create DownstreamPackage controller (#3684)

porch/Makefile

@@ -49,7 +49,7 @@ TEST_GIT_SERVER_IMAGE ?= test-git-server
 # Only enable a subset of reconcilers in porch controllers by default. Use the RECONCILERS
 # env variable to specify a specific list of reconcilers or use
 # RECONCILERS=* to enable all known reconcilers.
-ALL_RECONCILERS="rootsyncsets,remoterootsyncsets,workloadidentitybindings,rootsyncdeployments,functiondiscovery"
+ALL_RECONCILERS="rootsyncsets,remoterootsyncsets,workloadidentitybindings,rootsyncdeployments,functiondiscovery,downstreampackages"
 ifndef RECONCILERS
   ENABLED_RECONCILERS="rootsyncsets,remoterootsyncsets,workloadidentitybindings,functiondiscovery"
 else

porch/controllers/config/crd/bases/config.porch.kpt.dev_downstreampackages.yaml

@@ -0,0 +1,89 @@
+# Copyright 2022 Google LLC
+#
+# 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.
+
+---
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  annotations:
+    controller-gen.kubebuilder.io/version: v0.8.0
+  creationTimestamp: null
+  name: downstreampackages.config.porch.kpt.dev
+spec:
+  group: config.porch.kpt.dev
+  names:
+    kind: DownstreamPackage
+    listKind: DownstreamPackageList
+    plural: downstreampackages
+    singular: downstreampackage
+  scope: Namespaced
+  versions:
+  - name: v1alpha1
+    schema:
+      openAPIV3Schema:
+        description: DownstreamPackage represents an upstream and downstream porch
+          package pair. The upstream package should already exist. The DownstreamPackage
+          controller is responsible for creating the downstream package revisions
+          based on the spec.
+        properties:
+          apiVersion:
+            description: 'APIVersion defines the versioned schema of this representation
+              of an object. Servers should convert recognized schemas to the latest
+              internal value, and may reject unrecognized values. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources'
+            type: string
+          kind:
+            description: 'Kind is a string value representing the REST resource this
+              object represents. Servers may infer this from the endpoint the client
+              submits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds'
+            type: string
+          metadata:
+            type: object
+          spec:
+            description: DownstreamPackageSpec defines the desired state of DownstreamPackage
+            properties:
+              adoptionPolicy:
+                type: string
+              deletionPolicy:
+                type: string
+              downstream:
+                properties:
+                  package:
+                    type: string
+                  repo:
+                    type: string
+                type: object
+              upstream:
+                properties:
+                  package:
+                    type: string
+                  repo:
+                    type: string
+                  revision:
+                    type: string
+                type: object
+            type: object
+          status:
+            description: DownstreamPackageStatus defines the observed state of DownstreamPackage
+            type: object
+        type: object
+    served: true
+    storage: true
+    subresources:
+      status: {}
+status:
+  acceptedNames:
+    kind: ""
+    plural: ""
+  conditions: []
+  storedVersions: []

porch/controllers/downstreampackages/api/v1alpha1/downstreampackage_types.go

@@ -0,0 +1,87 @@
+// Copyright 2022 Google LLC
+//
+// 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 v1alpha1
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+//+kubebuilder:object:root=true
+//+kubebuilder:subresource:status
+
+// DownstreamPackage represents an upstream and downstream porch package pair.
+// The upstream package should already exist. The DownstreamPackage controller is
+// responsible for creating the downstream package revisions based on the spec.
+type DownstreamPackage struct {
+	metav1.TypeMeta   `json:",inline"`
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+
+	Spec   DownstreamPackageSpec   `json:"spec,omitempty"`
+	Status DownstreamPackageStatus `json:"status,omitempty"`
+}
+
+func (o *DownstreamPackage) GetSpec() *DownstreamPackageSpec {
+	if o == nil {
+		return nil
+	}
+	return &o.Spec
+}
+
+type AdoptionPolicy string
+type DeletionPolicy string
+
+const (
+	AdoptionPolicyAdoptExisting AdoptionPolicy = "adoptExisting"
+	AdoptionPolicyAdoptNone     AdoptionPolicy = "adoptNone"
+
+	DeletionPolicyDelete DeletionPolicy = "delete"
+	DeletionPolicyOrphan DeletionPolicy = "orphan"
+)
+
+// DownstreamPackageSpec defines the desired state of DownstreamPackage
+type DownstreamPackageSpec struct {
+	Upstream   *Upstream   `json:"upstream,omitempty"`
+	Downstream *Downstream `json:"downstream,omitempty"`
+
+	AdoptionPolicy AdoptionPolicy `json:"adoptionPolicy,omitempty"`
+	DeletionPolicy DeletionPolicy `json:"deletionPolicy,omitempty"`
+}
+
+type Upstream struct {
+	Repo     string `json:"repo,omitempty"`
+	Package  string `json:"package,omitempty"`
+	Revision string `json:"revision,omitempty"`
+}
+
+type Downstream struct {
+	Repo    string `json:"repo,omitempty"`
+	Package string `json:"package,omitempty"`
+}
+
+// DownstreamPackageStatus defines the observed state of DownstreamPackage
+type DownstreamPackageStatus struct{}
+
+//+kubebuilder:object:root=true
+
+// DownstreamPackageList contains a list of DownstreamPackage
+type DownstreamPackageList struct {
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata,omitempty"`
+	Items           []DownstreamPackage `json:"items"`
+}
+
+func init() {
+	SchemeBuilder.Register(&DownstreamPackage{}, &DownstreamPackageList{})
+}

porch/controllers/downstreampackages/api/v1alpha1/groupversion_info.go

@@ -0,0 +1,36 @@
+// Copyright 2022 Google LLC
+//
+// 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 v1alpha1 contains API Schema definitions for the config.porch.kpt.dev v1alpha1 API group
+// +kubebuilder:object:generate=true
+// +groupName=config.porch.kpt.dev
+package v1alpha1
+
+import (
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"sigs.k8s.io/controller-runtime/pkg/scheme"
+)
+
+//go:generate go run sigs.k8s.io/controller-tools/cmd/[email protected] object object:headerFile="../../../../scripts/boilerplate.go.txt" paths="./..."
+
+var (
+	// GroupVersion is group version used to register these objects
+	GroupVersion = schema.GroupVersion{Group: "config.porch.kpt.dev", Version: "v1alpha1"}
+
+	// SchemeBuilder is used to add go types to the GroupVersionKind scheme
+	SchemeBuilder = &scheme.Builder{GroupVersion: GroupVersion}
+
+	// AddToScheme adds the types in this group-version to the given scheme.
+	AddToScheme = SchemeBuilder.AddToScheme
+)