
     request, response = app.test_client.post("/", json={"test": "OK"})
 
     assert request.form == {}
+
+
+def test_endpoint_basic():
+    app = Sanic()
+
+    @app.route("/")
+    def my_unique_handler(request):
+        return text("Hello")
+
+    request, response = app.test_client.get("/")
+
+    assert request.endpoint == "test_requests.my_unique_handler"
+
+
+def test_endpoint_named_app():
+    app = Sanic("named")
+
+    @app.route("/")
+    def my_unique_handler(request):
+        return text("Hello")
+
+    request, response = app.test_client.get("/")
+
+    assert request.endpoint == "named.my_unique_handler"
+
+
+def test_endpoint_blueprint():
+    bp = Blueprint("my_blueprint", url_prefix="/bp")
+
+    @bp.route("/")
+    async def bp_root(request):
+        return text("Hello")
+
+    app = Sanic("named")
+    app.blueprint(bp)
+
+    request, response = app.test_client.get("/bp")
+
+    assert request.endpoint == "named.my_blueprint.bp_root"