crd: Adding AzureResource + scaffolding and code-generation helpers

GNUmakefile

@@ -101,3 +101,7 @@ docker-push: docker-push-eds docker-push-sds docker-push-init docker-push-bookbu
 sds-root-tls:
 	@mkdir -p $(shell pwd)/bin
 	$(shell openssl req -x509 -sha256 -nodes -days 365 -newkey rsa:2048 -subj '/CN=httpbin.example.com/O=Exmaple Company Name LTD./C=US' -keyout bin/key.pem -out bin/cert.pem)
+
+.PHONY: generate-crds
+generate-crds:
+	@./crd/generate-AzureResource.sh

crd/AzureResource-example.yaml

@@ -0,0 +1,6 @@
+apiVersion: smc.osm.k8s.io/v1
+kind: AzureResource
+metadata:
+  name: some-virtual-machine-scale-set
+spec:
+  resourceid: /resource/subscriptions/e3f0/resourceGroups/mesh-rg/providers/Microsoft.Compute/virtualMachineScaleSets/baz

crd/AzureResource.yaml

@@ -0,0 +1,19 @@
+apiVersion: apiextensions.k8s.io/v1beta1
+kind: CustomResourceDefinition
+metadata:
+  name: azureresources.smc.osm.k8s.io
+spec:
+  group: smc.osm.k8s.io
+  version: v1
+  names:
+    kind: AzureResource
+    plural: azureresources
+  scope: Namespaced
+  validation:
+    openAPIV3Schema:
+      properties:
+        spec:
+          properties:
+            resourceid:
+              description: "Resource ID (UUID) of the Azure compute resource. Example: /resource/subscriptions/e3f0/resourceGroups/mesh-rg/providers/Microsoft.Compute/virtualMachineScaleSets/baz"
+              type: string

crd/README.md

@@ -0,0 +1,31 @@
+# Generating SMC CRDs
+
+This document outlines the steps necessary to generate the Go code supporting the CRDs in [this](./crd/) directory.
+
+### Assumptions
+Code generation scripts assumes:
+  - `$GOPATH` is correctly setup on this workstation
+  - this repository has been cloned in `$GOPATH/src/github.com/deislabs/smc/`
+
+### Prerequisites
+  1. Download (clone) [the code-generation tool](https://github.com/kubernetes/code-generator):
+        ```bash
+        mkdir -p $GOPATH/src/k8s.io
+        pushd $GOPATH/src/k8s.io
+        git clone [email protected]:kubernetes/code-generator.git
+        popd
+        ```
+
+### Generate Informers etc.
+  1. Run the code-eneration tool:
+        ```
+        $GOPATH/src/k8s.io/code-generator/generate-groups.sh \
+            all \
+            github.com/deislabs/smc/pkg/smc_client \
+            github.com/deislabs/smc/pkg/apis \
+            "azureresource:v1"
+        ```
+
+### Install the Custom Resource Definitions:
+  1. Install the actual CRD: `kubectl apply -f ./AzureResource.yaml`
+  1. Create a sample object to test the new CRD: `kubectl apply -f ./AzureResource-example.yaml`

crd/generate-AzureResource.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+$GOPATH/src/k8s.io/code-generator/generate-groups.sh \
+    all \
+    github.com/deislabs/smc/pkg/smc_client \
+    github.com/deislabs/smc/pkg/apis \
+    "azureresource:v1"

go.mod

@@ -24,6 +24,7 @@ require (
 	google.golang.org/grpc v1.22.1
 	gopkg.in/yaml.v2 v2.2.4 // indirect
 	k8s.io/api v0.0.0-20190614205929-e4e27c96b39a
+	k8s.io/apimachinery v0.0.0-20190612125636-6a5db36e93ad
 	k8s.io/client-go v11.0.0+incompatible
 	k8s.io/klog v1.0.0 // indirect
 )

pkg/apis/azureresource/v1/doc.go

@@ -0,0 +1,5 @@
+// +k8s:deepcopy-gen=package,register
+// +groupName=smc.osm.k8s.io
+
+// Package v1 is the v1 version of the API.
+package v1

pkg/apis/azureresource/v1/register.go

@@ -0,0 +1,45 @@
+// +k8s:deepcopy-gen=package,register
+// +groupName=smc.osm.k8s.io
+
+// Package v1 contains API Schema definitions for the AzureResource v1 API group
+package v1
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+)
+
+var (
+	// SchemeGroupVersion is group version used to register these objects
+	SchemeGroupVersion = schema.GroupVersion{
+		Group:   "smc.osm.k8s.io",
+		Version: "v1",
+	}
+
+	// SchemeBuilder is used to add go types to the GroupVersionKind scheme
+	SchemeBuilder = runtime.NewSchemeBuilder(addKnownTypes)
+
+	// AddToScheme adds all Resources to the Scheme
+	AddToScheme = SchemeBuilder.AddToScheme
+)
+
+// Kind takes an unqualified kind and returns back a Group qualified GroupKind
+func Kind(kind string) schema.GroupKind {
+	return SchemeGroupVersion.WithKind(kind).GroupKind()
+}
+
+// Resource takes an unqualified resource and returns a Group qualified GroupResource
+func Resource(resource string) schema.GroupResource {
+	return SchemeGroupVersion.WithResource(resource).GroupResource()
+}
+
+// Adds the list of known types to Scheme.
+func addKnownTypes(scheme *runtime.Scheme) error {
+	scheme.AddKnownTypes(SchemeGroupVersion,
+		&AzureResource{},
+		&AzureResourceList{},
+	)
+	metav1.AddToGroupVersion(scheme, SchemeGroupVersion)
+	return nil
+}

pkg/apis/azureresource/v1/types.go

@@ -0,0 +1,40 @@
+package v1
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+// +genclient
+// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
+
+// AzureResource is an object describing Azure specific compute, which will be included in the Service Mesh.
+type AzureResource struct {
+	metav1.TypeMeta `json:",inline"`
+
+	// +optional
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+
+	Spec AzureResourceSpec `json:"spec"`
+}
+
+// AzureResourceSpec defines the properties that uniquely identify an Azure compute resource.
+type AzureResourceSpec struct {
+	metav1.TypeMeta `json:",inline"`
+
+	// +optional
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+
+	// ResourceID is the URI identifying an unique Azure compute resource.
+	// example: /resource/subscriptions/e3f0/resourceGroups/mesh-rg/providers/Microsoft.Compute/virtualMachineScaleSets/baz
+	ResourceID string `json:"resourceid"`
+}
+
+// +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
+
+// AzureResourceList is the list of Azure resources.
+type AzureResourceList struct {
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata"`
+
+	Items []AzureResource `json:"items"`
+}