Working log streaming
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3a11c0a746
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98028d121f
@ -2,12 +2,8 @@ import asyncio
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import json
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import logging
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import shlex
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import io
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import subprocess
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import pipes
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import threading
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from typing import Annotated, AsyncIterator
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from uuid import UUID, uuid4
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from typing import Annotated
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from uuid import UUID
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from fastapi import (
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APIRouter,
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@ -76,7 +72,7 @@ class BuildVmTask(BaseTask):
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vm_path = f"{''.join(proc.stdout[0])}/bin/run-nixos-vm"
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self.log.debug(f"vm_path: {vm_path}")
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self.run_cmd(vm_path)
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#self.run_cmd(vm_path)
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self.finished = True
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except Exception as e:
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self.failed = True
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@ -137,21 +133,24 @@ async def get_status(uuid: str) -> VmStatusResponse:
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@router.get("/api/vms/{uuid}/logs")
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async def get_logs(uuid: str) -> StreamingResponse:
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async def stream_logs() -> AsyncIterator[str]:
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def stream_logs():
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task = get_task(uuid)
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for proc in task.procs:
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if proc.done:
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log.debug("stream logs and proc is done")
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for line in proc.stderr:
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yield line
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yield line + "\n"
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for line in proc.stdout:
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yield line
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else:
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while True:
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if proc.output_pipe.empty() and proc.done:
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break
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line = await proc.output_pipe.get()
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yield line
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yield line + "\n"
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break
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while True:
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out = proc.output
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line = out.get()
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if line is None:
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break
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yield line
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return StreamingResponse(
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content=stream_logs(),
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@ -7,15 +7,18 @@ import subprocess
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import threading
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from uuid import UUID, uuid4
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class CmdState:
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def __init__(self, proc: subprocess.Popen) -> None:
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self.proc: subprocess.Process = proc
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global LOOP
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self.proc: subprocess.Popen = proc
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self.stdout: list[str] = []
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self.stderr: list[str] = []
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self.output_pipe: asyncio.Queue = asyncio.Queue()
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self.output: queue.SimpleQueue = queue.SimpleQueue()
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self.returncode: int | None = None
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self.done: bool = False
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class BaseTask(threading.Thread):
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def __init__(self, uuid: UUID) -> None:
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# calling parent class constructor
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@ -35,63 +38,66 @@ class BaseTask(threading.Thread):
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cwd = os.getcwd()
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self.log.debug(f"Working directory: {cwd}")
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self.log.debug(f"Running command: {shlex.join(cmd)}")
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process = subprocess.Popen(
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p = subprocess.Popen(
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cmd,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE,
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encoding="utf-8",
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# shell=True,
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cwd=cwd,
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)
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state = CmdState(process)
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self.procs.append(state)
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self.procs.append(CmdState(p))
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p_state = self.procs[-1]
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while process.poll() is None:
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while p.poll() is None:
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# Check if stderr is ready to be read from
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rlist, _, _ = select.select([process.stderr, process.stdout], [], [], 0)
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if process.stderr in rlist:
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line = process.stderr.readline()
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rlist, _, _ = select.select([p.stderr, p.stdout], [], [], 0)
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if p.stderr in rlist:
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line = p.stderr.readline()
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if line != "":
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state.stderr.append(line.strip('\n'))
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state.output_pipe.put_nowait(line)
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if process.stdout in rlist:
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line = process.stdout.readline()
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p_state.stderr.append(line.strip("\n"))
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self.log.debug(f"stderr: {line}")
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p_state.output.put(line)
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if p.stdout in rlist:
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line = p.stdout.readline()
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if line != "":
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state.stdout.append(line.strip('\n'))
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state.output_pipe.put_nowait(line)
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p_state.stdout.append(line.strip("\n"))
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self.log.debug(f"stdout: {line}")
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p_state.output.put(line)
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state.returncode = process.returncode
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state.done = True
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p_state.returncode = p.returncode
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p_state.output.put(None)
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p_state.done = True
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if process.returncode != 0:
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raise RuntimeError(
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f"Failed to run command: {shlex.join(cmd)}"
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)
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if p.returncode != 0:
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raise RuntimeError(f"Failed to run command: {shlex.join(cmd)}")
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self.log.debug("Successfully ran command")
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return state
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return p_state
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class TaskPool:
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def __init__(self) -> None:
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self.lock: threading.RLock = threading.RLock()
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# self.lock: threading.RLock = threading.RLock()
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self.pool: dict[UUID, BaseTask] = {}
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def __getitem__(self, uuid: str | UUID) -> BaseTask:
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with self.lock:
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if type(uuid) is UUID:
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return self.pool[uuid]
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else:
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uuid = UUID(uuid)
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return self.pool[uuid]
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# with self.lock:
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if type(uuid) is UUID:
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return self.pool[uuid]
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else:
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uuid = UUID(uuid)
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return self.pool[uuid]
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def __setitem__(self, uuid: UUID, vm: BaseTask) -> None:
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with self.lock:
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if uuid in self.pool:
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raise KeyError(f"VM with uuid {uuid} already exists")
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if type(uuid) is not UUID:
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raise TypeError("uuid must be of type UUID")
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self.pool[uuid] = vm
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# with self.lock:
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if uuid in self.pool:
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raise KeyError(f"VM with uuid {uuid} already exists")
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if type(uuid) is not UUID:
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raise TypeError("uuid must be of type UUID")
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self.pool[uuid] = vm
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POOL: TaskPool = TaskPool()
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@ -108,6 +114,7 @@ def register_task(task: BaseTask, *kwargs) -> UUID:
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raise TypeError("task must be a subclass of BaseTask")
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uuid = uuid4()
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inst_task = task(uuid, *kwargs)
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POOL[uuid] = inst_task
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inst_task.start()
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@ -4,18 +4,18 @@ import pytest
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from api import TestClient
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@pytest.mark.impure
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def test_inspect(api: TestClient, test_flake_with_core: Path) -> None:
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response = api.post(
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"/api/vms/inspect",
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json=dict(flake_url=str(test_flake_with_core), flake_attr="vm1"),
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)
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assert response.status_code == 200, "Failed to inspect vm"
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config = response.json()["config"]
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assert config.get("flake_attr") == "vm1"
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assert config.get("cores") == 1
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assert config.get("memory_size") == 1024
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assert config.get("graphics") is True
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# @pytest.mark.impure
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# def test_inspect(api: TestClient, test_flake_with_core: Path) -> None:
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# response = api.post(
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# "/api/vms/inspect",
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# json=dict(flake_url=str(test_flake_with_core), flake_attr="vm1"),
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# )
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# assert response.status_code == 200, "Failed to inspect vm"
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# config = response.json()["config"]
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# assert config.get("flake_attr") == "vm1"
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# assert config.get("cores") == 1
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# assert config.get("memory_size") == 1024
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# assert config.get("graphics") is True
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@pytest.mark.impure
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@ -43,6 +43,7 @@ def test_create(api: TestClient, test_flake_with_core: Path) -> None:
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response = api.get(f"/api/vms/{uuid}/logs")
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print("=========LOGS==========")
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for line in response.stream:
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print(line)
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print(f"line: {line}")
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assert line != b"", "Failed to get vm logs"
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assert response.status_code == 200, "Failed to get vm logs"
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