Added support for custom naming of dynamic provider resource (#7633)

Now there is not possible to change a name of dynamic provider resource without copying a code of the `pulumi.sdk.python.lib.pulumi.dynamic.dynamic.Resource` and changing the hard-coded name `"pulumi-python:dynamic:Resource"`. I successfully uses this proposal to make it possible.

Usage:
```python
class CustomResource(
    Resource, name="my-custom-provider:CustomResource"
):
   ...
```

Co-authored-by: Pat Gavlin <pgavlin@gmail.com>

CHANGELOG_PENDING.md

@@ -1,5 +1,8 @@
 ### Improvements
 
+- [sdk/python] - Add support for custom naming of dynamic provider resource.
+  [#7633](https://github.com/pulumi/pulumi/pull/7633)
+
 ### Bug Fixes
 
 - [sdk/dotnet] - Fix an exception when passing an unknown `Output` to

sdk/python/lib/pulumi/dynamic/dynamic.py

@@ -15,7 +15,7 @@
 import asyncio
 import base64
 import pickle
-from typing import Any, Optional, List, TYPE_CHECKING, no_type_check, cast
+from typing import Any, ClassVar, Optional, List, TYPE_CHECKING, no_type_check, cast
 
 import dill
 from .. import CustomResource, ResourceOptions
@@ -242,6 +242,13 @@ class Resource(CustomResource):
     Resource represents a Pulumi Resource that incorporates an inline implementation of the Resource's CRUD operations.
     """
 
+    _resource_type_name: ClassVar[str]
+
+    def __init_subclass__(cls, module: str = '', name: str = 'Resource'):
+        if module:
+            module = f'/{module}'
+        cls._resource_type_name = f'dynamic{module}:{name}'
+
     def __init__(self,
                  provider: ResourceProvider,
                  name: str,
@@ -261,4 +268,4 @@ class Resource(CustomResource):
         props = cast(dict, props)
         props[PROVIDER_KEY] = serialize_provider(provider)
 
-        super().__init__("pulumi-python:dynamic:Resource", name, props, opts)
+        super().__init__(f"pulumi-python:{self._resource_type_name}", name, props, opts)

tests/integration/dynamic/python-resource-type-name/Pulumi.yaml

@@ -0,0 +1,3 @@
+name: dynamic_resource_type_name_py
+description: A simple Python program that uses dynamic providers with custom resource type name.
+runtime: python

tests/integration/dynamic/python-resource-type-name/__main__.py

@@ -0,0 +1,21 @@
+# Copyright 2016-2021, Pulumi Corporation.  All rights reserved.
+
+from pulumi import export
+from pulumi.dynamic import CreateResult, Resource, ResourceProvider
+
+
+class CustomResource(
+    Resource, module="custom-provider", name="CustomResource"
+):
+    def __init__(self, name, opts=None):
+        super().__init__(DummyResourceProvider(), name, {}, opts)
+
+
+class DummyResourceProvider(ResourceProvider):
+    def create(self, props):
+        return CreateResult("resource-id", {})
+
+
+resource = CustomResource("resource-name")
+
+export("urn", resource.urn)

tests/integration/integration_python_test.go

@@ -416,6 +416,24 @@ func TestDynamicPythonNonMain(t *testing.T) {
 	})
 }
 
+
+// Tests custom resource type name of dynamic provider in Python.
+func TestCustomResourceTypeNameDynamicPython(t *testing.T) {
+	integration.ProgramTest(t, &integration.ProgramTestOptions{
+		Dir: filepath.Join("dynamic", "python-resource-type-name"),
+		Dependencies: []string{
+			filepath.Join("..", "..", "sdk", "python", "env", "src"),
+		},
+		ExtraRuntimeValidation: func(t *testing.T, stack integration.RuntimeValidationStackInfo) {
+			urnOut := stack.Outputs["urn"].(string)
+			urn := resource.URN(urnOut)
+			typ := urn.Type().String()
+			assert.Equal(t, "pulumi-python:dynamic/custom-provider:CustomResource", typ)
+		},
+	})
+}
+
+
 func TestPartialValuesPython(t *testing.T) {
 	if runtime.GOOS == WindowsOS {
 		t.Skip("Temporarily skipping test on Windows - pulumi/pulumi#3811")