101 lines
2.8 KiB
Markdown
101 lines
2.8 KiB
Markdown
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# Implementation Plan 4 — c.Process() Primitive (Section 17)
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> Depends on: Plan 2 (Registry), Plan 3 (Actions).
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> go-process v0.7.0 update required.
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## Phase A: Update go-process to v0.7.0 Core API
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**Repo:** core/go-process
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1. Change `NewService` factory to return `core.Result` (not `(any, error)`)
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2. Add `Register` function matching `WithService` signature
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3. Remove `ProcessRegister` bridge from core/agent
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4. Register process Actions during OnStartup:
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```go
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func (s *Service) OnStartup(ctx context.Context) core.Result {
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c := s.Core()
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c.Action("process.run", s.handleRun)
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c.Action("process.start", s.handleStart)
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c.Action("process.kill", s.handleKill)
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return core.Result{OK: true}
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}
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```
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## Phase B: Add Process Primitive to core/go
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**New file in core/go:** `process.go`
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```go
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type Process struct {
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core *Core
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}
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func (c *Core) Process() *Process { return c.process }
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func (p *Process) Run(ctx context.Context, command string, args ...string) Result {
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return p.core.Action("process.run").Run(ctx, NewOptions(
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Option{Key: "command", Value: command},
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Option{Key: "args", Value: args},
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))
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}
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func (p *Process) RunIn(ctx context.Context, dir, command string, args ...string) Result {
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return p.core.Action("process.run").Run(ctx, NewOptions(
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Option{Key: "command", Value: command},
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Option{Key: "args", Value: args},
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Option{Key: "dir", Value: dir},
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))
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}
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```
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No new dependencies in core/go — Process is just Action sugar.
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## Phase C: Migrate core/agent proc.go
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Replace standalone helpers with Core methods:
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```go
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// Current: proc.go standalone with ensureProcess() hack
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out, err := runCmd(ctx, dir, "git", "log")
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// Target: method on PrepSubsystem using Core
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out := s.core.Process().RunIn(ctx, dir, "git", "log")
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```
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Delete `proc.go`. Delete `ensureProcess()`. Delete `ProcessRegister`.
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## Phase D: Replace syscall.Kill calls
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5 call sites in core/agent use `syscall.Kill(pid, 0)` and `syscall.Kill(pid, SIGTERM)`.
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Replace with:
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```go
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processIsRunning(st.ProcessID, st.PID) // already in proc.go
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processKill(st.ProcessID, st.PID) // already in proc.go
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```
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These use `process.Get(id).IsRunning()` when ProcessID is available.
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## Phase E: Atomic File Writes (P4-10)
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Add to core/go `fs.go`:
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```go
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func (m *Fs) WriteAtomic(p, content string) Result {
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tmp := p + ".tmp." + strconv.FormatInt(time.Now().UnixNano(), 36)
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if r := m.Write(tmp, content); !r.OK { return r }
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if err := os.Rename(tmp, m.path(p)); err != nil {
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m.Delete(tmp)
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return Result{err, false}
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}
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return Result{OK: true}
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}
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```
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Migrate `writeStatus` in core/agent to use `WriteAtomic`. Fixes P4-9 (51 race sites).
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## Resolves
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I7 (no c.Process), P9-1 (os/exec in core), P4-9 (status.json race), P4-10 (Fs.Write not atomic), P11-2 (unsafe.Pointer Fs bypass — add Fs.NewUnrestricted instead).
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