unsloth/studio/backend/tests/test_api_monitor.py
danielhanchen 88bf2eacfb Let remove win over flag validation, and make Clear log clear shared rows
An explicit remove ran the launch-flag validation first, so a form still
carrying a rejected flag raised a 400 and left the override in place. Nothing is
stored on that path, so there is nothing to validate; remove now short-circuits
it, which is what the branch below already claims to do.

Clear log dropped only the caller's own rows, but a lifecycle row is shared: it
is visible to everyone and owned by no one, so those rows survived and the
reload straight after the click brought them back, leaving the button visibly
ineffective. Deleting them is not an option either, since that erases another
caller's history. They are now hidden per subject, so the clear is true for that
caller and harmless to the rest. A shared row that is still running is live
state rather than history, so it stays visible, and the hidden ids are pruned
against the ring buffer so they cannot accumulate.
2026-07-28 15:25:04 +00:00

521 lines
18 KiB
Python

# SPDX-License-Identifier: AGPL-3.0-only
# Copyright 2026-present the Unsloth AI Inc. team. All rights reserved. See /studio/LICENSE.AGPL-3.0
from core.inference.api_monitor import ApiMonitor, _trim
def test_api_monitor_tracks_reply_usage_and_context():
monitor = ApiMonitor(max_entries = 3)
entry_id = monitor.start(
endpoint = "/v1/chat/completions",
method = "POST",
model = "local-model",
prompt = "user: hello",
context_length = 100,
)
monitor.append_reply(entry_id, "hi")
monitor.append_reply(entry_id, " there")
monitor.set_usage(
entry_id,
prompt_tokens = 4,
completion_tokens = 6,
)
monitor.finish(entry_id)
[entry] = monitor.snapshot()
assert entry["status"] == "completed"
assert entry["reply"] == "hi there"
assert entry["total_tokens"] == 10
assert entry["context_usage"] == 0.1
assert entry["duration_ms"] is not None
def test_api_monitor_summary_omits_full_prompt_and_reply():
monitor = ApiMonitor(max_entries = 3)
entry_id = monitor.start(
endpoint = "/v1/chat/completions",
method = "POST",
model = "local-model",
prompt = "p" * 500,
)
monitor.set_reply(entry_id, "r" * 500)
[summary] = monitor.snapshot(include_details = False)
assert "prompt" not in summary
assert "reply" not in summary
assert summary["prompt_preview"].endswith("...")
assert summary["reply_preview"].endswith("...")
assert summary["prompt_truncated"] is True
assert summary["reply_truncated"] is True
detail = monitor.get(entry_id)
assert detail is not None
assert detail["prompt"] == "p" * 500
assert detail["reply"] == "r" * 500
def test_api_monitor_filters_entries_by_subject():
monitor = ApiMonitor(max_entries = 3)
alice = monitor.start(
endpoint = "/v1/chat/completions",
method = "POST",
model = "m",
prompt = "alice prompt",
subject = "alice",
)
bob = monitor.start(
endpoint = "/v1/chat/completions",
method = "POST",
model = "m",
prompt = "bob prompt",
subject = "bob",
)
monitor.finish(bob)
alice_entries = monitor.snapshot(subject = "alice")
assert [entry["id"] for entry in alice_entries] == [alice]
assert monitor.get(bob, subject = "alice") is None
assert monitor.get(bob, subject = "bob")["id"] == bob
assert monitor.active_count(subject = "alice") == 1
assert monitor.active_count(subject = "bob") == 0
def test_api_monitor_keeps_bounded_recent_history():
monitor = ApiMonitor(max_entries = 2)
first = monitor.start(
endpoint = "/v1/chat/completions",
method = "POST",
model = "m",
prompt = "first",
)
second = monitor.start(
endpoint = "/v1/chat/completions",
method = "POST",
model = "m",
prompt = "second",
)
third = monitor.start(
endpoint = "/v1/chat/completions",
method = "POST",
model = "m",
prompt = "third",
)
monitor.finish(first)
monitor.finish(second)
monitor.finish(third)
entries = monitor.snapshot()
ids = [entry["id"] for entry in entries]
assert ids[0] == third
assert [entry["prompt"] for entry in entries] == ["third", "second"]
assert first not in ids
assert monitor.active_count() == 0
def test_api_monitor_keeps_running_entries_beyond_history_limit():
monitor = ApiMonitor(max_entries = 1)
running = monitor.start(
endpoint = "/v1/chat/completions",
method = "POST",
model = "m",
prompt = "running",
)
for prompt in ("done-1", "done-2", "done-3"):
entry_id = monitor.start(
endpoint = "/v1/chat/completions",
method = "POST",
model = "m",
prompt = prompt,
)
monitor.finish(entry_id)
entries = monitor.snapshot()
ids = [entry["id"] for entry in entries]
assert running in ids
assert monitor.active_count() == 1
monitor.finish(running)
[entry] = monitor.snapshot()
assert entry["id"] == running
assert entry["status"] == "completed"
assert monitor.active_count() == 0
def test_api_monitor_finish_is_idempotent():
monitor = ApiMonitor(max_entries = 2)
entry_id = monitor.start(
endpoint = "/v1/chat/completions",
method = "POST",
model = "m",
prompt = "hi",
)
monitor.finish(entry_id)
first = monitor.snapshot()[0]
monitor.finish(entry_id)
second = monitor.snapshot()[0]
assert first["finished_at"] == second["finished_at"]
assert first["duration_ms"] == second["duration_ms"]
def test_api_monitor_preserves_authoritative_total_tokens():
monitor = ApiMonitor(max_entries = 2)
entry_id = monitor.start(
endpoint = "/v1/chat/completions",
method = "POST",
model = "m",
prompt = "hi",
)
monitor.set_usage(
entry_id,
prompt_tokens = 10,
completion_tokens = 20,
total_tokens = 33,
)
# A later partial chunk omitting `total_tokens` must not clobber 33.
monitor.set_usage(entry_id, prompt_tokens = 11)
assert monitor.snapshot()[0]["total_tokens"] == 33
def test_api_monitor_recomputes_derived_total_tokens():
monitor = ApiMonitor(max_entries = 2)
entry_id = monitor.start(
endpoint = "/v1/chat/completions",
method = "POST",
model = "m",
prompt = "hi",
)
monitor.set_usage(entry_id, prompt_tokens = 10)
assert monitor.snapshot()[0]["total_tokens"] == 10
monitor.set_usage(entry_id, completion_tokens = 20)
entry = monitor.snapshot()[0]
assert entry["prompt_tokens"] == 10
assert entry["completion_tokens"] == 20
assert entry["total_tokens"] == 30
def test_api_monitor_duration_non_negative_under_clock_step(monkeypatch):
import core.inference.api_monitor as m
fake_now = [1000.0]
monkeypatch.setattr(m.time, "time", lambda: fake_now[0])
monitor = ApiMonitor(max_entries = 1)
entry_id = monitor.start(
endpoint = "/x",
method = "POST",
model = "m",
prompt = "hi",
)
fake_now[0] = 500.0
monitor.finish(entry_id)
assert monitor.snapshot()[0]["duration_ms"] >= 0
def test_api_monitor_trim_guards_tiny_limit():
assert _trim("abcdefgh", 2) == ".."
assert _trim("abcdefgh", 0) == ""
assert _trim("abcdefgh", 3) == "..."
assert _trim("abcdefgh", 4) == "a..."
assert _trim("abcdefgh", 100) == "abcdefgh"
def test_api_monitor_append_reply_caps_without_regrowing():
import core.inference.api_monitor as m
monitor = ApiMonitor(max_entries = 1)
entry_id = monitor.start(
endpoint = "/v1/chat/completions",
method = "POST",
model = "m",
prompt = "go",
)
monitor.append_reply(entry_id, "x" * (m._MAX_REPLY_CHARS + 500))
capped = monitor.snapshot()[0]["reply"]
assert len(capped) == m._MAX_REPLY_CHARS and capped.endswith("...")
# Chunks past the cap must not change or grow the stored preview.
monitor.append_reply(entry_id, "y" * 1000)
assert monitor.snapshot()[0]["reply"] == capped
def test_api_monitor_append_reply_exact_cap_then_more_marks_truncated():
import core.inference.api_monitor as m
monitor = ApiMonitor(max_entries = 1)
entry_id = monitor.start(
endpoint = "/v1/chat/completions",
method = "POST",
model = "m",
prompt = "go",
)
# A reply landing exactly on the cap has no "..." marker yet.
monitor.append_reply(entry_id, "x" * m._MAX_REPLY_CHARS)
assert not monitor.snapshot()[0]["reply"].endswith("...")
# One more chunk must record the truncation, not silently freeze.
monitor.append_reply(entry_id, "y")
reply = monitor.snapshot()[0]["reply"]
assert len(reply) == m._MAX_REPLY_CHARS and reply.endswith("...")
def test_api_monitor_clear_is_scoped_to_one_subject():
# Every other read on the monitor is subject-scoped. An unscoped clear from
# the route would let one caller erase another's history and zero their
# active count in the middle of a generation.
monitor = ApiMonitor(max_entries = 4)
alice = monitor.start(
endpoint = "/v1/chat/completions",
method = "POST",
model = "m",
prompt = "alice prompt",
subject = "alice",
)
bob = monitor.start(
endpoint = "/v1/chat/completions",
method = "POST",
model = "m",
prompt = "bob prompt",
subject = "bob",
)
monitor.clear(subject = "alice")
assert monitor.snapshot(subject = "alice") == []
assert [entry["id"] for entry in monitor.snapshot(subject = "bob")] == [bob]
assert monitor.active_count(subject = "bob") == 1
assert monitor.get(alice, subject = "alice") is None
# Passing no subject is the explicit "everything" path.
monitor.clear()
assert monitor.snapshot(subject = "bob") == []
def test_api_monitor_records_whether_the_caller_used_an_api_key():
# Studio's own chat hits these endpoints with a session JWT. The floating
# panel keys its auto-open off this flag, so mislabelling in-app chat as API
# traffic pops the panel over the composer mid-conversation.
monitor = ApiMonitor(max_entries = 4)
ui = monitor.start(
endpoint = "/api/inference/chat",
method = "POST",
model = "m",
prompt = "hi",
subject = "u",
)
api = monitor.start(
endpoint = "/v1/chat/completions",
method = "POST",
model = "m",
prompt = "hi",
subject = "u",
via_api_key = True,
)
by_id = {entry["id"]: entry for entry in monitor.snapshot(subject = "u")}
assert by_id[ui]["via_api_key"] is False
assert by_id[api]["via_api_key"] is True
def test_api_monitor_disabled_is_noop():
monitor = ApiMonitor(max_entries = 3, enabled = False)
request_id = monitor.start(
endpoint = "/v1/chat/completions",
method = "POST",
model = "local-model",
prompt = "user: hello",
context_length = 100,
)
load_id = monitor.record_lifecycle(
event = "load",
model = "local-model",
running = True,
)
unload_id = monitor.record_lifecycle(
event = "unload",
model = "local-model",
)
assert request_id == load_id == unload_id == ""
# Every mutator must be a safe no-op on the falsy id.
monitor.append_reply(request_id, "hi")
monitor.set_reply(request_id, "hi")
monitor.set_usage(request_id, prompt_tokens = 4, completion_tokens = 6)
monitor.relabel(load_id, "renamed-model")
monitor.set_progress(load_id, 50)
monitor.finish(load_id)
monitor.fail_open(load_id, "boom")
monitor.fail(request_id, "boom")
monitor.discard(unload_id)
assert monitor.snapshot() == []
assert monitor.active_count() == 0
assert monitor.get(request_id) is None
def test_api_monitor_disable_env_var_truthy(monkeypatch):
import core.inference.api_monitor as m
for value in ("1", "true", "yes", "on", "TRUE", "On", " yes "):
monkeypatch.setenv(m._DISABLE_ENV, value)
assert m._api_monitor_disabled() is True, value
def test_api_monitor_disable_env_var_falsy(monkeypatch):
import core.inference.api_monitor as m
for value in ("", "0", "false", "no", "off", "disabled"):
monkeypatch.setenv(m._DISABLE_ENV, value)
assert m._api_monitor_disabled() is False, value
def test_api_monitor_disable_env_var_unset(monkeypatch):
import core.inference.api_monitor as m
monkeypatch.delenv(m._DISABLE_ENV, raising = False)
assert m._api_monitor_disabled() is False
# ── model lifecycle rows (load / unload) ────────────────────────────
def test_lifecycle_load_row_opens_running_then_closes():
monitor = ApiMonitor(max_entries = 5)
event_id = monitor.record_lifecycle(event = "load", model = "org/A-GGUF", running = True)
row = monitor.snapshot()[0]
assert row["kind"] == "lifecycle" and row["event"] == "load"
assert row["status"] == "running" and row["duration_ms"] is None
# A load in progress is not an in-flight API request.
assert monitor.active_count() == 0
monitor.relabel(event_id, "org/A-GGUF:Q4_K_M")
monitor.finish(event_id)
row = monitor.snapshot()[0]
assert row["status"] == "completed"
assert row["model"] == "org/A-GGUF:Q4_K_M"
assert row["duration_ms"] is not None
def test_lifecycle_unload_row_is_terminal_on_arrival():
monitor = ApiMonitor(max_entries = 5)
monitor.record_lifecycle(event = "unload", model = "org/A-GGUF", reason = "idle")
row = monitor.snapshot()[0]
assert row["status"] == "completed"
assert (row["event"], row["reason"]) == ("unload", "idle")
assert monitor.active_count() == 0
def test_lifecycle_rows_are_visible_to_every_subject():
# A load is server-wide, so it must not vanish for other API keys like a request does.
monitor = ApiMonitor(max_entries = 5)
monitor.start(
endpoint = "/v1/chat/completions",
method = "POST",
model = "m",
prompt = "hi",
subject = "alice",
)
event_id = monitor.record_lifecycle(event = "unload", model = "org/A-GGUF")
bob = monitor.snapshot(subject = "bob")
assert [r["kind"] for r in bob] == ["lifecycle"]
assert monitor.get(event_id, subject = "bob") is not None
assert len(monitor.snapshot(subject = "alice")) == 2
def test_request_rows_stay_private_to_their_subject():
monitor = ApiMonitor(max_entries = 5)
rid = monitor.start(
endpoint = "/v1/chat/completions",
method = "POST",
model = "m",
prompt = "hi",
subject = "alice",
)
assert monitor.snapshot(subject = "bob") == []
assert monitor.get(rid, subject = "bob") is None
def test_discard_drops_a_row_that_never_happened():
# A load that found the model already resident must leave no trace.
monitor = ApiMonitor(max_entries = 5)
event_id = monitor.record_lifecycle(event = "load", model = "org/A-GGUF", running = True)
monitor.discard(event_id)
assert monitor.snapshot() == []
monitor.discard(event_id) # idempotent
def test_fail_open_never_touches_a_finished_row():
# Called from a finally, so it must not stamp an error onto a load that succeeded.
monitor = ApiMonitor(max_entries = 5)
event_id = monitor.record_lifecycle(event = "load", model = "org/A-GGUF", running = True)
monitor.finish(event_id)
monitor.fail_open(event_id, "Load did not complete")
row = monitor.snapshot()[0]
assert row["status"] == "completed" and row["error"] is None
still_open = monitor.record_lifecycle(event = "load", model = "org/B-GGUF", running = True)
monitor.fail_open(still_open, "Load did not complete")
assert monitor.snapshot()[0]["status"] == "error"
def test_lifecycle_rows_share_the_retention_budget():
monitor = ApiMonitor(max_entries = 2)
for i in range(4):
monitor.record_lifecycle(event = "unload", model = f"org/M{i}")
models = [r["model"] for r in monitor.snapshot()]
assert models == ["org/M3", "org/M2"]
def test_request_rows_report_kind_request():
monitor = ApiMonitor(max_entries = 2)
monitor.start(endpoint = "/v1/chat/completions", method = "POST", model = "m", prompt = "hi")
assert monitor.snapshot()[0]["kind"] == "request"
def test_clear_hides_shared_lifecycle_rows_for_that_caller_only():
"""A lifecycle row is shared, so it is visible to every caller but owned by
none. A subject-scoped clear dropped only that subject's own rows, so the
shared ones survived and the reload straight after "Clear log" brought them
back: the button visibly did nothing to them. Dropping them outright is not
an option either, since that erases another caller's history.
"""
monitor = ApiMonitor(max_entries = 10)
mine = monitor.start(
endpoint = "/v1/chat/completions",
method = "POST",
model = "org/A",
prompt = "user: hi",
subject = "alice",
)
monitor.finish(mine)
shared = monitor.record_lifecycle(event = "unload", model = "org/A")
assert {e["id"] for e in monitor.snapshot(subject = "alice")} == {mine, shared}
assert {e["id"] for e in monitor.snapshot(subject = "bob")} == {shared}
monitor.clear(subject = "alice")
assert monitor.snapshot(subject = "alice") == []
# Bob's view is untouched: the row is hidden for alice, not deleted.
assert {e["id"] for e in monitor.snapshot(subject = "bob")} == {shared}
assert monitor.get(shared, subject = "alice") is None
assert monitor.get(shared, subject = "bob") is not None
def test_clear_leaves_a_running_shared_row_visible():
"""A load still in progress is live state, not history, so clearing the log
must not hide the row that shows it."""
monitor = ApiMonitor(max_entries = 10)
running = monitor.record_lifecycle(event = "load", model = "org/A", running = True)
monitor.clear(subject = "alice")
assert {e["id"] for e in monitor.snapshot(subject = "alice")} == {running}
def test_hidden_shared_ids_do_not_outlive_their_entries():
"""The hidden set names rows that exist, so it stays bounded by the ring
buffer instead of growing for the life of the process."""
monitor = ApiMonitor(max_entries = 2)
monitor.record_lifecycle(event = "unload", model = "org/A")
monitor.clear(subject = "alice")
assert monitor._hidden_shared.get("alice")
for i in range(5):
monitor.record_lifecycle(event = "unload", model = f"org/M{i}")
assert not monitor._hidden_shared.get("alice")