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from typing import cast
import os
import time
import unittest
import json
from femtoqueue import FemtoQueue, FemtoTask
from tempfile import mkdtemp
class TestFemtoQueue(unittest.TestCase):
def test_basic(self):
dir = mkdtemp()
q = FemtoQueue(data_dir = dir, node_name = "node1")
# Add a JSON task
some_data = json.dumps({ "foo": "bar" })
q.push(some_data.encode("utf-8"))
# The task should be in the queue with the correct payload
task = q.pop()
self.assertIsNotNone(task)
task = cast(FemtoTask, task)
parsed_data = json.loads(task.data.decode("utf-8"))
self.assertEqual(parsed_data["foo"], "bar")
# Mark the task as done
q.done(task)
# There should be no tasks available
task = q.pop()
self.assertIsNone(task)
def test_aborted(self):
dir = mkdtemp()
q = FemtoQueue(data_dir = dir, node_name = "node1")
# Add a JSON task
some_data = json.dumps({ "foo": "bar" })
q.push(some_data.encode("utf-8"))
# The task should be in the queue with the correct payload
task = q.pop()
self.assertIsNotNone(task)
task = cast(FemtoTask, task)
parsed_data = json.loads(task.data.decode("utf-8"))
self.assertEqual(parsed_data["foo"], "bar")
# Simulate a fault and start over
q = FemtoQueue(data_dir = dir, node_name = "node1")
# The task should still be assigned to this node
task = q.pop()
self.assertIsNotNone(task)
task = cast(FemtoTask, task)
parsed_data = json.loads(task.data.decode("utf-8"))
self.assertEqual(parsed_data["foo"], "bar")
# Mark the task as done
q.done(task)
# There should be no tasks available
task = q.pop()
self.assertIsNone(task)
def test_release_stale_tasks(self):
dir = mkdtemp()
# Node1 creates and claims the task
q1 = FemtoQueue(data_dir=dir, node_name="node1", timeout_stale_ms=100)
q1.push(b"stuck")
task = q1.pop()
self.assertIsNotNone(task)
task = cast(FemtoTask, task)
# Simulate the task becoming stale by changing mtime
task_path = os.path.join(dir, "node1", task.id)
old_time = time.time() - 9999
os.utime(task_path, (old_time, old_time))
# Now node2 should see the task as stale and reclaim it
q2 = FemtoQueue(data_dir=dir, node_name="node2", timeout_stale_ms=100)
revived_task = q2.pop()
self.assertIsNotNone(revived_task)
revived_task = cast(FemtoTask, revived_task)
self.assertEqual(revived_task.data, b"stuck")
self.assertEqual(revived_task.id, task.id)
def test_mark_task_failed(self):
dir = mkdtemp()
q = FemtoQueue(data_dir=dir, node_name="node1")
# Push and pop a task
q.push(b"will fail")
task = q.pop()
self.assertIsNotNone(task)
task = cast(FemtoTask, task)
# Mark the task as failed
q.fail(task)
# Ensure the file now exists in the failed directory
failed_path = os.path.join(dir, "failed", task.id)
self.assertTrue(os.path.exists(failed_path))
# The task should not reappear in pop
self.assertIsNone(q.pop())
def test_mark_task_done(self):
dir = mkdtemp()
q = FemtoQueue(data_dir=dir, node_name="node1")
# Push and pop a task
q.push(b"complete me")
task = q.pop()
self.assertIsNotNone(task)
task = cast(FemtoTask, task)
# Mark the task as done
q.done(task)
# Ensure the file is now in the 'done' directory
done_path = os.path.join(dir, "done", task.id)
self.assertTrue(os.path.exists(done_path))
# The task should not be returned again
self.assertIsNone(q.pop())
if __name__ == '__main__':
unittest.main()
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