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内核侧配合 SDK 仓 b2872f3:兼容性不再依赖任何自造版本号。
删除三处自造号:
- ProtocolVersion(协议号)→ 改为比对主版本段(MajorVersion)
- shmVersion(共享段 header)→ 改为校验描述符个数(field_count)
- unifiedVersion(SuperBlock)→ 结构自描述,不再校验
握手契约随之调整:
HandshakeParams: protocol(int) → core_version(string)
HandshakeResult: protocol(int) → sdk_version 承担判据
内核比对 MajorVersion(meta.Version) == MajorVersion(res.SDKVersion),
跨主版本即拒并提示重编(主版本跃迁 = 破坏性变更的定义)。
为什么废除:额外的号需要人去记得升,而它没有任何结构性约束兜底,
必然腐烂。实证:ProtocolVersion 常量在多次布局变更里只升过一次,
对应的守卫测试长期失败无人察觉(期望 18/1,实际 19/2)。
新增判据:
- TestProcess_MajorVersionMismatchRejected:跨主版本被拒(testdata/badproto)
- TestProcess_SameMajorDifferentMinorAccepted:同主版本放行(新增 testdata/oldminor)
后者是 §七「1.x 内纯追加、不调新面不用重编」规约的落地 —— 若误用全等
比较,未重编的存量插件会被无谓地全部拒绝。
两条均经变异验证:改成全等比较 → 前者过/后者挂;删掉校验 → 前者挂。
120 lines
2.5 KiB
Go
120 lines
2.5 KiB
Go
//go:build ignore
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// callbackplugin 验证插件 → 内核的反向调用(51 个 core.* method 的机制)。
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package main
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import (
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"bufio"
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"encoding/json"
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"os"
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"sync"
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)
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type request struct {
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ID uint64 `json:"id,omitempty"`
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Method string `json:"method"`
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Params json.RawMessage `json:"params,omitempty"`
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}
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type response struct {
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ID uint64 `json:"id"`
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Result interface{} `json:"result,omitempty"`
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Error string `json:"error,omitempty"`
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}
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var (
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out = bufio.NewWriter(os.Stdout)
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writeMu sync.Mutex
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nextID uint64
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pending = map[uint64]chan json.RawMessage{}
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pendMu sync.Mutex
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)
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func send(v interface{}) {
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b, _ := json.Marshal(v)
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writeMu.Lock()
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out.Write(b)
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out.WriteByte('\n')
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out.Flush()
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writeMu.Unlock()
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}
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// callKernel 反向调用内核并等待应答。
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func callKernel(method string, params interface{}) json.RawMessage {
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pendMu.Lock()
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nextID++
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id := nextID
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ch := make(chan json.RawMessage, 1)
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pending[id] = ch
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pendMu.Unlock()
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var raw json.RawMessage
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if params != nil {
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b, _ := json.Marshal(params)
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raw = b
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}
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send(request{ID: id, Method: method, Params: raw})
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return <-ch
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}
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func main() {
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in := bufio.NewScanner(bufio.NewReader(os.Stdin))
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in.Buffer(make([]byte, 0, 64*1024), 1024*1024)
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for in.Scan() {
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line := make([]byte, len(in.Bytes()))
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copy(line, in.Bytes())
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var probe struct {
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ID uint64 `json:"id"`
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Method string `json:"method"`
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}
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if err := json.Unmarshal(line, &probe); err != nil {
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continue
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}
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// 内核对我们反向调用的应答
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if probe.Method == "" {
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var resp struct {
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ID uint64 `json:"id"`
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Result json.RawMessage `json:"result"`
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}
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json.Unmarshal(line, &resp)
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pendMu.Lock()
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ch, ok := pending[resp.ID]
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delete(pending, resp.ID)
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pendMu.Unlock()
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if ok {
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ch <- resp.Result
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}
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continue
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}
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var req request
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json.Unmarshal(line, &req)
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switch req.Method {
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case "handshake":
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send(response{ID: req.ID, Result: map[string]interface{}{
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"sdk_version": "1.0.0",
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"plugin_name": "cb",
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"pid": os.Getpid(),
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}})
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case "plugin.start":
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// 在独立 goroutine 里回调,避免阻塞读循环
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go func(id uint64) {
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callKernel("tool.register", map[string]interface{}{"name": "cb_tool"})
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callKernel("settings.get", map[string]interface{}{"key": "some_key"})
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send(response{ID: id})
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}(req.ID)
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case "plugin.stop":
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send(response{ID: req.ID})
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out.Flush()
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os.Exit(0)
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default:
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if req.ID != 0 {
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send(response{ID: req.ID})
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}
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}
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}
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}
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