feat: 实现设置账号并发数功能（支持 bulk-update 与 fallback 逐个更新）

backend/test_account_concurrency.py

@@ -0,0 +1,212 @@
+import pytest
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker
+from sqlalchemy.pool import StaticPool
+
+from app.database import Base
+from app.models.upstream import Upstream
+from app.models.upstream_key import UpstreamGeneratedKey
+from app.models.website import Website
+from app.routers.websites import set_website_accounts_concurrency
+from app.schemas.website import SetConcurrencyRequest
+from app.services.website_client import Sub2ApiWebsiteClient
+
+@pytest.fixture()
+def db_session():
+    engine = create_engine(
+        "sqlite://",
+        connect_args={"check_same_thread": False},
+        poolclass=StaticPool,
+    )
+    from app.models import admin_user, upstream, snapshot, webhook_config, notification_log, custom_page, website, revoked_token, upstream_key
+    Base.metadata.create_all(bind=engine)
+    TestingSessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+    db = TestingSessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()
+        Base.metadata.drop_all(bind=engine)
+
+
+def test_set_website_accounts_concurrency_workflow(db_session, monkeypatch):
+    # 1. 创建测试用的网站与上游
+    w = Website(
+        id=1,
+        name="Sub2Api site",
+        site_type="sub2api",
+        base_url="http://sub2api",
+        api_prefix="api/v1",
+        auth_type="bearer",
+        auth_config_json='{"token": "tok1"}'
+    )
+    db_session.add(w)
+
+    up = Upstream(id=10, name="Upstream A", base_url="http://upstream-a")
+    db_session.add(up)
+    db_session.commit()
+
+    # 2. 插入本地导入的 Key 记录
+    # k1: 属于本站，远端正常存在的账号
+    k1 = UpstreamGeneratedKey(
+        id=101,
+        upstream_id=up.id,
+        group_id="g1",
+        key_name="key-101",
+        key_value="val-101",
+        status="active",
+        imported_website_id=w.id,
+        imported_account_id="1001",
+    )
+    # k2: 属于本站，但账号 ID 无法转为数字 (例如字符串 'abc')
+    k2 = UpstreamGeneratedKey(
+        id=102,
+        upstream_id=up.id,
+        group_id="g1",
+        key_name="key-102",
+        key_value="val-102",
+        status="active",
+        imported_website_id=w.id,
+        imported_account_id="abc",
+    )
+    # k3: 属于其他站的账号（不应受本次批量设置影响）
+    k3 = UpstreamGeneratedKey(
+        id=103,
+        upstream_id=up.id,
+        group_id="g1",
+        key_name="key-103",
+        key_value="val-103",
+        status="active",
+        imported_website_id=999, # 属于其他站
+        imported_account_id="1003",
+    )
+    # k4: 属于本站，但账号在远端已被删除
+    k4 = UpstreamGeneratedKey(
+        id=104,
+        upstream_id=up.id,
+        group_id="g1",
+        key_name="key-104",
+        key_value="val-104",
+        status="active",
+        imported_website_id=w.id,
+        imported_account_id="1004",
+    )
+    db_session.add_all([k1, k2, k3, k4])
+    db_session.commit()
+
+    # Mock Sub2Api 客户端
+    bulk_calls = []
+    update_calls = []
+    list_calls_count = 0
+
+    class MockClient:
+        def list_accounts(self):
+            nonlocal list_calls_count
+            list_calls_count += 1
+            return [
+                {"id": 1001, "name": "acc-1001", "concurrency": 10},
+                {"id": "abc", "name": "acc-abc", "concurrency": 10},
+            ]
+
+        def extract_id(self, val):
+            return str(val.get("id"))
+
+        def bulk_update_accounts(self, account_ids, body):
+            bulk_calls.append((account_ids, body))
+
+        def update_account(self, account_id, body):
+            update_calls.append((account_id, body))
+
+    monkeypatch.setattr("app.routers.websites._client", lambda row: MockClient())
+
+    # ── 1. 执行成功设置并发数，期待调用 bulk_update_accounts ──
+    req = SetConcurrencyRequest(concurrency=200)
+    res = set_website_accounts_concurrency(wid=w.id, body=req, db=db_session)
+
+    assert res.success is True
+    assert "成功 1 个" in res.message
+    assert "跳过 2 个" in res.message
+
+    items = res.items
+    assert len(items) == 3
+
+    item_1001 = next(i for i in items if i.account_id == "1001")
+    assert item_1001.status == "success"
+    assert item_1001.old_concurrency == 10
+    assert item_1001.target_concurrency == 200
+
+    item_abc = next(i for i in items if i.account_id == "abc")
+    assert item_abc.status == "skipped"
+    assert "无法转换为数字" in item_abc.message
+
+    item_1004 = next(i for i in items if i.account_id == "1004")
+    assert item_1004.status == "skipped"
+    assert "不存在" in item_1004.message
+
+    assert len(bulk_calls) == 1
+    assert bulk_calls[0] == (["1001"], {"concurrency": 200})
+    assert len(update_calls) == 0
+
+
+def test_set_website_accounts_concurrency_fallback(db_session, monkeypatch):
+    w = Website(
+        id=1,
+        name="Sub2Api site",
+        site_type="sub2api",
+        base_url="http://sub2api",
+        api_prefix="api/v1",
+        auth_type="bearer",
+        auth_config_json='{"token": "tok1"}'
+    )
+    db_session.add(w)
+
+    up = Upstream(id=10, name="Upstream A", base_url="http://upstream-a")
+    db_session.add(up)
+    db_session.commit()
+
+    k1 = UpstreamGeneratedKey(
+        id=101,
+        upstream_id=up.id,
+        group_id="g1",
+        key_name="key-101",
+        key_value="val-101",
+        status="active",
+        imported_website_id=w.id,
+        imported_account_id="1001",
+    )
+    db_session.add(k1)
+    db_session.commit()
+
+    bulk_calls = []
+    update_calls = []
+
+    class MockClientError:
+        def list_accounts(self):
+            return [{"id": 1001, "name": "acc-1001", "concurrency": 10}]
+
+        def extract_id(self, val):
+            return str(val.get("id"))
+
+        def bulk_update_accounts(self, account_ids, body):
+            bulk_calls.append((account_ids, body))
+            raise Exception("Bulk update is not supported by target server (404)")
+
+        def update_account(self, account_id, body):
+            update_calls.append((account_id, body))
+
+    monkeypatch.setattr("app.routers.websites._client", lambda row: MockClientError())
+
+    req = SetConcurrencyRequest(concurrency=150)
+    res = set_website_accounts_concurrency(wid=w.id, body=req, db=db_session)
+
+    assert res.success is True
+    assert "成功 1 个" in res.message
+
+    assert len(bulk_calls) == 1
+    assert len(update_calls) == 1
+    assert update_calls[0] == ("1001", {"concurrency": 150})
+
+    items = res.items
+    assert len(items) == 1
+    assert items[0].status == "success"
+    assert "逐个更新" in items[0].message