80 lines
4.4 KiB
Go
80 lines
4.4 KiB
Go
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package exporters
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import (
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"encoding/json"
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"regexp"
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v1 "k8s.io/api/apps/v1"
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"sigs.k8s.io/yaml"
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)
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// Deployment removes basic stuff like namespace, status, managedBy and lastAppliedConfiguration
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func Deployment(deploy *v1.Deployment, jqcommands []string, nobuiltinmods bool, chartname string, lessOpinions bool) string {
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if !nobuiltinmods {
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// All the below do not belong in a helm chart yaml
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delete(deploy.ObjectMeta.Annotations, "kubectl.kubernetes.io/last-applied-configuration")
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delete(deploy.ObjectMeta.Annotations, "deployment.kubernetes.io/revision")
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deploy.ObjectMeta.ManagedFields = nil
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deploy.ObjectMeta.Namespace = ""
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deploy.ObjectMeta.ResourceVersion = ""
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deploy.ObjectMeta.Generation = 0
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deploy.ObjectMeta.SelfLink = ""
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deploy.ObjectMeta.UID = ""
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jqcommands = append(jqcommands, "del(.metadata.creationTimestamp)")
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jqcommands = append(jqcommands, "del(.status)")
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if !lessOpinions {
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jqcommands = append(jqcommands, ".metadata.name = \"{{ $fullName }}\"")
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jqcommands = append(jqcommands, ".spec.replicas = \"{{ .values.replicaCount }}\"")
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jqcommands = append(jqcommands, ".metadata.labels += {HELMTEMPLATEDELETEKEY: \"{{- include \\\""+chartname+".labels\\\" . | nindent 4 }}\"}")
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jqcommands = append(jqcommands, ".metadata.annotations += {HELMTEMPLATEDELETEKEY: \"{{- include \\\""+chartname+".annotations\\\" . | nindent 4 }}\"}")
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// damn, "checksum/config" works as a key in yaml, not in json!
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jqcommands = append(jqcommands, ".metadata.annotations += {checksumConfig: \"{{- include (print $.Template.BasePath \\\"/configmap.yaml\\\") . | sha256sum }}\"}")
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jqcommands = append(jqcommands, ".metadata.annotations += {checksumSecret: \"{{- include (print $.Template.BasePath \\\"/secret.yaml\\\") . | sha256sum }}\"}")
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jqcommands = append(jqcommands, ".spec.selector.matchLabels += {HELMTEMPLATEDELETEKEY: \"{{- include \\\""+chartname+".selectorLabels\\\" . | nindent 6 }}\"}")
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jqcommands = append(jqcommands, ".spec.template.metadata.labels += {HELMTEMPLATEDELETEKEY: \"{{- include \\\""+chartname+".labels\\\" . | nindent 8 }}\"}")
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jqcommands = append(jqcommands, ".spec.template.metadata.annotations += {HELMTEMPLATEDELETEKEY: \"{{- include \\\""+chartname+".annotations\\\" . | nindent 8 }}\"}")
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jqcommands = append(jqcommands, ".spec.template.spec.serviceAccountName = \"{{ include \\\""+chartname+".serviceAccountName\\\" . }}\"")
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jqcommands = append(jqcommands, ".spec.template.spec.securityContext += {HELMTEMPLATEDELETEKEY: \"{{- toYaml .podSecurityContext | nindent 8 }}\"}")
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jqcommands = append(jqcommands, ".spec.template.spec.containers[0].env += [{HELMTEMPLATEDELETEKEYANDARRAYMARKER: \"{{- range $key, $value := .Values."+chartname+".env }}\"}]")
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jqcommands = append(jqcommands, ".spec.template.spec.containers[0].env += [{ name: \"{{ $key }}\", valueFrom: {configMapKeyRef: {name: \"{{ $fullName }}\", key: \"{{ $key | quote }}\" }} }]")
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jqcommands = append(jqcommands, ".spec.template.spec.containers[0].env += [{HELMTEMPLATEDELETEKEYANDARRAYMARKER: \"{{- end }}\"}]")
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jqcommands = append(jqcommands, ".spec.template.spec.containers[0].env += [{HELMTEMPLATEDELETEKEYANDARRAYMARKER: \"{{- range $key, $value := .Values."+chartname+".secretenv }}\"}]")
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jqcommands = append(jqcommands, ".spec.template.spec.containers[0].env += [{ name: \"{{ $key }}\", valueFrom: {secretKeyRef: {name: \"{{ $fullName }}\", key: \"{{ $key | quote }}\" }} }]")
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jqcommands = append(jqcommands, ".spec.template.spec.containers[0].env += [{HELMTEMPLATEDELETEKEYANDARRAYMARKER: \"{{- end }}\"}]")
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}
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}
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// Jump to json for jq ;-)
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jsonForm, err := json.Marshal(deploy)
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if err != nil {
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panic(err.Error())
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}
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var intermediateJSONForm []byte
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var finalJSONForm []byte
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if len(jqcommands) > 0 {
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for _, command := range jqcommands {
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intermediateJSONForm = jQOnJSONByteArray(command, jsonForm)
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jsonForm = intermediateJSONForm
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}
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finalJSONForm = jsonForm
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} else {
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finalJSONForm = jsonForm
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}
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y, err := yaml.JSONToYAML(finalJSONForm)
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if err != nil {
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panic(err.Error())
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}
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ret := "{{- $fullName := include \"" + chartname + ".fullname\" . -}}\n"
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ret += "kind: Deployment\n"
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ret += "apiVersion: Apps/v1\n"
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out := string(y)
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var re = regexp.MustCompile(`HELMTEMPLATEDELETEKEY: '([^']*)'`)
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out = re.ReplaceAllString(out, "$1")
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re = regexp.MustCompile(`(?s)- HELMTEMPLATEDELETEKEYANDARRAYMARKER: '([^']*)'`)
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out = re.ReplaceAllString(out, "$1")
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ret += string(out)
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return ret
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}
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