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Thomas Oettli
2020-11-03 12:59:42 +01:00
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@@ -19,13 +19,13 @@ This is a very simple example task that just logs the task_id and the event:
async def custom_task(event, task_id): async def custom_task(event, task_id):
logging.info(f"{task_id}: execute example task: {event}") logging.info(f"{task_id}: execute example task: {event}")
``` ```
This task can be directly bound to an event in an event map. Although this is the easiest and quickest way, it is usually better to use a scheduler to wrap the task. This task can be directly bound to an event in an event map. Although this is the easiest and quickest way, it is usually better to use a scheduler to schedule the task execution.
## Schedulers ## Schedulers
pyinotifyd has different schedulers to schedule tasks with an optional delay. The advantages of using a scheduler are consistent logging and the possibility to cancel delayed tasks. Furthermore, schedulers have the ability to differentiate between files and directories. pyinotifyd has different schedulers to schedule tasks with an optional delay. The advantages of using a scheduler are consistent logging and the possibility to cancel delayed tasks. Furthermore, schedulers have the ability to differentiate between files and directories.
### TaskScheduler ### TaskScheduler
Scheduler to schedule *task* with an optional *delay* in seconds. Use the *files* and *dirs* arguments to schedule tasks only for files and/or directories. TaskScheduler to schedule *task* with an optional *delay* in seconds. Use the *files* and *dirs* arguments to schedule tasks only for files and/or directories.
The *logname* argument is used to set a custom name for log messages. All arguments except for *task* are optional. The *logname* argument is used to set a custom name for log messages. All arguments except for *task* are optional.
```python ```python
s = TaskScheduler(task=custom_task, files=True, dirs=False, delay=0, logname="TaskScheduler") s = TaskScheduler(task=custom_task, files=True, dirs=False, delay=0, logname="TaskScheduler")
@@ -37,12 +37,12 @@ TaskScheduler provides two tasks which can be bound to an event in an event map.
Cancel a scheduled task. Cancel a scheduled task.
### ShellScheduler ### ShellScheduler
Scheduler to schedule Shell command *cmd*. The placeholders **{maskname}**, **{pathname}** and **{src_pathname}** are replaced with the actual values of the event. ShellScheduler has the same optional arguments as TaskScheduler and provides the same tasks. ShellScheduler to schedule Shell command *cmd*. The placeholders **{maskname}**, **{pathname}** and **{src_pathname}** are replaced with the actual values of the event. ShellScheduler has the same optional arguments as TaskScheduler and provides the same tasks.
```python ```python
s1 = ShellScheduler(cmd="/usr/local/bin/task.sh {maskname} {pathname} {src_pathname}") s1 = ShellScheduler(cmd="/usr/local/bin/task.sh {maskname} {pathname} {src_pathname}")
``` ```
## Event map ## Event maps
An event map is used to map event types to tasks. It is possible to set a list of tasks to run multiple tasks on a single event. If the task of an event type is set to None, it is ignored. Event maps are used to map event types to tasks. It is possible to set a list of tasks to run multiple tasks on a single event. If the task of an event type is set to None, it is ignored.
This is an example: This is an example:
```python ```python
event_map = EventMap({"IN_CLOSE_NOWRITE": [s.schedule, s1.schedule], event_map = EventMap({"IN_CLOSE_NOWRITE": [s.schedule, s1.schedule],
@@ -50,8 +50,7 @@ event_map = EventMap({"IN_CLOSE_NOWRITE": [s.schedule, s1.schedule],
``` ```
## Watches ## Watches
Watch *path* for event types in *event_map* and execute the corresponding task(s). If *rec* is True, a watch will be added on each subdirectory in *path*. If *auto_add* is True, a watch will be added automatically on newly created subdirectories in *path*. Watches *path* for event types in *event_map* and execute the corresponding task(s). If *rec* is True, a watch will be added on each subdirectory in *path*. If *auto_add* is True, a watch will be added automatically on newly created subdirectories in *path*.
```python ```python
watch = Watch(path="/tmp", event_map=event_map, rec=False, auto_add=False) watch = Watch(path="/tmp", event_map=event_map, rec=False, auto_add=False)
``` ```