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272 lines
8.6 KiB
272 lines
8.6 KiB
import os
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import time
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from datetime import datetime, timezone, timedelta
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import json
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import pprint
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import threading
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import traceback
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from mastodon import Mastodon, MastodonNotFoundError
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def log_print(source, text):
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prefix = "{}: ".format(source)
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text = (prefix + text.strip()).replace("\n", "\n" + prefix)
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print(text)
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def log_pprint(source, obj):
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log_print(source, pprint.pformat(obj))
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def encode_time(dt):
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return int(dt.strftime("%Y%m%d%H%M"))
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def decode_time(value):
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if len(value) == 12:
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return dt.strptime(str(value), "%Y%m%d%H%M")
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else:
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return dt.strptime(str(value), "%Y%m%d%H")
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class Instance:
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def __init__(self, name, config):
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self.name = name
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self.config = config
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self.base_url = "https://{}".format(name)
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self.client_file = "secret/{}.client".format(name)
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self.user_file = "secret/{}.user".format(name)
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self.state_file = "state/{}.state".format(name)
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self.state_lock = threading.Lock()
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self.spawner_thread = threading.Thread(
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target = self.spawner,
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name = self.name + " spawner",
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args = (),
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kwargs = {},
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daemon = True)
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self.tracker_thread = threading.Thread(
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target = self.tracker,
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name = self.name + " tracker",
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args = (),
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kwargs = {},
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daemon = True)
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self.purger_thread = threading.Thread(
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target = self.purger,
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name = self.name + " purger",
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args = (),
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kwargs = {},
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daemon = True)
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def setup(self):
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if not os.path.exists(self.client_file):
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Mastodon.create_app(
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'MastodonDeleter',
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api_base_url = self.base_url,
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to_file = self.client_file)
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if not os.path.exists(self.user_file):
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api = Mastodon(
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api_base_url = self.base_url,
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client_id = self.client_file)
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auth_url = api.auth_request_url()
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print("Go to:")
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print(auth_url)
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print()
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auth_code = input("Enter code: ")
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print()
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api.log_in(code = auth_code, to_file = self.user_file)
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def start(self):
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self.spawner_thread.start()
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def spawner(self):
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self.load_state()
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self.api = Mastodon(
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access_token = self.user_file,
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api_base_url = self.base_url)
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self.tracker_thread.start()
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self.purger_thread.start()
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while True:
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self.tracker_report()
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time.sleep(60)
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def tracker(self):
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my_id = self.api.me()["id"]
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while True:
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try:
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self.state_lock.acquire()
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self.state_lock.release()
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statuses = self.api.account_statuses(my_id, min_id = self.state["min_id"])
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while not statuses is None and len(statuses) > 0:
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log_print(self.name, "Found {} new status(es)".format(len(statuses)))
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for status in sorted(statuses,
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key = lambda status: status["created_at"]):
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self.track_status(status)
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self.state["min_id"] = status["id"]
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self.save_state()
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statuses = self.api.fetch_previous(statuses)
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# Rate limit (max 300 requests per 5 minutes, i.e. 1 per second)
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time.sleep(1)
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except:
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log_print(self.name, traceback.format_exc())
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time.sleep(60)
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def purger(self):
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while True:
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try:
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deleted = False
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timeslot_key, status_id = self.next_expired()
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if not timeslot_key is None:
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try:
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log_print(self.name, "Inspecting status {} in timeslot {}".format(status_id, timeslot_key))
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status = self.api.status(status_id)
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if status["favourited"]:
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log_print(self.name, "Keeping favourited status {} in timeslot {}".format(status_id, timeslot_key))
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else:
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log_print(self.name, "Deleting status {} in timeslot {}".format(status_id, timeslot_key))
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self.api.status_delete(status_id)
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deleted = True
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except MastodonNotFoundError:
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log_print(self.name,
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"Cannot find status {} on server".format(status_id))
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self.expire_status(timeslot_key, status_id)
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if deleted:
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time.sleep(60)
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else:
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time.sleep(1)
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except:
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log_print(self.name, traceback.format_exc())
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time.sleep(60)
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def load_state(self):
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self.state_lock.acquire()
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if not os.path.exists(self.state_file):
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self.state = dict(
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min_id = "0",
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timeslots = {})
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else:
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with open(self.state_file) as json_file:
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self.state = json.load(json_file)
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self.state["timeslots"] = dict(map(lambda kv: (int(kv[0]), set(kv[1])), self.state["timeslots"]))
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self.state_lock.release()
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def save_state(self):
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self.state_lock.acquire()
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json_state = self.state.copy()
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json_state["timeslots"] = list(map(lambda kv: [kv[0], list(kv[1])], json_state["timeslots"].items()))
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self.state_lock.release()
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with open(self.state_file, "w") as json_file:
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json.dump(json_state, json_file, indent = 4)
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def tracker_report(self):
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self.state_lock.acquire()
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total_timeslots = len(self.state["timeslots"])
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total_statuses = 0
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for timeslot_key, status_ids in self.state["timeslots"].items():
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total_statuses += len(status_ids)
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self.state_lock.release()
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log_print(self.name, "Tracking {} statuses across {} timeslots".format(
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total_statuses, total_timeslots))
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def track_status(self, status):
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status_id = str(status["id"])
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timeslot_key = encode_time(status["created_at"])
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self.state_lock.acquire()
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if status["reblog"] is None and not status["visibility"] is "direct":
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timeslots = self.state["timeslots"]
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if not timeslot_key in timeslots:
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timeslots[timeslot_key] = set()
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timeslots[timeslot_key].add(status_id)
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self.state_lock.release()
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def next_expired(self):
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now = datetime.now(timezone.utc)
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min_timeslot_key = encode_time(now - timedelta(minutes = self.config["max_age"]))
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self.state_lock.acquire()
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timeslot_key, status_ids = next(iter(self.state["timeslots"].items()), (None, None))
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if not timeslot_key is None and timeslot_key < min_timeslot_key:
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status_id = next(iter(status_ids), None)
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else:
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timeslot_key = None
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status_id = None
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self.state_lock.release()
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return (timeslot_key, status_id)
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def expire_status(self, timeslot_key, status_id):
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self.state_lock.acquire()
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timeslots = self.state["timeslots"]
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if timeslot_key in timeslots:
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if status_id in timeslots[timeslot_key]:
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log_print(self.name, "Expiring status {} from timeslot {}".format(status_id, timeslot_key))
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timeslots[timeslot_key].remove(status_id)
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else:
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log_print(self.name, "Cannot expire missing status {} from timeslot {}".format(
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status_id, timeslot_key))
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if len(timeslots[timeslot_key]) == 0:
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log_print(self.name, "Removing empty timeslot {}".format(timeslot_key))
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del timeslots[timeslot_key]
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else:
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log_print(self.name, "Cannot expire status {} from missing timeslot {}".format(
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status_id, timeslot_key))
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self.state_lock.release()
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self.save_state()
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with open("config.json") as json_file:
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config = json.load(json_file)
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instances = {}
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for name in config["instances"]:
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instances[name] = Instance(name = name, config = config)
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instances[name].setup()
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start_interval = 60.0 / len(config["instances"])
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for instance in instances.values():
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instance.start()
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time.sleep(start_interval)
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while True:
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time.sleep(1)
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