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picoclaw/docs/architecture/agent-refactor/pipeline-restructuring-plan.md
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sky5454 329e68e017 refactor(agent): Agent Looper refactor phase2, restructure pipeline and rename loop files to agent (#2585)
* refactor(agent): introduce interfaces for MessageBus and ChannelManager

Phase 2 of loop.go refactor — dependency inversion using adapter pattern.

- Add interfaces.MessageBus and interfaces.ChannelManager interfaces
- Create adapters/messagebus.go wrapping *bus.MessageBus
- Create adapters/channelmanager.go wrapping *channels.Manager
- Update AgentLoop to use interfaces instead of concrete types
- Update registerSharedTools to accept interfaces.MessageBus

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* refactor(agent): restructure pipeline and rename loop files

Pipeline refactoring:
- Split pipeline.go (1400 lines) into focused files:
  - pipeline_setup.go (~115 lines): SetupTurn method
  - pipeline_llm.go (~519 lines): CallLLM method
  - pipeline_execute.go (~693 lines): ExecuteTools method
  - pipeline_finalize.go (~78 lines): Finalize method
- Pipeline struct and NewPipeline remain in pipeline.go (~39 lines)

Agent file renaming:
- Rename loop_*.go to agent_*.go for consistent naming:
  - loop.go -> agent.go, loop_message.go -> agent_message.go, etc.
- Merge turn.go + turn_exec.go into turn_state.go
- Rename loop_turn.go -> turn_coord.go

Documentation:
- Update docs/pipeline-restructuring-plan.md
- Add docs/agent-rename-plan.md

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

* fix(agent): code format  fixed

* refactor(agent): code test file added/renamed

* docs(agent): update agent refactor docs

* fix(agent): fix agent hardAbortX

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
2026-04-21 10:55:50 +08:00

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Markdown

# Pipeline Restructuring Plan
## Goal
Split `agent/pipeline.go` (~1400 lines) into multiple logical files, organizing code by responsibility.
## Final File Structure
```
pkg/agent/
├── pipeline.go # Pipeline struct + NewPipeline (~39 lines)
├── pipeline_setup.go # SetupTurn method (~115 lines)
├── pipeline_llm.go # CallLLM method (~519 lines)
├── pipeline_execute.go # ExecuteTools method (~693 lines)
└── pipeline_finalize.go # Finalize method (~78 lines)
```
## Actual Line Counts
| File | Lines |
|------|-------|
| `pipeline.go` | 39 |
| `pipeline_setup.go` | 115 |
| `pipeline_llm.go` | 519 |
| `pipeline_execute.go` | 693 |
| `pipeline_finalize.go` | 78 |
| **Total** | **1444** |
## Responsibility Matrix
| File | Method | Responsibility |
|------|--------|----------------|
| `pipeline.go` | `Pipeline` struct, `NewPipeline()` | Pipeline dependency container |
| `pipeline_setup.go` | `SetupTurn()` | Turn initialization: history assembly, message building, candidate selection |
| `pipeline_llm.go` | `CallLLM()` | LLM call: PreLLM hooks, fallback, retry, AfterLLM hooks |
| `pipeline_execute.go` | `ExecuteTools()` | Tool execution: BeforeTool/ApproveTool/AfterTool hooks, media sending, steering handling |
| `pipeline_finalize.go` | `Finalize()` | Turn finalization: session save, compression, status setting |
## Relationship Between Pipeline and Turn Coordinator
```
AgentLoop (agent.go)
├── runAgentLoop() ──────────────────┐
│ │
│ ┌───────────────────────────────▼───────────────────────────────┐
│ │ Turn Coordinator (turn_coord.go) │
│ │ │
│ │ runTurn() { │
│ │ exec = pipeline.SetupTurn() │
│ │ loop { │
│ │ ctrl = pipeline.CallLLM() ──► Pipeline (pipeline_*.go) │
│ │ if ctrl == ToolLoop { │
│ │ toolCtrl = pipeline.ExecuteTools() │
│ │ } │
│ │ } │
│ │ return pipeline.Finalize() │
│ │ } │
│ └─────────────────────────────────────────────────────────────┘
└── Publish response (agent_outbound.go)
```
## Verification Results
-`go build ./pkg/agent/...` - Pass
-`go vet ./pkg/agent/...` - No warnings
-`go test ./pkg/agent/... -skip "TestSeahorse|TestGlobalSkillFileContentChange"` - Pass