feat: 添加 Bedrock API 客户端及 API 层增强

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

src/services/api/__tests__/bedrockClient.test.ts

@@ -0,0 +1,139 @@
+/**
+ * Tests for the Bedrock anthropic_beta body-vs-header workaround
+ * (see src/services/api/bedrockClient.ts and anthropics/claude-code#49238).
+ */
+import { describe, expect, test } from 'bun:test'
+import { AnthropicBedrock } from '@anthropic-ai/bedrock-sdk'
+import { BedrockClient } from '../bedrockClient.js'
+
+type Captured = {
+  url: string
+  method: string
+  headers: Record<string, string>
+  body: string
+}
+
+function makeCaptureFetch(): {
+  fetch: typeof fetch
+  get(): Captured | null
+} {
+  let captured: Captured | null = null
+  const capture = async (
+    input: URL | RequestInfo,
+    init?: RequestInit,
+  ): Promise<Response> => {
+    const req = new Request(input as RequestInfo, init)
+    const body = await req.clone().text()
+    const headers: Record<string, string> = {}
+    req.headers.forEach((v, k) => {
+      headers[k.toLowerCase()] = v
+    })
+    captured = { url: req.url, method: req.method, headers, body }
+    const streamBody =
+      'event: message_start\ndata: {"type":"message_start","message":{"id":"m","type":"message","role":"assistant","content":[],"model":"x","stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":0,"output_tokens":0}}}\n\nevent: message_stop\ndata: {"type":"message_stop"}\n\n'
+    return new Response(streamBody, {
+      status: 200,
+      headers: { 'content-type': 'text/event-stream' },
+    })
+  }
+  // SDK only calls the fetch function form, never the static `preconnect` that
+  // Bun/Node's `typeof fetch` declares. Cast is safe (mirrors openai/client.ts).
+  return { fetch: capture as unknown as typeof fetch, get: () => captured }
+}
+
+const BEDROCK_ARGS = {
+  awsRegion: 'us-east-1',
+  awsAccessKey: 'AKIAIOSFODNN7EXAMPLE',
+  awsSecretKey: 'wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY',
+}
+const REQUEST_PARAMS = {
+  model: 'anthropic.claude-opus-4-7',
+  max_tokens: 10,
+  messages: [{ role: 'user' as const, content: 'hi' }],
+  betas: ['interleaved-thinking-2025-05-14', 'effort-2025-11-24'],
+  stream: true as const,
+}
+
+async function dispatch(client: AnthropicBedrock): Promise<void> {
+  try {
+    const stream = await client.beta.messages.create(REQUEST_PARAMS)
+    for await (const _ of stream) {
+      /* drain */
+    }
+  } catch {
+    /* ignore: only the captured request shape matters */
+  }
+}
+
+describe('BedrockClient.buildRequest body.anthropic_beta cleanup', () => {
+  test('BUG REPRO: unmodified AnthropicBedrock puts anthropic_beta in body', async () => {
+    const { fetch: captureFetch, get } = makeCaptureFetch()
+    const client = new AnthropicBedrock({
+      ...BEDROCK_ARGS,
+      fetch: captureFetch,
+    })
+    await dispatch(client)
+    const c = get()
+    expect(c).not.toBeNull()
+    const body = JSON.parse(c!.body) as Record<string, unknown>
+    expect('anthropic_beta' in body).toBe(true)
+    expect(body.anthropic_beta).toEqual([
+      'interleaved-thinking-2025-05-14',
+      'effort-2025-11-24',
+    ])
+  })
+
+  test('FIX: BedrockClient strips anthropic_beta from body', async () => {
+    const { fetch: captureFetch, get } = makeCaptureFetch()
+    const client = new BedrockClient({ ...BEDROCK_ARGS, fetch: captureFetch })
+    await dispatch(client)
+    const c = get()
+    expect(c).not.toBeNull()
+    const body = JSON.parse(c!.body) as Record<string, unknown>
+    expect('anthropic_beta' in body).toBe(false)
+  })
+
+  test('FIX preserves anthropic-beta HTTP header with the original csv value', async () => {
+    const { fetch: captureFetch, get } = makeCaptureFetch()
+    const client = new BedrockClient({ ...BEDROCK_ARGS, fetch: captureFetch })
+    await dispatch(client)
+    const c = get()
+    expect(c).not.toBeNull()
+    expect(c!.headers['anthropic-beta']).toBe(
+      'interleaved-thinking-2025-05-14,effort-2025-11-24',
+    )
+  })
+
+  test('FIX keeps a valid AWS SigV4 authorization header (signing happens after cleanup)', async () => {
+    const { fetch: captureFetch, get } = makeCaptureFetch()
+    const client = new BedrockClient({ ...BEDROCK_ARGS, fetch: captureFetch })
+    await dispatch(client)
+    const c = get()
+    expect(c).not.toBeNull()
+    expect(c!.headers.authorization).toBeDefined()
+    expect(c!.headers.authorization.startsWith('AWS4-HMAC-SHA256')).toBe(true)
+  })
+
+  test('FIX does not disturb requests that never had anthropic_beta', async () => {
+    const { fetch: captureFetch, get } = makeCaptureFetch()
+    const client = new BedrockClient({ ...BEDROCK_ARGS, fetch: captureFetch })
+    try {
+      const stream = await client.beta.messages.create({
+        model: 'anthropic.claude-opus-4-7',
+        max_tokens: 10,
+        messages: [{ role: 'user', content: 'hi' }],
+        stream: true,
+      })
+      for await (const _ of stream) {
+        /* drain */
+      }
+    } catch {
+      /* ignore */
+    }
+    const c = get()
+    expect(c).not.toBeNull()
+    const body = JSON.parse(c!.body) as Record<string, unknown>
+    expect('anthropic_beta' in body).toBe(false)
+    expect(c!.headers['anthropic-beta']).toBeUndefined()
+  })
+})