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aios/active-runtime/app/task_plane/api.py
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918 lines
38 KiB
Python

"""Task Plane HTTP API implementation (stdlib-only)."""
from __future__ import annotations
import json
import os
import time
import uuid
import urllib.parse
from http.server import BaseHTTPRequestHandler, ThreadingHTTPServer
from datetime import datetime, timezone
from typing import Any, Callable
from .delegation import DelegationEngine
from .errors import (
ConflictError,
ForbiddenError,
NotFoundError,
PayloadTooLargeError,
TaskPlaneHTTPError,
UnauthorizedError,
ValidationError,
)
from .evidence import EvidenceService
from .journal import TaskJournal
from .lease import LeaseManager
from .lineage_store import TaskLineagePolicy, TaskPlaneLineageCoordinator
from .mission import MissionAuthority
from .models import (
EvidenceEnvelope,
ResultEnvelope,
TaskPlan,
TaskRecord,
iso8601_now,
contains_secret_text,
validate_identifier,
)
from .policy import PolicyEngine
from .root_action_consumer import (
RootActionConsumer,
RootActionExecutor,
RootActionRunResult,
)
from .store import TaskPlaneStore
from .worker_registry import WorkerRegistry
def _json_payload(data: dict[str, Any], status: int = 200) -> tuple[int, bytes]:
body = json.dumps(data, ensure_ascii=False).encode("utf-8")
return status, body
def _bounded_int(value: Any, name: str, minimum: int, maximum: int) -> int:
try:
number = int(value)
except (TypeError, ValueError) as exc:
raise ValidationError(f"invalid {name}") from exc
if not minimum <= number <= maximum:
raise ValidationError(f"invalid {name}")
return number
class TaskPlaneService:
def __init__(
self,
store: TaskPlaneStore,
policy: PolicyEngine | None = None,
*,
lineage_policy: TaskLineagePolicy | None = None,
mission_authority: MissionAuthority | None = None,
root_action_executor: RootActionExecutor | None = None,
):
self.store = store
self.policy = policy or PolicyEngine(
execution_enabled=False,
identity_capabilities={
"anon": {"task.creator", "task.read", "task.audit"}
},
)
self.journal = TaskJournal(store)
self.lease = LeaseManager(store)
self.workers = WorkerRegistry(store)
self.evidence = EvidenceService(store)
self.delegation = DelegationEngine(store)
if mission_authority is not None and mission_authority.store is not store:
raise ValueError("mission authority must use the TaskPlane store")
self.missions = mission_authority
effective_lineage_policy = lineage_policy
if mission_authority is not None:
effective_lineage_policy = (
lineage_policy
or TaskLineagePolicy(
principal_bindings=(), acceptance_evaluators={}
)
).with_acceptance_evaluator_resolver(
mission_authority.resolve_acceptance_evaluator
)
self.lineage = (
TaskPlaneLineageCoordinator(store, effective_lineage_policy)
if effective_lineage_policy is not None
else None
)
self.root_actions = (
RootActionConsumer(
store,
plan_builder=lambda review: mission_authority.build_root_action_plan(
review=review, lineage=self.lineage
),
rereviewer=lambda plan, receipt: mission_authority.rereview_root_action(
plan=plan,
execution_receipt=receipt,
lineage=self.lineage,
),
executor=root_action_executor,
)
if mission_authority is not None and self.lineage is not None
else None
)
self.store.probe_attestation_verifier = self.policy.probe_attestation_verifier
def consume_one_root_action(
self,
*,
consumer_id: str,
now: datetime | None = None,
lease_seconds: int = 60,
) -> RootActionRunResult:
if self.root_actions is None:
raise ForbiddenError("root action consumer is not configured")
return self.root_actions.run_once(
consumer_id=consumer_id,
now=now or datetime.now(tz=timezone.utc),
lease_seconds=lease_seconds,
)
def create_mission(
self,
body: dict[str, Any],
idempotency_key: str | None,
*,
actor_identity: str | None,
) -> dict[str, Any]:
if self.missions is None or self.lineage is None:
raise ForbiddenError("mission authority is not configured")
if actor_identity is None:
raise ForbiddenError("mission creation requires authenticated identity")
if set(body) != {"goal_slug", "original_acceptance"}:
raise ValidationError(
"mission body requires only goal_slug and original_acceptance"
)
self.policy.assert_allowed("create", actor_identity)
mission = self.missions.create_mission(
goal_slug=body["goal_slug"],
original_acceptance=body["original_acceptance"],
idempotency_key=idempotency_key,
authenticated_identity=actor_identity,
lineage=self.lineage,
)
return {
**mission.to_dict(),
"root_task": self.store.get_task(mission.root_task_id).to_dict(),
}
def get_mission(
self, mission_id: str, *, actor_identity: str | None
) -> dict[str, Any]:
if self.missions is None:
raise ForbiddenError("mission authority is not configured")
if actor_identity is None:
raise ForbiddenError("mission read requires authenticated identity")
self.policy.assert_allowed("read", actor_identity)
mission = self.missions.get_mission(
mission_id, authenticated_identity=actor_identity
)
return {
**mission.to_dict(),
"root_task": self.store.get_task(mission.root_task_id).to_dict(),
}
def delegate_mission(
self,
parent_task_id: str,
body: dict[str, Any],
idempotency_key: str | None,
*,
actor_identity: str | None,
) -> dict[str, Any]:
"""Admit one server-identified child under an owned canonical Mission."""
if self.missions is None or self.lineage is None:
raise ForbiddenError("mission authority is not configured")
if actor_identity is None:
raise ForbiddenError("mission delegation requires authenticated identity")
# Mission delegation is an admission operation. It deliberately does
# not enable the worker execution actions guarded by execution_enabled.
self.policy.assert_allowed("create", actor_identity)
granted = set(
self.policy.identity_capabilities.get(
actor_identity,
self.policy.identity_capabilities.get("*", set()),
)
)
if "task.delegate" not in granted:
raise ForbiddenError("action delegate not permitted")
child = self.missions.delegate_child(
parent_task_id=parent_task_id,
body=body,
idempotency_key=idempotency_key,
authenticated_identity=actor_identity,
lineage=self.lineage,
delegation=self.delegation,
)
return child.to_dict()
def attach_legacy_attachment(
self,
mission_id: str,
body: dict[str, Any],
idempotency_key: str | None,
*,
actor_identity: str | None,
) -> dict[str, Any]:
if self.missions is None:
raise ForbiddenError("mission authority is not configured")
if actor_identity is None:
raise ForbiddenError("legacy attachment requires authenticated identity")
self.policy.assert_allowed("create", actor_identity)
granted = set(
self.policy.identity_capabilities.get(
actor_identity, self.policy.identity_capabilities.get("*", set())
)
)
if "task.delegate" not in granted:
raise ForbiddenError("action delegate not permitted")
return self.missions.attach_legacy(
mission_id=mission_id,
body=body,
idempotency_key=idempotency_key,
authenticated_identity=actor_identity,
)
def get_legacy_attachment(
self,
mission_id: str,
attachment_id: str,
*,
actor_identity: str | None,
) -> dict[str, Any]:
if self.missions is None:
raise ForbiddenError("mission authority is not configured")
if actor_identity is None:
raise ForbiddenError("legacy attachment read requires authenticated identity")
self.policy.assert_allowed("read", actor_identity)
return self.missions.get_legacy_attachment(
mission_id=mission_id,
attachment_id=attachment_id,
authenticated_identity=actor_identity,
)
def create_task(
self,
body: dict[str, Any],
idempotency_key: str | None = None,
*,
actor_identity: str | None = None,
) -> dict[str, Any]:
if body.get("parent_task_id"):
raise ForbiddenError("child tasks must use the delegate endpoint")
issuer = body.get("issuer", {})
if actor_identity is not None:
if issuer and (
not isinstance(issuer, dict) or issuer.get("id") != actor_identity
):
raise ForbiddenError("issuer identity mismatch")
body = dict(body)
body["issuer"] = {"type": "authenticated", "id": actor_identity}
actor = actor_identity or (
issuer.get("id", "anon") if isinstance(issuer, dict) else "anon"
)
self.policy.assert_allowed("create", actor)
try:
plan = TaskPlan.from_dict(body)
except (TypeError, ValueError) as exc:
raise ValidationError("invalid task plan") from exc
if self.lineage is not None:
if actor_identity is None:
raise ForbiddenError("lineage admission requires authenticated identity")
task = self.lineage.create_root(
plan=plan,
authenticated_identity=actor_identity,
request_digest=self.lineage._request_digest(body),
idempotency_key=idempotency_key,
)
else:
task = self.store.create_task_with_event(
plan, idempotency_key=idempotency_key
)
return task.to_dict()
def _can_read_mission_task(self, task, actor: str | None) -> bool:
# Every service sharing the store must honor persisted Mission ownership,
# including a legacy launcher that has no Mission authority configured.
if self.missions is not None:
return self.missions.can_read_task(
task, authenticated_identity=actor or ""
)
with self.store._lock:
return self.store.conn.execute(
"SELECT 1 FROM task_missions WHERE root_task_id=?",
(task.root_task_id,),
).fetchone() is None
def _assert_mission_read(self, task, actor: str | None) -> None:
if not self._can_read_mission_task(task, actor):
raise ForbiddenError("mission task requires its configured owner authority")
def list_tasks(self, actor: str | None = None) -> list[dict[str, Any]]:
if actor is not None:
self.policy.assert_allowed("read", actor)
tasks = self.store.list_tasks()
tasks = [task for task in tasks if self._can_read_mission_task(task, actor)]
return [task.to_dict(include_task=False) for task in tasks]
def get_task(self, task_id: str, actor: str | None = None) -> dict[str, Any]:
task = self.store.get_task(task_id)
self._assert_mission_read(task, actor)
if actor is not None:
self.policy.assert_allowed("read", actor, task=task)
if self.missions is not None and self.missions.manages_root(
task.root_task_id
):
self.missions.assert_task_read(
task, authenticated_identity=actor
)
return task.to_dict()
def get_worker(self, worker_id: str, actor: str | None = None) -> dict[str, Any]:
if actor is not None:
self.policy.assert_allowed("read", actor)
return self.workers.get(worker_id).to_dict()
def list_workers(self, actor: str | None = None) -> list[dict[str, Any]]:
if actor is not None:
self.policy.assert_allowed("read", actor)
return [w.to_dict() for w in self.workers.list()]
def register_worker(self, body: dict[str, Any]) -> dict[str, Any]:
actor = str(body.get("actor_identity") or body.get("identity") or "")
is_admin = actor in self.policy.admin_identities
try:
existing = self.store.get_worker(str(body.get("worker_id") or ""))
except NotFoundError:
existing = None
if existing is not None and str(body.get("identity") or "") != existing.identity:
raise ConflictError("worker identity takeover rejected")
self.policy.assert_readonly_worker_registration(actor, body)
self.policy.assert_allowed(
"worker.admin" if is_admin else "worker.register", actor
)
try:
worker = self.workers.register(
body,
actor_identity=actor,
is_admin=is_admin,
expected_revision=body.get("expected_revision"),
)
except (TypeError, ValueError, KeyError) as exc:
raise ValidationError("invalid worker registration") from exc
return worker.to_dict()
def worker_heartbeat(self, worker_id: str, payload: dict[str, Any]) -> dict[str, Any]:
interval = payload.get("heartbeat_interval_seconds")
actor = str(payload.get("actor_identity") or "")
self.policy.assert_readonly_worker_binding(actor, worker_id)
self.policy.assert_allowed("worker.register", actor)
return self.workers.heartbeat(
worker_id,
heartbeat_interval_seconds=interval,
actor_identity=actor,
expected_revision=payload.get("expected_revision"),
).to_dict()
def disable_worker(self, worker_id: str, payload: dict[str, Any]) -> dict[str, Any]:
actor = str(payload.get("actor_identity") or "")
self.policy.assert_allowed("worker.admin", actor)
return self.store.disable_worker(
worker_id,
actor_identity=actor,
expected_revision=int(payload.get("expected_revision")),
reason=str(payload.get("reason") or "disabled by administrator"),
).to_dict()
def restore_worker(self, worker_id: str, payload: dict[str, Any]) -> dict[str, Any]:
actor = str(payload.get("actor_identity") or "")
self.policy.assert_allowed("worker.admin", actor)
return self.store.restore_worker(
worker_id,
actor_identity=actor,
expected_revision=int(payload.get("expected_revision")),
).to_dict()
def claim(self, task_id: str, body: dict[str, Any]) -> dict[str, Any]:
actor = body.get("actor_identity") or body.get("worker_identity") or "worker"
self.policy.assert_allowed("claim", actor)
worker_id = body.get("worker_id")
if not worker_id:
raise ValidationError("worker_id required")
task = self.store.get_task(task_id)
self.policy.assert_readonly_worker_binding(actor, str(worker_id))
self.policy.assert_allowed("claim", actor, task=task)
lease_seconds = _bounded_int(
body.get("lease_seconds", 30), "lease_seconds", 1, 3600
)
claim = self.lease.claim(
task_id=task_id,
worker_id=worker_id,
worker_identity=actor,
lease_seconds=lease_seconds,
expected_revision=task.revision,
operation_digest=task.task_plan.operation_digest(),
)
return {"claim_id": claim.claim_id, **claim.to_dict()}
def heartbeat(self, task_id: str, body: dict[str, Any]) -> dict[str, Any]:
claim_id = body.get("claim_id")
if not claim_id:
raise ValidationError("claim_id required")
actor = body.get("actor_identity") or body.get("worker_identity") or "worker"
task = self.store.get_task(task_id)
claim = self.store.get_claim(claim_id)
self.policy.assert_readonly_worker_binding(actor, claim.worker_id)
self.policy.assert_allowed("heartbeat", actor, task=task)
if claim.worker_identity != actor:
raise ForbiddenError("claim identity mismatch")
lease_seconds = _bounded_int(
body.get("lease_seconds", 30), "lease_seconds", 1, 3600
)
claim = self.lease.heartbeat(task_id, claim_id, lease_seconds)
return {"claim_id": claim_id, "lease_until": claim.lease_until}
def progress(self, task_id: str, body: dict[str, Any]) -> dict[str, Any]:
claim_id = body.get("claim_id")
if not claim_id:
raise ValidationError("claim_id required")
actor = body.get("actor_identity") or body.get("worker_identity") or "worker"
progress = body.get("progress")
stage = body.get("stage", "RUNNING")
message = body.get("message")
if progress is None:
raise ValidationError("progress required")
task = self.store.get_task(task_id)
claim = self.store.get_claim(claim_id)
self.policy.assert_readonly_worker_binding(actor, claim.worker_id)
self.policy.assert_allowed("progress", actor, task=task)
if task.task_plan.data_classification == "credential-secret":
if message not in {None, ""} or contains_secret_text(stage):
raise ValidationError(
"credential-secret progress must contain metadata only"
)
lease_seconds = _bounded_int(
body.get("lease_seconds", 30), "lease_seconds", 1, 3600
)
claim = self.store.record_progress(
task_id,
claim_id,
actor,
progress=progress,
stage=str(stage),
message=None if message is None else str(message),
lease_seconds=lease_seconds,
)
return {"claim_id": claim.claim_id, "status": claim.status, "progress": progress}
def complete(self, task_id: str, body: dict[str, Any]) -> dict[str, Any]:
claim_id = body.get("claim_id")
if not claim_id:
raise ValidationError("claim_id required")
actor = body.get("actor_identity") or body.get("worker_identity") or "worker"
task = self.store.get_task(task_id)
status = body.get("status", "COMPLETED")
outputs = body.get("outputs", [])
evidences = body.get("evidence", [])
if not isinstance(outputs, list):
raise ValidationError("outputs must be list")
if not isinstance(evidences, list):
raise ValidationError("evidence must be list")
if any(not isinstance(ev, dict) for ev in evidences):
raise ValidationError("evidence items must be objects")
claim = self.store.get_claim(claim_id)
self.policy.assert_readonly_worker_binding(actor, claim.worker_id)
self.policy.assert_allowed("result", actor, task=task)
if claim.worker_identity != actor:
raise ForbiddenError("claim identity mismatch")
if task.task_plan.data_classification == "credential-secret":
allowed_result_keys = {
"kind",
"hash",
"sha256",
"count",
"status",
"error_code",
"signature",
"attestation_ref",
}
for entry in [*outputs, *evidences]:
if (
not isinstance(entry, dict)
or set(entry) - allowed_result_keys
or contains_secret_text(entry)
):
raise ValidationError(
"credential-secret result must contain hash/count/status only"
)
result = ResultEnvelope(
task_id=task_id,
claim_id=claim_id,
worker_identity=actor,
status=status,
outputs=outputs,
evidence=evidences,
started_at=str(body.get("started_at") or iso8601_now()),
completed_at=str(body.get("completed_at") or iso8601_now()),
result_digest=body.get("result_digest"),
signature=body.get("signature"),
attestation_ref=body.get("attestation_ref"),
operation_digest=claim.operation_digest,
)
evidence_decision = self.policy.evidence_verifier.verify(task, evidences)
if not evidence_decision.allowed:
raise ForbiddenError(evidence_decision.reason)
result_decision = self.policy.verify_result(result, task)
if not result_decision.allowed:
raise ForbiddenError(result_decision.reason)
result.result_digest = result.computed_digest()
previous = self.store._last_evidence_hash(task_id)
evidence_entries = []
for evidence in evidences:
envelope = EvidenceEnvelope.create(
task_id=task_id,
claim_id=claim_id,
kind=str(evidence.get("kind") or evidence.get("type") or "generic"),
worker_identity=actor,
payload=evidence,
previous_evidence_hash=previous,
signature=evidence.get("signature"),
attestation_ref=evidence.get("attestation_ref"),
)
evidence_entries.append(envelope)
previous = envelope.evidence_digest
final_status = (
status
if status
in {"COMPLETED", "FAILED_FINAL", "FAILED_RECOVERABLE", "CANCELLED"}
else "COMPLETED"
)
lineage_metadata = task.task_plan.metadata.get("aios_task_lineage")
is_lineage_root = bool(
self.lineage is not None
and isinstance(lineage_metadata, dict)
and lineage_metadata.get("relation_type") == "ROOT"
)
if is_lineage_root and final_status == "COMPLETED":
raise ForbiddenError("lineage root completion requires root acceptance review")
review_outcome = None
with self.store._transaction():
self.store.complete_claim_with_evidence_and_event(
task_id,
claim_id,
final_status,
result.to_dict(),
evidence_entries,
)
is_lineage_child = bool(
self.lineage is not None
and isinstance(lineage_metadata, dict)
and lineage_metadata.get("relation_type") != "ROOT"
)
if is_lineage_child and final_status in {"COMPLETED", "FAILED_FINAL", "CANCELLED"}:
review_outcome = self.lineage.review_proven_terminal_child(
child_task_id=task_id,
claim_id=str(claim_id),
result_digest=str(result.result_digest),
evidence_refs=[entry.evidence_id for entry in evidence_entries],
)
response = result.to_dict()
if review_outcome is not None:
response["root_review"] = {
"review_id": review_outcome.review.review_id,
"root_task_id": review_outcome.review.root_task_id,
"root_complete": review_outcome.review.root_complete,
"next_legal_action": review_outcome.review.next_legal_action.value,
"dispatch_status": review_outcome.dispatch.status,
}
return response
def fail(self, task_id: str, body: dict[str, Any]) -> dict[str, Any]:
claim_id = body.get("claim_id")
if not claim_id:
raise ValidationError("claim_id required")
reason = body.get("reason", "failed")
actor = body.get("actor_identity") or body.get("worker_identity") or "worker"
self.policy.assert_allowed("fail", actor)
task = self.store.get_task(task_id)
self.policy.assert_allowed("fail", actor, task=task)
claim = self.store.get_claim(claim_id)
if claim.worker_identity != actor:
raise ForbiddenError("claim identity mismatch")
status = "FAILED_RECOVERABLE" if body.get("recoverable", False) else "FAILED_FINAL"
self.store.fail_claim_with_event(task_id, claim_id, status, str(reason))
return {"task_id": task_id, "status": status, "reason": reason}
def cancel(self, task_id: str, body: dict[str, Any]) -> dict[str, Any]:
actor = body.get("actor_identity") or body.get("worker_identity") or "owner"
self.policy.assert_allowed("cancel", actor)
reason = body.get("reason", "cancelled")
task = self.store.get_task(task_id)
self.policy.assert_allowed("cancel", actor, task=task)
updated = self.store.cancel_task_with_event(
task_id, task.revision, reason=reason
)
return updated.to_dict()
def delegate(
self,
task_id: str,
body: dict[str, Any],
idempotency_key: str | None = None,
) -> dict[str, Any]:
actor = body.get("actor_identity") or "owner"
parent = self.store.get_task(task_id)
mission_managed = bool(
self.lineage is not None
and self.missions is not None
and self.missions.manages_root(parent.root_task_id)
)
if mission_managed:
plan_body = body.get("task") if "task" in body else {
key: value
for key, value in body.items()
if key != "actor_identity"
}
return self.delegate_mission(
task_id,
plan_body,
idempotency_key,
actor_identity=str(actor),
)
self.policy.assert_allowed("delegate", actor)
self.policy.assert_allowed("delegate", actor, task=parent)
if "task" in body:
plan_body = body["task"]
try:
child_plan = TaskPlan.from_dict(plan_body)
except (TypeError, ValueError) as exc:
raise ValidationError("invalid child task plan") from exc
else:
plan_body = dict(body)
plan_body.pop("actor_identity", None)
try:
child_plan = TaskPlan.from_dict(plan_body)
except (TypeError, ValueError) as exc:
raise ValidationError("invalid child task plan") from exc
child_plan.parent_task_id = task_id
if self.lineage is not None:
if not isinstance(plan_body, dict):
raise ValidationError("invalid child task plan")
if "task_id" not in plan_body:
raise ValidationError("lineage delegation requires a stable task_id")
plan_body = dict(plan_body)
issuer = plan_body.get("issuer")
if issuer and (
not isinstance(issuer, dict) or issuer.get("id") != actor
):
raise ForbiddenError("child issuer identity mismatch")
plan_body["issuer"] = {"type": "authenticated", "id": actor}
child_plan.issuer = dict(plan_body["issuer"])
child = self.lineage.delegate_child(
parent_task_id=task_id,
plan=child_plan,
authenticated_identity=str(actor),
request_digest=self.lineage._request_digest(plan_body),
delegation=self.delegation,
)
else:
child = self.delegation.delegate(task_id, child_plan, caller=actor)
return child.to_dict()
def get_events(self, task_id: str, actor: str | None = None) -> list[dict[str, Any]]:
task = self.store.get_task(task_id)
self._assert_mission_read(task, actor)
if actor is not None:
self.policy.assert_allowed("audit", actor, task=task)
if self.missions is not None and self.missions.manages_root(
task.root_task_id
):
self.missions.assert_task_read(
task, authenticated_identity=actor
)
return self.store.list_events(task_id)
def get_evidence(self, task_id: str, actor: str | None = None) -> list[dict[str, Any]]:
task = self.store.get_task(task_id)
self._assert_mission_read(task, actor)
if actor is not None:
self.policy.assert_allowed("audit", actor, task=task)
if self.missions is not None and self.missions.manages_root(
task.root_task_id
):
self.missions.assert_task_read(
task, authenticated_identity=actor
)
return self.evidence.list(task_id)
def get_children(self, task_id: str, actor: str | None = None) -> list[str]:
task = self.store.get_task(task_id)
self._assert_mission_read(task, actor)
if actor is not None:
self.policy.assert_allowed("read", actor, task=task)
if self.missions is not None and self.missions.manages_root(
task.root_task_id
):
self.missions.assert_task_read(
task, authenticated_identity=actor
)
return self.store.list_children(task_id)
class TaskPlaneRequestHandler(BaseHTTPRequestHandler):
service: TaskPlaneService | None = None
authenticator: Callable[[str], str | None] | None = None
max_body_bytes = 1_000_000
def log_message(self, format: str, *args: Any) -> None:
# BaseHTTPRequestHandler logs the raw request target; suppress it so
# attacker-controlled paths or query strings cannot leak credentials.
return
def _json(self) -> tuple[str | None, dict[str, Any]]:
try:
length = int(self.headers.get("Content-Length", "0"))
except ValueError as exc:
raise ValidationError("invalid content length") from exc
if length < 0:
raise ValidationError("invalid content length")
if length > self.max_body_bytes:
raise PayloadTooLargeError("payload exceeds limit")
raw = self.rfile.read(length) if length > 0 else b""
if not raw:
return None, {}
try:
decoded = raw.decode("utf-8")
payload = json.loads(decoded)
if not isinstance(payload, dict):
raise ValidationError("JSON payload must be an object")
return decoded, payload
except (UnicodeDecodeError, json.JSONDecodeError) as exc:
raise ValidationError("invalid JSON payload") from exc
def _response(self, status: int, payload: Any) -> None:
encoded = json.dumps(payload, ensure_ascii=False).encode("utf-8")
self.send_response(status)
self.send_header("Content-Type", "application/json; charset=utf-8")
self.send_header("Content-Length", str(len(encoded)))
self.end_headers()
self.wfile.write(encoded)
def _authenticated_identity(self) -> str:
authenticator = type(self).authenticator
if authenticator is None:
raise UnauthorizedError("authentication unavailable")
header = self.headers.get("Authorization", "")
if not header.startswith("Bearer "):
raise UnauthorizedError("bearer authentication required")
token = header[7:]
if not token or any(ord(ch) < 33 for ch in token):
raise UnauthorizedError("invalid bearer token")
identity = authenticator(token)
if not identity:
raise UnauthorizedError("invalid credentials")
return str(identity)
def _handle(self, handler):
try:
if self.service is None:
raise TaskPlaneHTTPError("service not configured")
result = handler()
if isinstance(result, tuple):
status, payload = result
else:
status, payload = 200, result
self._response(status, payload)
except TaskPlaneHTTPError as exc:
self._response(exc.status_code, exc.to_payload())
except Exception as exc: # defensive
if isinstance(exc, TaskPlaneHTTPError):
raise
self._response(
500,
{"error": "internal_error", "message": "internal server error"},
)
def do_GET(self): # noqa: N802
def route():
path = urllib.parse.urlparse(self.path).path
parts = [p for p in path.split("/") if p]
for part in parts[1:]:
if part not in {"events", "evidence", "children", "heartbeat"}:
try:
validate_identifier(part, "resource identifier")
except ValueError as exc:
raise ValidationError("invalid resource identifier") from exc
identity = self._authenticated_identity()
if len(parts) == 1 and parts[0] == "tasks":
return 200, self.service.list_tasks(identity)
if len(parts) == 2 and parts[0] == "missions":
return 200, self.service.get_mission(
parts[1], actor_identity=identity
)
if len(parts) == 2 and parts[0] == "tasks":
task_id = parts[1]
return 200, self.service.get_task(task_id, identity)
if len(parts) == 3 and parts[0] == "tasks" and parts[2] == "events":
return 200, self.service.get_events(parts[1], identity)
if len(parts) == 3 and parts[0] == "tasks" and parts[2] == "evidence":
return 200, self.service.get_evidence(parts[1], identity)
if len(parts) == 3 and parts[0] == "tasks" and parts[2] == "children":
return 200, self.service.get_children(parts[1], identity)
if len(parts) == 1 and parts[0] == "workers":
return 200, self.service.list_workers(identity)
if len(parts) == 2 and parts[0] == "workers":
return 200, self.service.get_worker(parts[1], identity)
raise NotFoundError("unknown endpoint")
self._handle(route)
def do_POST(self): # noqa: N802
def route():
body_text, body = self._json()
identity = self._authenticated_identity()
path = urllib.parse.urlparse(self.path).path
parts = [p for p in path.split("/") if p]
headers = {k.lower(): v for k, v in self.headers.items()}
if len(parts) == 1 and parts[0] == "missions":
return 201, self.service.create_mission(
body or {},
headers.get("idempotency-key"),
actor_identity=identity,
)
if len(parts) == 1 and parts[0] == "tasks":
issuer = body.get("issuer")
if issuer and (
not isinstance(issuer, dict) or issuer.get("id") != identity
):
raise ForbiddenError("issuer identity mismatch")
body["issuer"] = {"type": "authenticated", "id": identity}
return 201, self.service.create_task(
body or {},
headers.get("idempotency-key"),
actor_identity=identity,
)
if body.get("actor_identity") not in {None, identity}:
raise ForbiddenError("actor identity mismatch")
body["actor_identity"] = identity
if len(parts) == 3 and parts[0] == "tasks" and parts[2] == "claim":
return 200, self.service.claim(parts[1], body or {})
if len(parts) == 3 and parts[0] == "tasks" and parts[2] == "heartbeat":
return 200, self.service.heartbeat(parts[1], body or {})
if len(parts) == 3 and parts[0] == "tasks" and parts[2] == "progress":
return 200, self.service.progress(parts[1], body or {})
if len(parts) == 3 and parts[0] == "tasks" and parts[2] == "result":
return 200, self.service.complete(parts[1], body or {})
if len(parts) == 3 and parts[0] == "tasks" and parts[2] == "fail":
return 200, self.service.fail(parts[1], body or {})
if len(parts) == 3 and parts[0] == "tasks" and parts[2] == "cancel":
return 200, self.service.cancel(parts[1], body or {})
if len(parts) == 3 and parts[0] == "tasks" and parts[2] == "delegate":
return 200, self.service.delegate(
parts[1], body or {}, headers.get("idempotency-key")
)
if len(parts) == 2 and parts[0] == "workers" and parts[1] == "register":
if (
body.get("identity") != identity
and identity not in self.service.policy.admin_identities
):
raise ForbiddenError("worker identity mismatch")
return 201, self.service.register_worker(body or {})
if len(parts) == 3 and parts[0] == "workers" and parts[2] == "heartbeat":
return 200, self.service.worker_heartbeat(parts[1], body or {})
if len(parts) == 3 and parts[0] == "workers" and parts[2] == "disable":
return 200, self.service.disable_worker(parts[1], body or {})
if len(parts) == 3 and parts[0] == "workers" and parts[2] == "restore":
return 200, self.service.restore_worker(parts[1], body or {})
raise NotFoundError("unknown endpoint")
self._handle(route)
def run_server(
host: str,
port: int,
service: TaskPlaneService,
*,
authenticator: Callable[[str], str | None] | None = None,
):
handler = TaskPlaneRequestHandler
handler.service = service
handler.authenticator = authenticator
server = ThreadingHTTPServer((host, port), handler)
server.serve_forever()