ref #6: [feat] add impl in memory session repository

adapter/di/container.py

@@ -1,24 +1,34 @@
 from collections.abc import Mapping
 from dataclasses import dataclass, field
+from datetime import UTC, datetime, timedelta
 from pathlib import Path
 
+import docker
+from docker import DockerClient
+
 from adapter.config.loader import load_config
 from adapter.config.model import AppConfig
+from adapter.docker.runtime import DockerSandboxRuntime
 from adapter.observability.factory import build_observability
 from adapter.observability.runtime import ObservabilityRuntime
 from domain.user import User
+from repository.sandbox_session import InMemorySandboxSessionRepository
 from repository.user import InMemoryUserRepository
+from usecase.interface import Clock
+from usecase.sandbox import CreateSandbox
 from usecase.user import GetUser
 
 
 @dataclass(frozen=True, slots=True)
 class AppRepositories:
     user: InMemoryUserRepository
+    sandbox_session: InMemorySandboxSessionRepository
 
 
 @dataclass(frozen=True, slots=True)
 class AppUsecases:
     get_user: GetUser
+    create_sandbox: CreateSandbox
 
 
 @dataclass(slots=True)
@@ -27,16 +37,29 @@ class AppContainer:
     observability: ObservabilityRuntime
     repositories: AppRepositories
     usecases: AppUsecases
+    _docker_client: DockerClient = field(repr=False)
     _is_shutdown: bool = field(default=False, init=False, repr=False)
 
     def shutdown(self) -> None:
         if self._is_shutdown:
             return
 
-        try:
-            self.observability.shutdown()
-        finally:
-            self._is_shutdown = True
+        self._is_shutdown = True
+        errors: list[Exception] = []
+
+        for action in (self._docker_client.close, self.observability.shutdown):
+            try:
+                action()
+            except Exception as exc:
+                errors.append(exc)
+
+        if errors:
+            raise ExceptionGroup('shutdown failed', errors)
+
+
+class SystemClock(Clock):
+    def now(self) -> datetime:
+        return datetime.now(tz=UTC)
 
 
 def build_container(
@@ -54,17 +77,32 @@ def build_container(
         )
 
     observability = build_observability(app_config)
+    docker_client: DockerClient = docker.from_env()
+    clock = SystemClock()
 
     user_repository = InMemoryUserRepository(
         observability.tracer, [User(id='123', email='aza@gglamer.ru', name='gglamer')]
     )
-    repositories = AppRepositories(user=user_repository)
+    sandbox_repository = InMemorySandboxSessionRepository()
+    sandbox_runtime = DockerSandboxRuntime(app_config.sandbox, docker_client)
+
+    repositories = AppRepositories(
+        user=user_repository,
+        sandbox_session=sandbox_repository,
+    )
     usecases = AppUsecases(
         get_user=GetUser(
             repository=user_repository,
             logger=observability.logger,
             tracer=observability.tracer,
-        )
+        ),
+        create_sandbox=CreateSandbox(
+            repository=sandbox_repository,
+            runtime=sandbox_runtime,
+            clock=clock,
+            logger=observability.logger,
+            ttl=timedelta(seconds=app_config.sandbox.ttl_seconds),
+        ),
     )
 
     return AppContainer(
@@ -72,4 +110,5 @@ def build_container(
         observability=observability,
         repositories=repositories,
         usecases=usecases,
+        _docker_client=docker_client,
     )

repository/sandbox_session.py

@@ -0,0 +1,28 @@
+from datetime import datetime
+
+from domain.sandbox import SandboxSession
+from usecase.interface import SandboxSessionRepository
+
+
+class InMemorySandboxSessionRepository(SandboxSessionRepository):
+    def __init__(self) -> None:
+        self._sessions_by_chat_id: dict[str, SandboxSession] = {}
+
+    def get_active_by_chat_id(self, chat_id: str) -> SandboxSession | None:
+        return self._sessions_by_chat_id.get(chat_id)
+
+    def list_expired(self, now: datetime) -> list[SandboxSession]:
+        return [
+            session
+            for session in self._sessions_by_chat_id.values()
+            if session.expires_at <= now
+        ]
+
+    def save(self, session: SandboxSession) -> None:
+        self._sessions_by_chat_id[session.chat_id] = session
+
+    def delete(self, session_id: str) -> None:
+        for chat_id, session in tuple(self._sessions_by_chat_id.items()):
+            if session.session_id == session_id:
+                del self._sessions_by_chat_id[chat_id]
+                return

tasks.md

@@ -64,7 +64,7 @@
 ### M04. In-memory session repository и usecase `CreateSandbox`
 
 - Субагент: `feature-developer`
-- Статус: pending
+- Статус: completed
 - Зависимости: `M01`, `M02`, `M03`
 - Commit required: no
 - Scope: реализовать in-memory registry активных sandbox-сессий и usecase создания sandbox с логикой reuse по `chat_id`

usecase/sandbox.py

@@ -1,5 +1,6 @@
 from dataclasses import dataclass
 from datetime import timedelta
+from uuid import uuid4
 
 from domain.sandbox import SandboxSession
 from usecase.interface import Clock, Logger, SandboxRuntime, SandboxSessionRepository
@@ -26,7 +27,47 @@ class CreateSandbox:
         self._ttl = ttl
 
     def execute(self, command: CreateSandboxCommand) -> SandboxSession:
-        raise NotImplementedError
+        now = self._clock.now()
+        session = self._repository.get_active_by_chat_id(command.chat_id)
+
+        if session is not None and session.expires_at > now:
+            self._logger.info(
+                'sandbox_reused',
+                attrs={
+                    'chat_id': command.chat_id,
+                    'session_id': session.session_id,
+                    'container_id': session.container_id,
+                },
+            )
+            return session
+
+        if session is not None:
+            self._logger.info(
+                'sandbox_replaced',
+                attrs={
+                    'chat_id': command.chat_id,
+                    'session_id': session.session_id,
+                    'container_id': session.container_id,
+                },
+            )
+            self._runtime.stop(session.container_id)
+            self._repository.delete(session.session_id)
+
+        new_session = self._runtime.create(
+            session_id=_new_session_id(),
+            chat_id=command.chat_id,
+            expires_at=now + self._ttl,
+        )
+        self._repository.save(new_session)
+        self._logger.info(
+            'sandbox_created',
+            attrs={
+                'chat_id': command.chat_id,
+                'session_id': new_session.session_id,
+                'container_id': new_session.container_id,
+            },
+        )
+        return new_session
 
 
 class CleanupExpiredSandboxes:
@@ -44,3 +85,7 @@ class CleanupExpiredSandboxes:
 
     def execute(self) -> list[SandboxSession]:
         raise NotImplementedError
+
+
+def _new_session_id() -> str:
+    return uuid4().hex