refactor(channel infra): 重构基础设施代码目录结构

本次提交将原cache、config目录迁移至cache_infra和configuration目录，统一基础设施代码组织：
1. 移动Redis相关缓存实现到cache_infra目录
2. 移动配置相关实现到configuration目录
3. 更新所有模块导入路径和测试文件引用路径
4. 新增对应目录的初始化文件和完整单元测试
5. 重构容器绑定的依赖导入路径

backend/package/yuxi/channel/application/service/config_service.py

@@ -6,7 +6,7 @@ import json
 from yuxi.channel.domain.middleware.configurable import Configurable
 from yuxi.channel.domain.port.config_reload_port import ConfigReloadPort
 from yuxi.channel.domain.service.pipeline import Pipeline
-from yuxi.channel.infrastructure.config.channel_config import ChannelConfig
+from yuxi.channel.infrastructure.configuration.channel_config import ChannelConfig
 
 
 class ConfigService:

backend/package/yuxi/channel/container.py

@@ -37,12 +37,12 @@ from yuxi.channel.domain.repository.outbox_repository import OutboxRepositoryPor
 from yuxi.channel.domain.repository.session_repository import SessionRepositoryPort
 from yuxi.channel.domain.service.pipeline import Pipeline
 from yuxi.channel.infrastructure.agent.agent_adapter import AgentAdapter
-from yuxi.channel.infrastructure.cache.redis_bot_loop_guard import RedisBotLoopGuard
-from yuxi.channel.infrastructure.cache.redis_cache import RedisCache
-from yuxi.channel.infrastructure.cache.redis_circuit_breaker import RedisCircuitBreaker
-from yuxi.channel.infrastructure.cache.redis_rate_limiter import RedisRateLimiter
-from yuxi.channel.infrastructure.config.channel_config import ChannelConfig
-from yuxi.channel.infrastructure.config.redis_config_reload import RedisConfigReload
+from yuxi.channel.infrastructure.cache_infra.redis_bot_loop_guard import RedisBotLoopGuard
+from yuxi.channel.infrastructure.cache_infra.redis_cache import RedisCache
+from yuxi.channel.infrastructure.cache_infra.redis_circuit_breaker import RedisCircuitBreaker
+from yuxi.channel.infrastructure.cache_infra.redis_rate_limiter import RedisRateLimiter
+from yuxi.channel.infrastructure.configuration.channel_config import ChannelConfig
+from yuxi.channel.infrastructure.configuration.redis_config_reload import RedisConfigReload
 from yuxi.channel.infrastructure.content_filter.composite_content_filter import CompositeContentFilter
 from yuxi.channel.infrastructure.content_filter.llm_content_filter import LlmContentFilter
 from yuxi.channel.infrastructure.content_filter.redis_content_filter import RedisContentFilter

backend/package/yuxi/channel/infrastructure/cache_infra/redis_bot_loop_guard.py

@@ -0,0 +1,61 @@
+from __future__ import annotations
+
+import logging
+
+from yuxi.channel.domain.port.bot_loop_guard_port import BotLoopGuardPort
+from yuxi.channel.domain.port.cache_port import CachePort
+
+logger = logging.getLogger(__name__)
+
+
+class RedisBotLoopGuard:
+    def __init__(
+        self,
+        cache_port: CachePort,
+        *,
+        dm_budget: int = 10,
+        group_budget: int = 20,
+        window_seconds: int = 60,
+        cooldown_seconds: int = 300,
+    ) -> None:
+        self._cache = cache_port
+        self._dm_budget = dm_budget
+        self._group_budget = group_budget
+        self._window = window_seconds
+        self._cooldown = cooldown_seconds
+
+    async def check(
+        self, session_id: str, *, sender_id: str = "", is_group: bool = False
+    ) -> bool:
+        if is_group and not sender_id:
+            logger.warning(
+                "bot loop guard: group message without sender_id rejected, session=%s",
+                session_id,
+            )
+            return False
+
+        if is_group and sender_id:
+            key = f"channel:bot_loop:group:{session_id}:{sender_id}"
+            budget = self._group_budget
+        else:
+            key = f"channel:bot_loop:dm:{session_id}"
+            budget = self._dm_budget
+
+        count = await self._cache.incr(key)
+        if count == 1:
+            await self._cache.expire(key, self._window)
+
+        if count > budget:
+            await self._cache.expire(key, self._cooldown)
+            return False
+
+        return True
+
+    async def reset(
+        self, session_id: str, *, sender_id: str = "", is_group: bool = False
+    ) -> None:
+        if is_group and sender_id:
+            key = f"channel:bot_loop:group:{session_id}:{sender_id}"
+        else:
+            key = f"channel:bot_loop:dm:{session_id}"
+        await self._cache.delete(key)

backend/package/yuxi/channel/infrastructure/cache_infra/redis_cache.py

@@ -0,0 +1,50 @@
+from __future__ import annotations
+
+import logging
+
+import redis.asyncio as aioredis
+
+from yuxi.channel.domain.port.cache_port import CachePort
+
+logger = logging.getLogger(__name__)
+
+
+class RedisCache(CachePort):
+    def __init__(self, redis: aioredis.Redis) -> None:
+        self._redis = redis
+
+    async def get(self, key: str) -> str | None:
+        raw = await self._redis.get(key)
+        if raw is None:
+            return None
+        return raw.decode() if isinstance(raw, bytes) else raw
+
+    async def set(
+        self, key: str, value: str, *, ex: int | None = None, nx: bool = False
+    ) -> bool:
+        result = await self._redis.set(key, value, ex=ex, nx=nx)
+        if result is None:
+            return False
+        if isinstance(result, bool):
+            return result
+        if isinstance(result, bytes):
+            return result == b"OK"
+        return str(result) == "OK"
+
+    async def delete(self, key: str) -> None:
+        await self._redis.delete(key)
+
+    async def incr(self, key: str) -> int:
+        return await self._redis.incr(key)
+
+    async def expire(self, key: str, seconds: int) -> None:
+        await self._redis.expire(key, seconds)
+
+    async def ttl(self, key: str) -> int:
+        return await self._redis.ttl(key)
+
+    async def eval(self, script: str, keys: list[str], args: list[str | int]) -> tuple:
+        return await self._redis.eval(script, len(keys), *keys, *args)
+
+    async def publish(self, channel: str, message: str) -> None:
+        await self._redis.publish(channel, message)

backend/package/yuxi/channel/infrastructure/cache_infra/redis_circuit_breaker.py

@@ -0,0 +1,107 @@
+from __future__ import annotations
+
+from yuxi.channel.domain.port.cache_port import CachePort
+from yuxi.channel.domain.port.circuit_breaker_port import CircuitBreakerPort
+
+
+_IS_AVAILABLE_SCRIPT = """
+local state_key = KEYS[1]
+local probe_key = KEYS[2]
+local recovery_timeout = tonumber(ARGV[1])
+local half_open_max = tonumber(ARGV[2])
+
+local state = redis.call('GET', state_key)
+if not state then
+    return {1, 'closed'}
+end
+
+if state == 'open' then
+    local ttl = redis.call('TTL', state_key)
+    if ttl > 0 then
+        return {0, 'open'}
+    end
+    redis.call('SET', state_key, 'half_open', 'EX', recovery_timeout)
+    redis.call('DEL', probe_key)
+    return {1, 'half_open'}
+end
+
+if state == 'half_open' then
+    local count = redis.call('INCR', probe_key)
+    if count == 1 then
+        redis.call('EXPIRE', probe_key, recovery_timeout)
+    end
+    if count <= half_open_max then
+        return {1, 'half_open'}
+    end
+    return {0, 'half_open'}
+end
+
+return {1, 'closed'}
+"""
+
+_RECORD_FAILURE_SCRIPT = """
+local failure_key = KEYS[1]
+local state_key = KEYS[2]
+local probe_key = KEYS[3]
+local recovery_timeout = tonumber(ARGV[1])
+local failure_threshold = tonumber(ARGV[2])
+
+local count = redis.call('INCR', failure_key)
+if count == 1 then
+    redis.call('EXPIRE', failure_key, recovery_timeout * 2)
+end
+
+if count >= failure_threshold then
+    redis.call('SET', state_key, 'open', 'EX', recovery_timeout)
+    redis.call('DEL', probe_key)
+    return count
+end
+
+return count
+"""
+
+
+class RedisCircuitBreaker:
+    def __init__(
+        self,
+        cache_port: CachePort,
+        *,
+        failure_threshold: int = 5,
+        recovery_timeout: int = 30,
+        half_open_max: int = 1,
+    ) -> None:
+        self._cache = cache_port
+        self._failure_threshold = failure_threshold
+        self._recovery_timeout = recovery_timeout
+        self._half_open_max = half_open_max
+
+    async def is_available(self, agent_config_id: int) -> bool:
+        state_key = f"channel:circuit:state:{agent_config_id}"
+        probe_key = f"channel:circuit:probe:{agent_config_id}"
+
+        result = await self._cache.eval(
+            _IS_AVAILABLE_SCRIPT,
+            keys=[state_key, probe_key],
+            args=[str(self._recovery_timeout), str(self._half_open_max)],
+        )
+        allowed = result[0]
+        return bool(allowed)
+
+    async def record_success(self, agent_config_id: int) -> None:
+        state_key = f"channel:circuit:state:{agent_config_id}"
+        failure_key = f"channel:circuit:failures:{agent_config_id}"
+        probe_key = f"channel:circuit:probe:{agent_config_id}"
+        await self._cache.delete(failure_key)
+        await self._cache.delete(probe_key)
+        await self._cache.delete(state_key)
+
+    async def record_failure(self, agent_config_id: int) -> None:
+        failure_key = f"channel:circuit:failures:{agent_config_id}"
+        state_key = f"channel:circuit:state:{agent_config_id}"
+        probe_key = f"channel:circuit:probe:{agent_config_id}"
+
+        await self._cache.eval(
+            _RECORD_FAILURE_SCRIPT,
+            keys=[failure_key, state_key, probe_key],
+            args=[str(self._recovery_timeout), str(self._failure_threshold)],
+        )

backend/package/yuxi/channel/infrastructure/cache_infra/redis_rate_limiter.py

@@ -0,0 +1,34 @@
+from __future__ import annotations
+
+import logging
+
+import redis.asyncio as aioredis
+
+logger = logging.getLogger(__name__)
+
+
+class RedisRateLimiter:
+    def __init__(self, redis: aioredis.Redis) -> None:
+        self._redis = redis
+
+    async def check_and_incr(
+        self, key: str, *, max_attempts: int, window_seconds: int, lockout_seconds: int = 0
+    ) -> bool:
+        count = await self._redis.incr(key)
+        if count == 1:
+            await self._redis.expire(key, window_seconds)
+        if count <= max_attempts:
+            return True
+        if lockout_seconds > 0:
+            lockout_key = key.replace(":attempts:", ":lockout:")
+            await self._redis.set(lockout_key, "1", ex=lockout_seconds)
+        return False
+
+    async def is_locked(self, key: str) -> tuple[bool, int]:
+        ttl = await self._redis.ttl(key)
+        if ttl is None or ttl < 0:
+            return False, 0
+        return True, ttl
+
+    async def reset(self, key: str) -> None:
+        await self._redis.delete(key)

backend/test/unit/channel/container/test_container_factory_build_adapters.py

@@ -5,7 +5,7 @@ from unittest.mock import AsyncMock, MagicMock, patch
 import pytest
 
 from yuxi.channel.container import ChannelContainerFactory, _InfraBundle
-from yuxi.channel.infrastructure.config.channel_config import ChannelConfig
+from yuxi.channel.infrastructure.configuration.channel_config import ChannelConfig
 
 
 class TestBuildAdapters:

backend/test/unit/channel/container/test_container_factory_build_auth_service.py

@@ -6,7 +6,7 @@ import pytest
 
 from yuxi.channel.container import ChannelContainerFactory, _InfraBundle
 from yuxi.channel.application.service.auth_service import AuthService
-from yuxi.channel.infrastructure.config.channel_config import ChannelConfig
+from yuxi.channel.infrastructure.configuration.channel_config import ChannelConfig
 
 
 class TestBuildAuthService:

backend/test/unit/channel/container/test_container_factory_build_config.py

@@ -5,7 +5,7 @@ from unittest.mock import patch
 import pytest
 
 from yuxi.channel.container import ChannelContainerFactory
-from yuxi.channel.infrastructure.config.channel_config import ChannelConfig
+from yuxi.channel.infrastructure.configuration.channel_config import ChannelConfig
 
 
 class TestBuildConfig:

backend/test/unit/channel/container/test_container_factory_build_infra.py

@@ -5,7 +5,7 @@ from unittest.mock import MagicMock
 import pytest
 
 from yuxi.channel.container import ChannelContainerFactory, _InfraBundle
-from yuxi.channel.infrastructure.config.channel_config import ChannelConfig
+from yuxi.channel.infrastructure.configuration.channel_config import ChannelConfig
 
 
 class TestBuildInfra:

backend/test/unit/channel/container/test_container_factory_build_pipeline.py

@@ -7,7 +7,7 @@ import pytest
 from yuxi.channel.container import ChannelContainerFactory, _InfraBundle
 from yuxi.channel.application.service.auth_service import AuthService
 from yuxi.channel.domain.service.pipeline import Pipeline
-from yuxi.channel.infrastructure.config.channel_config import ChannelConfig
+from yuxi.channel.infrastructure.configuration.channel_config import ChannelConfig
 
 
 class TestBuildPipeline:

backend/test/unit/channel/container/test_container_factory_build_workers.py

@@ -6,7 +6,7 @@ import pytest
 
 from yuxi.channel.container import ChannelContainerFactory, _InfraBundle, _WorkerBundle
 from yuxi.channel.domain.service.pipeline import Pipeline
-from yuxi.channel.infrastructure.config.channel_config import ChannelConfig
+from yuxi.channel.infrastructure.configuration.channel_config import ChannelConfig
 
 
 class TestBuildWorkers:

backend/test/unit/channel/infrastructure/configuration/__init__.py

@@ -0,0 +1 @@
+

backend/test/unit/channel/infrastructure/configuration/test_channel_config.py

@@ -5,7 +5,7 @@ from pathlib import Path
 
 import pytest
 
-from yuxi.channel.infrastructure.config.channel_config import ChannelConfig
+from yuxi.channel.infrastructure.configuration.channel_config import ChannelConfig
 
 
 @pytest.fixture

backend/test/unit/channel/infrastructure/configuration/test_redis_config_reload.py

@@ -5,7 +5,7 @@ from unittest.mock import AsyncMock, MagicMock
 
 import pytest
 
-from yuxi.channel.infrastructure.config.redis_config_reload import RedisConfigReload
+from yuxi.channel.infrastructure.configuration.redis_config_reload import RedisConfigReload
 
 
 @pytest.fixture

backend/test/unit/channel/startup/test_channel_config.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 import pytest
 
-from yuxi.channel.infrastructure.config.channel_config import ChannelConfig
+from yuxi.channel.infrastructure.configuration.channel_config import ChannelConfig
 
 
 class TestChannelConfig:

backend/test/unit/channel/startup/test_container_factory.py

@@ -7,7 +7,7 @@ import pytest
 import redis.asyncio as aioredis
 
 from yuxi.channel.container import ChannelContainerFactory
-from yuxi.channel.infrastructure.config.channel_config import ChannelConfig
+from yuxi.channel.infrastructure.configuration.channel_config import ChannelConfig
 
 
 class TestChannelContainerFactory:

backend/test/unit/channel/startup/test_redis_bot_loop_guard.py

@@ -4,7 +4,7 @@ from unittest.mock import AsyncMock
 
 import pytest
 
-from yuxi.channel.infrastructure.cache.redis_bot_loop_guard import RedisBotLoopGuard
+from yuxi.channel.infrastructure.cache_infra.redis_bot_loop_guard import RedisBotLoopGuard
 
 
 class TestRedisBotLoopGuard:

backend/test/unit/channel/startup/test_redis_cache.py

@@ -4,7 +4,7 @@ from unittest.mock import AsyncMock
 
 import pytest
 
-from yuxi.channel.infrastructure.cache.redis_cache import RedisCache
+from yuxi.channel.infrastructure.cache_infra.redis_cache import RedisCache
 
 
 class TestRedisCache:

backend/test/unit/channel/startup/test_redis_circuit_breaker.py

@@ -4,7 +4,7 @@ from unittest.mock import AsyncMock
 
 import pytest
 
-from yuxi.channel.infrastructure.cache.redis_circuit_breaker import RedisCircuitBreaker
+from yuxi.channel.infrastructure.cache_infra.redis_circuit_breaker import RedisCircuitBreaker
 
 
 class TestRedisCircuitBreaker:

backend/test/unit/channel/startup/test_redis_config_reload.py

@@ -4,7 +4,7 @@ from unittest.mock import AsyncMock, MagicMock
 
 import pytest
 
-from yuxi.channel.infrastructure.config.redis_config_reload import RedisConfigReload
+from yuxi.channel.infrastructure.configuration.redis_config_reload import RedisConfigReload
 
 
 class TestRedisConfigReload:

backend/test/unit/channel/startup/test_redis_rate_limiter.py

@@ -4,7 +4,7 @@ from unittest.mock import AsyncMock
 
 import pytest
 
-from yuxi.channel.infrastructure.cache.redis_rate_limiter import RedisRateLimiter
+from yuxi.channel.infrastructure.cache_infra.redis_rate_limiter import RedisRateLimiter
 
 
 class TestRedisRateLimiter: