chore: import upstream snapshot with attribution
This commit is contained in:
wehub-resource-sync
@@ -0,0 +1,722 @@
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"""Temporal Sandbox agent example.
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Runs a SandboxAgent as a durable Temporal workflow. The workflow is long-lived
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and conversational: after processing each turn it idles waiting for the next
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user message. Workflows persist indefinitely in Temporal. A separate session
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manager workflow (``temporal_session_manager.py``) orchestrates session
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creation, destruction, and discovery.
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Usage
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-----
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Install the Temporal extra first::
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uv sync --extra temporal --extra daytona
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Start a local Temporal server (requires the Temporal CLI)::
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temporal server start-dev
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In one terminal, start the worker::
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python examples/sandbox/extensions/temporal_sandbox_agent.py worker
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In another terminal, start the TUI::
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python examples/sandbox/extensions/temporal_sandbox_agent.py run
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"""
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from __future__ import annotations
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import argparse
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import asyncio
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import json
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import os as _os
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import sys
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from datetime import timedelta
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from enum import Enum
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from pathlib import Path
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from typing import Any, Literal, cast
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from pydantic import BaseModel, SerializeAsAny, field_validator, model_serializer
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from temporalio import workflow
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from temporalio.client import Client
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from temporalio.contrib.openai_agents.workflow import temporal_sandbox_client
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from temporalio.worker import Worker
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from temporalio.worker.workflow_sandbox import (
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SandboxedWorkflowRunner,
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SandboxRestrictions,
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)
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from agents import ModelSettings, Runner
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from agents.agent import Agent
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from agents.extensions.sandbox import (
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DaytonaSandboxClientOptions,
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DaytonaSandboxSessionState,
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E2BSandboxClientOptions,
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E2BSandboxSessionState,
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)
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from agents.items import (
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MessageOutputItem,
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RunItem,
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ToolApprovalItem,
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ToolCallItem,
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TResponseInputItem,
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)
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from agents.lifecycle import RunHooksBase
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from agents.run import RunConfig
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from agents.sandbox import Manifest, SandboxAgent, SandboxRunConfig
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from agents.sandbox.sandboxes import (
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DockerSandboxClientOptions,
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DockerSandboxSessionState,
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UnixLocalSandboxClientOptions,
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UnixLocalSandboxSessionState,
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)
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from agents.sandbox.session.sandbox_session_state import SandboxSessionState
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from agents.sandbox.snapshot import SnapshotBase
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# Allow sibling and repo-root imports.
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_THIS_DIR = _os.path.dirname(_os.path.abspath(__file__))
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_REPO_ROOT = _os.path.abspath(_os.path.join(_THIS_DIR, "..", "..", "..", ".."))
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for _p in (_THIS_DIR, _REPO_ROOT):
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if _p not in sys.path:
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sys.path.insert(0, _p)
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from examples.sandbox.misc.workspace_shell import WorkspaceShellCapability # noqa: E402
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class SandboxBackend(str, Enum):
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DAYTONA = "daytona"
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DOCKER = "docker"
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E2B = "e2b"
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LOCAL = "local"
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DEFAULT_BACKEND = SandboxBackend.DAYTONA
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TASK_QUEUE = "sandbox-agent-queue"
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class _AlwaysSerializeType(BaseModel):
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"""Base that ensures the ``type`` discriminator survives ``exclude_unset`` round-trips."""
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@model_serializer(mode="wrap")
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def _serialize_always_include_type(self, handler: Any) -> dict[str, Any]:
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data: dict[str, Any] = handler(self)
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data["type"] = self.type # type: ignore[attr-defined]
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return data
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class SwitchToLocalBackend(_AlwaysSerializeType):
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"""Switch target for the local unix sandbox backend."""
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type: Literal["local"] = "local"
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workspace_root: str = "/workspace"
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class SwitchBackendSignal(BaseModel):
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"""Payload for the ``switch_backend`` signal."""
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target: Literal["daytona", "docker", "e2b"] | SwitchToLocalBackend
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# ---------------------------------------------------------------------------
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# Workflow input / output types
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# ---------------------------------------------------------------------------
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class _HasSnapshot(BaseModel):
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@field_validator("snapshot", mode="before", check_fields=False)
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@classmethod
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def _parse_snapshot(cls, v: object) -> SnapshotBase | None:
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if v is None or isinstance(v, SnapshotBase):
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return v
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return SnapshotBase.parse(v)
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class WorkflowSnapshot(_HasSnapshot):
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"""Atomic snapshot of an agent workflow's forkable state."""
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sandbox_session_state: (
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DaytonaSandboxSessionState
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| DockerSandboxSessionState
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| E2BSandboxSessionState
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| UnixLocalSandboxSessionState
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| None
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) = None
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snapshot: SerializeAsAny[SnapshotBase] | None = (
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None # serialized SnapshotBase for cross-backend creation
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)
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previous_response_id: str | None = None
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history: list[dict[str, Any]] = []
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class AgentRequest(_HasSnapshot):
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messages: list[dict[str, Any]]
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cwd: str = ""
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backend: str = "daytona" # SandboxBackend value — determines client options
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sandbox_session_state: (
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DaytonaSandboxSessionState
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| DockerSandboxSessionState
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| E2BSandboxSessionState
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| UnixLocalSandboxSessionState
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| None
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) = None
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snapshot: SerializeAsAny[SnapshotBase] | None = (
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None # serialized SnapshotBase for cross-backend creation
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)
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previous_response_id: str | None = None
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history: list[dict[str, Any]] = [] # conversation history to seed (e.g. when forking)
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manifest: Manifest | None = None # per-session manifest override
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class AgentResponse(BaseModel):
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"""Returned when the workflow is destroyed."""
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pass
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class ToolCallRecord(BaseModel):
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"""A single tool call with its input and output for TUI display."""
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tool_name: str
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description: str
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arguments_json: str
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output: str | None = None
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requires_approval: bool = False
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approved: bool | None = None
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class ChatResponse(BaseModel):
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"""Structured response from chat() replacing the plain string."""
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text: str | None = None
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tool_calls: list[ToolCallRecord] = []
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approval_request: ToolCallRecord | None = None
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class LiveToolCall(BaseModel):
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"""A tool call visible to the TUI during an active turn."""
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call_id: str
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tool_name: str
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arguments: str
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status: str = "pending" # pending | running | completed
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output: str | None = None
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class TurnState(BaseModel):
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"""Everything the TUI needs — returned by a single query during polling."""
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# idle | thinking | awaiting_approval | complete
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status: str = "idle"
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tool_calls: list[LiveToolCall] = []
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response_text: str | None = None
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approval_request: ToolCallRecord | None = None
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turn_id: int = 0
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# ---------------------------------------------------------------------------
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# Helpers
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# ---------------------------------------------------------------------------
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def _format_approval_item(item: ToolApprovalItem) -> str:
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"""Return a human-readable summary of a tool approval request."""
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raw = item.raw_item
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name = getattr(raw, "name", None) or item.tool_name or "unknown"
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# Try to extract arguments for shell commands
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args_str = getattr(raw, "arguments", None)
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if args_str and isinstance(args_str, str):
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try:
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parsed = json.loads(args_str)
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if name == "shell" and "commands" in parsed:
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cmds = parsed["commands"]
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return f"shell: {'; '.join(cmds)}"
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except (json.JSONDecodeError, TypeError):
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pass
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return f"{name}: {args_str or '(no args)'}"
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def _extract_text_from_items(items: list[RunItem]) -> str | None:
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"""Pull the last assistant text from generated run items."""
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for item in reversed(items):
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if isinstance(item, MessageOutputItem):
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raw = item.raw_item
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content = getattr(raw, "content", [])
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if isinstance(content, list):
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for block in content:
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text = getattr(block, "text", None)
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if isinstance(text, str):
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return text
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return None
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def _tool_call_records_from_items(items: list[RunItem]) -> list[ToolCallRecord]:
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"""Build ToolCallRecord list from generated RunItems."""
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records: list[ToolCallRecord] = []
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for item in items:
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if isinstance(item, ToolCallItem):
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raw = item.raw_item
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name = getattr(raw, "name", None) or "unknown"
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args = getattr(raw, "arguments", "{}")
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records.append(
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ToolCallRecord(
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tool_name=name,
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description=f"{name}: {args}",
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arguments_json=args if isinstance(args, str) else json.dumps(args),
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)
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)
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return records
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# ---------------------------------------------------------------------------
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# Workflow definition
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# ---------------------------------------------------------------------------
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class _LiveStateHooks(RunHooksBase[Any, Agent[Any]]):
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"""RunHooks that update workflow-queryable state for live TUI polling."""
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def __init__(self, wf: AgentWorkflow) -> None:
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self._wf = wf
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async def on_llm_end(self, context, agent, response):
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"""Extract tool calls from the model response and register them."""
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for item in response.output:
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call_id = getattr(item, "call_id", None)
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if not call_id:
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continue
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# Standard function calls have name + arguments
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name = getattr(item, "name", None)
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if name:
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self._wf._live_tool_calls.append(
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LiveToolCall(
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call_id=call_id,
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tool_name=name,
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arguments=getattr(item, "arguments", None) or "{}",
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status="pending",
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)
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)
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continue
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# Shell tool calls have action.commands / action.command
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action = getattr(item, "action", None)
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if action:
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cmds = getattr(action, "commands", None) or getattr(action, "command", None)
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if isinstance(cmds, list):
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args = json.dumps({"commands": cmds})
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elif isinstance(cmds, str):
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args = json.dumps({"command": cmds})
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else:
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args = "{}"
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tool_name = getattr(item, "type", None) or "shell"
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self._wf._live_tool_calls.append(
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LiveToolCall(
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call_id=call_id,
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tool_name=tool_name,
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arguments=args,
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status="pending",
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)
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)
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async def on_tool_start(self, context, agent, tool):
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# Match first pending tool call (tools execute in order)
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for tc in self._wf._live_tool_calls:
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if tc.status == "pending":
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tc.status = "running"
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break
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async def on_tool_end(self, context, agent, tool, result):
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# Match first running tool call
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for tc in self._wf._live_tool_calls:
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if tc.status == "running":
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tc.status = "completed"
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tc.output = result[:4000] if result else None
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break
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@workflow.defn
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class AgentWorkflow:
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"""A long-lived conversational agent workflow.
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The workflow persists indefinitely in Temporal, idling between TUI
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sessions. It only terminates when explicitly destroyed via the
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``destroy`` signal (sent by the session manager).
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"""
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def __init__(self) -> None:
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self._pending_messages: list[str] = []
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self._done = False
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self._conversation_history: list[dict[str, Any]] = []
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self._sandbox_session_state: (
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DaytonaSandboxSessionState
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| DockerSandboxSessionState
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| E2BSandboxSessionState
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| UnixLocalSandboxSessionState
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| None
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) = None
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self._previous_response_id: str | None = None
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self._paused: bool = False
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self._pause_requested = False
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self._turn_tool_calls: list[ToolCallRecord] = []
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self._manifest_override: Manifest | None = None
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self._backend: SandboxBackend = DEFAULT_BACKEND
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self._snapshot: SnapshotBase | None = None
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self._live_tool_calls: list[LiveToolCall] = []
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# Turn state — queried by the TUI polling loop
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self._turn_status: str = "idle"
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self._turn_id: int = 0
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self._last_response_text: str | None = None
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self._pending_approval: ToolCallRecord | None = None
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@workflow.query
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def is_paused(self) -> bool:
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return self._paused
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@workflow.signal
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async def send_message(self, msg: str) -> None:
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"""Enqueue a user message. The TUI drives everything via get_turn_state polling."""
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self._pending_messages.append(msg)
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self._conversation_history.append({"role": "user", "content": msg})
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@workflow.query
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def get_history(self) -> list[dict[str, Any]]:
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"""Return conversation history for TUI replay on reconnect."""
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return self._conversation_history
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@workflow.query
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def get_snapshot_id(self) -> str | None:
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"""Return just the current snapshot ID (lightweight)."""
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if self._sandbox_session_state:
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return self._sandbox_session_state.snapshot.id
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return None
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@workflow.query
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def get_snapshot(self) -> WorkflowSnapshot:
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"""Return an atomic snapshot of run state and conversation history."""
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# Prefer the live session snapshot, but fall back to self._snapshot
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# so workspace state survives a backend switch (which clears
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# _sandbox_session_state) until the next turn recreates a session.
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snapshot = self._snapshot
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if self._sandbox_session_state:
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snapshot = self._sandbox_session_state.snapshot
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return WorkflowSnapshot(
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sandbox_session_state=self._sandbox_session_state,
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snapshot=snapshot,
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previous_response_id=self._previous_response_id,
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history=self._conversation_history,
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)
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@workflow.query
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def get_turn_state(self) -> TurnState:
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"""Single query that returns everything the TUI needs."""
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return TurnState(
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status=self._turn_status,
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tool_calls=list(self._live_tool_calls),
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response_text=self._last_response_text,
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approval_request=self._pending_approval,
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turn_id=self._turn_id,
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)
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@workflow.update
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async def pause(self) -> None:
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"""Request the workflow to pause."""
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if self._paused:
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return
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self._pause_requested = True
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await workflow.wait_condition(lambda: self._paused)
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@workflow.update
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async def switch_backend(self, args: SwitchBackendSignal) -> None:
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"""Switch to a different sandbox backend for subsequent turns.
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Clears the backend-specific session state so the next turn creates a
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fresh session on the new backend. The portable snapshot is preserved
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so the workspace filesystem can be carried over.
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"""
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match args.target:
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case "daytona":
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self._backend = SandboxBackend.DAYTONA
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self._manifest_override = Manifest(root="/home/daytona/workspace")
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case "docker":
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self._backend = SandboxBackend.DOCKER
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self._manifest_override = Manifest(root="/workspace")
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case "e2b":
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self._backend = SandboxBackend.E2B
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self._manifest_override = Manifest() # E2B resolves relative to sandbox home
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case SwitchToLocalBackend(workspace_root=root):
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self._backend = SandboxBackend.LOCAL
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self._manifest_override = Manifest(root=root)
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self._sandbox_session_state = None
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@workflow.signal
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async def destroy(self) -> None:
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"""Terminate the workflow permanently."""
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self._done = True
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def _resolve_sandbox_options(
|
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self,
|
||||
) -> (
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DaytonaSandboxClientOptions
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||||
| DockerSandboxClientOptions
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||||
| E2BSandboxClientOptions
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| UnixLocalSandboxClientOptions
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||||
):
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match self._backend:
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case SandboxBackend.DAYTONA:
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return DaytonaSandboxClientOptions(pause_on_exit=False)
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case SandboxBackend.DOCKER:
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return DockerSandboxClientOptions(image="python:3.14")
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case SandboxBackend.E2B:
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return E2BSandboxClientOptions(sandbox_type="e2b")
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case SandboxBackend.LOCAL:
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return UnixLocalSandboxClientOptions()
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def _resolve_manifest(self) -> Manifest:
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match self._backend:
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case SandboxBackend.DAYTONA:
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return Manifest(root="/home/daytona/workspace")
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case SandboxBackend.DOCKER:
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return Manifest(root="/workspace")
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case SandboxBackend.E2B:
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return Manifest() # E2B resolves workspace root relative to the sandbox home
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case SandboxBackend.LOCAL:
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return Manifest(root="/workspace")
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@workflow.run
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async def run(self, request: AgentRequest) -> AgentResponse:
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self._backend = SandboxBackend(request.backend)
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self._snapshot = request.snapshot
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if request.history:
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||||
self._conversation_history = list(request.history)
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if request.sandbox_session_state:
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self._sandbox_session_state = request.sandbox_session_state
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||||
if request.previous_response_id:
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self._previous_response_id = request.previous_response_id
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||||
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||||
self._manifest_override = request.manifest
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||||
|
||||
while not self._done:
|
||||
await workflow.wait_condition(
|
||||
lambda: (len(self._pending_messages) > 0 or self._pause_requested or self._done),
|
||||
)
|
||||
|
||||
if self._pause_requested:
|
||||
# Let the caller (e.g. SessionManagerWorkflow.fork_session) know
|
||||
# no turn is in progress so it can safely snapshot state.
|
||||
self._paused = True
|
||||
self._pause_requested = False
|
||||
await workflow.wait_condition(lambda: len(self._pending_messages) > 0 or self._done)
|
||||
self._paused = False
|
||||
|
||||
if self._done:
|
||||
break
|
||||
|
||||
user_messages = list(self._pending_messages)
|
||||
self._pending_messages.clear()
|
||||
|
||||
self._turn_id += 1
|
||||
self._turn_status = "thinking"
|
||||
self._live_tool_calls = []
|
||||
self._pending_approval = None
|
||||
self._last_response_text = None
|
||||
|
||||
try:
|
||||
manifest = self._manifest_override or self._resolve_manifest()
|
||||
agent = self._build_agent(manifest)
|
||||
await self._run_turn(agent, user_messages)
|
||||
self._last_response_text = self._last_text
|
||||
if self._last_text:
|
||||
self._conversation_history.append(
|
||||
{"role": "assistant", "content": self._last_text}
|
||||
)
|
||||
except Exception as e:
|
||||
self._last_response_text = f"Error: {e}"
|
||||
finally:
|
||||
self._turn_status = "complete"
|
||||
|
||||
return AgentResponse()
|
||||
|
||||
def _build_agent(self, manifest: Manifest, model: str = "gpt-5.6-sol") -> SandboxAgent:
|
||||
"""Construct the SandboxAgent used by the workflow."""
|
||||
return SandboxAgent(
|
||||
name="Temporal Sandbox Agent",
|
||||
model=model,
|
||||
instructions=(
|
||||
"You are a helpful coding assistant. Inspect the workspace and answer "
|
||||
"questions. Use the shell tool to run commands. "
|
||||
"Do not invent files or statuses that are not present in the workspace. "
|
||||
"Cite the file names you inspected."
|
||||
),
|
||||
default_manifest=manifest,
|
||||
capabilities=[WorkspaceShellCapability()],
|
||||
model_settings=ModelSettings(tool_choice="auto"),
|
||||
)
|
||||
|
||||
async def _run_turn(
|
||||
self,
|
||||
agent: SandboxAgent,
|
||||
user_messages: list[str],
|
||||
) -> None:
|
||||
self._turn_tool_calls = []
|
||||
self._last_text: str | None = None
|
||||
|
||||
hooks = _LiveStateHooks(self)
|
||||
|
||||
# Always pass fresh input — previous_response_id gives the API
|
||||
# conversation context. Sandbox session state is carried via
|
||||
# run_config.sandbox.session_state to preserve the sandbox across turns.
|
||||
if len(user_messages) == 1:
|
||||
input_arg: str | list[TResponseInputItem] = user_messages[0]
|
||||
else:
|
||||
input_arg = [{"role": "user", "content": m} for m in user_messages]
|
||||
|
||||
run_config = RunConfig(
|
||||
sandbox=SandboxRunConfig(
|
||||
client=temporal_sandbox_client(self._backend.value),
|
||||
options=self._resolve_sandbox_options(),
|
||||
# Restore sandbox session state from the previous turn if available.
|
||||
session_state=self._sandbox_session_state,
|
||||
snapshot=self._snapshot,
|
||||
),
|
||||
workflow_name="Temporal Sandbox workflow",
|
||||
)
|
||||
|
||||
# Run the agent -- loops internally handling tool calls
|
||||
result = await Runner.run(
|
||||
agent,
|
||||
input_arg,
|
||||
run_config=run_config,
|
||||
hooks=hooks,
|
||||
previous_response_id=self._previous_response_id,
|
||||
)
|
||||
|
||||
# Extract results
|
||||
self._turn_tool_calls.extend(_tool_call_records_from_items(result.new_items))
|
||||
self._last_text = _extract_text_from_items(result.new_items)
|
||||
|
||||
# Track response ID for conversation continuity and save state
|
||||
# to preserve sandbox session across turns.
|
||||
self._previous_response_id = result.last_response_id
|
||||
|
||||
# Persist sandbox session state for the next turn.
|
||||
try:
|
||||
state = result.to_state()
|
||||
sandbox_data = state.to_json().get("sandbox", {})
|
||||
session_state_data = sandbox_data.get("session_state")
|
||||
if session_state_data:
|
||||
self._sandbox_session_state = cast(
|
||||
DaytonaSandboxSessionState | UnixLocalSandboxSessionState,
|
||||
SandboxSessionState.parse(session_state_data),
|
||||
)
|
||||
# Keep the portable snapshot up to date so it can seed a
|
||||
# fresh session after a backend switch.
|
||||
self._snapshot = self._sandbox_session_state.snapshot
|
||||
except Exception:
|
||||
pass
|
||||
|
||||
|
||||
# ---------------------------------------------------------------------------
|
||||
# Worker entrypoint
|
||||
# ---------------------------------------------------------------------------
|
||||
|
||||
|
||||
async def run_worker() -> None:
|
||||
# Imported here to avoid unnecessary passthroughs in the workflow sandbox.
|
||||
import docker # type: ignore[import-untyped]
|
||||
from _worker_setup import print_backend_warnings # type: ignore[import-not-found]
|
||||
from temporal_session_manager import ( # type: ignore[import-not-found]
|
||||
SessionManagerWorkflow,
|
||||
pause_workflow,
|
||||
query_workflow_snapshot,
|
||||
switch_workflow_backend,
|
||||
)
|
||||
from temporalio.contrib.openai_agents import (
|
||||
ModelActivityParameters,
|
||||
OpenAIAgentsPlugin,
|
||||
SandboxClientProvider,
|
||||
)
|
||||
|
||||
from agents.extensions.sandbox import DaytonaSandboxClient, E2BSandboxClient
|
||||
from agents.sandbox.sandboxes import DockerSandboxClient, UnixLocalSandboxClient
|
||||
|
||||
sandbox_clients: list[SandboxClientProvider] = [
|
||||
SandboxClientProvider("local", UnixLocalSandboxClient()),
|
||||
]
|
||||
if _os.environ.get("DAYTONA_API_KEY"):
|
||||
sandbox_clients.append(SandboxClientProvider("daytona", DaytonaSandboxClient()))
|
||||
if _os.environ.get("E2B_API_KEY"):
|
||||
sandbox_clients.append(SandboxClientProvider("e2b", E2BSandboxClient()))
|
||||
try:
|
||||
sandbox_clients.append(
|
||||
SandboxClientProvider("docker", DockerSandboxClient(docker.from_env()))
|
||||
)
|
||||
except docker.errors.DockerException:
|
||||
pass
|
||||
|
||||
plugin = OpenAIAgentsPlugin(
|
||||
model_params=ModelActivityParameters(
|
||||
start_to_close_timeout=timedelta(seconds=120),
|
||||
),
|
||||
sandbox_clients=sandbox_clients,
|
||||
)
|
||||
|
||||
temporal_client = await Client.connect("localhost:7233", plugins=[plugin])
|
||||
|
||||
worker = Worker(
|
||||
temporal_client,
|
||||
task_queue=TASK_QUEUE,
|
||||
workflows=[AgentWorkflow, SessionManagerWorkflow],
|
||||
activities=[pause_workflow, query_workflow_snapshot, switch_workflow_backend],
|
||||
workflow_runner=SandboxedWorkflowRunner(
|
||||
restrictions=SandboxRestrictions.default.with_passthrough_modules(
|
||||
"pydantic_core",
|
||||
),
|
||||
),
|
||||
)
|
||||
|
||||
print_backend_warnings({p.name for p in sandbox_clients})
|
||||
print(f"Worker started on task queue '{TASK_QUEUE}'. Press Ctrl-C to stop.")
|
||||
await worker.run()
|
||||
|
||||
|
||||
# ---------------------------------------------------------------------------
|
||||
# CLI entrypoints
|
||||
# ---------------------------------------------------------------------------
|
||||
|
||||
|
||||
async def run_conversation() -> None:
|
||||
"""Start the TUI -- sessions are managed entirely via Temporal."""
|
||||
from temporal_sandbox_tui import ConversationApp # type: ignore[import-not-found]
|
||||
|
||||
app = ConversationApp(
|
||||
workflow_cls=AgentWorkflow,
|
||||
task_queue=TASK_QUEUE,
|
||||
cwd=str(Path.cwd()),
|
||||
)
|
||||
await app.run_async()
|
||||
|
||||
|
||||
# ---------------------------------------------------------------------------
|
||||
# Argument parsing
|
||||
# ---------------------------------------------------------------------------
|
||||
|
||||
|
||||
def parse_args() -> argparse.Namespace:
|
||||
parser = argparse.ArgumentParser(
|
||||
description="Run the Sandbox agent as a multi-turn Temporal workflow."
|
||||
)
|
||||
sub = parser.add_subparsers(dest="command", required=True)
|
||||
|
||||
sub.add_parser("worker", help="Start the Temporal worker process.")
|
||||
sub.add_parser("run", help="Start an interactive agent conversation.")
|
||||
|
||||
return parser.parse_args()
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
args = parse_args()
|
||||
if args.command == "worker":
|
||||
asyncio.run(run_worker())
|
||||
else:
|
||||
asyncio.run(run_conversation())
|
||||
Reference in New Issue
Block a user