初始提交: Gitea 项目代码

modules/packages/terraform/state.go

@@ -0,0 +1,38 @@
+// Copyright 2026 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package terraform
+
+import (
+	"io"
+
+	"gitea.dev/modules/json"
+	"gitea.dev/modules/util"
+)
+
+// Note: this is a subset of the Terraform state file format as the full one has two forms.
+// If needed, it can be expanded in the future.
+
+type State struct {
+	Serial  uint64 `json:"serial"`
+	Lineage string `json:"lineage"`
+}
+
+// ParseState parses the required parts of Terraform state file
+func ParseState(r io.Reader) (*State, error) {
+	var state State
+	err := json.NewDecoder(r).Decode(&state)
+	if err != nil {
+		return nil, err
+	}
+	// Serial starts at 1; 0 means it wasn't set in the state file
+	if state.Serial == 0 {
+		return nil, util.NewInvalidArgumentErrorf("state serial is missing")
+	}
+	// Lineage should always be set
+	if state.Lineage == "" {
+		return nil, util.NewInvalidArgumentErrorf("state lineage is missing")
+	}
+
+	return &state, nil
+}