63ac99788b
PR #2756 added a try/except around adapter.setup() so a missing LLM key doesn't crash the workspace boot. Two paths that now run AFTER setup succeeds were not similarly isolated, leaving small but real coupling risks for future adapter authors. 1. **Skill metadata enrichment swap (main.py:248-259).** When adapter.setup() returns, main.py reads adapter.loaded_skills and replaces the static stubs in agent_card.skills with rich metadata (description, tags, examples). The list comprehension assumes each element exposes .metadata.{id,name,description,tags,examples}. A future adapter that returns a non-canonical shape would raise AttributeError, propagate to the outer except, capture as adapter_error, and silently degrade an OK boot to the not-configured state — even though setup() actually succeeded. Extract to card_helpers.enrich_card_skills(card, loaded_skills) → bool. Helper swallows enrichment failures, logs the cause, returns False, leaves the static stubs in place. setup() success path continues unchanged. 6 unit tests cover: None input, empty list, canonical happy path, missing .metadata attr, partial .metadata (missing one canonical field), atomic-failure-no-partial-swap. 2. **/transcript handler (main.py:513).** Calls await adapter.transcript_lines(...) without try/except. BaseAdapter's default returns {"supported": false} so today's 4 adapters never trigger this — but a future adapter override that assumes setup() ran would surface as a 500 from Starlette's default error handler instead of a useful 503 with the exception class + message. Inline try/except returns 503 with the reason, matching the not-configured JSON-RPC handler's pattern. Both changes match the architectural principle the PR #2756 chain established: availability (workspace reachable) is decoupled from configuration / adapter behavior. Operators see useful errors instead of silent degradation; future adapter authors can't accidentally break tenant readiness with a shape mismatch. Adds: - workspace/card_helpers.py (~50 lines, 100% covered) - workspace/tests/test_card_helpers.py (6 tests) - AgentCard/AgentSkill/AgentCapabilities/AgentInterface stubs to workspace/tests/conftest.py so future card-related tests work under the existing a2a-mock infrastructure - card_helpers in TOP_LEVEL_MODULES (drift gate would have caught it) Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
817 lines
39 KiB
Python
817 lines
39 KiB
Python
"""Workspace runtime entry point.
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Loads config -> discovers adapter -> setup -> create executor -> wrap in A2A -> register -> heartbeat.
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"""
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import asyncio
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import json
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import os
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import socket
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import httpx
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import uvicorn
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# KI-009 a2a-sdk v1 migration: A2AStarletteApplication removed; use Starlette route factory
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from a2a.server.routes import create_agent_card_routes, create_jsonrpc_routes
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from a2a.server.request_handlers import DefaultRequestHandler
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from a2a.server.tasks import InMemoryTaskStore
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from a2a.types import AgentCard, AgentCapabilities, AgentSkill, AgentInterface
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from starlette.applications import Starlette
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from adapters import get_adapter, AdapterConfig
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from agents_md import generate_agents_md
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from config import load_config
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from heartbeat import HeartbeatLoop
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from preflight import run_preflight, render_preflight_report
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from builtin_tools.awareness_client import get_awareness_config
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import uuid as _uuid
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from builtin_tools.telemetry import setup_telemetry, make_trace_middleware
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from policies.namespaces import resolve_awareness_namespace
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from initial_prompt import (
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mark_initial_prompt_attempted,
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resolve_initial_prompt_marker,
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)
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from platform_auth import auth_headers, self_source_headers
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def get_machine_ip() -> str: # pragma: no cover
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"""Get the machine's IP for A2A discovery."""
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try:
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s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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s.connect(("8.8.8.8", 80))
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ip = s.getsockname()[0]
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s.close()
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return ip
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except Exception:
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return "127.0.0.1"
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# Re-exported from transcript_auth for the inline /transcript handler.
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# Separate module keeps the security-critical gate import-light + unit-testable.
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from transcript_auth import transcript_authorized as _transcript_authorized
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async def main(): # pragma: no cover
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workspace_id = os.environ.get("WORKSPACE_ID", "")
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if not workspace_id:
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raise SystemExit("FATAL: WORKSPACE_ID env var is not set. Aborting.")
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config_path = os.environ.get("WORKSPACE_CONFIG_PATH", "/configs")
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# Docker-aware default — host.docker.internal resolves the platform service
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# from inside the Docker network mesh; falls back to localhost for local dev.
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if os.path.exists("/.dockerenv") or os.environ.get("DOCKER_VERSION"):
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platform_url = os.environ.get("PLATFORM_URL", "http://host.docker.internal:8080")
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else:
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platform_url = os.environ.get("PLATFORM_URL", "http://localhost:8080")
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awareness_config = get_awareness_config()
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# 0. Initialise OpenTelemetry (no-op if packages not installed)
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setup_telemetry(service_name=workspace_id)
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# 0a. Fix /workspace perms before any agent code runs. Docker ships
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# named volumes as root:root 755 — without this the non-root agent
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# user can't write files the user asked it to produce, and the
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# "agent → file → user downloads" flow dead-ends at a bash "permission
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# denied". Best-effort: no-ops silently if molecule-runtime itself
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# isn't root (template's own start.sh should have handled it there).
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from executor_helpers import ensure_workspace_writable
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ensure_workspace_writable()
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# 1. Load config
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config = load_config(config_path)
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port = config.a2a.port
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preflight = run_preflight(config, config_path)
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render_preflight_report(preflight)
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# 1a. Generate AGENTS.md so peer agents and discovery tools can see this
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# workspace's identity, role, endpoint, and capabilities immediately.
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try:
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generate_agents_md(config_path, "/workspace/AGENTS.md")
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except Exception as _agents_md_err: # pragma: no cover
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print(f"Warning: AGENTS.md generation failed (non-fatal): {_agents_md_err}")
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if not preflight.ok:
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raise SystemExit(1)
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if awareness_config:
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awareness_namespace = resolve_awareness_namespace(
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workspace_id,
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awareness_config.get("namespace", ""),
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)
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print(f"Awareness enabled for namespace: {awareness_namespace}")
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# 1.5 Initialise governance adapter (no-op if disabled or package absent)
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from builtin_tools.governance import initialize_governance
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if config.governance.enabled:
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await initialize_governance(config.governance)
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print(f"Governance: Microsoft Agent Governance Toolkit enabled (mode={config.governance.policy_mode})")
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else:
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print("Governance: disabled (set governance.enabled: true in config.yaml to activate)")
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# 2. Create heartbeat (passed to adapter for task tracking).
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# interval is sourced from observability.heartbeat_interval_seconds
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# in config.yaml — clamped to [5, 300] at parse time. Operators
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# who want a faster crash-detection signal lower it; ones who want
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# to reduce platform write load raise it.
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heartbeat = HeartbeatLoop(
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platform_url,
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workspace_id,
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interval_seconds=config.observability.heartbeat_interval_seconds,
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)
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# 3. Get adapter for this runtime
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runtime = config.runtime or "langgraph"
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adapter_cls = get_adapter(runtime) # Raises KeyError if unknown — no silent fallback
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adapter = adapter_cls()
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print(f"Runtime: {runtime} ({adapter.display_name()})")
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# 3a. Wire pluggable event-log backend from config.observability.event_log.
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# Default config.yaml sets backend=memory; operators set "disabled" to
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# opt out without removing append-call sites from adapter code.
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from event_log import create_event_log
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adapter.event_log = create_event_log(
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backend=config.observability.event_log.backend,
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ttl_seconds=config.observability.event_log.ttl_seconds,
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max_entries=config.observability.event_log.max_entries,
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)
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# 4. Build adapter config
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adapter_config = AdapterConfig(
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model=config.model,
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system_prompt=None, # Adapter builds its own prompt
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tools=config.skills, # Skill names from config.yaml
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runtime_config=vars(config.runtime_config) if config.runtime_config else {},
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config_path=config_path,
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workspace_id=workspace_id,
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prompt_files=config.prompt_files,
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a2a_port=port,
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heartbeat=heartbeat,
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)
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# 5. Build the AgentCard *before* adapter.setup() so /.well-known/agent-card.json
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# is reachable as soon as uvicorn binds, regardless of whether the adapter
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# has working LLM credentials. Decoupling readiness ("is the workspace up?")
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# from configuration ("can it actually answer?") means a workspace with a
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# missing/rotated key stays REACHABLE — canvas can render a clear
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# "agent not configured" error instead of "stuck booting forever," and
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# operators can deprovision/redeploy normally. Skills built from
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# config.skills (static names from config.yaml) up front; richer metadata
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# from the adapter's loaded_skills swaps in below if setup() succeeds.
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machine_ip = os.environ.get("HOSTNAME", get_machine_ip())
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workspace_url = f"http://{machine_ip}:{port}"
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# v1: AgentCard.url removed; put url+protocol in supported_interfaces instead.
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# v1: AgentCapabilities.inputModes/outputModes removed; move to AgentCard.default_*.
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# v1: pushNotifications → push_notifications (Pydantic field name)
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#
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# AgentCard's protocol message uses `supported_interfaces` (plural,
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# interfaces — see a2a-sdk types/a2a_pb2.pyi:189). The 0.3.x→1.0
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# migration in #1974 originally used `supported_protocols`, which
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# the protobuf doesn't expose at all — every workspace boot since
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# then crashed with `ValueError: Protocol message AgentCard has no
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# "supported_protocols" field`. The crash didn't surface in the
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# publish-runtime smoke because the smoke only IMPORTS
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# molecule_runtime.main, never CALLS the AgentCard constructor.
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# Don't rename back.
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agent_card = AgentCard(
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name=config.name,
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description=config.description or config.name,
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version=config.version,
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supported_interfaces=[
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AgentInterface(protocol_binding="https://a2a.g/v1", url=workspace_url)
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],
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capabilities=AgentCapabilities(
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streaming=config.a2a.streaming,
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push_notifications=config.a2a.push_notifications,
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# Note: state_transition_history (a 0.x capability flag) was
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# removed in a2a-sdk 1.0. Per the SDK's own
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# a2a/compat/v0_3/conversions.py: "No longer supported in
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# v1.0". The capability is now universal — Task.history is
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# always available and tasks/get accepts historyLength via
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# apply_history_length(). Don't add this kwarg back.
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),
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# Static skill stubs from config.yaml; replaced with rich metadata
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# below if adapter.setup() loads skills successfully.
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skills=[
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AgentSkill(id=name, name=name, description=name, tags=[], examples=[])
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for name in (config.skills or [])
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],
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default_input_modes=["text/plain", "application/json"],
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default_output_modes=["text/plain", "application/json"],
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)
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# 6. Setup adapter and create executor
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# On failure: log + continue. The card route stays mounted (above);
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# the JSON-RPC route below returns -32603 "agent not configured" until
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# the operator fixes credentials and redeploys. Heartbeat keeps running
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# so the platform sees the workspace as reachable-but-misconfigured
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# rather than crash-looping.
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adapter_ready = False
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adapter_error: str | None = None
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executor = None
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try:
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await adapter.setup(adapter_config)
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executor = await adapter.create_executor(adapter_config)
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# 6a. Boot-smoke short-circuit (issue #2275): if MOLECULE_SMOKE_MODE
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# is set, exercise the executor's full import tree by calling
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# execute() once with stub deps + a short timeout. Skips platform
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# registration + uvicorn entirely. Returns process exit code.
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from smoke_mode import is_smoke_mode, run_executor_smoke
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if is_smoke_mode():
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exit_code = await run_executor_smoke(executor)
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if hasattr(heartbeat, "stop"):
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try:
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await heartbeat.stop()
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except Exception: # noqa: BLE001
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pass
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raise SystemExit(exit_code)
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# 6b. Restore from pre-stop snapshot if one exists (GH#1391).
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# The snapshot is scrubbed before being written, so secrets are
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# already redacted — restore_state must not re-expose them.
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from lib.pre_stop import read_snapshot
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snapshot = read_snapshot()
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if snapshot:
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try:
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adapter.restore_state(snapshot)
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print(
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f"Pre-stop snapshot restored: task={snapshot.get('current_task', '')!r}, "
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f"uptime={snapshot.get('uptime_seconds', 0)}s"
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)
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except Exception as restore_err:
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print(f"Warning: snapshot restore failed (continuing): {restore_err}")
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# 6c. Swap rich skill metadata into the card now that setup() loaded
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# them. In-place mutation: a2a-sdk's create_agent_card_routes serialises
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# the card on each request, so the route mounted below sees the update.
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# Isolated via card_helpers.enrich_card_skills — a malformed
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# loaded_skills shape (e.g., a future adapter that doesn't follow
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# the .metadata convention) is logged + swallowed instead of
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# propagating up to the outer except, where it would silently
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# degrade an OK boot to the not-configured state.
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from card_helpers import enrich_card_skills
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enrich_card_skills(agent_card, getattr(adapter, "loaded_skills", None))
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adapter_ready = True
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except SystemExit:
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# Smoke-mode exit signal — propagate untouched.
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raise
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except Exception as setup_err: # noqa: BLE001
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adapter_error = f"{type(setup_err).__name__}: {setup_err}"
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print(
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f"WARNING: adapter.setup() failed — workspace will serve agent-card "
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f"but JSON-RPC will return -32603 until configuration is fixed. "
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f"Reason: {adapter_error}",
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flush=True,
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)
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# Heartbeat keeps running so the platform marks the workspace as
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# reachable-but-misconfigured. Operators can then redeploy with the
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# correct env vars without having to chase a crash-loop.
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# 6.5. Initialise Temporal durable execution wrapper (optional). Only
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# meaningful when an executor exists; skipped on misconfigured boots.
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if adapter_ready:
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from builtin_tools.temporal_workflow import create_wrapper as _create_temporal_wrapper
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temporal_wrapper = _create_temporal_wrapper()
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await temporal_wrapper.start()
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# 7. Wrap in A2A.
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#
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# Regression fix (#204): PR #198 tried to wire push_config_store +
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# push_sender to satisfy #175 (push notification capability), but
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# PushNotificationSender is an abstract base class in the a2a-sdk and
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# can't be instantiated directly. Passing it crashed main.py on startup
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# with `TypeError: Can't instantiate abstract class`. Dropped back to
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# DefaultRequestHandler's own defaults — pushNotifications capability
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# in the AgentCard below is still advertised via AgentCapabilities so
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# clients know we COULD do pushes; actually implementing them requires
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# a concrete sender subclass, tracked as a Phase-H follow-up to #175.
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routes = []
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routes.extend(create_agent_card_routes(agent_card))
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if adapter_ready:
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handler = DefaultRequestHandler(
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agent_executor=executor,
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task_store=InMemoryTaskStore(),
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# a2a-sdk 1.x added agent_card as a required positional/keyword
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# argument — it's used internally for capability dispatch (e.g.
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# routing tasks/get historyLength based on the card's protocol
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# version). Pass the same agent_card we registered with the
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# platform so the handler's capability surface matches what the
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# AgentCard advertises.
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agent_card=agent_card,
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)
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# v1: replace A2AStarletteApplication with Starlette route factory.
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# rpc_url is required in a2a-sdk 1.x (was implicit at root in 0.x).
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# Use '/' to match a2a.utils.constants.DEFAULT_RPC_URL — that's also
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# what the platform's a2a_proxy.go POSTs to (it forwards to the
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# workspace's URL without appending a path). Card endpoint stays at
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# the well-known path /.well-known/agent-card.json (handled by
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# create_agent_card_routes default).
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# enable_v0_3_compat=True is the JSON-RPC wire-compat path: clients
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# using v0.3-shaped payloads (`"role": "user"` lowercase + camelCase
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# Pydantic field names) can talk to us without re-deploying.
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routes.extend(create_jsonrpc_routes(request_handler=handler, rpc_url="/", enable_v0_3_compat=True))
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else:
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# Misconfigured: serve the card but reject JSON-RPC with -32603 so
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# canvas surfaces a useful "agent not configured: <reason>" instead
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# of letting requests time out. Handler factory is in its own module
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# so the behavior is unit-testable (workspace/tests/test_not_configured_handler.py).
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from starlette.routing import Route
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from not_configured_handler import make_not_configured_handler
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routes.append(
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Route("/", make_not_configured_handler(adapter_error), methods=["POST"])
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)
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app = Starlette(routes=routes)
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# 8. Register with platform
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# When adapter.setup() failed, advertise via configuration_status so
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# the platform/canvas can render "configured: false, reason: …" instead
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# of a confused "ready but silent" state.
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loaded_skills = getattr(adapter, "loaded_skills", None) or []
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agent_card_dict = {
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"name": config.name,
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"description": config.description,
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"version": config.version,
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"url": workspace_url,
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"skills": [
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{
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"id": s.metadata.id,
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"name": s.metadata.name,
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"description": s.metadata.description,
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"tags": s.metadata.tags,
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}
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for s in loaded_skills
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] if adapter_ready else [
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{"id": n, "name": n, "description": n, "tags": []}
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for n in (config.skills or [])
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],
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"capabilities": {
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"streaming": config.a2a.streaming,
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"pushNotifications": config.a2a.push_notifications,
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},
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"configuration_status": "ready" if adapter_ready else "not_configured",
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**({"configuration_error": adapter_error} if adapter_error else {}),
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}
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async with httpx.AsyncClient(timeout=10.0) as client:
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try:
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resp = await client.post(
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f"{platform_url}/registry/register",
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json={
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"id": workspace_id,
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"url": workspace_url,
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"agent_card": agent_card_dict,
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},
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headers=auth_headers(),
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)
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print(f"Registered with platform: {resp.status_code}")
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# Phase 30.1 — capture the auth token issued at first register.
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# The platform only mints one on first register per workspace,
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# so a subsequent restart gets an empty auth_token and we
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# keep using the on-disk copy from the original issuance.
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if resp.status_code == 200:
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try:
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body = resp.json()
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tok = body.get("auth_token")
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if tok:
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from platform_auth import save_token
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save_token(tok)
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print(f"Saved workspace auth token (prefix={tok[:8]}…)")
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# RFC #2312 PR-F: persist platform_inbound_secret if the
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# platform supplied one. Idempotent — writing the same
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# value over an existing file is harmless. Required for
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# SaaS where there's no persistent /configs volume; on
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# Docker mode it overwrites the value the provisioner
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# already wrote at workspace creation.
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inbound = body.get("platform_inbound_secret")
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if inbound:
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from platform_inbound_auth import save_inbound_secret
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save_inbound_secret(inbound)
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print(f"Saved platform_inbound_secret (prefix={inbound[:8]}…)")
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except Exception as parse_exc:
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print(f"Warning: couldn't parse register response for token: {parse_exc}")
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except Exception as e:
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print(f"Warning: failed to register with platform: {e}")
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# 9. Start heartbeat
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heartbeat.start()
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# 9b. Start skills hot-reload watcher (background task)
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# When a skill file changes the watcher reloads the skill module and calls
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# back into the adapter so the next A2A request uses the updated tools.
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# Skipped on misconfigured boots — adapter has no executor / tool registry
|
|
# to swap into, so reloading skills would NPE on the agent rebuild path.
|
|
if adapter_ready and config.skills:
|
|
try:
|
|
from skill_loader.watcher import SkillsWatcher
|
|
|
|
def _on_skill_reload(updated_skill):
|
|
"""Rebuild the LangGraph agent when a skill changes in-place."""
|
|
if not hasattr(adapter, "loaded_skills"):
|
|
return
|
|
# Replace the matching skill in the adapter's skill list
|
|
adapter.loaded_skills = [
|
|
updated_skill if s.metadata.id == updated_skill.metadata.id else s
|
|
for s in adapter.loaded_skills
|
|
]
|
|
# Rebuild the agent's tool list from updated skills
|
|
if hasattr(adapter, "all_tools") and hasattr(adapter, "system_prompt"):
|
|
from builtin_tools.approval import request_approval
|
|
from builtin_tools.delegation import delegate_task, delegate_task_async, check_task_status
|
|
from builtin_tools.memory import commit_memory, recall_memory
|
|
from builtin_tools.sandbox import run_code
|
|
# Core platform tools mirror adapter_base.all_tools — must
|
|
# match the platform_tools registry names so docs and tools
|
|
# never drift.
|
|
base_tools = [
|
|
delegate_task, delegate_task_async, check_task_status,
|
|
request_approval, commit_memory, recall_memory, run_code,
|
|
]
|
|
skill_tools = []
|
|
for sk in adapter.loaded_skills:
|
|
skill_tools.extend(sk.tools)
|
|
adapter.all_tools = base_tools + skill_tools
|
|
# Rebuild compiled agent so next ainvoke picks up new tools
|
|
try:
|
|
from agent import create_agent
|
|
new_agent = create_agent(
|
|
config.model, adapter.all_tools, adapter.system_prompt
|
|
)
|
|
executor.agent = new_agent
|
|
print(f"Skills hot-reload: '{updated_skill.metadata.id}' reloaded — "
|
|
f"{len(updated_skill.tools)} tool(s)")
|
|
except Exception as rebuild_err:
|
|
print(f"Skills hot-reload: agent rebuild failed: {rebuild_err}")
|
|
|
|
skills_watcher = SkillsWatcher(
|
|
config_path=config_path,
|
|
skill_names=config.skills,
|
|
on_reload=_on_skill_reload,
|
|
current_runtime=runtime,
|
|
)
|
|
asyncio.create_task(skills_watcher.start())
|
|
print(f"Skills hot-reload enabled for: {config.skills}")
|
|
except Exception as e:
|
|
print(f"Warning: skills watcher could not start: {e}")
|
|
|
|
# 10. Run A2A server
|
|
print(f"Workspace {workspace_id} starting on port {port}")
|
|
# Wrap the ASGI app with W3C TraceContext extraction middleware so incoming
|
|
# A2A HTTP requests propagate their trace context into _incoming_trace_context.
|
|
# v1: Starlette app is constructed directly; no build() step needed
|
|
starlette_app = app
|
|
|
|
# Add /transcript route — exposes the most-recent agent session log
|
|
# (claude-code reads ~/.claude/projects/<cwd>/<session>.jsonl). Other
|
|
# runtimes return supported:false.
|
|
from starlette.responses import JSONResponse
|
|
from starlette.routing import Route
|
|
|
|
async def _transcript_handler(request):
|
|
# Require workspace bearer token — the same token issued at registration
|
|
# and stored in /configs/.auth_token. Any container on molecule-monorepo-net
|
|
# could otherwise read the full session log. Closes #287.
|
|
#
|
|
# #328: fail CLOSED when the token file is unavailable. get_token()
|
|
# returns None during the bootstrap window (first register hasn't
|
|
# completed), if /configs/.auth_token was deleted, or on OSError.
|
|
# The old `if expected:` guard treated all three cases as "skip
|
|
# auth" — an unauthenticated container on the same Docker network
|
|
# could read the entire session log during that window. Deny
|
|
# instead. The platform's TranscriptHandler acquires the token
|
|
# during registration, so once the bootstrap completes it always
|
|
# has a valid credential to present.
|
|
from platform_auth import get_token
|
|
if not _transcript_authorized(get_token(), request.headers.get("Authorization", "")):
|
|
return JSONResponse({"error": "unauthorized"}, status_code=401)
|
|
try:
|
|
since = int(request.query_params.get("since", "0"))
|
|
limit = int(request.query_params.get("limit", "100"))
|
|
except (TypeError, ValueError):
|
|
return JSONResponse({"error": "since and limit must be integers"}, status_code=400)
|
|
# Isolate adapter call: misconfigured boots leave the adapter
|
|
# partially-initialised, and a future adapter override of
|
|
# transcript_lines might assume setup() ran. Surface a 503 with
|
|
# a clear reason instead of letting the exception propagate to
|
|
# Starlette's 500 handler — same pattern as the not-configured
|
|
# JSON-RPC route (PR #2756). BaseAdapter.transcript_lines's
|
|
# default returns {"supported": false} so today's 4 adapters
|
|
# never trigger this branch; this is the safety net.
|
|
try:
|
|
result = await adapter.transcript_lines(since=since, limit=limit)
|
|
except Exception as transcript_err: # noqa: BLE001
|
|
return JSONResponse(
|
|
{
|
|
"error": "transcript unavailable",
|
|
"detail": f"{type(transcript_err).__name__}: {transcript_err}",
|
|
},
|
|
status_code=503,
|
|
)
|
|
return JSONResponse(result)
|
|
|
|
starlette_app.add_route("/transcript", _transcript_handler, methods=["GET"])
|
|
|
|
# /internal/* — platform→workspace forward calls (RFC #2312). Auth
|
|
# is the per-workspace platform_inbound_secret in
|
|
# /configs/.platform_inbound_secret, distinct from the outbound
|
|
# workspace_auth_token used by /transcript above.
|
|
from internal_chat_uploads import ingest_handler as _internal_chat_uploads_ingest
|
|
starlette_app.add_route(
|
|
"/internal/chat/uploads/ingest",
|
|
_internal_chat_uploads_ingest,
|
|
methods=["POST"],
|
|
)
|
|
from internal_file_read import file_read_handler as _internal_file_read
|
|
starlette_app.add_route(
|
|
"/internal/file/read",
|
|
_internal_file_read,
|
|
methods=["GET"],
|
|
)
|
|
|
|
built_app = make_trace_middleware(starlette_app)
|
|
|
|
# uvicorn expects the level name in lowercase ("debug" / "info" /
|
|
# "warning" / "error" / "critical"). config.observability.log_level
|
|
# is uppercased at parse time (config.py.load_config) for the
|
|
# Python ``logging`` module's convention; lower it here so both
|
|
# consumers get the form they expect from one source of truth.
|
|
# An ``LOG_LEVEL`` env var still wins as an ops-side debugging
|
|
# override — set it on the workspace process to bypass YAML
|
|
# without a config edit + restart cycle.
|
|
uvicorn_log_level = os.environ.get("LOG_LEVEL", config.observability.log_level).lower()
|
|
server_config = uvicorn.Config(
|
|
built_app,
|
|
host="0.0.0.0",
|
|
port=port,
|
|
log_level=uvicorn_log_level,
|
|
)
|
|
server = uvicorn.Server(server_config)
|
|
|
|
# 10b. Schedule initial_prompt self-message after server is ready.
|
|
# Only runs on first boot — creates a marker file to prevent re-execution on restart.
|
|
# Skipped on misconfigured boots: the self-message would route through the
|
|
# platform back to /, hit the -32603 not-configured handler, and consume
|
|
# the marker for a fire that can't actually run. Wait until the operator
|
|
# fixes credentials and the workspace redeploys with adapter_ready=True.
|
|
initial_prompt_task = None
|
|
initial_prompt_marker = resolve_initial_prompt_marker(config_path)
|
|
if adapter_ready and config.initial_prompt and not os.path.exists(initial_prompt_marker):
|
|
# Write the marker UP FRONT (#71): if the prompt later crashes or
|
|
# times out, we do NOT replay on next boot — that created a
|
|
# ProcessError cascade where every message kept crashing. Operators
|
|
# can always re-send via chat. Log loudly if the marker write
|
|
# fails so the situation is visible.
|
|
if not mark_initial_prompt_attempted(initial_prompt_marker):
|
|
print(
|
|
f"Initial prompt: WARNING — could not write marker at "
|
|
f"{initial_prompt_marker}; this boot may replay if it crashes.",
|
|
flush=True,
|
|
)
|
|
async def _send_initial_prompt():
|
|
"""Wait for server to be ready, then send initial_prompt as self-message."""
|
|
# Wait for the A2A server to accept connections.
|
|
# Use the SDK's own constant for the well-known path so this
|
|
# probe and the route mounted by create_agent_card_routes()
|
|
# never drift apart. Pre-fix this hardcoded the pre-1.x
|
|
# well-known path string; a2a-sdk 1.x renamed it (the
|
|
# canonical value lives in a2a.utils.constants now), so
|
|
# the probe got 404 every attempt and fell through to
|
|
# "server not ready after 30s, skipping" even though the
|
|
# server was actually serving fine. Net effect: every
|
|
# workspace silently dropped its `initial_prompt`.
|
|
from a2a.utils.constants import AGENT_CARD_WELL_KNOWN_PATH
|
|
ready = False
|
|
for attempt in range(30):
|
|
await asyncio.sleep(1)
|
|
try:
|
|
async with httpx.AsyncClient(timeout=5.0) as client:
|
|
resp = await client.get(f"http://127.0.0.1:{port}{AGENT_CARD_WELL_KNOWN_PATH}")
|
|
if resp.status_code == 200:
|
|
ready = True
|
|
break
|
|
except Exception:
|
|
continue
|
|
|
|
if not ready:
|
|
print("Initial prompt: server not ready after 30s, skipping", flush=True)
|
|
return
|
|
|
|
# Send initial prompt through the platform A2A proxy (not directly to self).
|
|
# The proxy logs an a2a_receive with source_id=NULL (canvas-style),
|
|
# broadcasts A2A_RESPONSE via WebSocket so the chat shows both the
|
|
# prompt (as user message) and the response (as agent message).
|
|
# Uses urllib in a thread to avoid asyncio/httpx streaming hangs.
|
|
import json as _json
|
|
import urllib.request
|
|
|
|
def _do_send_sync():
|
|
import time as _time
|
|
payload = _json.dumps({
|
|
"method": "message/send",
|
|
"params": {
|
|
"message": {
|
|
"role": "user",
|
|
"messageId": f"initial-{_uuid.uuid4().hex[:8]}",
|
|
"parts": [{"kind": "text", "text": config.initial_prompt}],
|
|
},
|
|
},
|
|
}).encode()
|
|
|
|
# #220: include platform bearer token so the request isn't
|
|
# silently rejected once any workspace has a live token on
|
|
# file. Without this, initial_prompt 401s in multi-tenant
|
|
# mode exactly like /registry/register did in #215.
|
|
# X-Workspace-ID via self_source_headers() so the platform
|
|
# tags the row source=agent — without it the canvas's
|
|
# My Chat tab renders the initial_prompt as if the user
|
|
# had typed it. See platform_auth.py for the full
|
|
# explanation.
|
|
headers = {
|
|
"Content-Type": "application/json",
|
|
**self_source_headers(workspace_id),
|
|
}
|
|
|
|
# Retry with backoff — the platform proxy may not be able to
|
|
# reach us yet (container networking takes a moment to settle).
|
|
max_retries = 5
|
|
for attempt in range(max_retries):
|
|
try:
|
|
req = urllib.request.Request(
|
|
f"{platform_url}/workspaces/{workspace_id}/a2a",
|
|
data=payload,
|
|
headers=headers,
|
|
)
|
|
with urllib.request.urlopen(req, timeout=600) as resp:
|
|
resp.read()
|
|
print(f"Initial prompt: completed (status={resp.status})", flush=True)
|
|
break
|
|
except Exception as e:
|
|
if attempt < max_retries - 1:
|
|
delay = 2 ** attempt # 1, 2, 4, 8, 16 seconds
|
|
print(f"Initial prompt: attempt {attempt + 1} failed ({e}), retrying in {delay}s...", flush=True)
|
|
_time.sleep(delay)
|
|
else:
|
|
print(f"Initial prompt: failed after {max_retries} attempts — {e}", flush=True)
|
|
return
|
|
|
|
# Marker was already written up front (#71). Nothing to do here.
|
|
|
|
print("Initial prompt: sending via platform proxy...", flush=True)
|
|
loop = asyncio.get_event_loop()
|
|
loop.run_in_executor(None, _do_send_sync)
|
|
|
|
initial_prompt_task = asyncio.create_task(_send_initial_prompt())
|
|
|
|
# 10c. Idle loop — reflection-on-completion / backlog-pull pattern.
|
|
# Fires config.idle_prompt every config.idle_interval_seconds while the
|
|
# workspace has no active task. This turns every role from "waits for cron"
|
|
# into "self-wakes when idle" — the Hermes/Letta shape from today's
|
|
# multi-framework survey (see docs/ecosystem-watch.md). Cost collapses to
|
|
# event-driven in practice: the idle check is local (no LLM call, just
|
|
# heartbeat.active_tasks==0), and the prompt only fires when there's
|
|
# actually nothing to do. Gated on idle_prompt being non-empty so existing
|
|
# workspaces upgrade opt-in — set idle_prompt in org.yaml defaults or
|
|
# per-workspace to enable.
|
|
idle_loop_task = None
|
|
# Skipped on misconfigured boots — the self-fire would route to the
|
|
# -32603 handler in a tight loop and consume cycles for no useful work.
|
|
if adapter_ready and config.idle_prompt:
|
|
# Idle-fire HTTP timeout. Kept tight relative to the fire cadence so a
|
|
# hung platform doesn't accumulate dangling requests — a fire that
|
|
# takes longer than the idle interval itself is almost certainly stuck.
|
|
IDLE_FIRE_TIMEOUT_SECONDS = max(60, min(300, config.idle_interval_seconds))
|
|
# Initial settle delay — never longer than 60s so cold-start races
|
|
# don't stall the first fire, and never shorter than the configured
|
|
# interval (short intervals shouldn't fire instantly on boot either).
|
|
IDLE_INITIAL_SETTLE_SECONDS = min(config.idle_interval_seconds, 60)
|
|
|
|
async def _run_idle_loop():
|
|
"""Self-sends config.idle_prompt periodically when the workspace is idle."""
|
|
await asyncio.sleep(IDLE_INITIAL_SETTLE_SECONDS)
|
|
|
|
import json as _json
|
|
from urllib import request as _urlreq, error as _urlerr
|
|
|
|
while True:
|
|
try:
|
|
await asyncio.sleep(config.idle_interval_seconds)
|
|
except asyncio.CancelledError:
|
|
return
|
|
|
|
# Local idle check — no platform API call, no LLM call.
|
|
# heartbeat.active_tasks == 0 means no in-flight work.
|
|
if heartbeat.active_tasks > 0:
|
|
continue
|
|
|
|
# Self-post the idle prompt via the platform A2A proxy (same
|
|
# path as initial_prompt). The agent's own concurrency control
|
|
# rejects if the workspace becomes busy between this check and
|
|
# the post — that's the expected safety valve.
|
|
payload = _json.dumps({
|
|
"method": "message/send",
|
|
"params": {
|
|
"message": {
|
|
"role": "user",
|
|
"messageId": f"idle-{_uuid.uuid4().hex[:8]}",
|
|
"parts": [{"kind": "text", "text": config.idle_prompt}],
|
|
},
|
|
},
|
|
}).encode()
|
|
|
|
def _post_sync():
|
|
# Returns (status_code, error_type) so the caller logs the
|
|
# actual outcome instead of a bare "post failed" line.
|
|
# #220: include auth_headers() on every idle fire. Without
|
|
# this, the idle loop 401s in multi-tenant mode.
|
|
# self_source_headers() adds X-Workspace-ID so the
|
|
# platform classifies the idle fire as source=agent
|
|
# rather than user-typed canvas input.
|
|
headers = {
|
|
"Content-Type": "application/json",
|
|
**self_source_headers(workspace_id),
|
|
}
|
|
try:
|
|
req = _urlreq.Request(
|
|
f"{platform_url}/workspaces/{workspace_id}/a2a",
|
|
data=payload,
|
|
headers=headers,
|
|
)
|
|
with _urlreq.urlopen(req, timeout=IDLE_FIRE_TIMEOUT_SECONDS) as resp:
|
|
resp.read()
|
|
return resp.status, None
|
|
except _urlerr.HTTPError as e:
|
|
return e.code, type(e).__name__
|
|
except _urlerr.URLError as e:
|
|
return None, f"URLError: {e.reason}"
|
|
except Exception as e: # pragma: no cover — catch-all safety net
|
|
return None, type(e).__name__
|
|
|
|
print(
|
|
f"Idle loop: firing (active_tasks=0, interval={config.idle_interval_seconds}s, "
|
|
f"timeout={IDLE_FIRE_TIMEOUT_SECONDS}s)",
|
|
flush=True,
|
|
)
|
|
loop_ref = asyncio.get_running_loop()
|
|
|
|
def _log_result(future):
|
|
try:
|
|
status, err = future.result()
|
|
if err:
|
|
print(
|
|
f"Idle loop: post failed — status={status} err={err}",
|
|
flush=True,
|
|
)
|
|
else:
|
|
print(f"Idle loop: post ok status={status}", flush=True)
|
|
except Exception as e: # pragma: no cover
|
|
print(f"Idle loop: executor callback crashed — {e}", flush=True)
|
|
|
|
fut = loop_ref.run_in_executor(None, _post_sync)
|
|
fut.add_done_callback(_log_result)
|
|
|
|
idle_loop_task = asyncio.create_task(_run_idle_loop())
|
|
|
|
try:
|
|
await server.serve()
|
|
finally:
|
|
# 10d. Pre-stop serialization — GH#1391.
|
|
# Capture in-memory state before the container exits so it survives
|
|
# intentional pause and unplanned restart. All content is scrubbed
|
|
# via lib.snapshot_scrub before being written to the config volume.
|
|
try:
|
|
from lib.pre_stop import build_snapshot, write_snapshot
|
|
adapter_state = adapter.pre_stop_state() if adapter else {}
|
|
snapshot = build_snapshot(heartbeat, adapter_state)
|
|
write_snapshot(snapshot)
|
|
except Exception as pre_stop_err:
|
|
print(f"Warning: pre-stop serialization failed (continuing): {pre_stop_err}")
|
|
|
|
# Cancel initial prompt if still running
|
|
if initial_prompt_task and not initial_prompt_task.done():
|
|
initial_prompt_task.cancel()
|
|
# Cancel idle loop if running
|
|
if idle_loop_task and not idle_loop_task.done():
|
|
idle_loop_task.cancel()
|
|
# Gracefully stop the Temporal worker background task on shutdown
|
|
await temporal_wrapper.stop()
|
|
|
|
|
|
def main_sync(): # pragma: no cover
|
|
"""Synchronous entry point for the `molecule-runtime` console script.
|
|
|
|
Declared in scripts/build_runtime_package.py as the wheel's entry-point
|
|
target (`molecule-runtime = "molecule_runtime.main:main_sync"`). Removed
|
|
silently during the pre-monorepo consolidation, which broke every
|
|
workspace startup against 0.1.16/0.1.17/0.1.18 with `ImportError:
|
|
cannot import name 'main_sync'`. The .github/workflows/runtime-pin-compat.yml
|
|
smoke step is the regression gate.
|
|
"""
|
|
asyncio.run(main())
|
|
|
|
|
|
if __name__ == "__main__": # pragma: no cover
|
|
main_sync()
|