Implementation of resource providers and resource types registration

This change implements the API functionality for registering resource providers and related child-types through the Radius API. This is the first step towards making the Radius API surface extensible. For this first step there is no consumer of this data or these APIs. Subsequent changes will consume the data and implement the user-facing functionality.

What's possible in this commit:

- CRUDL operations on resource provider and related types like:
  - resource type
  - api version (child of resource type)
  - location

Additionally, this change implements the resource provider "summary" API. The summary API provides a combined view of the most useful data from each resource provider and its children.

---

For reviewers there are a few important notes:

- Routing in UCP is complex, and error prone to work on. I abandoned the existing code and rewrote it in a form that's more native to go-chi. This was a significant improvement and made it much easier to debug the code. UCP has good integration tests so I'm not very concerned about regressions.
- This is our first use-case for child resources in Radius. I used the async controllers to implement cascading deletion.
- The "summary" API uses cached data. The async controllers for resource provider and other types update the cache. This is our first use of this pattern, but it felt right to me.

Signed-off-by: Ryan Nowak <nowakra@gmail.com>

pkg/armrpc/frontend/server/handler.go

@@ -128,6 +128,25 @@ func HandlerForController(controller ctrl.Controller, operationType v1.Operation
 	}
 }
 
+// CreateHandler creates an http.Handler for the given resource type and operation method.
+func CreateHandler(ctx context.Context, resourceType string, operationMethod v1.OperationMethod, opts ctrl.Options, factory ControllerFactoryFunc) (http.HandlerFunc, error) {
+	storageClient, err := opts.DataProvider.GetStorageClient(ctx, resourceType)
+	if err != nil {
+		return nil, err
+	}
+
+	opts.StorageClient = storageClient
+	opts.ResourceType = resourceType
+
+	ctrl, err := factory(opts)
+	if err != nil {
+		return nil, err
+	}
+
+	handler := HandlerForController(ctrl, v1.OperationType{Type: resourceType, Method: operationMethod})
+	return handler, nil
+}
+
 // RegisterHandler registers a handler for the given resource type and method. This function should only
 // be used for controllers that process a single resource type.
 func RegisterHandler(ctx context.Context, opts HandlerOptions, ctrlOpts ctrl.Options) error {

pkg/ucp/api/v20231001preview/apiversion_conversion.go

@@ -0,0 +1,65 @@
+/*
+Copyright 2023 The Radius Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v20231001preview
+
+import (
+	v1 "github.com/radius-project/radius/pkg/armrpc/api/v1"
+	"github.com/radius-project/radius/pkg/to"
+	"github.com/radius-project/radius/pkg/ucp/datamodel"
+)
+
+// ConvertTo converts from the versioned APIVersionResource resource to version-agnostic datamodel.
+func (src *APIVersionResource) ConvertTo() (v1.DataModelInterface, error) {
+	dst := &datamodel.APIVersion{
+		BaseResource: v1.BaseResource{
+			TrackedResource: v1.TrackedResource{
+				ID:   to.String(src.ID),
+				Name: to.String(src.Name),
+				Type: datamodel.APIVersionResourceType,
+
+				// NOTE: this is a child resource. It does not have a location, systemData, or tags.
+			},
+			InternalMetadata: v1.InternalMetadata{
+				UpdatedAPIVersion: Version,
+			},
+		},
+	}
+
+	dst.Properties = datamodel.APIVersionProperties{}
+
+	return dst, nil
+}
+
+// ConvertFrom converts from version-agnostic datamodel to the versioned APIVersionResource resource.
+func (dst *APIVersionResource) ConvertFrom(src v1.DataModelInterface) error {
+	dm, ok := src.(*datamodel.APIVersion)
+	if !ok {
+		return v1.ErrInvalidModelConversion
+	}
+
+	dst.ID = to.Ptr(dm.ID)
+	dst.Name = to.Ptr(dm.Name)
+	dst.Type = to.Ptr(dm.Type)
+
+	// NOTE: this is a child resource. It does not have a location, systemData, or tags.
+
+	dst.Properties = &APIVersionProperties{
+		ProvisioningState: to.Ptr(ProvisioningState(dm.InternalMetadata.AsyncProvisioningState)),
+	}
+
+	return nil
+}

pkg/ucp/api/v20231001preview/apiversion_conversion_test.go

@@ -0,0 +1,112 @@
+/*
+Copyright 2023 The Radius Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v20231001preview
+
+import (
+	"encoding/json"
+	"testing"
+
+	"github.com/Azure/azure-sdk-for-go/sdk/azcore/to"
+	v1 "github.com/radius-project/radius/pkg/armrpc/api/v1"
+	"github.com/radius-project/radius/pkg/ucp/datamodel"
+	"github.com/radius-project/radius/test/testutil"
+
+	"github.com/stretchr/testify/require"
+)
+
+func Test_APIVersion_VersionedToDataModel(t *testing.T) {
+	conversionTests := []struct {
+		filename string
+		expected *datamodel.APIVersion
+		err      error
+	}{
+		{
+			filename: "apiversion_resource.json",
+			expected: &datamodel.APIVersion{
+				BaseResource: v1.BaseResource{
+					TrackedResource: v1.TrackedResource{
+						ID:   "/planes/radius/local/providers/System.Resources/resourceProviders/Applications.Test/resourceTypes/testResources/apiVersions/2025-01-01",
+						Name: "2025-01-01",
+						Type: datamodel.APIVersionResourceType,
+					},
+					InternalMetadata: v1.InternalMetadata{
+						UpdatedAPIVersion: Version,
+					},
+				},
+				Properties: datamodel.APIVersionProperties{},
+			},
+		},
+	}
+
+	for _, tt := range conversionTests {
+		t.Run(tt.filename, func(t *testing.T) {
+			rawPayload := testutil.ReadFixture(tt.filename)
+			versioned := &APIVersionResource{}
+			err := json.Unmarshal(rawPayload, versioned)
+			require.NoError(t, err)
+
+			dm, err := versioned.ConvertTo()
+
+			if tt.err != nil {
+				require.ErrorIs(t, err, tt.err)
+			} else {
+				require.NoError(t, err)
+				require.Equal(t, tt.expected, dm)
+			}
+		})
+	}
+}
+
+func Test_APIVersion_DataModelToVersioned(t *testing.T) {
+	conversionTests := []struct {
+		filename string
+		expected *APIVersionResource
+		err      error
+	}{
+		{
+			filename: "apiversion_datamodel.json",
+			expected: &APIVersionResource{
+				ID:   to.Ptr("/planes/radius/local/providers/System.Resources/resourceProviders/Applications.Test/resourceTypes/testResources/apiVersions/2025-01-01"),
+				Type: to.Ptr(datamodel.APIVersionResourceType),
+				Name: to.Ptr("2025-01-01"),
+				Properties: &APIVersionProperties{
+					ProvisioningState: to.Ptr(ProvisioningStateSucceeded),
+				},
+			},
+		},
+	}
+
+	for _, tt := range conversionTests {
+		t.Run(tt.filename, func(t *testing.T) {
+			rawPayload := testutil.ReadFixture(tt.filename)
+			data := &datamodel.APIVersion{}
+			err := json.Unmarshal(rawPayload, data)
+			require.NoError(t, err)
+
+			versioned := &APIVersionResource{}
+
+			err = versioned.ConvertFrom(data)
+
+			if tt.err != nil {
+				require.ErrorIs(t, err, tt.err)
+			} else {
+				require.NoError(t, err)
+				require.Equal(t, tt.expected, versioned)
+			}
+		})
+	}
+}

pkg/ucp/api/v20231001preview/location_conversion.go

@@ -0,0 +1,116 @@
+/*
+Copyright 2023 The Radius Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v20231001preview
+
+import (
+	v1 "github.com/radius-project/radius/pkg/armrpc/api/v1"
+	"github.com/radius-project/radius/pkg/to"
+	"github.com/radius-project/radius/pkg/ucp/datamodel"
+)
+
+// ConvertTo converts from the versioned LocationResource resource to version-agnostic datamodel.
+func (src *LocationResource) ConvertTo() (v1.DataModelInterface, error) {
+	dst := &datamodel.Location{
+		BaseResource: v1.BaseResource{
+			TrackedResource: v1.TrackedResource{
+				ID:   to.String(src.ID),
+				Name: to.String(src.Name),
+				Type: datamodel.LocationResourceType,
+
+				// NOTE: this is a child resource. It does not have a location, systemData, or tags.
+			},
+			InternalMetadata: v1.InternalMetadata{
+				UpdatedAPIVersion: Version,
+			},
+		},
+	}
+
+	dst.Properties = datamodel.LocationProperties{
+		Address:       src.Properties.Address,
+		ResourceTypes: map[string]datamodel.LocationResourceTypeConfiguration{},
+	}
+
+	for name, value := range src.Properties.ResourceTypes {
+		dst.Properties.ResourceTypes[name] = toLocationResourceTypeDatamodel(value)
+	}
+
+	return dst, nil
+}
+
+// ConvertFrom converts from version-agnostic datamodel to the versioned LocationResource resource.
+func (dst *LocationResource) ConvertFrom(src v1.DataModelInterface) error {
+	dm, ok := src.(*datamodel.Location)
+	if !ok {
+		return v1.ErrInvalidModelConversion
+	}
+
+	dst.ID = to.Ptr(dm.ID)
+	dst.Name = to.Ptr(dm.Name)
+	dst.Type = to.Ptr(datamodel.LocationResourceType)
+
+	// NOTE: this is a child resource. It does not have a location, systemData, or tags.
+
+	dst.Properties = &LocationProperties{
+		ProvisioningState: to.Ptr(ProvisioningState(dm.InternalMetadata.AsyncProvisioningState)),
+		Address:           dm.Properties.Address,
+		ResourceTypes:     map[string]*LocationResourceType{},
+	}
+
+	for name, value := range dm.Properties.ResourceTypes {
+		dst.Properties.ResourceTypes[name] = fromLocationResourceTypeDatamodel(value)
+	}
+
+	return nil
+}
+
+func toLocationResourceTypeDatamodel(src *LocationResourceType) datamodel.LocationResourceTypeConfiguration {
+	dst := datamodel.LocationResourceTypeConfiguration{
+		APIVersions: map[string]datamodel.LocationAPIVersionConfiguration{},
+	}
+
+	for name, value := range src.APIVersions {
+		dst.APIVersions[name] = toLocationAPIVersionDatamodel(value)
+	}
+
+	return dst
+}
+
+func toLocationAPIVersionDatamodel(_ map[string]any) datamodel.LocationAPIVersionConfiguration {
+	dst := datamodel.LocationAPIVersionConfiguration{
+		// Empty for now.
+	}
+	return dst
+}
+
+func fromLocationResourceTypeDatamodel(src datamodel.LocationResourceTypeConfiguration) *LocationResourceType {
+	dst := &LocationResourceType{
+		APIVersions: map[string]map[string]any{},
+	}
+
+	for name, value := range src.APIVersions {
+		dst.APIVersions[name] = fromLocationAPIVersionDatamodel(value)
+	}
+
+	return dst
+}
+
+func fromLocationAPIVersionDatamodel(src datamodel.LocationAPIVersionConfiguration) map[string]any {
+	dst := map[string]any{
+		// Empty for now.
+	}
+	return dst
+}