generated from Luis/nextjs-python-web-template
134 lines
3.5 KiB
Python
134 lines
3.5 KiB
Python
import asyncio
|
|
import json
|
|
import shlex
|
|
from typing import Annotated, AsyncIterator
|
|
import logging
|
|
|
|
from fastapi import APIRouter, Body, HTTPException, Request, status, logger
|
|
from fastapi.encoders import jsonable_encoder
|
|
from fastapi.responses import JSONResponse, StreamingResponse
|
|
|
|
from ...nix import nix_build, nix_eval
|
|
from ..schemas import VmConfig, VmInspectResponse
|
|
|
|
# Logging setup
|
|
log = logging.getLogger(__name__)
|
|
|
|
router = APIRouter()
|
|
|
|
class NixBuildException(HTTPException):
|
|
def __init__(self, msg: str, loc: list = ["body", "flake_attr"]):
|
|
detail = [
|
|
{
|
|
"loc": loc,
|
|
"msg": msg,
|
|
"type": "value_error",
|
|
}
|
|
]
|
|
super().__init__(
|
|
status_code=status.HTTP_422_UNPROCESSABLE_ENTITY, detail=detail
|
|
)
|
|
|
|
|
|
def nix_build_exception_handler(
|
|
request: Request, exc: NixBuildException
|
|
) -> JSONResponse:
|
|
return JSONResponse(
|
|
status_code=exc.status_code,
|
|
content=jsonable_encoder(dict(detail=exc.detail)),
|
|
)
|
|
|
|
|
|
def nix_inspect_vm(machine: str, flake_url: str) -> list[str]:
|
|
return nix_eval(
|
|
[
|
|
f"{flake_url}#nixosConfigurations.{json.dumps(machine)}.config.system.clan.vm.config"
|
|
]
|
|
)
|
|
|
|
|
|
def nix_build_vm(machine: str, flake_url: str) -> list[str]:
|
|
return nix_build(
|
|
[
|
|
f"{flake_url}#nixosConfigurations.{json.dumps(machine)}.config.system.build.vm"
|
|
]
|
|
)
|
|
|
|
|
|
async def start_vm(vm_path: str) -> None:
|
|
proc = await asyncio.create_subprocess_exec(
|
|
vm_path,
|
|
stdout=asyncio.subprocess.PIPE,
|
|
stderr=asyncio.subprocess.PIPE,
|
|
)
|
|
|
|
await proc.wait()
|
|
|
|
|
|
@router.post("/api/vms/inspect")
|
|
async def inspect_vm(
|
|
flake_url: Annotated[str, Body()], flake_attr: Annotated[str, Body()]
|
|
) -> VmInspectResponse:
|
|
cmd = nix_inspect_vm(flake_attr, flake_url=flake_url)
|
|
proc = await asyncio.create_subprocess_exec(
|
|
cmd[0],
|
|
*cmd[1:],
|
|
stdout=asyncio.subprocess.PIPE,
|
|
stderr=asyncio.subprocess.PIPE,
|
|
)
|
|
stdout, stderr = await proc.communicate()
|
|
|
|
if proc.returncode != 0:
|
|
raise NixBuildException(
|
|
f"""
|
|
Failed to evaluate vm from '{flake_url}#{flake_attr}'.
|
|
command: {shlex.join(cmd)}
|
|
exit code: {proc.returncode}
|
|
command output:
|
|
{stderr.decode("utf-8")}
|
|
"""
|
|
)
|
|
data = json.loads(stdout)
|
|
return VmInspectResponse(
|
|
config=VmConfig(flake_url=flake_url, flake_attr=flake_attr, **data)
|
|
)
|
|
|
|
|
|
async def vm_build(vm: VmConfig) -> AsyncIterator[str]:
|
|
cmd = nix_build_vm(vm.flake_attr, flake_url=vm.flake_url)
|
|
log.debug(f"Running command: {shlex.join(cmd)}")
|
|
proc = await asyncio.create_subprocess_exec(
|
|
cmd[0],
|
|
*cmd[1:],
|
|
stdout=asyncio.subprocess.PIPE,
|
|
stderr=asyncio.subprocess.PIPE,
|
|
)
|
|
assert proc.stdout is not None and proc.stderr is not None
|
|
vm_path = ""
|
|
async for line in proc.stdout:
|
|
vm_path = f'{line.decode("utf-8", "ignore").strip()}/bin/run-nixos-vm'
|
|
|
|
await start_vm(vm_path)
|
|
stderr = ""
|
|
async for line in proc.stderr:
|
|
stderr += line.decode("utf-8", "ignore")
|
|
yield line.decode("utf-8", "ignore")
|
|
res = await proc.wait()
|
|
if res != 0:
|
|
raise NixBuildException(
|
|
f"""
|
|
Failed to build vm from '{vm.flake_url}#{vm.flake_attr}'.
|
|
command: {shlex.join(cmd)}
|
|
exit code: {res}
|
|
command output:
|
|
{stderr}
|
|
"""
|
|
)
|
|
import logging
|
|
|
|
|
|
@router.post("/api/vms/create")
|
|
async def create_vm(vm: Annotated[VmConfig, Body()]) -> StreamingResponse:
|
|
return StreamingResponse(vm_build(vm))
|
|
|