forked from Github/Axter-Stash
423 lines
21 KiB
Python
423 lines
21 KiB
Python
# Description: This is a Stash plugin which updates Stash if any changes occurs in the Stash library paths.
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# By David Maisonave (aka Axter) Jul-2024 (https://www.axter.com/)
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# Get the latest developers version from following link: https://github.com/David-Maisonave/Axter-Stash/tree/main/plugins/FileMonitor
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# Note: To call this script outside of Stash, pass --url and the Stash URL.
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# Example: python filemonitor.py --url http://localhost:9999
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import os, sys, time, pathlib, argparse
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from StashPluginHelper import StashPluginHelper
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import watchdog # pip install watchdog # https://pythonhosted.org/watchdog/
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from watchdog.observers import Observer # This is also needed for event attributes
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from threading import Lock, Condition
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from multiprocessing import shared_memory
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from filemonitor_config import config # Import settings from filemonitor_config.py
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CONTINUE_RUNNING_SIG = 99
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STOP_RUNNING_SIG = 32
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parser = argparse.ArgumentParser()
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parser.add_argument('--url', '-u', dest='stash_url', type=str, help='Add Stash URL')
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parser.add_argument('--trace', '-t', dest='trace', action='store_true', help='Enables debug trace mode.')
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parser.add_argument('--stop', '-s', dest='stop', action='store_true', help='Stop (kill) a running FileMonitor task.')
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parser.add_argument('--restart', '-r', dest='restart', action='store_true', help='Restart FileMonitor.')
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parser.add_argument('--silent', '--quit', '-q', dest='quit', action='store_true', help='Run in silent mode. No output to console or stderr. Use this when running from pythonw.exe')
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parse_args = parser.parse_args()
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logToErrSet = 0
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logToNormSet = 0
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if parse_args.quit:
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logToErrSet = 1
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logToNormSet = 1
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settings = {
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"recursiveDisabled": False,
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"turnOnScheduler": False,
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"zzdebugTracing": False,
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"zzdryRun": False,
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}
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plugin = StashPluginHelper(
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stash_url=parse_args.stash_url,
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debugTracing=parse_args.trace,
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settings=settings,
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config=config,
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logToErrSet=logToErrSet,
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logToNormSet=logToNormSet
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)
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plugin.Status()
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plugin.Log(f"\nStarting (__file__={__file__}) (plugin.CALLED_AS_STASH_PLUGIN={plugin.CALLED_AS_STASH_PLUGIN}) (plugin.DEBUG_TRACING={plugin.DEBUG_TRACING}) (plugin.DRY_RUN={plugin.DRY_RUN}) (plugin.PLUGIN_TASK_NAME={plugin.PLUGIN_TASK_NAME})************************************************")
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exitMsg = "Change success!!"
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mutex = Lock()
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signal = Condition(mutex)
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shouldUpdate = False
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TargetPaths = []
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SHAREDMEMORY_NAME = "DavidMaisonaveAxter_FileMonitor"
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RECURSIVE = plugin.pluginSettings["recursiveDisabled"] == False
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SCAN_MODIFIED = plugin.pluginConfig["scanModified"]
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RUN_CLEAN_AFTER_DELETE = plugin.pluginConfig["runCleanAfterDelete"]
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RUN_GENERATE_CONTENT = plugin.pluginConfig['runGenerateContent']
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SCAN_ON_ANY_EVENT = plugin.pluginConfig['onAnyEvent']
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SIGNAL_TIMEOUT = plugin.pluginConfig['timeOut']
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CREATE_SPECIAL_FILE_TO_EXIT = plugin.pluginConfig['createSpecFileToExit']
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DELETE_SPECIAL_FILE_ON_STOP = plugin.pluginConfig['deleteSpecFileInStop']
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SPECIAL_FILE_DIR = f"{plugin.LOG_FILE_DIR}{os.sep}working"
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if CREATE_SPECIAL_FILE_TO_EXIT and not os.path.exists(SPECIAL_FILE_DIR):
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os.makedirs(SPECIAL_FILE_DIR)
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# Unique name to trigger shutting down FileMonitor
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SPECIAL_FILE_NAME = f"{SPECIAL_FILE_DIR}{os.sep}trigger_to_kill_filemonitor_by_david_maisonave.txt"
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if CREATE_SPECIAL_FILE_TO_EXIT and os.path.isfile(SPECIAL_FILE_NAME):
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os.remove(SPECIAL_FILE_NAME)
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STASHPATHSCONFIG = plugin.STASH_CONFIGURATION['stashes']
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stashPaths = []
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for item in STASHPATHSCONFIG:
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stashPaths.append(item["path"])
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plugin.Trace(f"(stashPaths={stashPaths})")
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if plugin.DRY_RUN:
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plugin.Log("Dry run mode is enabled.")
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plugin.Trace(f"(SCAN_MODIFIED={SCAN_MODIFIED}) (SCAN_ON_ANY_EVENT={SCAN_ON_ANY_EVENT}) (RECURSIVE={RECURSIVE})")
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StartFileMonitorAsAPluginTaskName = "Run as a Plugin"
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StartFileMonitorAsAServiceTaskName = "Start Library Monitor Service"
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FileMonitorPluginIsOnTaskQue = plugin.CALLED_AS_STASH_PLUGIN
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StopLibraryMonitorWaitingInTaskQueue = False
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JobIdInTheQue = 0
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def isJobWaitingToRun():
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global StopLibraryMonitorWaitingInTaskQueue
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global JobIdInTheQue
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global FileMonitorPluginIsOnTaskQue
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FileMonitorPluginIsOnTaskQue = False
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jobIsWaiting = False
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taskQue = plugin.STASH_INTERFACE.job_queue()
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for jobDetails in taskQue:
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plugin.Trace(f"(Job ID({jobDetails['id']})={jobDetails})")
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if jobDetails['status'] == "READY":
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if jobDetails['description'] == "Running plugin task: Stop Library Monitor":
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StopLibraryMonitorWaitingInTaskQueue = True
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JobIdInTheQue = jobDetails['id']
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jobIsWaiting = True
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elif jobDetails['status'] == "RUNNING" and jobDetails['description'].find(StartFileMonitorAsAPluginTaskName) > -1:
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FileMonitorPluginIsOnTaskQue = True
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JobIdInTheQue = 0
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return jobIsWaiting
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if plugin.CALLED_AS_STASH_PLUGIN:
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plugin.Trace(f"isJobWaitingToRun() = {isJobWaitingToRun()})")
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def trimDbFiles(dbPath, maxFiles):
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if not os.path.exists(dbPath) or len(dbPath) < 5: # For safety and security, short path not supported.
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return
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dbFiles = sorted(os.listdir(dbPath))
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n = len(dbFiles)
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for i in range(0, n-maxFiles):
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dbFilePath = f"{dbPath}{os.sep}{dbFiles[i]}"
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plugin.Log(f"Removing file {dbFilePath}")
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os.remove(dbFilePath)
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# Reoccurring scheduler code
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# ToDo: Change the following functions into a class called reoccurringScheduler
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def runTask(task):
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import datetime
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plugin.Trace(f"Running task {task}")
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if 'monthly' in task:
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dayOfTheMonth = datetime.datetime.today().day
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FirstAllowedDate = ((task['monthly'] - 1) * 7) + 1
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LastAllowedDate = task['monthly'] * 7
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if dayOfTheMonth < FirstAllowedDate or dayOfTheMonth > LastAllowedDate:
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plugin.Log(f"Skipping task {task['task']} because today is not the right {task['weekday']} of the month. Target range is between {FirstAllowedDate} and {LastAllowedDate}.")
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return
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if task['task'] == "Clean":
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plugin.STASH_INTERFACE.metadata_clean(paths=stashPaths, dry_run=plugin.DRY_RUN)
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elif task['task'] == "Generate":
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plugin.STASH_INTERFACE.metadata_generate()
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elif task['task'] == "Backup":
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plugin.LogOnce("Note: Backup task does not get listed in the Task Queue, but user can verify that it started by looking in the Stash log file as an INFO level log line.")
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plugin.STASH_INTERFACE.backup_database()
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if plugin.pluginConfig['BackupsMax'] > 0 and plugin.pluginConfig['BackupDatabasePath'] != "" and os.path.exists(plugin.pluginConfig['BackupDatabasePath']):
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plugin.Log("Checking quantity of DB backups.")
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trimDbFiles(plugin.pluginConfig['BackupDatabasePath'], plugin.pluginConfig['BackupsMax'])
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elif task['task'] == "Scan":
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plugin.STASH_INTERFACE.metadata_scan(paths=stashPaths)
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elif task['task'] == "Auto Tag":
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plugin.STASH_INTERFACE.metadata_autotag(paths=stashPaths, dry_run=plugin.DRY_RUN)
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elif task['task'] == "Optimise Database":
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plugin.STASH_INTERFACE.optimise_database()
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else:
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# ToDo: Add code to check if plugin is installed.
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plugin.Trace(f"Running plugin task pluginID={task['pluginId']}, task name = {task['task']}")
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plugin.STASH_INTERFACE.run_plugin_task(plugin_id=task['pluginId'], task_name=task['task'])
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def reoccurringScheduler():
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import schedule # pip install schedule # https://github.com/dbader/schedule
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# ToDo: Extend schedule class so it works persistently (remember schedule between restarts)
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# Or replace schedule with apscheduler https://github.com/agronholm/apscheduler
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dayOfTheWeek = ["monday", "tuesday", "wednesday", "thursday", "friday", "saturday", "sunday"]
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for task in plugin.pluginConfig['task_reoccurring_scheduler']:
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if 'hours' in task and task['hours'] > 0:
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plugin.Log(f"Adding to reoccurring scheduler task '{task['task']}' at {task['hours']} hours interval")
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schedule.every(task['hours']).hours.do(runTask, task)
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elif 'minutes' in task and task['minutes'] > 0:
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plugin.Log(f"Adding to reoccurring scheduler task '{task['task']}' at {task['minutes']} minutes interval")
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schedule.every(task['minutes']).minutes.do(runTask, task)
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elif 'days' in task and task['days'] > 0:
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plugin.Log(f"Adding to reoccurring scheduler task '{task['task']}' at {task['days']} days interval")
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schedule.every(task['days']).days.do(runTask, task)
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elif 'weekday' in task and task['weekday'].lower() in dayOfTheWeek and 'time' in task:
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if 'monthly' in task:
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plugin.Log(f"Adding to reoccurring scheduler task '{task['task']}' monthly on number {task['monthly']} {task['weekday']} at {task['time']}")
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else:
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plugin.Log(f"Adding to reoccurring scheduler task '{task['task']}' (weekly) every {task['weekday']} at {task['time']}")
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if task['weekday'].lower() == "monday":
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schedule.every().monday.at(task['time']).do(runTask, task)
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elif task['weekday'].lower() == "tuesday":
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schedule.every().tuesday.at(task['time']).do(runTask, task)
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elif task['weekday'].lower() == "wednesday":
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schedule.every().wednesday.at(task['time']).do(runTask, task)
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elif task['weekday'].lower() == "thursday":
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schedule.every().thursday.at(task['time']).do(runTask, task)
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elif task['weekday'].lower() == "friday":
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schedule.every().friday.at(task['time']).do(runTask, task)
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elif task['weekday'].lower() == "saturday":
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schedule.every().saturday.at(task['time']).do(runTask, task)
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elif task['weekday'].lower() == "sunday":
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schedule.every().sunday.at(task['time']).do(runTask, task)
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def checkSchedulePending():
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import schedule # pip install schedule # https://github.com/dbader/schedule
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schedule.run_pending()
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if plugin.pluginSettings['turnOnScheduler']:
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reoccurringScheduler()
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def start_library_monitor():
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global shouldUpdate
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global TargetPaths
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try:
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# Create shared memory buffer which can be used as singleton logic or to get a signal to quit task from external script
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shm_a = shared_memory.SharedMemory(name=SHAREDMEMORY_NAME, create=True, size=4)
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except:
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plugin.Error(f"Could not open shared memory map ({SHAREDMEMORY_NAME}). Change File Monitor must be running. Can not run multiple instance of Change File Monitor. Stop FileMonitor before trying to start it again.")
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return
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type(shm_a.buf)
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shm_buffer = shm_a.buf
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len(shm_buffer)
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shm_buffer[0] = CONTINUE_RUNNING_SIG
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plugin.Trace(f"Shared memory map opended, and flag set to {shm_buffer[0]}")
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RunCleanMetadata = False
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event_handler = watchdog.events.FileSystemEventHandler()
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def on_created(event):
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global shouldUpdate
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global TargetPaths
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TargetPaths.append(event.src_path)
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plugin.Log(f"CREATE *** '{event.src_path}'")
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with mutex:
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shouldUpdate = True
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signal.notify()
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def on_deleted(event):
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global shouldUpdate
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global TargetPaths
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nonlocal RunCleanMetadata
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TargetPaths.append(event.src_path)
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plugin.Log(f"DELETE *** '{event.src_path}'")
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with mutex:
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shouldUpdate = True
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RunCleanMetadata = True
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signal.notify()
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def on_modified(event):
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global shouldUpdate
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global TargetPaths
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if SCAN_MODIFIED:
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TargetPaths.append(event.src_path)
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plugin.Log(f"MODIFIED *** '{event.src_path}'")
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with mutex:
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shouldUpdate = True
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signal.notify()
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else:
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plugin.TraceOnce(f"Ignoring modifications due to plugin UI setting. path='{event.src_path}'")
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def on_moved(event):
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global shouldUpdate
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global TargetPaths
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TargetPaths.append(event.src_path)
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TargetPaths.append(event.dest_path)
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plugin.Log(f"MOVE *** from '{event.src_path}' to '{event.dest_path}'")
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with mutex:
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shouldUpdate = True
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signal.notify()
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def on_any_event(event):
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global shouldUpdate
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global TargetPaths
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if SCAN_ON_ANY_EVENT or event.src_path == SPECIAL_FILE_DIR:
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plugin.Log(f"Any-Event *** '{event.src_path}'")
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TargetPaths.append(event.src_path)
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with mutex:
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shouldUpdate = True
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signal.notify()
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else:
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plugin.TraceOnce("Ignoring on_any_event trigger.")
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event_handler.on_created = on_created
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event_handler.on_deleted = on_deleted
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event_handler.on_modified = on_modified
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event_handler.on_moved = on_moved
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event_handler.on_any_event = on_any_event
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observer = Observer()
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# Iterate through stashPaths
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for path in stashPaths:
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observer.schedule(event_handler, path, recursive=RECURSIVE)
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plugin.Log(f"Observing {path}")
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observer.schedule(event_handler, SPECIAL_FILE_DIR, recursive=RECURSIVE)
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plugin.Trace(f"Observing FileMonitor path {SPECIAL_FILE_DIR}")
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observer.start()
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JobIsRunning = False
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PutPluginBackOnTaskQueAndExit = False
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plugin.Trace("Starting loop")
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try:
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while True:
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TmpTargetPaths = []
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with mutex:
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while not shouldUpdate:
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plugin.Trace("While not shouldUpdate")
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if plugin.CALLED_AS_STASH_PLUGIN and isJobWaitingToRun():
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if FileMonitorPluginIsOnTaskQue:
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plugin.Log(f"Another task (JobID={JobIdInTheQue}) is waiting on the queue. Will restart FileMonitor to allow other task to run.")
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JobIsRunning = True
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break
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else:
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plugin.Warn("Not restarting because FileMonitor is no longer on Task Queue")
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if shm_buffer[0] != CONTINUE_RUNNING_SIG:
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plugin.Log(f"Breaking out of loop. (shm_buffer[0]={shm_buffer[0]})")
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break
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if plugin.pluginSettings['turnOnScheduler']:
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checkSchedulePending()
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plugin.LogOnce("Waiting for a file change-trigger.")
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signal.wait(timeout=SIGNAL_TIMEOUT)
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if plugin.pluginSettings['turnOnScheduler'] and not shouldUpdate:
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plugin.Trace("Checking the scheduler.")
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elif shouldUpdate:
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plugin.Trace("File change trigger occurred.")
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else:
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plugin.Trace("Wait timeourt occurred.")
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shouldUpdate = False
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TmpTargetPaths = []
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for TargetPath in TargetPaths:
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TmpTargetPaths.append(os.path.dirname(TargetPath))
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plugin.Trace(f"Added Path {os.path.dirname(TargetPath)}")
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if TargetPath == SPECIAL_FILE_NAME:
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if os.path.isfile(SPECIAL_FILE_NAME):
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shm_buffer[0] = STOP_RUNNING_SIG
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plugin.Log(f"[SpFl]Detected trigger file to kill FileMonitor. {SPECIAL_FILE_NAME}", printTo = plugin.LOG_TO_FILE + plugin.LOG_TO_CONSOLE + plugin.LOG_TO_STASH)
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else:
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plugin.Trace(f"[SpFl]Did not find file {SPECIAL_FILE_NAME}.")
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# Make sure special file does not exist, incase change was missed.
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if CREATE_SPECIAL_FILE_TO_EXIT and os.path.isfile(SPECIAL_FILE_NAME) and shm_buffer[0] == CONTINUE_RUNNING_SIG:
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shm_buffer[0] = STOP_RUNNING_SIG
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plugin.Log(f"[SpFl]Detected trigger file to kill FileMonitor. {SPECIAL_FILE_NAME}", printTo = plugin.LOG_TO_FILE + plugin.LOG_TO_CONSOLE + plugin.LOG_TO_STASH)
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TargetPaths = []
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TmpTargetPaths = list(set(TmpTargetPaths))
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if TmpTargetPaths != []:
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plugin.Log(f"Triggering Stash scan for path(s) {TmpTargetPaths}")
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if len(TmpTargetPaths) > 1 or TmpTargetPaths[0] != SPECIAL_FILE_DIR:
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if not plugin.DRY_RUN:
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plugin.STASH_INTERFACE.metadata_scan(paths=TmpTargetPaths)
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if RUN_CLEAN_AFTER_DELETE and RunCleanMetadata:
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plugin.STASH_INTERFACE.metadata_clean(paths=TmpTargetPaths, dry_run=plugin.DRY_RUN)
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if RUN_GENERATE_CONTENT:
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plugin.STASH_INTERFACE.metadata_generate()
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if plugin.CALLED_AS_STASH_PLUGIN and shm_buffer[0] == CONTINUE_RUNNING_SIG and FileMonitorPluginIsOnTaskQue:
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PutPluginBackOnTaskQueAndExit = True
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else:
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plugin.Trace("Nothing to scan.")
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if shm_buffer[0] != CONTINUE_RUNNING_SIG or StopLibraryMonitorWaitingInTaskQueue:
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plugin.Log(f"Exiting Change File Monitor. (shm_buffer[0]={shm_buffer[0]}) (StopLibraryMonitorWaitingInTaskQueue={StopLibraryMonitorWaitingInTaskQueue})")
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shm_a.close()
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shm_a.unlink() # Call unlink only once to release the shared memory
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raise KeyboardInterrupt
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elif JobIsRunning or PutPluginBackOnTaskQueAndExit:
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plugin.STASH_INTERFACE.run_plugin_task(plugin_id=plugin.PLUGIN_ID, task_name=StartFileMonitorAsAPluginTaskName)
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plugin.Trace(f"Exiting plugin so that other task can run. (JobIsRunning={JobIsRunning}) (PutPluginBackOnTaskQueAndExit={PutPluginBackOnTaskQueAndExit})")
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return
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except KeyboardInterrupt:
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observer.stop()
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plugin.Trace("Stopping observer")
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if os.path.isfile(SPECIAL_FILE_NAME):
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os.remove(SPECIAL_FILE_NAME)
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observer.join()
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plugin.Trace("Exiting function")
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# Example: python filemonitor.py --stop
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def stop_library_monitor():
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if CREATE_SPECIAL_FILE_TO_EXIT:
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if os.path.isfile(SPECIAL_FILE_NAME):
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os.remove(SPECIAL_FILE_NAME)
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pathlib.Path(SPECIAL_FILE_NAME).touch()
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if DELETE_SPECIAL_FILE_ON_STOP:
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os.remove(SPECIAL_FILE_NAME)
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plugin.Trace("Opening shared memory map.")
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try:
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shm_a = shared_memory.SharedMemory(name=SHAREDMEMORY_NAME, create=False, size=4)
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except:
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# If FileMonitor is running as plugin, then it's expected behavior that SharedMemory will not be avialable.
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plugin.Trace(f"Could not open shared memory map ({SHAREDMEMORY_NAME}). Change File Monitor must not be running.")
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return
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type(shm_a.buf)
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shm_buffer = shm_a.buf
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len(shm_buffer)
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shm_buffer[0] = STOP_RUNNING_SIG
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plugin.Trace(f"Shared memory map opended, and flag set to {shm_buffer[0]}")
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shm_a.close()
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shm_a.unlink() # Call unlink only once to release the shared memory
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def start_library_monitor_service():
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import subprocess
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import platform
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# First check if FileMonitor is already running
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try:
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shm_a = shared_memory.SharedMemory(name=SHAREDMEMORY_NAME, create=False, size=4)
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shm_a.close()
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shm_a.unlink()
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plugin.Error("FileMonitor is already running. Need to stop FileMonitor before trying to start it again.")
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return
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except:
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pass
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plugin.Trace("FileMonitor is not running, so safe to start it as a service.")
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is_windows = any(platform.win32_ver())
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PythonExe = f"{sys.executable}"
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# PythonExe = PythonExe.replace("python.exe", "pythonw.exe")
|
|
args = [f"{PythonExe}", f"{pathlib.Path(__file__).resolve().parent}{os.sep}filemonitor.py", '--url', f"{plugin.STASH_URL}"]
|
|
plugin.Trace(f"args={args}")
|
|
if is_windows:
|
|
plugin.Trace("Executing process using Windows DETACHED_PROCESS")
|
|
DETACHED_PROCESS = 0x00000008
|
|
pid = subprocess.Popen(args,creationflags=DETACHED_PROCESS, shell=True).pid
|
|
else:
|
|
plugin.Trace("Executing process using normal Popen")
|
|
pid = subprocess.Popen(args).pid
|
|
plugin.Trace(f"pid={pid}")
|
|
|
|
if parse_args.stop or parse_args.restart or plugin.PLUGIN_TASK_NAME == "stop_library_monitor":
|
|
stop_library_monitor()
|
|
if parse_args.restart:
|
|
time.sleep(5)
|
|
plugin.STASH_INTERFACE.run_plugin_task(plugin_id=plugin.PLUGIN_ID, task_name=StartFileMonitorAsAPluginTaskName)
|
|
plugin.Trace(f"Restart FileMonitor EXIT")
|
|
else:
|
|
plugin.Trace(f"Stop FileMonitor EXIT")
|
|
elif plugin.PLUGIN_TASK_NAME == "start_library_monitor_service":
|
|
start_library_monitor_service()
|
|
plugin.Trace(f"start_library_monitor_service EXIT")
|
|
elif plugin.PLUGIN_TASK_NAME == "start_library_monitor" or not plugin.CALLED_AS_STASH_PLUGIN:
|
|
start_library_monitor()
|
|
plugin.Trace(f"start_library_monitor EXIT")
|
|
else:
|
|
plugin.Log(f"Nothing to do!!! (plugin.PLUGIN_TASK_NAME={plugin.PLUGIN_TASK_NAME})")
|
|
|
|
plugin.Trace("\n*********************************\nEXITING ***********************\n*********************************")
|