326 lines
12 KiB
TypeScript
326 lines
12 KiB
TypeScript
/**
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* Web session model-directory and selection behavior: dynamic provider grouping,
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* provider-local catalog failures, logged-target restoration, advisory unlisted
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* models, and the prompt-assembly boundary for a running selection change.
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*/
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import { describe, expect, it } from 'vitest'
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import { Context } from 'cordis'
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import AgentRegistry, { agentEvents, installAgentLlmTarget } from '@deepseek-ai/dsh-agent'
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import type { Agent, AgentLlmTargetRef } from '@deepseek-ai/dsh-agent'
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import LlmService, { LlmAdapter, ReasoningEffortId } from '@deepseek-ai/dsh-llm'
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import type {
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GenerateOptions, LlmCallConfig, LlmModelInfo, LlmModelReasoningInfo, LlmProviderInfo,
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LlmResolvedModelInfo, StreamChunk,
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} from '@deepseek-ai/dsh-llm'
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import SessionStore from '@deepseek-ai/dsh-session'
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import type { SessionId } from '@deepseek-ai/dsh-session'
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import SystemPrompt from '@deepseek-ai/dsh-system-prompt'
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import UserInteractionService from '@deepseek-ai/dsh-user-interaction'
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import type { RpcRequest } from '@deepseek-ai/dsh-host-apiproxy/api/rpc'
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import { RpcId } from '@deepseek-ai/dsh-host-apiproxy/api/rpc'
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import type { MuxFrame } from '@deepseek-ai/dsh-host-apiproxy/api'
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import { createApiProxy } from '../src/api-proxy.ts'
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let nextRpc = 1
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function request<P>(payload: P): RpcRequest<P> {
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return { rpcId: RpcId(`models-${String(nextRpc++)}`), payload }
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}
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class CatalogAdapter extends LlmAdapter {
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constructor(
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private readonly name: string,
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private readonly models: readonly LlmModelInfo[] | Error,
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private readonly reasoning?: LlmModelReasoningInfo,
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private readonly exactError?: Error,
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) {
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super()
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}
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override providerInfo(provider: string): LlmProviderInfo {
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return { id: provider, name: this.name }
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}
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override listModels(): Promise<readonly LlmModelInfo[]> {
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return this.models instanceof Error
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? Promise.reject(this.models)
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: Promise.resolve(this.models)
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}
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override resolveModel(provider: string, model: string): Promise<LlmResolvedModelInfo> {
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if (this.exactError !== undefined) return Promise.reject(this.exactError)
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return Promise.resolve({
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provider,
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id: model,
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name: model,
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context: { contextWindow: model === 'private-preview' ? 128_000 : 64_000 },
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...this.reasoning === undefined ? {} : { reasoning: this.reasoning },
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})
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}
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override async *stream(_options: GenerateOptions): AsyncIterable<StreamChunk> {
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// Catalog tests never enter provider streaming.
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}
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}
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const REASONING: LlmModelReasoningInfo = {
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efforts: [
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{ id: ReasoningEffortId('off'), name: 'Off' },
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{ id: ReasoningEffortId('high'), name: 'High' },
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{ id: ReasoningEffortId('max'), name: 'Max' },
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],
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defaultEffort: ReasoningEffortId('high'),
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}
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async function hostContext(): Promise<Context> {
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const ctx = new Context()
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await ctx.plugin(SessionStore)
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await ctx.plugin(SystemPrompt, { persona: '' })
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await ctx.plugin(LlmService)
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await ctx.plugin(UserInteractionService)
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await ctx.plugin(AgentRegistry)
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ctx.llm.registerAdapter(['deepseek'], new CatalogAdapter('DeepSeek', [
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{ provider: 'deepseek', id: 'deepseek-chat', name: 'DeepSeek Chat' },
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{ provider: 'deepseek', id: 'deepseek-reasoner', name: 'DeepSeek Reasoner', description: 'Reasoning model' },
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], REASONING))
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ctx.llm.registerAdapter(['broken'], new CatalogAdapter('Broken Provider', new Error('catalog offline')))
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ctx.llm.registerAdapter(['metadata-broken'], new CatalogAdapter('Metadata Broken', [
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{ provider: 'metadata-broken', id: 'listed', name: 'Listed' },
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], undefined, new Error('reasoning metadata offline')))
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ctx.llm.registerAdapter(['empty'], new CatalogAdapter('Empty Provider', []))
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ctx.llm.registerAdapter(['duplicate'], new CatalogAdapter('Duplicate Provider', [
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{ provider: 'duplicate', id: 'same', name: 'Same' },
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{ provider: 'duplicate', id: 'same', name: 'Same Again' },
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]))
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return ctx
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}
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async function harness(logged?: {
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provider: string
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model: string
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reasoningEffort?: ReasoningEffortId
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}): Promise<{
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ctx: Context
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agent: Agent
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sessionId: SessionId
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}> {
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const ctx = await hostContext()
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const session = ctx.sessions.create()
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if (logged !== undefined) {
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session.append('request/header', { header: { config: logged }, reason: 'initial' })
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}
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const agent = {
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id: session.id,
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session,
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status: 'running',
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ctx,
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} as Agent
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ctx.agents.register(agent)
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return { ctx, agent, sessionId: session.id }
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}
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function expectValue<T>(response: { result: { ok: true; value: T } | { ok: false } }): T {
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if (!response.result.ok) throw new Error('expected successful response')
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return response.result.value
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}
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async function nextMetrics(
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iterator: AsyncIterator<RpcRequest<MuxFrame>>,
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): Promise<Extract<MuxFrame, { type: 'session/metrics' }>['metrics']> {
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for (;;) {
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const next = await iterator.next()
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if (next.done) throw new Error('mux ended before a metrics frame')
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if (next.value.payload.type === 'session/metrics') return next.value.payload.metrics
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}
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}
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describe('Web session model selection', () => {
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it('groups successful providers, isolates failures, and preserves an unlisted current model', async () => {
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const { ctx, sessionId } = await harness({
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provider: 'deepseek',
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model: 'private-preview',
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reasoningEffort: ReasoningEffortId('max'),
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})
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const api = createApiProxy(ctx, { provider: 'deepseek', model: 'deepseek-chat', cwd: '/tmp', workspaceRoot: '/tmp' })
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const catalog = expectValue(await api.sessions.models(request({ sessionId })))
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expect(catalog.current).toEqual({
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provider: 'deepseek',
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model: 'private-preview',
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reasoningEffort: 'max',
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})
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expect(catalog.groups).toEqual([{
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id: 'deepseek',
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name: 'DeepSeek',
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models: [
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{ id: 'deepseek-chat', name: 'DeepSeek Chat', reasoning: REASONING },
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{
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id: 'deepseek-reasoner',
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name: 'DeepSeek Reasoner',
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description: 'Reasoning model',
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reasoning: REASONING,
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},
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{
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id: 'private-preview',
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name: 'private-preview',
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unlisted: true,
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reasoning: REASONING,
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},
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],
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}])
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expect(catalog.failures).toEqual([
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{ id: 'broken', name: 'Broken Provider', message: 'catalog offline' },
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{ id: 'metadata-broken', name: 'Metadata Broken', message: 'reasoning metadata offline' },
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{
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id: 'duplicate',
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name: 'Duplicate Provider',
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message: 'adapter returned invalid or duplicate model metadata for provider "duplicate"',
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},
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])
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await ctx.fiber.dispose()
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})
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it('accepts an advisory-unlisted model, rejects an unavailable provider, and switches only after the next assembly', async () => {
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const { ctx, agent, sessionId } = await harness()
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const api = createApiProxy(ctx, { provider: 'deepseek', model: 'deepseek-chat', cwd: '/tmp', workspaceRoot: '/tmp' })
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const seed: LlmCallConfig = { provider: 'seed', model: 'seed', temperature: 0.2 }
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const signal = new AbortController().signal
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expect(expectValue(await api.sessions.models(request({ sessionId }))).current)
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.toEqual({ provider: 'deepseek', model: 'deepseek-chat' })
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expect((await ctx.systemPrompt.assemble()).variables)
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.toMatchObject({ provider: 'deepseek', model: 'deepseek-chat' })
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const selected = expectValue(await api.sessions.selectModel(request({
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sessionId,
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provider: 'deepseek',
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model: 'private-preview',
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reasoningEffort: 'max',
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})))
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expect(selected.selected).toEqual({
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provider: 'deepseek',
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model: 'private-preview',
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reasoningEffort: 'max',
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})
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await expect(agentEvents(ctx, agent).waterfall(
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'agent/request', 1, 0, signal, () => Promise.resolve(seed),
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)).resolves.toMatchObject({ provider: 'deepseek', model: 'deepseek-chat' })
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expect((await ctx.systemPrompt.assemble()).variables)
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.toMatchObject({ provider: 'deepseek', model: 'private-preview' })
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await expect(agentEvents(ctx, agent).waterfall(
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'agent/request', 1, 1, signal, () => Promise.resolve(seed),
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)).resolves.toMatchObject({
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provider: 'deepseek',
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model: 'private-preview',
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reasoningEffort: 'max',
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})
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const unsupported = await api.sessions.selectModel(request({
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sessionId,
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provider: 'deepseek',
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model: 'private-preview',
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reasoningEffort: 'medium',
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}))
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expect(unsupported.result).toMatchObject({
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ok: false,
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error: {
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code: 'model-unavailable',
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message: 'provider "deepseek" model "private-preview" does not support reasoning effort "medium"',
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},
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})
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const rejected = await api.sessions.selectModel(request({
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sessionId,
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provider: 'missing',
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model: 'model',
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}))
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expect(rejected.result).toEqual({
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ok: false,
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error: {
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code: 'model-unavailable',
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message: 'no adapter registered for provider "missing"',
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details: { provider: 'missing', model: 'model' },
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},
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})
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expect(expectValue(await api.sessions.models(request({ sessionId }))).current)
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.toEqual({ provider: 'deepseek', model: 'private-preview', reasoningEffort: 'max' })
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await ctx.fiber.dispose()
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})
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it('publishes unknown capacity immediately on selection, then the exact selected route capacity', async () => {
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const { ctx, sessionId } = await harness()
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const api = createApiProxy(ctx, { provider: 'deepseek', model: 'deepseek-chat', cwd: '/tmp', workspaceRoot: '/tmp' })
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expectValue(await api.sessions.models(request({ sessionId })))
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const controller = new AbortController()
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const iterator = api.events.mux(request({}), controller.signal)[Symbol.asyncIterator]()
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expect((await nextMetrics(iterator)).contextWindow).toBeUndefined()
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expect((await nextMetrics(iterator)).contextWindow).toBe(64_000)
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expectValue(await api.sessions.selectModel(request({
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sessionId,
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provider: 'deepseek',
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model: 'private-preview',
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})))
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expect((await nextMetrics(iterator)).contextWindow).toBeUndefined()
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expect((await nextMetrics(iterator)).contextWindow).toBe(128_000)
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controller.abort()
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await iterator.return?.()
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await ctx.fiber.dispose()
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})
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it('uses logged capacity without installing Web routing while scheduling foreign metrics', async () => {
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const ctx = await hostContext()
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const api = createApiProxy(ctx, {
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provider: 'deepseek',
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model: 'deepseek-chat',
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cwd: '/tmp',
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workspaceRoot: '/tmp',
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})
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const controller = new AbortController()
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const iterator = api.events.mux(request({}), controller.signal)[Symbol.asyncIterator]()
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const initialMetrics = nextMetrics(iterator)
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const session = ctx.sessions.create()
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expect((await initialMetrics).contextWindow).toBeUndefined()
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session.append('request/header', {
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header: { config: { provider: 'deepseek', model: 'private-preview' } },
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reason: 'change',
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})
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const foreign = {
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id: session.id,
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session,
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status: 'running',
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ctx,
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} as Agent
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const foreignTarget: AgentLlmTargetRef = {
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current: { provider: 'foreign', model: 'foreign-model' },
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assembled: undefined,
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}
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const disposeForeignTarget = installAgentLlmTarget(foreign.ctx, foreignTarget)
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const scheduledMetrics = nextMetrics(iterator)
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ctx.agents.register(foreign)
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expect((await scheduledMetrics).contextWindow).toBeUndefined()
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expect((await nextMetrics(iterator)).contextWindow).toBe(128_000)
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expect((await ctx.systemPrompt.assemble()).variables)
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.toMatchObject({ provider: 'foreign', model: 'foreign-model' })
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const seed: LlmCallConfig = { provider: 'seed', model: 'seed', temperature: 0.2 }
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const signal = new AbortController().signal
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await expect(agentEvents(ctx, foreign).waterfall(
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'agent/request', 1, 0, signal, () => Promise.resolve(seed),
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)).resolves.toMatchObject({ provider: 'foreign', model: 'foreign-model' })
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disposeForeignTarget()
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expect((await ctx.systemPrompt.assemble()).variables).not.toHaveProperty('provider')
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await expect(agentEvents(ctx, foreign).waterfall(
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'agent/request', 1, 1, signal, () => Promise.resolve(seed),
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)).resolves.toBe(seed)
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controller.abort()
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await iterator.return?.()
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await ctx.fiber.dispose()
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})
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})
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