add lua script support (#106)

* add lua script support

* fix unit test

* change lua function name

* change lua function name

* change to CustomHealth

Author: zreigz

.dockerignore

@@ -0,0 +1,3 @@
+# More info: https://docs.docker.com/engine/reference/builder/#dockerignore-file
+# Ignore build and test binaries.
+bin/

Makefile

@@ -9,7 +9,13 @@ IMG ?= deployment-agent:latest
 
 ENVTEST ?= $(shell which setup-envtest)
 
+## Location to install dependencies to
+LOCALBIN ?= $(shell pwd)/bin
+$(LOCALBIN):
+	mkdir -p $(LOCALBIN)
+
 ENVTEST_K8S_VERSION := 1.28.3
+CONTROLLER_GEN ?= $(LOCALBIN)/controller-gen
 
 include tools.mk
 
@@ -22,9 +28,22 @@ PRE = --ensure
 ##@ General
 
 .PHONY: help
-help: ## show help
+help: ## Display this help.
 	@awk 'BEGIN {FS = ":.*##"; printf "\nUsage:\n  make \033[36m<target>\033[0m\n"} /^[a-zA-Z_0-9-]+:.*?##/ { printf "  \033[36m%-15s\033[0m %s\n", $$1, $$2 } /^##@/ { printf "\n\033[1m%s\033[0m\n", substr($$0, 5) } ' $(MAKEFILE_LIST)
 
+controller-gen: ## Download controller-gen locally if necessary.
+	$(call go-get-tool,$(CONTROLLER_GEN),sigs.k8s.io/controller-tools/cmd/controller-gen@v0.11.3)
+
+##@ Development
+
+.PHONY: manifests
+manifests: controller-gen ## Generate WebhookConfiguration, ClusterRole and CustomResourceDefinition objects.
+	$(CONTROLLER_GEN) rbac:roleName=manager-role crd webhook paths="./..." output:crd:artifacts:config=config/crd/bases
+
+.PHONY: generate
+generate: controller-gen ## Generate code containing DeepCopy, DeepCopyInto, and DeepCopyObject method implementations.
+	$(CONTROLLER_GEN) object:headerFile="hack/boilerplate.go.txt" paths="./..."
+
 ##@ Run
 
 .PHONY: run
@@ -86,3 +105,17 @@ envtest: --tool ## Download and install setup-envtest in the $GOPATH/bin
 .PHONY: mockery
 mockery: TOOL = mockery
 mockery: --tool
+
+# go-get-tool will 'go get' any package $2 and install it to $1.
+PROJECT_DIR := $(shell dirname $(abspath $(lastword $(MAKEFILE_LIST))))
+define go-get-tool
+@[ -f $(1) ] || { \
+set -e ;\
+TMP_DIR=$$(mktemp -d) ;\
+cd $$TMP_DIR ;\
+go mod init tmp ;\
+echo "Downloading $(2)" ;\
+GOBIN=$(PROJECT_DIR)/bin go install $(2) ;\
+rm -rf $$TMP_DIR ;\
+}
+endef

PROJECT

@@ -0,0 +1,20 @@
+# Code generated by tool. DO NOT EDIT.
+# This file is used to track the info used to scaffold your project
+# and allow the plugins properly work.
+# More info: https://book.kubebuilder.io/reference/project-config.html
+domain: plural.sh
+layout:
+- go.kubebuilder.io/v4
+projectName: kubebilder
+repo: github.com/pluralsh/deployment-operator
+resources:
+- api:
+    crdVersion: v1
+    namespaced: true
+  controller: true
+  domain: plural.sh
+  group: deployments
+  kind: CustomHealth
+  path: github.com/pluralsh/deployment-operator/api/v1alpha1
+  version: v1alpha1
+version: "3"

api/v1alpha1/common_types.go

@@ -0,0 +1,27 @@
+package v1alpha1
+
+type ConditionType string
+
+func (c ConditionType) String() string {
+	return string(c)
+}
+
+const (
+	ReadyConditionType ConditionType = "Ready"
+)
+
+type ConditionReason string
+
+func (c ConditionReason) String() string {
+	return string(c)
+}
+
+const (
+	ReadyConditionReason ConditionReason = "Ready"
+)
+
+type ConditionMessage string
+
+func (c ConditionMessage) String() string {
+	return string(c)
+}

api/v1alpha1/customhealth_types.go

@@ -0,0 +1,66 @@
+/*
+Copyright 2024.
+
+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 (
+	"k8s.io/apimachinery/pkg/api/meta"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+// CustomHealthSpec defines the desired state of CustomHealth
+type CustomHealthSpec struct {
+	Script string `json:"script,omitempty"`
+}
+
+// CustomHealthStatus defines the observed state of CustomHealth
+type CustomHealthStatus struct {
+	// Represents the observations of a HealthConvert current state.
+	// +patchMergeKey=type
+	// +patchStrategy=merge
+	// +listType=map
+	// +listMapKey=type
+	Conditions []metav1.Condition `json:"conditions,omitempty" patchStrategy:"merge" patchMergeKey:"type"`
+}
+
+//+kubebuilder:object:root=true
+//+kubebuilder:subresource:status
+
+// CustomHealth is the Schema for the HealthConverts API
+type CustomHealth struct {
+	metav1.TypeMeta   `json:",inline"`
+	metav1.ObjectMeta `json:"metadata,omitempty"`
+
+	Spec   CustomHealthSpec   `json:"spec,omitempty"`
+	Status CustomHealthStatus `json:"status,omitempty"`
+}
+
+//+kubebuilder:object:root=true
+
+// CustomHealthList contains a list of CustomHealth
+type CustomHealthList struct {
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata,omitempty"`
+	Items           []CustomHealth `json:"items"`
+}
+
+func init() {
+	SchemeBuilder.Register(&CustomHealth{}, &CustomHealthList{})
+}
+
+func (c *CustomHealth) SetCondition(condition metav1.Condition) {
+	meta.SetStatusCondition(&c.Status.Conditions, condition)
+}

api/v1alpha1/groupversion_info.go

@@ -0,0 +1,36 @@
+/*
+Copyright 2024.
+
+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 deployments v1alpha1 API group
+// +kubebuilder:object:generate=true
+// +groupName=deployments.plural.sh
+package v1alpha1
+
+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: "deployments.plural.sh", 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
+)