119 lines
4 KiB
Go
119 lines
4 KiB
Go
// SPDX-License-Identifier: EUPL-1.2
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package agentic
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import (
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"context"
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core "dappco.re/go/core"
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"github.com/modelcontextprotocol/go-sdk/mcp"
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)
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// ResumeInput is the input for agentic_resume.
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//
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// input := agentic.ResumeInput{Workspace: "core/go-scm/task-42", Answer: "Use the existing queue config"}
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type ResumeInput struct {
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Workspace string `json:"workspace"` // workspace name (e.g. "core/go-scm/task-42")
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Answer string `json:"answer,omitempty"` // answer to the blocked question (written to ANSWER.md)
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Agent string `json:"agent,omitempty"` // override agent type (default: same as original)
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DryRun bool `json:"dry_run,omitempty"` // preview without executing
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}
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// ResumeOutput is the output for agentic_resume.
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//
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// out := agentic.ResumeOutput{Success: true, Workspace: "core/go-scm/task-42", Agent: "codex"}
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type ResumeOutput struct {
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Success bool `json:"success"`
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Workspace string `json:"workspace"`
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Agent string `json:"agent"`
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PID int `json:"pid,omitempty"`
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OutputFile string `json:"output_file,omitempty"`
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Prompt string `json:"prompt,omitempty"`
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}
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func (s *PrepSubsystem) registerResumeTool(server *mcp.Server) {
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mcp.AddTool(server, &mcp.Tool{
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Name: "agentic_resume",
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Description: "Resume a blocked agent workspace. Writes ANSWER.md if an answer is provided, then relaunches the agent with instructions to read it and continue.",
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}, s.resume)
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}
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func (s *PrepSubsystem) resume(ctx context.Context, _ *mcp.CallToolRequest, input ResumeInput) (*mcp.CallToolResult, ResumeOutput, error) {
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if input.Workspace == "" {
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return nil, ResumeOutput{}, core.E("resume", "workspace is required", nil)
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}
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workspaceDir := core.JoinPath(WorkspaceRoot(), input.Workspace)
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repoDir := WorkspaceRepoDir(workspaceDir)
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// Verify workspace exists
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if !fs.IsDir(core.JoinPath(repoDir, ".git")) {
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return nil, ResumeOutput{}, core.E("resume", core.Concat("workspace not found: ", input.Workspace), nil)
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}
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// Read current status
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result := ReadStatusResult(workspaceDir)
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workspaceStatus, ok := workspaceStatusValue(result)
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if !ok {
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err, _ := result.Value.(error)
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return nil, ResumeOutput{}, core.E("resume", "no status.json in workspace", err)
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}
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if workspaceStatus.Status != "blocked" && workspaceStatus.Status != "failed" && workspaceStatus.Status != "completed" {
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return nil, ResumeOutput{}, core.E("resume", core.Concat("workspace is ", workspaceStatus.Status, ", not resumable (must be blocked, failed, or completed)"), nil)
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}
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// Determine agent
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agent := workspaceStatus.Agent
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if input.Agent != "" {
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agent = input.Agent
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}
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// Write ANSWER.md if answer provided
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if input.Answer != "" {
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answerPath := workspaceAnswerPath(workspaceDir)
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content := core.Sprintf("# Answer\n\n%s\n", input.Answer)
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if writeResult := fs.Write(answerPath, content); !writeResult.OK {
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err, _ := writeResult.Value.(error)
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return nil, ResumeOutput{}, core.E("resume", "failed to write ANSWER.md", err)
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}
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}
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// Build resume prompt — inline the task and answer, no file references
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prompt := core.Concat("You are resuming previous work.\n\nORIGINAL TASK:\n", workspaceStatus.Task)
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if input.Answer != "" {
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prompt = core.Concat(prompt, "\n\nANSWER TO YOUR QUESTION:\n", input.Answer)
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}
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prompt = core.Concat(prompt, "\n\nContinue working. Read BLOCKED.md to see what you were stuck on. Commit when done.")
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if input.DryRun {
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return nil, ResumeOutput{
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Success: true,
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Workspace: input.Workspace,
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Agent: agent,
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Prompt: prompt,
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}, nil
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}
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// Spawn agent via go-process
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pid, processID, _, err := s.spawnAgent(agent, prompt, workspaceDir)
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if err != nil {
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return nil, ResumeOutput{}, err
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}
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// Update status
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workspaceStatus.Status = "running"
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workspaceStatus.PID = pid
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workspaceStatus.ProcessID = processID
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workspaceStatus.Runs++
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workspaceStatus.Question = ""
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writeStatusResult(workspaceDir, workspaceStatus)
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return nil, ResumeOutput{
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Success: true,
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Workspace: input.Workspace,
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Agent: agent,
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PID: pid,
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OutputFile: agentOutputFile(workspaceDir, agent),
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}, nil
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}
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