Update docs and tests

Author: superstar54

docs/gallery/autogen/pyfunction.py

@@ -93,7 +93,7 @@ def generate_structures(element: str, factors: list) -> dict:
 
 from aiida.engine import submit
 import datetime
-from aiida_pythonjob import prepare_pyfunction_inputs
+from aiida_pythonjob import prepare_pyfunction_inputs, PyFunction
 
 
 @pyfunction()
@@ -111,39 +111,64 @@ async def add_async(x, y, time: float):
     function_inputs={"x": 2, "y": 3, "time": 2.0},
 )
 
-node = submit(add_async, **inputs)
+node = submit(PyFunction, **inputs)
 
-# %%
-# Here is an example to monitor external events or conditions without blocking.
+
+# %%#
+# Killing an async process
+# ------------------------
+# Since async functions run as regular AiiDA processes, they can be controlled and killed
+# programmatically. This is useful for managing long-running or stuck tasks.
+# You can kill a running async function using the AiiDA command line interface.
+#
+# .. code-block:: bash
+#
+#    $ verdi process kill <pk>
+#
+# Monitor external events
+# ------------------------
+#
+# Async functions are particularly useful for monitoring external events or conditions without blocking the AiiDA daemon.
 # Here is an example that waits until a specified time.
 #
 
 
-@pyfunction()
-async def monitor_time(time: datetime.datetime):
+async def monitor_time(time: datetime.datetime, interval: float = 0.5, timeout: float = 60.0):
+    """Monitor the current time until it reaches the specified target time."""
     import asyncio
 
-    # monitor until the specified time
+    start_time = datetime.datetime.now()
     while datetime.datetime.now() < time:
         print("Waiting...")
-        await asyncio.sleep(0.5)
+        await asyncio.sleep(interval)
+        if (datetime.datetime.now() - start_time).total_seconds() > timeout:
+            raise TimeoutError("Monitoring timed out.")
 
 
 inputs = prepare_pyfunction_inputs(
     monitor_time,
-    function_inputs={"time": datetime.datetime.now() + datetime.timedelta(seconds=5)},
+    function_inputs={"time": datetime.datetime.now() + datetime.timedelta(seconds=5), "interval": 1.0},
 )
 
-node = submit(monitor_time, **inputs)
+node = submit(PyFunction, **inputs)
 
-# %%#
-# Killing an async process
-# ------------------------
-# Since async functions run as regular AiiDA processes, they can be controlled and killed
-# programmatically. This is useful for managing long-running or stuck tasks.
-# You can kill a running async function using the AiiDA command line interface.
-#
-# .. code-block:: bash
-#
-#    $ verdi process kill <pk>
-#
+# %%
+# For user's convenience, we provide a dedicated ``MonitorFunction`` class that inherits from ``PyFunction``.
+# User only need to write normal function, which returns True when the monitoring condition is met.
+
+from aiida_pythonjob import MonitorPyFunction
+
+
+def monitor_time(time: datetime.datetime):
+    # return True when the current time is greater than the target time
+    return datetime.datetime.now() > time
+
+
+inputs = prepare_pyfunction_inputs(
+    monitor_time,
+    function_inputs={"time": datetime.datetime.now() + datetime.timedelta(seconds=5)},
+    interval=1.0,
+    timeout=20.0,
+)
+
+node = submit(MonitorPyFunction, **inputs)

tests/test_monitor.py

@@ -16,7 +16,6 @@ def test_async_function_runs_and_returns_result():
     )
     result, node = run_get_node(MonitorPyFunction, **inputs)
     assert node.is_finished_ok
-    assert "result" in result
     # The actual monitor function returns None
     assert result["result"].value is None