feat: restart to apply update, privileged helper, rollback

internal/domain/update/updateLayout.go

@@ -0,0 +1,63 @@
+package update
+
+import (
+	"crypto/sha256"
+	"encoding/hex"
+	"path"
+)
+
+const (
+	RestartRequestFileName = "update-restart-request.json"
+	ResultFileName         = "update-result.json"
+	HelperStatusFileName   = "update-helper.json"
+	RunningInfoFileName    = "update-running.json"
+	UpdatesDirName         = "updates"
+	HelperStatusVersion    = 1
+
+	PathUnitName    = "renewcms-update.path"
+	ServiceUnitName = "renewcms-update.service"
+	DefaultService  = "renewcms"
+	DefaultPort     = "8080"
+
+	PreviousSuffix     = ".previous"
+	PreviousTempSuffix = ".previous.tmp"
+	InstallTempSuffix  = ".new"
+	RestoreTempSuffix  = ".restore"
+	ResultTempSuffix   = ".tmp"
+	ExecutableMode     = 0o755
+	PrivateFileMode    = 0o600
+)
+
+type HelperLayout struct {
+	DataDir    string
+	BinaryPath string
+}
+
+func (l HelperLayout) UpdatesDir() string {
+	return path.Join(l.DataDir, UpdatesDirName)
+}
+
+func (l HelperLayout) StagedDir(tag string) string {
+	return path.Join(l.UpdatesDir(), tag)
+}
+
+func (l HelperLayout) ResultPath() string {
+	return path.Join(l.DataDir, ResultFileName)
+}
+
+func (l HelperLayout) ResultTempPath() string {
+	return l.ResultPath() + ResultTempSuffix
+}
+
+func (l HelperLayout) RestartRequestPath() string {
+	return path.Join(l.DataDir, RestartRequestFileName)
+}
+
+func (l HelperLayout) PreviousPath() string {
+	return l.BinaryPath + PreviousSuffix
+}
+
+func SHA256Hex(content []byte) string {
+	sum := sha256.Sum256(content)
+	return hex.EncodeToString(sum[:])
+}