feat: add multi-model delegation (Phase 0) and context compaction (Phase 1)
Phase 0 — Multi-Model Delegation: - AgentOrchestrator wraps NativeAgent with delegate() for stateless single-turn calls to any model tier (fast/default/complex/local) - DelegationConfig maps task types (compaction, classification, etc.) to model tiers - Delegation prompts for compaction, memory extraction, classification, and tool summarisation - Per-tier usage tracking for cost visibility - Config schema: agents.delegation and agents.primary_tier Phase 1 — Context Compaction: - Token estimation (char/4 heuristic) with context window lookup - shouldCompact() threshold check against context window percentage - compactHistory() splits old/recent messages, delegates summary to fast tier, returns CompactionResult - Automatic compaction in AgentOrchestrator.process() when configured - Force-compact via orchestrator.compact() with session persistence - Session.replaceHistory() with atomic SQLite transaction - /compact TUI command with feedback on compacted token counts - Config schema: compaction.enabled, threshold_pct, keep_turns, summary_max_tokens Tests: 385 passing across 50 files (22 new tests in 2 new test files)
This commit is contained in:
@@ -0,0 +1,613 @@
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import { describe, it, expect, vi, beforeEach } from 'vitest';
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import { AgentOrchestrator } from './orchestrator.js';
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import { ModelRouter } from '../../models/router.js';
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import type { ChatResponse, ModelClient } from '../../models/types.js';
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import { ToolRegistry, ToolExecutor } from '../../tools/index.js';
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import { HookEngine } from '../../hooks/engine.js';
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import type { SubAgentRequest } from './orchestrator.js';
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describe('AgentOrchestrator', () => {
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let mockDefaultClient: ModelClient;
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let mockFastClient: ModelClient;
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let mockComplexClient: ModelClient;
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let mockRouter: ModelRouter;
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const createMockClient = (name: string, inputTokens = 100, outputTokens = 50): ModelClient => ({
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chat: vi.fn().mockResolvedValue({
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content: `${name} response`,
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stopReason: 'end_turn',
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usage: { inputTokens, outputTokens },
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}),
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});
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beforeEach(() => {
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mockDefaultClient = createMockClient('default', 100, 50);
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mockFastClient = createMockClient('fast', 50, 25);
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mockComplexClient = createMockClient('complex', 200, 100);
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mockRouter = new ModelRouter({
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default: mockDefaultClient,
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fast: mockFastClient,
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complex: mockComplexClient,
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fallbackChain: [],
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});
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});
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describe('delegate()', () => {
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it('routes to the correct tier when specified', async () => {
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const orchestrator = new AgentOrchestrator({
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modelRouter: mockRouter,
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systemPrompt: 'You are a helpful assistant.',
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primaryTier: 'default',
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delegation: {
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compaction: 'fast',
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memory_extraction: 'default',
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classification: 'complex',
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tool_summarisation: 'default',
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complex_reasoning: 'complex',
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},
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maxDelegationDepth: 10,
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});
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const result = await orchestrator.delegate({
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tier: 'fast',
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systemPrompt: 'Summarize this text',
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message: 'This is a test message',
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maxTokens: 1000,
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});
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expect(result.content).toBe('fast response');
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expect(result.tier).toBe('fast');
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});
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it('includes tools when requested', async () => {
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const mockToolRegistry = new ToolRegistry();
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const hooks = new HookEngine({
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confirm: ['*'],
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log: [],
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silent: [],
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});
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const mockToolExecutor = new ToolExecutor(mockToolRegistry, hooks);
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const mockFastChatClient = mockRouter.getClient('fast')!;
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const mockFastChatFn = vi.fn().mockResolvedValue({
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content: 'response with tools',
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stopReason: 'end_turn',
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usage: { inputTokens: 100, outputTokens: 50 },
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} as ChatResponse);
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Object.assign(mockFastChatClient, { chat: mockFastChatFn });
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const orchestrator = new AgentOrchestrator({
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modelRouter: mockRouter,
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systemPrompt: 'You are helpful.',
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primaryTier: 'default',
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delegation: {
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compaction: 'fast',
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memory_extraction: 'default',
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classification: 'complex',
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tool_summarisation: 'default',
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complex_reasoning: 'complex',
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},
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maxDelegationDepth: 10,
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toolRegistry: mockToolRegistry,
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toolExecutor: mockToolExecutor,
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});
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await orchestrator.delegate({
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tier: 'fast',
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systemPrompt: 'Use available tools',
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message: 'Help me analyze data',
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tools: true,
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});
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expect(mockFastChatFn).toHaveBeenCalled();
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});
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it('falls back to default tier when requested tier is unavailable', async () => {
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const routerWithoutComplex = new ModelRouter({
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default: mockDefaultClient,
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fast: mockFastClient,
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fallbackChain: [],
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});
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const orchestrator = new AgentOrchestrator({
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modelRouter: routerWithoutComplex,
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systemPrompt: 'You are a helpful assistant.',
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primaryTier: 'default',
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delegation: {
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compaction: 'fast',
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memory_extraction: 'default',
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classification: 'complex',
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tool_summarisation: 'default',
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complex_reasoning: 'complex',
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},
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maxDelegationDepth: 10,
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});
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const result = await orchestrator.delegate({
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tier: 'complex',
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systemPrompt: 'Analyze deeply',
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message: 'This is complex',
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});
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expect(result.content).toBe('default response');
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expect(result.tier).toBe('default');
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});
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it('tracks cumulative usage after delegate calls', async () => {
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const orchestrator = new AgentOrchestrator({
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modelRouter: mockRouter,
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systemPrompt: 'You are helpful.',
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primaryTier: 'default',
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delegation: {
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compaction: 'fast',
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memory_extraction: 'default',
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classification: 'complex',
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tool_summarisation: 'default',
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complex_reasoning: 'complex',
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},
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maxDelegationDepth: 10,
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});
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await orchestrator.delegate({
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tier: 'fast',
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systemPrompt: 'Fast task',
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message: 'Fast message',
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});
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await orchestrator.delegate({
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tier: 'complex',
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systemPrompt: 'Complex task',
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message: 'Complex message',
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});
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await orchestrator.delegate({
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tier: 'fast',
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systemPrompt: 'Another fast task',
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message: 'Another fast message',
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});
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const usage = orchestrator.getDelegationUsage();
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expect(usage.fast).toEqual({
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inputTokens: 100,
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outputTokens: 50,
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calls: 2,
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});
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expect(usage.complex).toEqual({
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inputTokens: 200,
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outputTokens: 100,
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calls: 1,
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});
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expect(usage.default).toBeUndefined();
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});
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it('tracks usage across tiers correctly', async () => {
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const orchestrator = new AgentOrchestrator({
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modelRouter: mockRouter,
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systemPrompt: 'You are helpful.',
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primaryTier: 'default',
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delegation: {
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compaction: 'fast',
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memory_extraction: 'default',
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classification: 'complex',
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tool_summarisation: 'default',
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complex_reasoning: 'complex',
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},
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maxDelegationDepth: 10,
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});
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await orchestrator.delegate({
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tier: 'fast',
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systemPrompt: 'Fast task',
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message: 'Fast message',
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});
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await orchestrator.delegate({
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tier: 'fast',
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systemPrompt: 'Another fast task',
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message: 'Another fast message',
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});
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const usage = orchestrator.getDelegationUsage();
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expect(usage.fast.inputTokens).toBe(100);
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expect(usage.fast.outputTokens).toBe(50);
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expect(usage.fast.calls).toBe(2);
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});
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it('logs delegation details with tier and token counts', async () => {
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const consoleSpy = vi.spyOn(console, 'log').mockImplementation(() => {});
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const orchestrator = new AgentOrchestrator({
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modelRouter: mockRouter,
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systemPrompt: 'You are helpful.',
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primaryTier: 'default',
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delegation: {
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compaction: 'fast',
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memory_extraction: 'default',
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classification: 'complex',
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tool_summarisation: 'default',
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complex_reasoning: 'complex',
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},
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maxDelegationDepth: 10,
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});
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await orchestrator.delegate({
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tier: 'fast',
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systemPrompt: 'Fast task',
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message: 'Fast message',
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});
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expect(consoleSpy).toHaveBeenCalledWith(
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'[Flynn:delegate] tier=fast tokens=50+25'
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);
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consoleSpy.mockRestore();
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});
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});
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describe('getDelegationTier()', () => {
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it('returns correct tier for each task type', () => {
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const orchestrator = new AgentOrchestrator({
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modelRouter: mockRouter,
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systemPrompt: 'You are helpful.',
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primaryTier: 'default',
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delegation: {
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compaction: 'fast',
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memory_extraction: 'default',
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classification: 'complex',
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tool_summarisation: 'default',
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complex_reasoning: 'complex',
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},
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maxDelegationDepth: 10,
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});
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expect(orchestrator.getDelegationTier('compaction')).toBe('fast');
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expect(orchestrator.getDelegationTier('memory_extraction')).toBe('default');
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expect(orchestrator.getDelegationTier('classification')).toBe('complex');
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expect(orchestrator.getDelegationTier('tool_summarisation')).toBe('default');
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expect(orchestrator.getDelegationTier('complex_reasoning')).toBe('complex');
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});
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it('returns tier that was explicitly configured', () => {
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const customDelegation = {
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compaction: 'local' as const,
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memory_extraction: 'fast' as const,
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classification: 'complex' as const,
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tool_summarisation: 'default' as const,
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complex_reasoning: 'local' as const,
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};
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const orchestrator = new AgentOrchestrator({
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modelRouter: mockRouter,
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systemPrompt: 'You are helpful.',
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primaryTier: 'default',
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delegation: customDelegation,
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maxDelegationDepth: 10,
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});
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expect(orchestrator.getDelegationTier('compaction')).toBe('local');
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expect(orchestrator.getDelegationTier('memory_extraction')).toBe('fast');
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expect(orchestrator.getDelegationTier('complex_reasoning')).toBe('local');
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});
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});
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describe('process()', () => {
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it('proxies to NativeAgent for user messages', async () => {
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const mockDefaultChatClient = mockRouter.getClient('default')!;
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const mockDefaultChatFn = vi.fn().mockResolvedValue({
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content: 'Agent response',
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stopReason: 'end_turn',
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usage: { inputTokens: 150, outputTokens: 75 },
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} as ChatResponse);
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Object.assign(mockDefaultChatClient, { chat: mockDefaultChatFn });
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const orchestrator = new AgentOrchestrator({
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modelRouter: mockRouter,
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systemPrompt: 'You are a helpful agent.',
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primaryTier: 'default',
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delegation: {
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compaction: 'fast',
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memory_extraction: 'default',
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classification: 'complex',
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tool_summarisation: 'default',
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complex_reasoning: 'complex',
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},
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maxDelegationDepth: 10,
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});
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const response = await orchestrator.process('Hello, agent!');
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expect(response).toBe('Agent response');
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});
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it('maintains conversation history through process()', async () => {
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const orchestrator = new AgentOrchestrator({
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modelRouter: mockRouter,
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systemPrompt: 'You are a helpful agent.',
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primaryTier: 'default',
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delegation: {
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compaction: 'fast',
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memory_extraction: 'default',
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classification: 'complex',
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tool_summarisation: 'default',
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complex_reasoning: 'complex',
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},
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maxDelegationDepth: 10,
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});
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await orchestrator.process('Hello');
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await orchestrator.process('How are you?');
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await orchestrator.process('Tell me about yourself');
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const history = orchestrator.getHistory();
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expect(history).toHaveLength(6);
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expect(history[0]).toEqual({ role: 'user', content: 'Hello' });
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expect(history[1]).toEqual({ role: 'assistant', content: 'default response' });
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expect(history[2]).toEqual({ role: 'user', content: 'How are you?' });
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expect(history[3]).toEqual({ role: 'assistant', content: 'default response' });
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expect(history[4]).toEqual({ role: 'user', content: 'Tell me about yourself' });
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expect(history[5]).toEqual({ role: 'assistant', content: 'default response' });
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});
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});
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describe('reset()', () => {
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it('clears primary agent conversation history', async () => {
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const orchestrator = new AgentOrchestrator({
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modelRouter: mockRouter,
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systemPrompt: 'You are a helpful agent.',
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primaryTier: 'default',
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delegation: {
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compaction: 'fast',
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memory_extraction: 'default',
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classification: 'complex',
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tool_summarisation: 'default',
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complex_reasoning: 'complex',
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},
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maxDelegationDepth: 10,
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});
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await orchestrator.process('Hello');
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await orchestrator.process('How are you?');
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expect(orchestrator.getHistory()).toHaveLength(4);
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orchestrator.reset();
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expect(orchestrator.getHistory()).toHaveLength(0);
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});
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it('can be called multiple times', async () => {
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const orchestrator = new AgentOrchestrator({
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modelRouter: mockRouter,
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systemPrompt: 'You are a helpful agent.',
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primaryTier: 'default',
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delegation: {
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compaction: 'fast',
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memory_extraction: 'default',
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classification: 'complex',
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tool_summarisation: 'default',
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complex_reasoning: 'complex',
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},
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maxDelegationDepth: 10,
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});
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await orchestrator.process('Hello');
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orchestrator.reset();
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expect(orchestrator.getHistory()).toHaveLength(0);
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await orchestrator.process('World');
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orchestrator.reset();
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expect(orchestrator.getHistory()).toHaveLength(0);
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});
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});
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describe('getDelegationUsage()', () => {
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it('returns copy of usage stats (doesn\'t expose internal map)', async () => {
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const orchestrator = new AgentOrchestrator({
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modelRouter: mockRouter,
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systemPrompt: 'You are helpful.',
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primaryTier: 'default',
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delegation: {
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compaction: 'fast',
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memory_extraction: 'default',
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classification: 'complex',
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tool_summarisation: 'default',
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complex_reasoning: 'complex',
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},
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maxDelegationDepth: 10,
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});
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await orchestrator.delegate({
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tier: 'fast',
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systemPrompt: 'Fast task',
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message: 'Fast message',
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});
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const usage1 = orchestrator.getDelegationUsage();
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const usage2 = orchestrator.getDelegationUsage();
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expect(usage1).toEqual(usage2);
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usage1.fast.inputTokens = 999;
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expect(usage2.fast.inputTokens).toBe(50);
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});
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it('returns empty object when no usage tracked', async () => {
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const orchestrator = new AgentOrchestrator({
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modelRouter: mockRouter,
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systemPrompt: 'You are helpful.',
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primaryTier: 'default',
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delegation: {
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compaction: 'fast',
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||||
memory_extraction: 'default',
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||||
classification: 'complex',
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||||
tool_summarisation: 'default',
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complex_reasoning: 'complex',
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},
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||||
maxDelegationDepth: 10,
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});
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const usage = orchestrator.getDelegationUsage();
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expect(usage).toEqual({});
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});
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});
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describe('getHistory()', () => {
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it('returns conversation history from primary agent', async () => {
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const orchestrator = new AgentOrchestrator({
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modelRouter: mockRouter,
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systemPrompt: 'You are a helpful agent.',
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primaryTier: 'default',
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||||
delegation: {
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||||
compaction: 'fast',
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||||
memory_extraction: 'default',
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||||
classification: 'complex',
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||||
tool_summarisation: 'default',
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||||
complex_reasoning: 'complex',
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||||
},
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||||
maxDelegationDepth: 10,
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||||
});
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||||
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await orchestrator.process('Hello');
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await orchestrator.process('How are you?');
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const history = orchestrator.getHistory();
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expect(history).toHaveLength(4);
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expect(history[0]).toEqual({ role: 'user', content: 'Hello' });
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expect(history[1]).toEqual({ role: 'assistant', content: 'default response' });
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expect(history[2]).toEqual({ role: 'user', content: 'How are you?' });
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||||
expect(history[3]).toEqual({ role: 'assistant', content: 'default response' });
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||||
});
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||||
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it('returns empty array when no history', async () => {
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const orchestrator = new AgentOrchestrator({
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modelRouter: mockRouter,
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||||
systemPrompt: 'You are a helpful agent.',
|
||||
primaryTier: 'default',
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||||
delegation: {
|
||||
compaction: 'fast',
|
||||
memory_extraction: 'default',
|
||||
classification: 'complex',
|
||||
tool_summarisation: 'default',
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||||
complex_reasoning: 'complex',
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||||
},
|
||||
maxDelegationDepth: 10,
|
||||
});
|
||||
|
||||
const history = orchestrator.getHistory();
|
||||
|
||||
expect(history).toEqual([]);
|
||||
});
|
||||
});
|
||||
|
||||
describe('setModelTier()', () => {
|
||||
it('sets model tier on primary agent', () => {
|
||||
const orchestrator = new AgentOrchestrator({
|
||||
modelRouter: mockRouter,
|
||||
systemPrompt: 'You are helpful.',
|
||||
primaryTier: 'default',
|
||||
delegation: {
|
||||
compaction: 'fast',
|
||||
memory_extraction: 'default',
|
||||
classification: 'complex',
|
||||
tool_summarisation: 'default',
|
||||
complex_reasoning: 'complex',
|
||||
},
|
||||
maxDelegationDepth: 10,
|
||||
});
|
||||
|
||||
orchestrator.setModelTier('fast');
|
||||
|
||||
expect(orchestrator.getModelTier()).toBe('fast');
|
||||
});
|
||||
|
||||
it('allows tier changes after initialization', () => {
|
||||
const orchestrator = new AgentOrchestrator({
|
||||
modelRouter: mockRouter,
|
||||
systemPrompt: 'You are helpful.',
|
||||
primaryTier: 'default',
|
||||
delegation: {
|
||||
compaction: 'fast',
|
||||
memory_extraction: 'default',
|
||||
classification: 'complex',
|
||||
tool_summarisation: 'default',
|
||||
complex_reasoning: 'complex',
|
||||
},
|
||||
maxDelegationDepth: 10,
|
||||
});
|
||||
|
||||
expect(orchestrator.getModelTier()).toBe('default');
|
||||
|
||||
orchestrator.setModelTier('complex');
|
||||
|
||||
expect(orchestrator.getModelTier()).toBe('complex');
|
||||
|
||||
orchestrator.setModelTier('fast');
|
||||
|
||||
expect(orchestrator.getModelTier()).toBe('fast');
|
||||
});
|
||||
});
|
||||
|
||||
describe('setOnToolUse()', () => {
|
||||
it('sets tool-use callback on primary agent', () => {
|
||||
const orchestrator = new AgentOrchestrator({
|
||||
modelRouter: mockRouter,
|
||||
systemPrompt: 'You are helpful.',
|
||||
primaryTier: 'default',
|
||||
delegation: {
|
||||
compaction: 'fast',
|
||||
memory_extraction: 'default',
|
||||
classification: 'complex',
|
||||
tool_summarisation: 'default',
|
||||
complex_reasoning: 'complex',
|
||||
},
|
||||
maxDelegationDepth: 10,
|
||||
});
|
||||
|
||||
const callback = vi.fn();
|
||||
|
||||
orchestrator.setOnToolUse(callback);
|
||||
|
||||
expect(orchestrator.getModelTier()).toBe('default');
|
||||
});
|
||||
|
||||
it('allows callback changes', () => {
|
||||
const orchestrator = new AgentOrchestrator({
|
||||
modelRouter: mockRouter,
|
||||
systemPrompt: 'You are helpful.',
|
||||
primaryTier: 'default',
|
||||
delegation: {
|
||||
compaction: 'fast',
|
||||
memory_extraction: 'default',
|
||||
classification: 'complex',
|
||||
tool_summarisation: 'default',
|
||||
complex_reasoning: 'complex',
|
||||
},
|
||||
maxDelegationDepth: 10,
|
||||
});
|
||||
|
||||
const callback1 = vi.fn();
|
||||
const callback2 = vi.fn();
|
||||
|
||||
orchestrator.setOnToolUse(callback1);
|
||||
|
||||
expect(orchestrator.getModelTier()).toBe('default');
|
||||
|
||||
orchestrator.setOnToolUse(callback2);
|
||||
|
||||
expect(orchestrator.getModelTier()).toBe('default');
|
||||
});
|
||||
});
|
||||
});
|
||||
Reference in New Issue
Block a user