Sergey Antropoff
777926487b
initial QEMU slice, backed by imported contracts for majors 6–9. - Implement durable handlers for access/auth, cluster, LXC, storage, HA, firewall, Ceph, SDN, ACME, notifications, pools, mapping, and node ops - Serve an interactive Web UI with catalog browsing, demo seed controls, and OpenAPI/help surfaces - Bundle PVE 6.4-15, 7.4-16, and 8.4.5 contract revisions alongside 9.2.3 - Support in-memory runtime contract Apply (POST /ui/api/contract/apply) so /version and /api2 routes follow the selected major until restart - Expand seed profiles (including demo-cluster), migrations 007–008, TLS gateway config, Compose/Makefile tooling, and compatibility evidence - Tighten .gitignore for macOS, hidden directories (.*/), and local secrets
246 lines
10 KiB
Python
246 lines
10 KiB
Python
"""Worker semantics for asynchronous LXC transitions."""
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from __future__ import annotations
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import json
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import uuid
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from collections.abc import Mapping
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from typing import Any, cast
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from app.simulation.clock import Clock
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from app.simulation.transitions import VmState, plan_transition
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from app.tasks.repository import Task, TaskRepository
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from app.tasks.worker import TaskHandler
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def lxc_handler(repository: TaskRepository, clock: Clock) -> TaskHandler:
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async def execute(task: Task) -> dict[str, Any]:
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operation = task.task_type.removeprefix("lxc-")
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if operation == "create":
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return await _create(repository, task, clock)
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if operation == "clone":
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return await _clone(repository, task)
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resource_id = uuid.UUID(str(task.payload["resource_id"]))
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if operation == "delete":
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return await _delete(repository, task, resource_id)
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if operation.startswith("snapshot-"):
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return await _snapshot(
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repository, task, resource_id, operation.removeprefix("snapshot-")
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)
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if operation == "migrate" or operation == "remote-migrate":
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return await _migrate(repository, task, resource_id, clock)
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async with repository.pool.acquire() as connection:
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row = await connection.fetchrow("SELECT state FROM resources WHERE id=$1", resource_id)
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if row is None:
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raise ValueError("resource disappeared")
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state = _object(row["state"])
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transition = plan_transition(VmState(str(state["status"])), operation)
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state["status"] = transition.intermediate
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await connection.execute(
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"UPDATE resources SET state=$2::jsonb WHERE id=$1",
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resource_id,
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json.dumps(state),
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)
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await repository.append_log(task.id, f"container {operation} started")
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await clock.sleep(1.0)
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async with repository.pool.acquire() as connection:
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state["status"] = transition.after
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await connection.execute(
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"UPDATE resources SET state=$2::jsonb WHERE id=$1",
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resource_id,
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json.dumps(state),
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)
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await repository.append_log(task.id, f"container {operation} completed")
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return {"status": str(transition.after)}
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return execute
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async def _create(repository: TaskRepository, task: Task, clock: Clock) -> dict[str, Any]:
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node, vmid = str(task.payload["node"]), int(task.payload["vmid"])
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config = dict(task.payload.get("config", {}))
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start = bool(task.payload.get("start", False))
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resource_id = uuid.uuid4()
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status = "running" if start else "stopped"
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state = {"status": status, **config}
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async with repository.pool.acquire() as connection:
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async with connection.transaction():
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node_row = await connection.fetchrow(
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"SELECT id, cluster_id FROM nodes WHERE name=$1", node
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)
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if node_row is None:
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raise ValueError("node disappeared")
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await connection.execute(
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"""INSERT INTO resources(
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id, node_id, cluster_id, kind, external_id, state, metadata
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) VALUES($1, $2, $3, 'lxc', $4, $5::jsonb, '{}'::jsonb)""",
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resource_id,
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node_row["id"],
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node_row["cluster_id"],
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str(vmid),
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json.dumps(state, sort_keys=True),
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)
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await connection.execute(
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"""INSERT INTO containers(resource_id, cluster_id, vmid, config)
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VALUES($1, $2, $3, $4::jsonb)""",
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resource_id,
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node_row["cluster_id"],
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vmid,
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json.dumps(config, sort_keys=True),
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)
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if start:
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await clock.sleep(0.5)
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await repository.append_log(task.id, f"container {vmid} created")
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return {"vmid": vmid, "status": status}
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async def _delete(repository: TaskRepository, task: Task, resource_id: uuid.UUID) -> dict[str, Any]:
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async with repository.pool.acquire() as connection:
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status = await connection.execute("DELETE FROM resources WHERE id=$1", resource_id)
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if status != "DELETE 1":
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raise ValueError("resource disappeared")
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await repository.append_log(task.id, "container deleted")
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return {"deleted": True}
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async def _snapshot(
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repository: TaskRepository,
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task: Task,
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resource_id: uuid.UUID,
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operation: str,
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) -> dict[str, Any]:
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name = str(task.payload["snapname"])
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async with repository.pool.acquire() as connection:
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async with connection.transaction():
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if operation == "create":
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row = await connection.fetchrow(
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"""SELECT r.state, c.config FROM resources r
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JOIN containers c ON c.resource_id=r.id WHERE r.id=$1""",
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resource_id,
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)
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if row is None:
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raise ValueError("resource disappeared")
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captured = {
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"resource_state": _object(row["state"]),
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"config": _object(row["config"]),
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}
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await connection.execute(
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"""INSERT INTO snapshots(id, resource_id, name, description, state)
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VALUES($1, $2, $3, $4, $5::jsonb)""",
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uuid.uuid4(),
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resource_id,
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name,
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str(task.payload.get("description", "")),
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json.dumps(captured, sort_keys=True),
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)
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elif operation == "delete":
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status = await connection.execute(
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"DELETE FROM snapshots WHERE resource_id=$1 AND name=$2",
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resource_id,
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name,
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)
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if status != "DELETE 1":
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raise ValueError("snapshot disappeared")
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elif operation == "rollback":
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row = await connection.fetchrow(
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"SELECT state FROM snapshots WHERE resource_id=$1 AND name=$2",
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resource_id,
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name,
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)
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if row is None:
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raise ValueError("snapshot disappeared")
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captured = _object(row["state"])
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state = dict(cast(Mapping[str, Any], captured["resource_state"]))
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await connection.execute(
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"""UPDATE resources SET state=$2::jsonb, version=version+1,
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updated_at=now() WHERE id=$1""",
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resource_id,
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json.dumps(state, sort_keys=True),
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)
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await connection.execute(
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"UPDATE containers SET config=$2::jsonb WHERE resource_id=$1",
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resource_id,
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json.dumps(captured["config"], sort_keys=True),
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)
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else:
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raise ValueError(f"unsupported snapshot operation: {operation}")
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await repository.append_log(task.id, f"snapshot {name} {operation} completed")
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return {"snapshot": name, "operation": operation}
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async def _clone(repository: TaskRepository, task: Task) -> dict[str, Any]:
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source_id = uuid.UUID(str(task.payload["source_resource_id"]))
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target_id = uuid.uuid4()
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node, vmid = str(task.payload["node"]), int(task.payload["vmid"])
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async with repository.pool.acquire() as connection:
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async with connection.transaction():
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source = await connection.fetchrow(
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"""SELECT r.state, c.config FROM resources r
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JOIN containers c ON c.resource_id=r.id WHERE r.id=$1""",
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source_id,
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)
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target = await connection.fetchrow(
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"SELECT id, cluster_id FROM nodes WHERE name=$1", node
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)
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if source is None or target is None:
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raise ValueError("clone source or target disappeared")
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config = _object(source["config"])
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if task.payload.get("name") is not None:
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config["hostname"] = task.payload["name"]
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state = {**_object(source["state"]), **config, "status": "stopped"}
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await connection.execute(
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"""INSERT INTO resources(id,node_id,cluster_id,kind,external_id,state,metadata)
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VALUES($1,$2,$3,'lxc',$4,$5::jsonb,'{}'::jsonb)""",
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target_id,
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target["id"],
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target["cluster_id"],
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str(vmid),
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json.dumps(state),
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)
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await connection.execute(
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"""INSERT INTO containers(resource_id,cluster_id,vmid,config)
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VALUES($1,$2,$3,$4::jsonb)""",
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target_id,
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target["cluster_id"],
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vmid,
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json.dumps(config),
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)
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await repository.append_log(task.id, f"container cloned to {vmid}")
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return {"vmid": vmid, "node": node}
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async def _migrate(
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repository: TaskRepository, task: Task, resource_id: uuid.UUID, clock: Clock
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) -> dict[str, Any]:
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target = str(task.payload["target"])
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async with repository.pool.acquire() as connection:
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row = await connection.fetchrow("SELECT state FROM resources WHERE id=$1", resource_id)
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if row is None:
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raise ValueError("resource disappeared")
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state = _object(row["state"])
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transition = plan_transition(VmState(str(state["status"])), "migrate")
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state["status"] = transition.intermediate
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await connection.execute(
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"UPDATE resources SET state=$2::jsonb WHERE id=$1", resource_id, json.dumps(state)
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)
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await repository.append_log(task.id, f"migration to {target} started")
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await clock.sleep(1.0)
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async with repository.pool.acquire() as connection:
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node = await connection.fetchrow("SELECT id FROM nodes WHERE name=$1", target)
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if node is None:
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raise ValueError("target node disappeared")
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state["status"] = transition.after
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await connection.execute(
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"""UPDATE resources SET node_id=$2,state=$3::jsonb,version=version+1,
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updated_at=now() WHERE id=$1""",
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resource_id,
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node["id"],
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json.dumps(state),
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)
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await repository.append_log(task.id, f"migration to {target} completed")
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return {"node": target, "status": str(transition.after)}
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def _object(value: object) -> dict[str, Any]:
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return json.loads(value) if isinstance(value, str) else dict(cast(Mapping[str, Any], value))
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