f-11: code: move start and stop metadata #11

Signed-off-by: GnomeZworc <nicolas.boufidjeline@g3e.fr>

internal/metadata/handle.go

@@ -0,0 +1,26 @@
+package metadata
+
+import (
+	"git.g3e.fr/syonad/two/pkg/systemd"
+	"github.com/dgraph-io/badger/v4"
+)
+
+func StartMetadata(config NoCloudConfig, db *badger.DB, dryrun bool) {
+	service, _ := systemd.New()
+	defer service.Close()
+
+	LoadNcCloudInDB(config, db)
+	if !dryrun {
+		service.Start("metadata@" + config.Name)
+	}
+}
+
+func StopMetadata(vm_name string, db *badger.DB, dryrun bool) {
+	service, _ := systemd.New()
+	defer service.Close()
+
+	UnLoadNoCloudInDB(vm_name, db)
+	if !dryrun {
+		service.Stop("metadata@" + vm_name)
+	}
+}

internal/metadata/render.go

@@ -0,0 +1,46 @@
+package metadata
+
+import (
+	"bytes"
+	"embed"
+	"text/template"
+
+	"git.g3e.fr/syonad/two/pkg/db/kv"
+	"github.com/dgraph-io/badger/v4"
+)
+
+//go:embed templates/*.tmpl
+var templateFS embed.FS
+
+func RenderConfig(path string, cfg NoCloudConfig) (string, error) {
+	tpl, err := template.ParseFS(templateFS, path)
+	if err != nil {
+		return "", err
+	}
+
+	var buf bytes.Buffer
+	if err := tpl.Execute(&buf, cfg); err != nil {
+		return "", err
+	}
+
+	return buf.String(), nil
+}
+
+func LoadNcCloudInDB(config NoCloudConfig, db *badger.DB) {
+	meta_data, _ := RenderConfig("templates/meta-data.tmpl", config)
+	user_data, _ := RenderConfig("templates/user-data.tmpl", config)
+	network_config, _ := RenderConfig("templates/network-config.tmpl", config)
+	vendor_data, _ := RenderConfig("templates/vendor-data.tmpl", config)
+
+	kv.AddInDB(db, "metadata/"+config.Name+"/meta-data", meta_data)
+	kv.AddInDB(db, "metadata/"+config.Name+"/user-data", user_data)
+	kv.AddInDB(db, "metadata/"+config.Name+"/network-config", network_config)
+	kv.AddInDB(db, "metadata/"+config.Name+"/vendor-data", vendor_data)
+	kv.AddInDB(db, "metadata/"+config.Name+"/vpc", config.VpcName)
+	kv.AddInDB(db, "metadata/"+config.Name+"/bind_ip", config.BindIP)
+	kv.AddInDB(db, "metadata/"+config.Name+"/bind_port", config.BindPort)
+}
+
+func UnLoadNoCloudInDB(vm_name string, db *badger.DB) {
+	kv.DeleteInDB(db, "metadata/"+vm_name)
+}

internal/metadata/struct.go

@@ -18,3 +18,12 @@ type ServerConfig struct {
 	ConfFile string
 	VmName   string
 }
+
+type NoCloudConfig struct {
+	VpcName  string
+	BindIP   string
+	BindPort string
+	Name     string
+	Password string
+	SSHKEY   string
+}

internal/metadata/templates/meta-data.tmpl

@@ -0,0 +1,2 @@
+instance-id: {{ .Name }}
+local-hostname: {{ .Name }}

internal/metadata/templates/network-config.tmpl

@@ -0,0 +1,4 @@
+version: 2
+ethernets:
+  eth0:
+    dhcp4: true

internal/metadata/templates/user-data.tmpl

@@ -0,0 +1,3 @@
+#!/bin/sh
+
+passwd -d root

internal/metadata/templates/vendor-data.tmpl

@@ -0,0 +1,13 @@
+#cloud-config
+users:
+  - name: syonad
+    lock_passwd: false
+    gecos: alpine Cloud User
+    groups: [adm, wheel]
+    doas:
+      - permit nopass syonad
+    sudo: ["ALL=(ALL) NOPASSWD:ALL"]
+    shell: /bin/ash
+    passwd: "{{ .Password }}"
+    ssh_authorized_keys:
+      - "{{ .SSHKEY }}"