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feat(l4d2-web): add job pages and cancellation

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mwiegand 2026-05-06 15:05:13 +02:00
parent 91d042cf33
commit a347829608
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19 changed files with 635 additions and 83 deletions
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64
docs/superpowers/plans/2026-05-06-l4d2-job-pages-and-cancel.md Normal file
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@ -0,0 +1,64 @@
# L4D2 Job Pages and Cancellation Follow-Up
## Goal
Make queued and running lifecycle jobs easier to inspect and stop from the web UI.
## Scope
- Add job list navigation for server pages and admin pages.
- Add a job detail page with persisted command logs streamed through the existing SSE endpoint.
- Add cancellation for queued jobs first.
- Add best-effort cancellation for running jobs by terminating the subprocess owned by `l4d2host.process.run_command()`.
## Slice 1: Job Browsing and Queued Cancel
### Behavior
- `/servers/<server_id>` shows recent jobs for that server and links to the full job history.
- `/servers/<server_id>/jobs` shows all jobs for that server, newest first.
- `/jobs/<job_id>` shows job metadata and live/replayed logs.
- `/admin/jobs` reuses the same job table markup and links every job to its detail page.
- `POST /jobs/<job_id>/cancel` cancels queued jobs only.
- Owners can view/cancel their own jobs.
- Admins can view/cancel any job.
### Implementation Notes
- Use one reusable Jinja partial for job tables.
- Show cancel buttons only for `queued` jobs in this slice.
- Cancelling a queued job sets `state="cancelled"`, `finished_at`, `updated_at`, and `exit_code=1`.
- Append a `stderr` job-log line explaining that the job was cancelled before execution.
- Do not revert `Server.desired_state`; cancellation prevents execution but is not rollback.
### Verification
- `pytest l4d2web/tests/test_pages.py -q`
- `pytest l4d2web/tests/test_job_logs.py -q`
- `pytest l4d2web/tests -q`
## Slice 2: Running Job Cancellation
### Behavior
- Running jobs expose the same cancel action.
- Cancelling a running job marks it `cancelling` while the subprocess is being terminated.
- Once the subprocess exits because of cancellation, the job finishes as `cancelled`.
- Cancellation is best-effort and is not rollback; partial runtime state may remain.
- Server actual state is refreshed after a cancelled server job when possible.
### Implementation Notes
- Add cancellation primitives in `l4d2host.process`.
- Launch subprocesses in their own process group/session when a cancel token is supplied.
- On cancellation, send terminate, wait briefly, then force kill.
- Thread the cancel token through `l4d2host` lifecycle APIs, `l4d2web.services.l4d2_facade`, and `l4d2web.services.job_worker`.
- Keep v1 single-process assumptions; cancellation requests are DB-backed, while process handles stay process-local.
### Verification
- `pytest l4d2host/tests/test_process.py -q`
- `pytest l4d2host/tests -q`
- `pytest l4d2web/tests/test_job_worker.py -q`
- `pytest l4d2web/tests/test_job_logs.py -q`
- `pytest l4d2web/tests -q`

4
l4d2host/fs/fuse_overlayfs.py
View file

@ -16,6 +16,7 @@ class FuseOverlayFSMounter(OverlayMounter):
on_stdout: Callable[[str], None] | None = None,
on_stderr: Callable[[str], None] | None = None,
passthrough: bool = False,
should_cancel: Callable[[], bool] | None = None,
) -> None:
run_command(
[
@ -27,6 +28,7 @@ class FuseOverlayFSMounter(OverlayMounter):
on_stdout=on_stdout,
on_stderr=on_stderr,
passthrough=passthrough,
should_cancel=should_cancel,
)
def unmount(
@ -36,10 +38,12 @@ class FuseOverlayFSMounter(OverlayMounter):
on_stdout: Callable[[str], None] | None = None,
on_stderr: Callable[[str], None] | None = None,
passthrough: bool = False,
should_cancel: Callable[[], bool] | None = None,
) -> None:
run_command(
["fusermount3", "-u", str(merged)],
on_stdout=on_stdout,
on_stderr=on_stderr,
passthrough=passthrough,
should_cancel=should_cancel,
)

12
l4d2host/instances.py
View file

@ -18,6 +18,7 @@ def initialize_instance(
on_stdout: Callable[[str], None] | None = None,
on_stderr: Callable[[str], None] | None = None,
passthrough: bool = False,
should_cancel: Callable[[], bool] | None = None,
) -> None:
spec = load_spec(spec_path)
@ -45,7 +46,7 @@ def initialize_instance(
if root.resolve() == DEFAULT_ROOT:
ensure_template_unit()
daemon_reload(on_stdout=on_stdout, on_stderr=on_stderr, passthrough=passthrough)
daemon_reload(on_stdout=on_stdout, on_stderr=on_stderr, passthrough=passthrough, should_cancel=should_cancel)
def _load_instance_env(path: Path) -> dict[str, str]:
@ -65,6 +66,7 @@ def start_instance(
on_stdout: Callable[[str], None] | None = None,
on_stderr: Callable[[str], None] | None = None,
passthrough: bool = False,
should_cancel: Callable[[], bool] | None = None,
) -> None:
instance_dir = root / "instances" / name
runtime_dir = root / "runtime" / name
@ -85,6 +87,7 @@ def start_instance(
on_stdout=on_stdout,
on_stderr=on_stderr,
passthrough=passthrough,
should_cancel=should_cancel,
)
target_cfg = runtime_dir / "merged" / "left4dead2" / "cfg" / "server.cfg"
@ -96,6 +99,7 @@ def start_instance(
on_stdout=on_stdout,
on_stderr=on_stderr,
passthrough=passthrough,
should_cancel=should_cancel,
)
@ -106,18 +110,21 @@ def stop_instance(
on_stdout: Callable[[str], None] | None = None,
on_stderr: Callable[[str], None] | None = None,
passthrough: bool = False,
should_cancel: Callable[[], bool] | None = None,
) -> None:
run_command(
["systemctl", "--user", "stop", f"l4d2@{name}.service"],
on_stdout=on_stdout,
on_stderr=on_stderr,
passthrough=passthrough,
should_cancel=should_cancel,
)
run_command(
["fusermount3", "-u", str(root / "runtime" / name / "merged")],
on_stdout=on_stdout,
on_stderr=on_stderr,
passthrough=passthrough,
should_cancel=should_cancel,
)
@ -128,6 +135,7 @@ def delete_instance(
on_stdout: Callable[[str], None] | None = None,
on_stderr: Callable[[str], None] | None = None,
passthrough: bool = False,
should_cancel: Callable[[], bool] | None = None,
) -> None:
instance_dir = root / "instances" / name
runtime_dir = root / "runtime" / name
@ -140,6 +148,7 @@ def delete_instance(
on_stdout=on_stdout,
on_stderr=on_stderr,
passthrough=passthrough,
should_cancel=should_cancel,
)
merged = runtime_dir / "merged"
@ -149,6 +158,7 @@ def delete_instance(
on_stdout=on_stdout,
on_stderr=on_stderr,
passthrough=passthrough,
should_cancel=should_cancel,
)
if instance_dir.exists():

61
l4d2host/process.py
View file

@ -1,7 +1,10 @@
from dataclasses import dataclass
import os
import signal
import subprocess
import sys
import threading
import time
from typing import Callable, Sequence
@ -12,12 +15,19 @@ class CommandResult:
stderr: str
class CommandCancelledError(subprocess.CalledProcessError):
pass
def run_command(
cmd: Sequence[str],
*,
on_stdout: Callable[[str], None] | None = None,
on_stderr: Callable[[str], None] | None = None,
passthrough: bool = False,
should_cancel: Callable[[], bool] | None = None,
cancel_poll_seconds: float = 0.2,
cancel_terminate_timeout: float = 2.0,
) -> CommandResult:
stdout_lines: list[str] = []
stderr_lines: list[str] = []
@ -28,8 +38,36 @@ def run_command(
stderr=subprocess.PIPE,
text=True,
bufsize=1,
start_new_session=should_cancel is not None,
)
def emit_stderr_message(line: str) -> None:
stderr_lines.append(line)
if on_stderr is not None:
on_stderr(line)
if passthrough:
print(line, file=sys.stderr)
def terminate_process() -> None:
emit_stderr_message("cancellation requested; terminating subprocess")
if should_cancel is not None:
try:
os.killpg(proc.pid, signal.SIGTERM)
except ProcessLookupError:
pass
else:
proc.terminate()
def kill_process() -> None:
emit_stderr_message("subprocess did not exit after cancellation; killing subprocess")
if should_cancel is not None:
try:
os.killpg(proc.pid, signal.SIGKILL)
except ProcessLookupError:
pass
else:
proc.kill()
def pump(
stream,
sink: list[str],
@ -60,7 +98,21 @@ def run_command(
stdout_thread.start()
stderr_thread.start()
returncode = proc.wait()
cancelled = False
while True:
returncode = proc.poll()
if returncode is not None:
break
if should_cancel is not None and should_cancel():
cancelled = True
terminate_process()
try:
returncode = proc.wait(timeout=cancel_terminate_timeout)
except subprocess.TimeoutExpired:
kill_process()
returncode = proc.wait()
break
time.sleep(cancel_poll_seconds)
stdout_thread.join()
stderr_thread.join()
@ -69,6 +121,13 @@ def run_command(
stdout="\n".join(stdout_lines),
stderr="\n".join(stderr_lines),
)
if cancelled:
raise CommandCancelledError(
returncode=returncode,
cmd=list(cmd),
output=result.stdout,
stderr=result.stderr,
)
if returncode != 0:
raise subprocess.CalledProcessError(
returncode=returncode,

2
l4d2host/steam_install.py
View file

@ -15,6 +15,7 @@ class SteamInstaller:
on_stdout: Callable[[str], None] | None = None,
on_stderr: Callable[[str], None] | None = None,
passthrough: bool = False,
should_cancel: Callable[[], bool] | None = None,
) -> None:
for platform in ("windows", "linux"):
run_command(
@ -34,4 +35,5 @@ class SteamInstaller:
on_stdout=on_stdout,
on_stderr=on_stderr,
passthrough=passthrough,
should_cancel=should_cancel,
)

2
l4d2host/systemd_user.py
View file

@ -20,10 +20,12 @@ def daemon_reload(
on_stdout: Callable[[str], None] | None = None,
on_stderr: Callable[[str], None] | None = None,
passthrough: bool = False,
should_cancel: Callable[[], bool] | None = None,
) -> None:
run_command(
["systemctl", "--user", "daemon-reload"],
on_stdout=on_stdout,
on_stderr=on_stderr,
passthrough=passthrough,
should_cancel=should_cancel,
)

23
l4d2host/tests/test_process.py
View file

@ -3,7 +3,7 @@ import subprocess
import pytest
from l4d2host.process import run_command
from l4d2host.process import CommandCancelledError, run_command
def test_callbacks_receive_lines() -> None:
@ -23,6 +23,27 @@ def test_nonzero_exit_raises() -> None:
run_command(["python3", "-c", "import sys; sys.exit(7)"])
def test_cancelled_command_raises_cancelled_error() -> None:
should_cancel = False
lines: list[str] = []
def on_stdout(line: str) -> None:
nonlocal should_cancel
lines.append(line)
should_cancel = True
with pytest.raises(CommandCancelledError):
run_command(
["python3", "-c", "import time; print('ready', flush=True); time.sleep(30)"],
on_stdout=on_stdout,
should_cancel=lambda: should_cancel,
cancel_poll_seconds=0.01,
cancel_terminate_timeout=0.2,
)
assert lines == ["ready"]
def test_run_command_avoids_runtime_unsafe_nested_annotations() -> None:
source = inspect.getsource(run_command)
assert "subprocess.Popen[str].stdout" not in source

73
l4d2web/routes/job_routes.py
View file

@ -1,11 +1,13 @@
from datetime import UTC, datetime
import time
from flask import Blueprint, Response, current_app, request
from flask import Blueprint, Response, current_app, redirect, render_template, request
from sqlalchemy import select
from l4d2web.auth import current_user, require_login
from l4d2web.auth import current_user, is_safe_next, require_login
from l4d2web.db import session_scope
from l4d2web.models import Job, JobLog
from l4d2web.models import Job, JobLog, Server, User
from l4d2web.services.job_worker import append_job_log
bp = Blueprint("job", __name__)
@ -19,6 +21,67 @@ def format_sse_event(seq: int, event: str, data: str) -> str:
return "\n".join(lines) + "\n\n"
def can_access_job(job: Job, user: User) -> bool:
return user.admin or job.user_id == user.id
@bp.get("/jobs/<int:job_id>")
@require_login
def job_detail(job_id: int) -> str | Response:
user = current_user()
assert user is not None
with session_scope() as db:
row = db.execute(
select(Job, User, Server)
.join(User, User.id == Job.user_id)
.outerjoin(Server, Server.id == Job.server_id)
.where(Job.id == job_id)
).first()
if row is None:
return Response(status=404)
job, owner, server = row
if not can_access_job(job, user):
return Response(status=403)
return render_template("job_detail.html", job=job, owner=owner, server=server)
@bp.post("/jobs/<int:job_id>/cancel")
@require_login
def cancel_job(job_id: int) -> Response:
user = current_user()
assert user is not None
next_url = request.form.get("next")
if not is_safe_next(next_url):
next_url = f"/jobs/{job_id}"
with session_scope() as db:
job = db.scalar(select(Job).where(Job.id == job_id))
if job is None:
return Response(status=404)
if not can_access_job(job, user):
return Response(status=403)
now = datetime.now(UTC)
if job.state == "queued":
job.state = "cancelled"
job.exit_code = 1
job.finished_at = now
job.updated_at = now
append_job_log(db, job.id, "stderr", "job cancelled before execution")
elif job.state == "running":
job.state = "cancelling"
job.updated_at = now
append_job_log(db, job.id, "stderr", "job cancellation requested; attempting to terminate running process")
elif job.state == "cancelling":
return redirect(next_url)
else:
return Response("job cannot be cancelled", status=409)
return redirect(next_url)
@bp.get("/jobs/<int:job_id>/stream")
@require_login
def stream_job(job_id: int) -> Response:
@ -30,9 +93,11 @@ def stream_job(job_id: int) -> Response:
poll_seconds = float(current_app.config.get("JOB_WORKER_POLL_SECONDS", 1))
with session_scope() as db:
job = db.scalar(select(Job).where(Job.id == job_id, Job.user_id == user.id))
job = db.scalar(select(Job).where(Job.id == job_id))
if job is None:
return Response(status=404)
if not can_access_job(job, user):
return Response(status=403)
def generate():
next_seq = last_seq

42
l4d2web/routes/page_routes.py
View file

@ -81,30 +81,44 @@ def server_detail(server_id: int):
if server is None:
return Response(status=404)
blueprint = db.scalar(select(BlueprintModel).where(BlueprintModel.id == server.blueprint_id))
overlay_rows = db.execute(
select(Overlay.name)
.join(BlueprintOverlay, BlueprintOverlay.overlay_id == Overlay.id)
.where(BlueprintOverlay.blueprint_id == server.blueprint_id)
.order_by(BlueprintOverlay.position)
).all()
latest_job = db.scalar(
select(Job)
recent_job_rows = db.execute(
select(Job, User, Server)
.join(User, User.id == Job.user_id)
.outerjoin(Server, Server.id == Job.server_id)
.where(Job.server_id == server.id)
.order_by(Job.created_at.desc())
.limit(1)
)
.limit(5)
).all()
return render_template(
"server_detail.html",
server=server,
blueprint=blueprint,
overlay_names=[row[0] for row in overlay_rows],
arguments=json.loads(blueprint.arguments) if blueprint is not None else [],
config_lines=json.loads(blueprint.config) if blueprint is not None else [],
latest_job=latest_job,
recent_job_rows=recent_job_rows,
)
@bp.get("/servers/<int:server_id>/jobs")
@require_login
def server_jobs_page(server_id: int):
user = current_user()
assert user is not None
with session_scope() as db:
server = db.scalar(select(Server).where(Server.id == server_id, Server.user_id == user.id))
if server is None:
return Response(status=404)
rows = db.execute(
select(Job, User, Server)
.join(User, User.id == Job.user_id)
.outerjoin(Server, Server.id == Job.server_id)
.where(Job.server_id == server.id)
.order_by(Job.created_at.desc())
).all()
return render_template("server_jobs.html", server=server, rows=rows)
@bp.get("/overlays")
@require_login
def overlays() -> str:

37
l4d2web/services/job_worker.py
View file

@ -4,6 +4,7 @@ import subprocess
import threading
import time
from l4d2host.process import CommandCancelledError
from sqlalchemy import func, select
from sqlalchemy.orm import Session
@ -12,6 +13,7 @@ from l4d2web.models import Job, JobLog, Server
TERMINAL_JOB_STATES = {"succeeded", "failed", "cancelled"}
ACTIVE_JOB_STATES = {"running", "cancelling"}
SERVER_OPERATIONS = {"initialize", "start", "stop", "delete"}
_claim_lock = threading.Lock()
@ -38,7 +40,7 @@ def can_start(job, state: SchedulerState) -> bool:
def build_scheduler_state(session: Session) -> SchedulerState:
state = SchedulerState()
running_jobs = session.scalars(select(Job).where(Job.state == "running")).all()
running_jobs = session.scalars(select(Job).where(Job.state.in_(ACTIVE_JOB_STATES))).all()
for job in running_jobs:
if job.operation == "install":
state.install_running = True
@ -93,26 +95,43 @@ def run_job(job_id: int) -> None:
def on_stderr(line: str) -> None:
append_job_log_line(job_id, "stderr", line, max_chars=max_chars)
def should_cancel() -> bool:
with session_scope() as db:
state = db.scalar(select(Job.state).where(Job.id == job_id))
return state == "cancelling"
def raise_if_cancelled() -> None:
if should_cancel():
raise CommandCancelledError(returncode=1, cmd=[operation], output="", stderr="")
try:
if operation == "install":
l4d2_facade.install_runtime(on_stdout=on_stdout, on_stderr=on_stderr)
l4d2_facade.install_runtime(on_stdout=on_stdout, on_stderr=on_stderr, should_cancel=should_cancel)
elif operation in SERVER_OPERATIONS and server_id is None:
raise ValueError(f"{operation} job has no server_id")
elif operation == "initialize":
l4d2_facade.initialize_server(server_id, on_stdout=on_stdout, on_stderr=on_stderr)
l4d2_facade.initialize_server(server_id, on_stdout=on_stdout, on_stderr=on_stderr, should_cancel=should_cancel)
elif operation == "start":
l4d2_facade.initialize_server(server_id, on_stdout=on_stdout, on_stderr=on_stderr)
l4d2_facade.start_server(server_id, on_stdout=on_stdout, on_stderr=on_stderr)
l4d2_facade.initialize_server(server_id, on_stdout=on_stdout, on_stderr=on_stderr, should_cancel=should_cancel)
raise_if_cancelled()
l4d2_facade.start_server(server_id, on_stdout=on_stdout, on_stderr=on_stderr, should_cancel=should_cancel)
elif operation == "stop":
l4d2_facade.stop_server(server_id, on_stdout=on_stdout, on_stderr=on_stderr)
l4d2_facade.stop_server(server_id, on_stdout=on_stdout, on_stderr=on_stderr, should_cancel=should_cancel)
elif operation == "delete":
l4d2_facade.delete_server(server_id, on_stdout=on_stdout, on_stderr=on_stderr)
l4d2_facade.delete_server(server_id, on_stdout=on_stdout, on_stderr=on_stderr, should_cancel=should_cancel)
else:
raise ValueError(f"unknown job operation: {operation}")
if server_id is not None:
refresh_server_actual_state_after_job(job_id, server_id)
finish_job(job_id, "succeeded", 0)
except CommandCancelledError as exc:
error = "job cancelled; runtime state may be partial"
append_job_log_line(job_id, "stderr", error, max_chars=max_chars)
if server_id is not None:
refresh_server_actual_state_after_job(job_id, server_id)
exit_code = exc.returncode if exc.returncode is not None else 1
finish_job(job_id, "cancelled", exit_code, error=error)
except subprocess.CalledProcessError as exc:
error = exc.stderr or str(exc)
if exc.stderr:
@ -154,9 +173,9 @@ def append_job_log_line(job_id: int, stream: str, line: str, max_chars: int = 40
def recover_stale_jobs() -> int:
now = datetime.now(UTC)
with session_scope() as db:
jobs = db.scalars(select(Job).where(Job.state == "running")).all()
jobs = db.scalars(select(Job).where(Job.state.in_(ACTIVE_JOB_STATES))).all()
for job in jobs:
job.state = "failed"
job.state = "cancelled" if job.state == "cancelling" else "failed"
job.exit_code = 1
job.finished_at = now
job.updated_at = now

20
l4d2web/services/l4d2_facade.py
View file

@ -41,32 +41,32 @@ def load_server_blueprint_bundle(server_id: int) -> tuple[Server, Blueprint, lis
return server, blueprint, overlay_names
def install_runtime(on_stdout=None, on_stderr=None) -> None:
SteamInstaller().install_or_update(on_stdout=on_stdout, on_stderr=on_stderr)
def install_runtime(on_stdout=None, on_stderr=None, should_cancel=None) -> None:
SteamInstaller().install_or_update(on_stdout=on_stdout, on_stderr=on_stderr, should_cancel=should_cancel)
def initialize_server(server_id: int, on_stdout=None, on_stderr=None) -> None:
def initialize_server(server_id: int, on_stdout=None, on_stderr=None, should_cancel=None) -> None:
server, blueprint, overlay_names = load_server_blueprint_bundle(server_id)
spec_path = write_temp_spec(build_server_spec_payload(server, blueprint, overlay_names))
try:
initialize_instance(server.name, spec_path, on_stdout=on_stdout, on_stderr=on_stderr)
initialize_instance(server.name, spec_path, on_stdout=on_stdout, on_stderr=on_stderr, should_cancel=should_cancel)
finally:
spec_path.unlink(missing_ok=True)
def start_server(server_id: int, on_stdout=None, on_stderr=None) -> None:
def start_server(server_id: int, on_stdout=None, on_stderr=None, should_cancel=None) -> None:
server, _, _ = load_server_blueprint_bundle(server_id)
start_instance(server.name, on_stdout=on_stdout, on_stderr=on_stderr)
start_instance(server.name, on_stdout=on_stdout, on_stderr=on_stderr, should_cancel=should_cancel)
def stop_server(server_id: int, on_stdout=None, on_stderr=None) -> None:
def stop_server(server_id: int, on_stdout=None, on_stderr=None, should_cancel=None) -> None:
server, _, _ = load_server_blueprint_bundle(server_id)
stop_instance(server.name, on_stdout=on_stdout, on_stderr=on_stderr)
stop_instance(server.name, on_stdout=on_stdout, on_stderr=on_stderr, should_cancel=should_cancel)
def delete_server(server_id: int, on_stdout=None, on_stderr=None) -> None:
def delete_server(server_id: int, on_stdout=None, on_stderr=None, should_cancel=None) -> None:
server, _, _ = load_server_blueprint_bundle(server_id)
delete_instance(server.name, on_stdout=on_stdout, on_stderr=on_stderr)
delete_instance(server.name, on_stdout=on_stdout, on_stderr=on_stderr, should_cancel=should_cancel)
def server_status(server_name: str):

6
l4d2web/static/css/tokens.css
View file

@ -11,8 +11,8 @@
--color-warning: #a15c07;
--color-success: #067647;
--color-focus: #2563eb;
--color-log-bg: #111827;
--color-log-text: #e5e7eb;
--color-log-bg: #f8fafc;
--color-log-text: #18181b;
--space-base: 0.25rem;
--space-xs: var(--space-base);
@ -43,6 +43,8 @@
--color-warning: #fcd34d;
--color-success: #86efac;
--color-focus: #bfdbfe;
--color-log-bg: #111827;
--color-log-text: #e5e7eb;
}
}

42
l4d2web/templates/_job_table.html Normal file
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@ -0,0 +1,42 @@
<table class="table">
<thead>
<tr>
<th>ID</th>
<th>Operation</th>
<th>State</th>
{% if show_user %}<th>User</th>{% endif %}
{% if show_server %}<th>Server</th>{% endif %}
<th>Created</th>
<th>Finished</th>
{% if show_cancel %}<th>Action</th>{% endif %}
</tr>
</thead>
<tbody>
{% for job, user, server in rows %}
<tr>
<td><a href="/jobs/{{ job.id }}">#{{ job.id }}</a></td>
<td>{{ job.operation }}</td>
<td>{{ job.state }}</td>
{% if show_user %}<td>{{ user.username }}</td>{% endif %}
{% if show_server %}<td>{% if server %}<a href="/servers/{{ server.id }}">{{ server.name }}</a>{% else %}-{% endif %}</td>{% endif %}
<td>{{ job.created_at }}</td>
<td>{{ job.finished_at or "-" }}</td>
{% if show_cancel %}
<td>
{% if job.state in ["queued", "running"] %}
<form method="post" action="/jobs/{{ job.id }}/cancel" class="inline-form">
<input type="hidden" name="csrf_token" value="{{ session.get('csrf_token', '') }}">
<input type="hidden" name="next" value="{{ cancel_next or request.path }}">
<button class="danger" type="submit">cancel</button>
</form>
{% else %}
<span class="muted">-</span>
{% endif %}
</td>
{% endif %}
</tr>
{% else %}
<tr><td colspan="8" class="muted">No jobs found.</td></tr>
{% endfor %}
</tbody>
</table>

23
l4d2web/templates/admin_jobs.html
View file

@ -5,23 +5,10 @@
{% block content %}
<section class="panel">
<h1>Jobs</h1>
<table class="table">
<thead><tr><th>ID</th><th>Operation</th><th>State</th><th>User</th><th>Server</th><th>Created</th><th>Finished</th></tr></thead>
<tbody>
{% for job, user, server in rows %}
<tr>
<td>{{ job.id }}</td>
<td>{{ job.operation }}</td>
<td>{{ job.state }}</td>
<td>{{ user.username }}</td>
<td>{% if server %}<a href="/servers/{{ server.id }}">{{ server.name }}</a>{% else %}-{% endif %}</td>
<td>{{ job.created_at }}</td>
<td>{{ job.finished_at or "-" }}</td>
</tr>
{% else %}
<tr><td colspan="7" class="muted">No jobs found.</td></tr>
{% endfor %}
</tbody>
</table>
{% set show_user = true %}
{% set show_server = true %}
{% set show_cancel = true %}
{% set cancel_next = "/admin/jobs" %}
{% include "_job_table.html" %}
</section>
{% endblock %}

36
l4d2web/templates/job_detail.html Normal file
View file

@ -0,0 +1,36 @@
{% extends "base.html" %}
{% block title %}Job #{{ job.id }} | left4me{% endblock %}
{% block content %}
<section class="panel">
<div class="page-heading">
<h1>Job #{{ job.id }}</h1>
{% if job.state in ["queued", "running"] %}
<form method="post" action="/jobs/{{ job.id }}/cancel" class="inline-form">
<input type="hidden" name="csrf_token" value="{{ session.get('csrf_token', '') }}">
<input type="hidden" name="next" value="/jobs/{{ job.id }}">
<button class="danger" type="submit">cancel</button>
</form>
{% endif %}
</div>
<table class="definition-table">
<tbody>
<tr><th>Operation</th><td>{{ job.operation }}</td></tr>
<tr><th>State</th><td>{{ job.state }}</td></tr>
<tr><th>User</th><td>{{ owner.username }}</td></tr>
<tr><th>Server</th><td>{% if server %}<a href="/servers/{{ server.id }}">{{ server.name }}</a>{% else %}-{% endif %}</td></tr>
<tr><th>Created</th><td>{{ job.created_at }}</td></tr>
<tr><th>Started</th><td>{{ job.started_at or "-" }}</td></tr>
<tr><th>Finished</th><td>{{ job.finished_at or "-" }}</td></tr>
<tr><th>Exit code</th><td>{{ job.exit_code if job.exit_code is not none else "-" }}</td></tr>
</tbody>
</table>
</section>
<section class="panel">
<h2>Job Logs</h2>
<pre class="log-stream" data-sse-url="/jobs/{{ job.id }}/stream"></pre>
</section>
{% endblock %}

29
l4d2web/templates/server_detail.html
View file

@ -33,25 +33,16 @@
</section>
<section class="panel">
<h2>Blueprint</h2>
<h3>Overlay order</h3>
<ol>
{% for name in overlay_names %}<li>{{ name }}</li>{% else %}<li class="muted">No overlays configured.</li>{% endfor %}
</ol>
<h3>Arguments</h3>
<pre class="code-block">{{ arguments | join('\n') }}</pre>
<h3>Config</h3>
<pre class="code-block">{{ config_lines | join('\n') }}</pre>
</section>
<section class="panel">
<h2>Current / Recent Job</h2>
{% if latest_job %}
<table class="definition-table"><tbody><tr><th>Operation</th><td>{{ latest_job.operation }}</td></tr><tr><th>State</th><td>{{ latest_job.state }}</td></tr></tbody></table>
<pre class="log-stream" data-sse-url="/jobs/{{ latest_job.id }}/stream"></pre>
{% else %}
<p class="muted">No jobs have run for this server.</p>
{% endif %}
<div class="page-heading">
<h2>Recent Jobs</h2>
<a href="/servers/{{ server.id }}/jobs">View all jobs</a>
</div>
{% set rows = recent_job_rows %}
{% set show_user = false %}
{% set show_server = false %}
{% set show_cancel = true %}
{% set cancel_next = "/servers/" ~ server.id %}
{% include "_job_table.html" %}
</section>
<section class="panel">

17
l4d2web/templates/server_jobs.html Normal file
View file

@ -0,0 +1,17 @@
{% extends "base.html" %}
{% block title %}Jobs for {{ server.name }} | left4me{% endblock %}
{% block content %}
<section class="panel">
<div class="page-heading">
<h1>Jobs for {{ server.name }}</h1>
<a href="/servers/{{ server.id }}">Back to server</a>
</div>
{% set show_user = false %}
{% set show_server = false %}
{% set show_cancel = true %}
{% set cancel_next = "/servers/" ~ server.id ~ "/jobs" %}
{% include "_job_table.html" %}
</section>
{% endblock %}

55
l4d2web/tests/test_job_worker.py
View file

@ -6,6 +6,7 @@ import subprocess
import pytest
from sqlalchemy import select
from l4d2host.process import CommandCancelledError
from l4d2web.auth import hash_password
from l4d2web.db import init_db, session_scope
from l4d2web.models import Blueprint, Job, Server, User
@ -122,12 +123,14 @@ def test_successful_start_job_logs_and_refreshes_server_state(seeded_worker, mon
job_id = add_job(ids.user, "start", server_id=ids.server_one)
calls = []
def fake_initialize(server_id, *, on_stdout=None, on_stderr=None):
def fake_initialize(server_id, *, on_stdout=None, on_stderr=None, should_cancel=None):
del should_cancel
calls.append(("initialize", server_id))
on_stdout("initialized")
on_stderr("init warning")
def fake_start(server_id, *, on_stdout=None, on_stderr=None):
def fake_start(server_id, *, on_stdout=None, on_stderr=None, should_cancel=None):
del should_cancel
calls.append(("start", server_id))
on_stdout("started")
@ -245,6 +248,54 @@ def test_same_server_jobs_do_not_overlap(seeded_worker, monkeypatch) -> None:
assert load_job(queued_id).state == "queued"
def test_same_server_jobs_wait_while_job_is_cancelling(seeded_worker, monkeypatch) -> None:
app, ids = seeded_worker
add_job(ids.user, "start", server_id=ids.server_one, state="cancelling")
queued_id = add_job(ids.user, "stop", server_id=ids.server_one)
monkeypatch.setattr(l4d2_facade, "stop_server", lambda server_id, **kwargs: pytest.fail("must not run"))
with app.app_context():
assert run_worker_once() is False
assert load_job(queued_id).state == "queued"
def test_cancelled_process_finishes_job_as_cancelled(seeded_worker, monkeypatch) -> None:
app, ids = seeded_worker
job_id = add_job(ids.user, "stop", server_id=ids.server_one)
def fake_stop(server_id, *, on_stdout=None, on_stderr=None, should_cancel=None):
assert server_id == ids.server_one
assert should_cancel is not None
with session_scope() as session:
job = session.scalar(select(Job).where(Job.id == job_id))
assert job is not None
job.state = "cancelling"
assert should_cancel() is True
on_stderr("terminating")
raise CommandCancelledError(returncode=-15, cmd=["stop"], output="", stderr="")
monkeypatch.setattr(l4d2_facade, "stop_server", fake_stop)
monkeypatch.setattr(l4d2_facade, "server_status", lambda name: SimpleNamespace(state="unknown"))
with app.app_context():
assert run_worker_once() is True
with session_scope() as session:
job = session.scalar(select(Job).where(Job.id == job_id))
server = session.scalar(select(Server).where(Server.id == ids.server_one))
lines = [row.line for row in job_logs_for(session, job_id)]
assert job is not None
assert job.state == "cancelled"
assert job.exit_code == -15
assert job.finished_at is not None
assert server is not None
assert server.last_error == "job cancelled; runtime state may be partial"
assert "terminating" in lines
assert "job cancelled; runtime state may be partial" in lines
def test_different_server_jobs_can_be_claimed_while_other_server_runs(seeded_worker, monkeypatch) -> None:
app, ids = seeded_worker
add_job(ids.user, "start", server_id=ids.server_one, state="running")

170
l4d2web/tests/test_pages.py
View file

@ -4,7 +4,7 @@ from pathlib import Path
from l4d2web.app import create_app
from l4d2web.auth import hash_password
from l4d2web.db import init_db, session_scope
from l4d2web.models import Blueprint, BlueprintOverlay, Job, Overlay, Server, User
from l4d2web.models import Blueprint, BlueprintOverlay, Job, JobLog, Overlay, Server, User
@pytest.fixture
@ -113,6 +113,16 @@ def test_css_tokens_define_neutral_light_and_dark_theme() -> None:
assert "radial-gradient" not in Path("l4d2web/static/css/layout.css").read_text()
def test_log_tokens_follow_light_and_dark_theme() -> None:
css = Path("l4d2web/static/css/tokens.css").read_text()
assert "--color-log-bg: #f8fafc;" in css
assert "--color-log-text: #18181b;" in css
dark_theme = css.split("@media (prefers-color-scheme: dark)", 1)[1]
assert "--color-log-bg: #111827;" in dark_theme
assert "--color-log-text: #e5e7eb;" in dark_theme
def test_server_detail_shows_operations_and_logs(auth_client_with_server) -> None:
response = auth_client_with_server.get("/servers/1")
text = response.get_data(as_text=True)
@ -124,9 +134,134 @@ def test_server_detail_shows_operations_and_logs(auth_client_with_server) -> Non
assert 'action="/servers/1/initialize"' in text
assert 'action="/servers/1/delete"' in text
assert 'href="/blueprints/1"' in text
assert "<h2>Blueprint</h2>" not in text
assert "standard" not in text
assert 'data-sse-url="/servers/1/logs/stream"' in text
def test_server_detail_shows_recent_jobs(auth_client_with_server) -> None:
with session_scope() as session:
job = Job(user_id=1, server_id=1, operation="start", state="queued")
session.add(job)
session.flush()
job_id = job.id
response = auth_client_with_server.get("/servers/1")
text = response.get_data(as_text=True)
assert response.status_code == 200
assert "Recent Jobs" in text
assert 'href="/servers/1/jobs"' in text
assert f'href="/jobs/{job_id}"' in text
assert 'action="/jobs/' in text
def test_server_jobs_page_lists_server_jobs(auth_client_with_server) -> None:
with session_scope() as session:
session.add(Job(user_id=1, server_id=1, operation="initialize", state="succeeded"))
session.add(Job(user_id=1, server_id=1, operation="stop", state="queued"))
response = auth_client_with_server.get("/servers/1/jobs")
text = response.get_data(as_text=True)
assert response.status_code == 200
assert "Jobs for alpha" in text
assert "initialize" in text
assert "stop" in text
assert 'href="/servers/1"' in text
def test_job_detail_shows_metadata_and_log_stream(auth_client_with_server) -> None:
with session_scope() as session:
job = Job(user_id=1, server_id=1, operation="start", state="running")
session.add(job)
session.flush()
session.add(JobLog(job_id=job.id, seq=1, stream="stdout", line="starting"))
job_id = job.id
response = auth_client_with_server.get(f"/jobs/{job_id}")
text = response.get_data(as_text=True)
assert response.status_code == 200
assert f"Job #{job_id}" in text
assert "start" in text
assert "running" in text
assert 'href="/servers/1"' in text
assert f'data-sse-url="/jobs/{job_id}/stream"' in text
def test_owner_can_cancel_queued_job(auth_client_with_server) -> None:
with session_scope() as session:
job = Job(user_id=1, server_id=1, operation="stop", state="queued")
session.add(job)
session.flush()
job_id = job.id
with auth_client_with_server.session_transaction() as sess:
sess["csrf_token"] = "test-token"
response = auth_client_with_server.post(
f"/jobs/{job_id}/cancel",
data={"next": f"/jobs/{job_id}"},
headers={"X-CSRF-Token": "test-token"},
)
assert response.status_code == 302
assert response.headers["Location"].endswith(f"/jobs/{job_id}")
with session_scope() as session:
cancelled = session.query(Job).filter(Job.id == job_id).one()
lines = session.query(JobLog).filter(JobLog.job_id == job_id).all()
assert cancelled.state == "cancelled"
assert cancelled.exit_code == 1
assert cancelled.finished_at is not None
assert [line.line for line in lines] == ["job cancelled before execution"]
def test_owner_can_request_running_job_cancel(auth_client_with_server) -> None:
with session_scope() as session:
job = Job(user_id=1, server_id=1, operation="start", state="running")
session.add(job)
session.flush()
job_id = job.id
with auth_client_with_server.session_transaction() as sess:
sess["csrf_token"] = "test-token"
response = auth_client_with_server.post(
f"/jobs/{job_id}/cancel",
data={"next": f"/jobs/{job_id}"},
headers={"X-CSRF-Token": "test-token"},
)
assert response.status_code == 302
with session_scope() as session:
cancelling = session.query(Job).filter(Job.id == job_id).one()
lines = session.query(JobLog).filter(JobLog.job_id == job_id).all()
assert cancelling.state == "cancelling"
assert cancelling.finished_at is None
assert [line.line for line in lines] == ["job cancellation requested; attempting to terminate running process"]
def test_non_owner_cannot_view_or_cancel_job(auth_client_with_server) -> None:
with session_scope() as session:
other = User(username="other", password_digest=hash_password("secret"), admin=False)
session.add(other)
session.flush()
job = Job(user_id=other.id, server_id=None, operation="install", state="queued")
session.add(job)
session.flush()
job_id = job.id
with auth_client_with_server.session_transaction() as sess:
sess["csrf_token"] = "test-token"
assert auth_client_with_server.get(f"/jobs/{job_id}").status_code == 403
assert (
auth_client_with_server.post(f"/jobs/{job_id}/cancel", headers={"X-CSRF-Token": "test-token"}).status_code
== 403
)
def test_servers_page_links_server_names(auth_client_with_server) -> None:
response = auth_client_with_server.get("/servers")
text = response.get_data(as_text=True)
@ -155,6 +290,7 @@ def test_admin_can_use_admin_pages(tmp_path, monkeypatch) -> None:
admin = User(username="admin", password_digest=hash_password("secret"), admin=True)
session.add(admin)
session.flush()
session.add(Job(user_id=admin.id, server_id=None, operation="install", state="queued"))
admin_id = admin.id
client = app.test_client()
@ -165,10 +301,40 @@ def test_admin_can_use_admin_pages(tmp_path, monkeypatch) -> None:
assert admin_page.status_code == 200
assert 'action="/admin/install"' in admin_page.get_data(as_text=True)
assert client.get("/admin/users").status_code == 200
assert client.get("/admin/jobs").status_code == 200
jobs_response = client.get("/admin/jobs")
assert jobs_response.status_code == 200
assert 'href="/jobs/1"' in jobs_response.get_data(as_text=True)
assert 'action="/jobs/1/cancel"' in jobs_response.get_data(as_text=True)
assert 'href="/admin"' in client.get("/dashboard").get_data(as_text=True)
def test_admin_can_view_other_users_job(tmp_path, monkeypatch) -> None:
db_url = f"sqlite:///{tmp_path/'admin-job-view.db'}"
monkeypatch.setenv("DATABASE_URL", db_url)
app = create_app({"TESTING": True, "DATABASE_URL": db_url, "SECRET_KEY": "test"})
init_db()
with session_scope() as session:
admin = User(username="admin", password_digest=hash_password("secret"), admin=True)
user = User(username="alice", password_digest=hash_password("secret"), admin=False)
session.add_all([admin, user])
session.flush()
job = Job(user_id=user.id, server_id=None, operation="install", state="queued")
session.add(job)
session.flush()
admin_id = admin.id
job_id = job.id
client = app.test_client()
with client.session_transaction() as sess:
sess["user_id"] = admin_id
response = client.get(f"/jobs/{job_id}")
assert response.status_code == 200
assert "alice" in response.get_data(as_text=True)
def test_admin_can_enqueue_runtime_install_job(tmp_path, monkeypatch) -> None:
db_url = f"sqlite:///{tmp_path/'admin-install.db'}"
monkeypatch.setenv("DATABASE_URL", db_url)