fix TaskState class

README.md

@@ -1,6 +1,9 @@
 # pyinotifyd
-A daemon to monitor filesystems events with inotify on Linux and run tasks like filesystem operations (copy, move or delete), a shell commands or custom async python methods.  
-It is possible to schedule tasks with a delay, delayed tasks can be cancelled again in case a certain event occurs. A useful example would be to run tasks only if a file has not changed within a certain amount of time.
+A daemon to monitor filesystems events with inotify on Linux and run tasks like filesystem operations (copy, move or delete), a shell command or custom async python methods.  
+
+It is possible to schedule tasks with a delay, which can then be canceled again in case a canceling event occurs. A useful example for this is to run tasks only if a file has not changed within a certain amount of time.  
+
+pyinotifyd offers great flexibility through its dev-op configuration approach, which enables you to do almost anything you want.
 
 # Requirements
 * [pyinotify](https://github.com/seb-m/pyinotify)
@@ -70,7 +73,8 @@ task_sched = TaskScheduler(
 ### ShellScheduler
 Schedule a shell command *cmd*. Replace  **{maskname}**, **{pathname}** and **{src_pathname}** in *cmd* with the actual values of occuring events. This scheduler is based on TaskScheduler and has the same optional arguments.
 ```python
-# Please note that **{src_pathname}** is only present for IN_MOVED_TO events and only in the case where the IN_MOVED_FROM events are watched too.
+# Please note that **{src_pathname}** is only present for IN_MOVED_TO events and only
+# in the case where the IN_MOVED_FROM events are watched too.
 # If it is not present, the command line argument will be an empty string.
 shell_sched = ShellScheduler(
     cmd="/usr/local/bin/task.sh {maskname} {pathname} {src_pathname}")
@@ -126,7 +130,7 @@ event_map = {
     "IN_Q_OVERFLOW": None,
     "IN_UNMOUNT": Cancel(task_sched)}
 
-# It is possible to instantiate an event map with a default scheduler set for every event,
+# It is possible to instantiate an event map with a default scheduler set for every event
 event_map = EventMap(default_sched=task_sched)
 ```
 The following events are available:
@@ -186,16 +190,16 @@ The following loglevels are available:
 ```python
 # Configure global loglevel
 setLoglevel(INFO)
-```
-Configure loglevel per *logname*.
-```python
+
+# Configure loglevel per logname.
 setLoglevel(INFO, logname="daemon")
 ```
 
 ### Syslog
 Send log messages to the local syslog server.
 ```python
-# Enable logging to local syslog server (/dev/log). Use *address* to specify a different target.
+# Enable logging to local syslog server (/dev/log).
+# Use *address* to specify a different target.
 enableSyslog(loglevel=INFO, address="/dev/log")
 
 # Enable syslog per logname

pyinotifyd/__init__.py

@@ -15,7 +15,9 @@
 #
 
 __all__ = [
-    "EventMap"
+    "setLoglevel",
+    "enableSyslog",
+    "EventMap",
     "Watch",
     "Pyinotifyd",
     "DaemonInstance",
@@ -34,7 +36,7 @@ from pyinotify import ProcessEvent
 from pyinotifyd._install import install, uninstall
 from pyinotifyd.scheduler import TaskScheduler, Cancel
 
-__version__ = "0.0.3"
+__version__ = "0.0.5"
 
 
 def setLoglevel(loglevel, logname=None):
@@ -434,15 +436,14 @@ def main():
     ch.setFormatter(formatter)
 
     loop = asyncio.get_event_loop()
-    for signame in ["SIGINT", "SIGTERM"]:
-        loop.add_signal_handler(
-            getattr(signal, signame),
-            lambda: loop.create_task(
-                daemon.shutdown(signame)))
-
     loop.add_signal_handler(
-        getattr(signal, "SIGHUP"),
-        lambda: loop.create_task(
+        signal.SIGTERM, lambda: loop.create_task(
+            daemon.shutdown("SIGTERM")))
+    loop.add_signal_handler(
+        signal.SIGINT, lambda: loop.create_task(
+            daemon.shutdown("SIGINT")))
+    loop.add_signal_handler(
+        signal.SIGHUP, lambda: loop.create_task(
             daemon.reload("SIGHUP", args.config, args.debug)))
 
     daemon.start()

pyinotifyd/_install.py

@@ -14,15 +14,96 @@
 # along with pyinotifyd.  If not, see <http://www.gnu.org/licenses/>.
 #
 
+import filecmp
 import logging
 import os
 import shutil
 import sys
 
+
 SYSTEMD_PATH = "/lib/systemd/system"
 OPENRC = "/sbin/openrc"
 
 
+def _systemd_files(pkg_dir, name):
+    return [
+        (f"{pkg_dir}/misc/systemd/{name}.service",
+            f"{SYSTEMD_PATH}/{name}.service", True)]
+
+
+def _openrc_files(pkg_dir, name):
+    return [
+        (f"{pkg_dir}/misc/openrc/{name}.initd", f"/etc/init.d/{name}", True),
+        (f"{pkg_dir}/misc/openrc/{name}.confd", f"/etc/conf.d/{name}", False)]
+
+
+def _config_files(pkg_dir, name):
+    return [
+        (f"{pkg_dir}/misc/config.py.default", f"/etc/{name}/config.py", False)]
+
+
+def _install_files(files):
+    for src, dst, force in files:
+        if os.path.exists(dst):
+            if os.path.isdir(dst):
+                logging.error(
+                    " => unable to copy file, destination path is a directory")
+                continue
+            elif not force:
+                logging.info(f" => file {dst} already exists")
+                continue
+
+        try:
+            logging.info(f" => install file {dst}")
+            shutil.copy2(src, dst)
+        except Exception as e:
+            logging.error(f" => unable to install file {dst}: {e}")
+
+
+def _uninstall_files(files):
+    for src, dst, force in files:
+        if not os.path.isfile(dst):
+            continue
+
+        if not force and not filecmp.cmp(src, dst, shallow=True):
+            logging.warning(
+                f" => keep modified file {dst}, "
+                f"you have to remove it manually")
+            continue
+
+        try:
+            logging.info(f" => uninstall file {dst}")
+            os.remove(dst)
+        except Exception as e:
+            logging.error(f" => unable to uninstall file {dst}: {e}")
+
+
+def _create_dir(path):
+    if os.path.isdir(path):
+        logging.info(f" => directory {path} already exists")
+    else:
+        try:
+            logging.info(f" => create directory {path}")
+            os.mkdir(path)
+        except Exception as e:
+            logging.error(f" => unable to create directory {path}: {e}")
+            return False
+
+    return True
+
+
+def _delete_dir(path):
+    if os.path.isdir(path):
+        if not os.listdir(path):
+            try:
+                logging.info(f" => delete directory {path}")
+                os.rmdir(path)
+            except Exception as e:
+                logging.error(f" => unable to delete directory {path}: {e}")
+        else:
+            logging.warning(f" => keep non-empty directory {path}")
+
+
 def _check_root():
     if os.getuid() != 0:
         logging.error("you need to have root privileges, please try again")
@@ -47,37 +128,6 @@ def _check_openrc():
     return openrc
 
 
-def _copy_missing_file(src, dst):
-    if os.path.exists(dst):
-        logging.info(f" => file {dst} already installed")
-    else:
-        try:
-            logging.info(f" => install file {dst}")
-            shutil.copy2(src, dst)
-        except Exception as e:
-            logging.error(f" => unable to install file {dst}: {e}")
-
-
-def _delete_present_file(f):
-    if os.path.isfile(f):
-        try:
-            logging.info(f" => uninstall file {f}")
-            os.remove(f)
-        except Exception as e:
-            logging.error(f" => unable to uninstall file {f}: {e}")
-
-
-def _warn_exists(path):
-    if os.path.isdir(path):
-        logging.warning(
-            f" => directory {path} is still present, "
-            f"you have to remove it manually")
-    else:
-        logging.warning(
-            f" => file {path} is still present, "
-            f"you have to remove it manually")
-
-
 def install(name):
     if not _check_root():
         sys.exit(2)
@@ -85,33 +135,16 @@ def install(name):
     pkg_dir = os.path.dirname(__file__)
 
     if _check_systemd():
-        dst = f"{SYSTEMD_PATH}/{name}.service"
-        src = f"{pkg_dir}/misc/systemd/{name}.service"
-        _copy_missing_file(src, dst)
+        _install_files(_systemd_files(pkg_dir, name))
 
     if _check_openrc():
-        files = [
-            (f"{pkg_dir}/misc/openrc/{name}.initd", f"/etc/init.d/{name}"),
-            (f"{pkg_dir}/misc/openrc/{name}.confd", f"/etc/conf.d/{name}")]
-        for src, dst in files:
-            _copy_missing_file(src, dst)
+        _install_files(_openrc_files(pkg_dir, name))
 
-    logging.info("install configuration file")
-    config_dir = f"/etc/{name}"
-    if os.path.isdir(config_dir):
-        logging.info(f" => directory {config_dir} already exists")
-    else:
-        try:
-            logging.info(f" => create directory {config_dir}")
-            os.mkdir(config_dir)
-        except Exception as e:
-            logging.error(f" => unable to create directory {config_dir}: {e}")
-            sys.exit(3)
+    if not _create_dir(f"/etc/{name}"):
+        logging.error(" => unable to create config dir, giving up ...")
+        sys.exit(3)
 
-    files = [
-        (f"{pkg_dir}/misc/config.py.default", f"{config_dir}/config.py")]
-    for src, dst in files:
-        _copy_missing_file(src, dst)
+    _install_files(_config_files(pkg_dir, name))
 
     logging.info(f"{name} successfully installed")
 
@@ -120,13 +153,12 @@ def uninstall(name):
     if not _check_root():
         sys.exit(2)
 
-    if _check_systemd():
-        _delete_present_file(f"{SYSTEMD_PATH}/{name}.service")
+    pkg_dir = os.path.dirname(__file__)
 
-    if _check_openrc():
-        _delete_present_file(f"/etc/init.d/{name}")
-        _warn_exists(f"/etc/conf.d/{name}")
+    _uninstall_files(_systemd_files(pkg_dir, name))
+    _uninstall_files(_openrc_files(pkg_dir, name))
+    _uninstall_files(_config_files(pkg_dir, name))
 
-    _warn_exists(f"/etc/{name}")
+    _delete_dir(f"/etc/{name}")
 
     logging.info(f"{name} successfully uninstalled")

pyinotifyd/scheduler.py

@@ -25,7 +25,6 @@ import os
 import re
 import shutil
 
-from dataclasses import dataclass
 from inspect import iscoroutinefunction
 from shlex import quote as shell_quote
 from uuid import uuid4
@@ -46,11 +45,11 @@ class SchedulerLogger(logging.LoggerAdapter):
 
 class TaskScheduler:
 
-    @dataclass
     class TaskState:
-        id: str = str(uuid4())
-        task: asyncio.Task = None
-        cancelable: bool = True
+        def __init__(self, id=None, task=None, cancelable=True):
+            self.id = id or str(uuid4())
+            self.task = task
+            self.cancelable = cancelable
 
     def __init__(self, job, files=True, dirs=False, delay=0, logname="sched",
                  loop=None):

setup.py

@@ -18,7 +18,7 @@ setup(name = "pyinotifyd",
         #   3 - Alpha
         #   4 - Beta
         #   5 - Production/Stable
-        "Development Status :: 3 - Alpha",
+        "Development Status :: 4 - Beta",
         "License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)",
         "Operating System :: OS Independent",
         "Programming Language :: Python",