Introduce v1 API and bump Receiver version to v1

This commit bumps the Receiver API version to v1 in preparation of
the Flux GitOps GA milestone
(https://fluxcd.io/roadmap/#flux-gitops-ga-q1-2023).

We are now actively maintaining two versions of the notification API
group in parallel: v1 which currently only holds the Receiver kind and
v1beta2 for all other kinds.

Since we haven't run into this situation before, I had to change the
way we expose the API docs in ./docs/api: The directory now has
sub-directories for each active API version. Therefore we need to
change our scripts in the website repository to take this change into
account so that we expose both API group version at
https://fluxcd.io/flux/components/notification/api/.

refs #436

Signed-off-by: Max Jonas Werner <mail@makk.es>

Makefile

@@ -87,7 +87,8 @@ manifests: controller-gen
 
 # Generate API reference documentation
 api-docs: gen-crd-api-reference-docs
-	$(GEN_CRD_API_REFERENCE_DOCS) -api-dir=./api/v1beta2 -config=./hack/api-docs/config.json -template-dir=./hack/api-docs/template -out-file=./docs/api/notification.md
+	$(GEN_CRD_API_REFERENCE_DOCS) -api-dir=./api/v1beta2 -config=./hack/api-docs/config.json -template-dir=./hack/api-docs/template -out-file=./docs/api/v1beta2/notification.md
+	$(GEN_CRD_API_REFERENCE_DOCS) -api-dir=./api/v1 -config=./hack/api-docs/config.json -template-dir=./hack/api-docs/template -out-file=./docs/api/v1/notification.md
 
 # Run go mod tidy
 tidy:

api/v1/doc.go

@@ -0,0 +1,20 @@
+/*
+Copyright 2022 The Flux 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 v1 contains API Schema definitions for the notification v1 API group.
+// +kubebuilder:object:generate=true
+// +groupName=notification.toolkit.fluxcd.io
+package v1

api/v1/groupversion_info.go

@@ -0,0 +1,33 @@
+/*
+Copyright 2022 The Flux 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 v1
+
+import (
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"sigs.k8s.io/controller-runtime/pkg/scheme"
+)
+
+var (
+	// GroupVersion is group version used to register these objects.
+	GroupVersion = schema.GroupVersion{Group: "notification.toolkit.fluxcd.io", Version: "v1"}
+
+	// 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
+)

api/v1/receiver_types.go

@@ -0,0 +1,159 @@
+/*
+Copyright 2022 The Flux 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 v1
+
+import (
+	"crypto/sha256"
+	"fmt"
+	"time"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+	"github.com/fluxcd/pkg/apis/meta"
+)
+
+const (
+	ReceiverKind        string = "Receiver"
+	ReceiverWebhookPath string = "/hook/"
+	GenericReceiver     string = "generic"
+	GenericHMACReceiver string = "generic-hmac"
+	GitHubReceiver      string = "github"
+	GitLabReceiver      string = "gitlab"
+	BitbucketReceiver   string = "bitbucket"
+	HarborReceiver      string = "harbor"
+	DockerHubReceiver   string = "dockerhub"
+	QuayReceiver        string = "quay"
+	GCRReceiver         string = "gcr"
+	NexusReceiver       string = "nexus"
+	ACRReceiver         string = "acr"
+)
+
+// ReceiverSpec defines the desired state of the Receiver.
+type ReceiverSpec struct {
+	// Type of webhook sender, used to determine
+	// the validation procedure and payload deserialization.
+	// +kubebuilder:validation:Enum=generic;generic-hmac;github;gitlab;bitbucket;harbor;dockerhub;quay;gcr;nexus;acr
+	// +required
+	Type string `json:"type"`
+
+	// Interval at which to reconcile the Receiver with its Secret references.
+	// +kubebuilder:validation:Type=string
+	// +kubebuilder:validation:Pattern="^([0-9]+(\\.[0-9]+)?(ms|s|m|h))+$"
+	// +optional
+	Interval *metav1.Duration `json:"interval,omitempty"`
+
+	// Events specifies the list of event types to handle,
+	// e.g. 'push' for GitHub or 'Push Hook' for GitLab.
+	// +optional
+	Events []string `json:"events"`
+
+	// A list of resources to be notified about changes.
+	// +required
+	Resources []CrossNamespaceObjectReference `json:"resources"`
+
+	// SecretRef specifies the Secret containing the token used
+	// to validate the payload authenticity.
+	// +required
+	SecretRef meta.LocalObjectReference `json:"secretRef,omitempty"`
+
+	// Suspend tells the controller to suspend subsequent
+	// events handling for this receiver.
+	// +optional
+	Suspend bool `json:"suspend,omitempty"`
+}
+
+// ReceiverStatus defines the observed state of the Receiver.
+type ReceiverStatus struct {
+	meta.ReconcileRequestStatus `json:",inline"`
+
+	// Conditions holds the conditions for the Receiver.
+	// +optional
+	Conditions []metav1.Condition `json:"conditions,omitempty"`
+
+	// URL is the generated incoming webhook address in the format
+	// of '/hook/sha256sum(token+name+namespace)'.
+	// Deprecated: Replaced by WebhookPath.
+	// +optional
+	URL string `json:"url,omitempty"`
+
+	// WebhookPath is the generated incoming webhook address in the format
+	// of '/hook/sha256sum(token+name+namespace)'.
+	// +optional
+	WebhookPath string `json:"webhookPath,omitempty"`
+
+	// ObservedGeneration is the last observed generation of the Receiver object.
+	// +optional
+	ObservedGeneration int64 `json:"observedGeneration,omitempty"`
+}
+
+// GetConditions returns the status conditions of the object.
+func (in *Receiver) GetConditions() []metav1.Condition {
+	return in.Status.Conditions
+}
+
+// SetConditions sets the status conditions on the object.
+func (in *Receiver) SetConditions(conditions []metav1.Condition) {
+	in.Status.Conditions = conditions
+}
+
+// GetWebhookPath returns the incoming webhook path for the given token.
+func (in *Receiver) GetWebhookPath(token string) string {
+	digest := sha256.Sum256([]byte(token + in.GetName() + in.GetNamespace()))
+	return fmt.Sprintf("%s%x", ReceiverWebhookPath, digest)
+}
+
+// GetInterval returns the interval value with a default of 10m for this Receiver.
+func (in *Receiver) GetInterval() time.Duration {
+	duration := 10 * time.Minute
+	if in.Spec.Interval != nil {
+		duration = in.Spec.Interval.Duration
+	}
+
+	return duration
+}
+
+// +genclient
+// +genclient:Namespaced
+// +kubebuilder:storageversion
+// +kubebuilder:object:root=true
+// +kubebuilder:subresource:status
+// +kubebuilder:printcolumn:name="Age",type="date",JSONPath=".metadata.creationTimestamp",description=""
+// +kubebuilder:printcolumn:name="Ready",type="string",JSONPath=".status.conditions[?(@.type==\"Ready\")].status",description=""
+// +kubebuilder:printcolumn:name="Status",type="string",JSONPath=".status.conditions[?(@.type==\"Ready\")].message",description=""
+
+// Receiver is the Schema for the receivers API.
+type Receiver struct {
+	metav1.TypeMeta   `json:",inline"`
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+
+	Spec ReceiverSpec `json:"spec,omitempty"`
+	// +kubebuilder:default:={"observedGeneration":-1}
+	Status ReceiverStatus `json:"status,omitempty"`
+}
+
+// +kubebuilder:object:root=true
+
+// ReceiverList contains a list of Receivers.
+type ReceiverList struct {
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata,omitempty"`
+	Items           []Receiver `json:"items"`
+}
+
+func init() {
+	SchemeBuilder.Register(&Receiver{}, &ReceiverList{})
+}

api/v1/reference_types.go

@@ -0,0 +1,49 @@
+/*
+Copyright 2020 The Flux 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 v1
+
+// CrossNamespaceObjectReference contains enough information to let you locate the
+// typed referenced object at cluster level
+type CrossNamespaceObjectReference struct {
+	// API version of the referent
+	// +optional
+	APIVersion string `json:"apiVersion,omitempty"`
+
+	// Kind of the referent
+	// +kubebuilder:validation:Enum=Bucket;GitRepository;Kustomization;HelmRelease;HelmChart;HelmRepository;ImageRepository;ImagePolicy;ImageUpdateAutomation;OCIRepository
+	// +required
+	Kind string `json:"kind,omitempty"`
+
+	// Name of the referent
+	// +kubebuilder:validation:MinLength=1
+	// +kubebuilder:validation:MaxLength=53
+	// +required
+	Name string `json:"name"`
+
+	// Namespace of the referent
+	// +kubebuilder:validation:MinLength=1
+	// +kubebuilder:validation:MaxLength=53
+	// +kubebuilder:validation:Optional
+	// +optional
+	Namespace string `json:"namespace,omitempty"`
+
+	// MatchLabels is a map of {key,value} pairs. A single {key,value} in the matchLabels
+	// map is equivalent to an element of matchExpressions, whose key field is "key", the
+	// operator is "In", and the values array contains only "value". The requirements are ANDed.
+	// +optional
+	MatchLabels map[string]string `json:"matchLabels,omitempty"`
+}