Adds ResourceProvider type to EnvoyProxy API

Signed-off-by: danehans <daneyonhansen@gmail.com>

api/config/v1alpha1/envoygateway_types.go

@@ -57,7 +57,9 @@ type Gateway struct {
 // Provider defines the desired configuration of a provider.
 // +union
 type Provider struct {
-	// Type is the type of provider to use.
+	// Type is the type of provider to use. Supported types are:
+	//
+	//   * Kubernetes: A provider that provides runtime configuration via the Kubernetes API.
 	//
 	// +unionDiscriminator
 	Type ProviderType `json:"type"`
@@ -74,17 +76,6 @@ type Provider struct {
 	File *FileProvider `json:"file,omitempty"`
 }
 
-// ProviderType defines the types of providers supported by Envoy Gateway.
-type ProviderType string
-
-const (
-	// ProviderTypeKubernetes defines the "Kubernetes" provider.
-	ProviderTypeKubernetes ProviderType = "Kubernetes"
-
-	// ProviderTypeFile defines the "File" provider.
-	ProviderTypeFile ProviderType = "File"
-)
-
 // KubernetesProvider defines configuration for the Kubernetes provider.
 type KubernetesProvider struct {
 	// TODO: Add config as use cases are better understood.

api/config/v1alpha1/envoyproxy_types.go

@@ -23,8 +23,55 @@ type EnvoyProxy struct {
 
 // EnvoyProxySpec defines the desired state of EnvoyProxy.
 type EnvoyProxySpec struct {
-	// INSERT ADDITIONAL SPEC FIELDS - define desired state of cluster.
-	// Important: Run "make" to regenerate code after modifying this file.
+	// Provider defines the desired resource provider and provider-specific configuration.
+	// If unspecified, the "Kubernetes" resource provider is used with default configuration
+	// parameters.
+	//
+	// +optional
+	Provider *ResourceProvider `json:"provider,omitempty"`
+}
+
+// ResourceProvider defines the desired state of a resource provider.
+// +union
+type ResourceProvider struct {
+	// Type is the type of resource provider to use. A resource provider provides
+	// infrastructure resources for running the data plane, e.g. Envoy proxy, and
+	// optional auxiliary control planes. Supported types are:
+	//
+	//   * Kubernetes: Provides infrastructure resources for running the data plane,
+	//                 e.g. Envoy proxy, and optional auxiliary control planes.
+	//
+	// +unionDiscriminator
+	Type ProviderType `json:"type"`
+	// Kubernetes defines the desired state of the Kubernetes resource provider.
+	// Kubernetes provides infrastructure resources for running the data plane,
+	// e.g. Envoy proxy, and optional auxiliary control planes. If unspecified
+	// and type is "Kubernetes", default settings for managed Kubernetes resources
+	// are applied.
+	//
+	// +optional
+	Kubernetes *KubernetesResourceProvider `json:"kubernetes,omitempty"`
+}
+
+// KubernetesResourceProvider defines configuration for the Kubernetes resource
+// provider.
+type KubernetesResourceProvider struct {
+	// EnvoyDeployment defines the desired state of the Envoy deployment resource.
+	// If unspecified, default settings for the manged Envoy deployment resource
+	// are applied.
+	//
+	// +optional
+	EnvoyDeployment *EnvoyDeployment `json:"envoyDeployment,omitempty"`
+}
+
+// EnvoyDeployment defines the desired state of the Envoy deployment resource.
+type EnvoyDeployment struct {
+	// Replicas is the number of desired Envoy proxy pods. Defaults to 1.
+	//
+	// +optional
+	Replicas *int32 `json:"replicas,omitempty"`
+
+	// TODO: Expose config as use cases are better understood, e.g. labels.
 }
 
 // EnvoyProxyStatus defines the observed state of EnvoyProxy

api/config/v1alpha1/shared_types.go

@@ -0,0 +1,19 @@
+// Copyright Envoy Gateway Authors
+// SPDX-License-Identifier: Apache-2.0
+// The full text of the Apache license is available in the LICENSE file at
+// the root of the repo.
+
+package v1alpha1
+
+// ProviderType defines the types of providers supported by Envoy Gateway.
+//
+// +kubebuilder:validation:Enum=Kubernetes
+type ProviderType string
+
+const (
+	// ProviderTypeKubernetes defines the "Kubernetes" provider.
+	ProviderTypeKubernetes ProviderType = "Kubernetes"
+
+	// ProviderTypeFile defines the "File" provider.
+	ProviderTypeFile ProviderType = "File"
+)

internal/provider/kubernetes/config/crd/bases/config.gateway.envoyproxy.io_envoyproxies.yaml

@@ -34,6 +34,44 @@ spec:
             type: object
           spec:
             description: EnvoyProxySpec defines the desired state of EnvoyProxy.
+            properties:
+              provider:
+                description: Provider defines the desired resource provider and provider-specific
+                  configuration. If unspecified, the "Kubernetes" resource provider
+                  is used with default configuration parameters.
+                properties:
+                  kubernetes:
+                    description: Kubernetes defines the desired state of the Kubernetes
+                      resource provider. Kubernetes provides infrastructure resources
+                      for running the data plane, e.g. Envoy proxy, and optional auxiliary
+                      control planes. If unspecified and type is "Kubernetes", default
+                      settings for managed Kubernetes resources are applied.
+                    properties:
+                      envoyDeployment:
+                        description: EnvoyDeployment defines the desired state of
+                          the Envoy deployment resource. If unspecified, default settings
+                          for the manged Envoy deployment resource are applied.
+                        properties:
+                          replicas:
+                            description: Replicas is the number of desired Envoy proxy
+                              pods. Defaults to 1.
+                            format: int32
+                            type: integer
+                        type: object
+                    type: object
+                  type:
+                    description: "Type is the type of resource provider to use. A
+                      resource provider provides infrastructure resources for running
+                      the data plane, e.g. Envoy proxy, and optional auxiliary control
+                      planes. Supported types are: \n * Kubernetes: Provides infrastructure
+                      resources for running the data plane, e.g. Envoy proxy, and
+                      optional auxiliary control planes."
+                    enum:
+                    - Kubernetes
+                    type: string
+                required:
+                - type
+                type: object
             type: object
           status:
             description: EnvoyProxyStatus defines the observed state of EnvoyProxy