FrameBridge 0.3.1 community source release
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"""Original FBPAIR identity and outbound protocol for an explicitly enrolled node."""
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from __future__ import annotations
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import hashlib
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import importlib
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import json
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import os
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import socket
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import time
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import uuid
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from pathlib import Path
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from . import broker
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class NodeError(ValueError):
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pass
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def _original(name):
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broker.original_modules()
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return importlib.import_module("framebridge_linux_chatgpt." + name)
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def _write_json(path, value):
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path.parent.mkdir(parents=True, exist_ok=True, mode=0o700)
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temporary = path.with_name("." + path.name + "." + uuid.uuid4().hex + ".tmp")
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fd = os.open(str(temporary), os.O_WRONLY | os.O_CREAT | os.O_EXCL | os.O_NOFOLLOW, 0o600)
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try:
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with os.fdopen(fd, "w") as stream:
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json.dump(value, stream, indent=2, sort_keys=True, allow_nan=False)
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stream.write("\n")
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stream.flush()
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os.fsync(stream.fileno())
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os.replace(temporary, path)
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finally:
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if temporary.exists():
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temporary.unlink()
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def _context(state_dir=None, create=False, node_label=None):
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state = broker.state_path(state_dir)
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config = broker._config(state)
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label = node_label or config.get("name") or socket.gethostname()
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if not isinstance(label, str) or broker._LABEL.fullmatch(label) is None or label.casefold() == "local":
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raise NodeError("NODE_LABEL_INVALID")
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ctx = _original("seed_core").SeedContext(state_dir=state / "node", config_dir=state / "node/config")
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identity = ctx.load_identity()
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if identity:
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node_id = identity.get("node_id")
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if config.get("node_id") and config["node_id"] != node_id:
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raise NodeError("NODE_IDENTITY_CONFIG_MISMATCH")
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if create and identity.get("hostname") != label:
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raise NodeError("NODE_IDENTITY_LABEL_MISMATCH")
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elif create:
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node_id = config.get("node_id") or str(uuid.uuid4())
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try:
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if str(uuid.UUID(node_id)) != node_id:
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raise ValueError
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except (ValueError, TypeError, AttributeError):
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raise NodeError("NODE_ID_INVALID") from None
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crypto = _original("node_identity").ensure_node_keypair(ctx.state_dir,
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comment="framebridge-" + node_id[:8])
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identity = {"schema": 2, "node_id": node_id, "node_id_short": node_id.replace("-", "")[:8],
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"node_host_id": crypto["host_id"], "node_public_jwk": crypto["public_jwk"],
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"node_public_key_sha256": crypto["public_key_sha256"], "hostname": label,
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"created_at": time.strftime("%Y-%m-%dT%H:%M:%SZ", time.gmtime())}
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_write_json(ctx.identity_path, identity)
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else:
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raise NodeError("NODE_IDENTITY_MISSING")
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if create and (config.get("node_id") != node_id or config.get("name") != label):
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config.update(schema=1, node_id=node_id, name=label)
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_write_json(state / "config.json", config)
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return state, config, ctx, identity
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def _poster(state):
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def post(url, value, *, timeout=10):
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return broker.post_json(url, value, state_dir=state, timeout=timeout)
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return post
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def enroll(broker_url, node_label, state_dir=None):
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url = broker.validate_endpoint(broker_url)
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state, config, ctx, identity = _context(state_dir, create=True, node_label=node_label)
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store = _original("pairing").PairingStore(ctx.state_dir)
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existing = store.load()
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if existing.get("state") in {"pair_requested", "paired"}:
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raise NodeError("NODE_ENROLLMENT_ALREADY_EXISTS")
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manifest = _original("seed_capabilities").list_capabilities()
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digest = hashlib.sha256(json.dumps(manifest, sort_keys=True, separators=(",", ":")).encode()).hexdigest()
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result = _original("pairing_client").start_pairing(
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state_dir=ctx.state_dir, node_id=identity["node_id"], node_label=node_label,
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node_host_id=identity["node_host_id"], public_jwk=identity["node_public_jwk"],
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provider="chatgpt", capability_manifest_sha256=digest, broker_base_url=url,
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allow_insecure_dev=url.startswith("http://"), poster=_poster(state))
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config["broker_url"] = url
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_write_json(state / "config.json", config)
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return dict(result, node_id=identity["node_id"], node_label=node_label,
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fingerprint=identity["node_public_key_sha256"])
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def poll_enrollment(state_dir=None):
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state, config, ctx, identity = _context(state_dir)
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url = broker.validate_endpoint(config.get("broker_url", ""))
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store = _original("pairing").PairingStore(ctx.state_dir)
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pairing = store.load()
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if pairing.get("broker_base_url") and pairing["broker_base_url"].rstrip("/") != url:
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raise NodeError("PAIRING_BROKER_CONFIG_MISMATCH")
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if pairing.get("state") == "paired" and pairing.get("broker_confirm_required") is not True:
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return status(state)
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result = _original("pairing_client").poll_pairing(
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state_dir=ctx.state_dir, allow_insecure_dev=url.startswith("http://"), poster=_poster(state))
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pairing = store.load()
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if pairing.get("state") == "paired":
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_write_json(ctx.config_path, {"schema": 1, "provider": "chatgpt", "pairing": {
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"state": "paired", "broker_base_url": url,
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"broker_confirm_required": pairing.get("broker_confirm_required") is True}})
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return dict(result, node_id=identity["node_id"])
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def status(state_dir=None):
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try:
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state, config, ctx, identity = _context(state_dir)
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except NodeError as exc:
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return {"ok": False, "error": str(exc), "state": "not_enrolled"}
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pairing = _original("pairing").PairingStore(ctx.state_dir).load()
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return {"ok": True, "node_id": identity["node_id"], "node_label": identity["hostname"],
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"fingerprint": identity["node_public_key_sha256"],
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"state": pairing.get("state", "not_paired"),
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"broker_confirm_required": pairing.get("broker_confirm_required") is True,
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"broker_url": config.get("broker_url"), "agent_state": "not_checked"}
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def dispatch_request(request, adapter_request=None, state_dir=None):
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"""Recheck binding and authorization before invoking the real local Original adapter."""
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if not isinstance(request, dict):
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return {"ok": False, "error": "REQUEST_INVALID"}
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try:
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_, _, _, identity = _context(state_dir)
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if request.get("node_id") != identity["node_id"]:
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raise NodeError("REQUEST_NODE_MISMATCH")
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expires = request.get("expires_at")
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if isinstance(expires, bool) or not isinstance(expires, (int, float)) or not expires > time.time():
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raise NodeError("REQUEST_EXPIRED")
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rid = request.get("request_id")
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if not isinstance(rid, str) or not rid or len(rid) > 80:
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raise NodeError("REQUEST_ID_INVALID")
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operation = request.get("operation")
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if operation:
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payload = broker._admin_payload(operation, request.get("payload"))
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payload = dict(payload, version=1, mode="EXEC")
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if operation == "admin.cua":
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payload["request_type"] = "cua"
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if adapter_request is None:
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from .runtime import adapter_request
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result = adapter_request(payload)
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if not isinstance(result, dict):
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raise NodeError("ADAPTER_RESPONSE_INVALID")
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result = dict(result, mcp_job_id=payload["job_id"])
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if operation == "admin.exec":
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result["mcp_script_sha256"] = payload["sha256"]
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if payload.get("include_stdout") is not True:
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result.update(stdout="", stdout_sanitized=False, stdout_truncated=False,
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stdout_omitted_reason="NOT_REQUESTED")
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return result
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cap, args = request.get("capability"), request.get("args")
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if cap not in broker.original_modules().READ_CAPS or not isinstance(args, dict):
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raise NodeError("CAPABILITY_NOT_ALLOWED")
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value = _original("seed_capabilities").execute_capability(cap, args)
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if isinstance(value, dict) and value.get("ok") is False:
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return {"ok": False, "capability": cap, "error": "READ_CAPABILITY_FAILED"}
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return {"ok": True, "capability": cap, "result": value}
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except (NodeError, broker.BrokerError) as exc:
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return {"ok": False, "error": str(exc)}
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except Exception:
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return {"ok": False, "error": "NODE_DISPATCH_FAILED"}
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def run(state_dir=None, once=False):
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state, config, ctx, identity = _context(state_dir)
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url = broker.validate_endpoint(config.get("broker_url", ""))
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pairing = _original("pairing").PairingStore(ctx.state_dir).load()
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if pairing.get("state") != "paired" or pairing.get("broker_confirm_required") is True:
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raise NodeError("NODE_NOT_CONFIRMED")
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if pairing.get("node_id") != identity["node_id"] or pairing.get("broker_base_url", "").rstrip("/") != url:
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raise NodeError("PAIRING_BINDING_MISMATCH")
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outbound = _original("outbound_agent")
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while True:
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poll = broker.post_json(url + "/fbpair/v1/node/poll",
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outbound._signed_envelope(ctx, "node.poll", {}), state_dir=state)
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if poll.get("ok") is not True:
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raise NodeError("NODE_POLL_REJECTED")
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req = poll.get("request")
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result = {"ok": True, "idle": True}
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if isinstance(req, dict):
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value = dispatch_request(req, state_dir=state)
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posted = broker.post_json(url + "/fbpair/v1/node/result", outbound._signed_envelope(
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ctx, "node.result", {"request_id": req.get("request_id"), "result": value}), state_dir=state)
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if posted.get("ok") is not True:
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raise NodeError("NODE_RESULT_REJECTED")
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result = {"ok": True, "idle": False, "request_id": req.get("request_id")}
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if once:
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return result
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time.sleep(1)
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