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import time
import orjson
from celery import shared_task
from django.db import transaction
from django.db.models import QuerySet
from typing import Dict, Type
from contextlib import contextmanager
import redis
from dataclasses import asdict

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class SyncedModelMixin(models.Model):
    last_sync_hashes = models.JSONField(default=dict)

def inside_task(instance):
    data = self.get_update_data(instance)
    rendered_data = self.render_data(data)
    current_hash = hash(rendered_data)
    syncer_name = self.__class__.__name__
    if current_hash != instance.last_sync_hashes.get(syncer_name):
        # Perform the actual update

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class PausedSyncIterator:
    def __init__(self, queryset: QuerySet):
        self.queryset = queryset
        self.iterator = iter(queryset)

    def __iter__(self):
        return self

    def __next__(self):
        try:

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class HTTPBaseTask(Task):

    def __init__(self):
        super().__init__()
        self.session = requests.Session()
        self.session.headers.update({'Authorization': 'Bearer your_token_here'})


class AttributeSyncer:
    model = None

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class AttributeSyncerTask(Task):
    
    def __init__(self):
        super().__init__()
        self.session = requests.Session()
        # Configure session as needed, e.g.:
        self.session.headers.update({'Authorization': 'Bearer your_token_here'})

    def run(self, instance_id):
        instance = self.get_instance(instance_id)

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class AttributeSyncer:
    @classmethod
    def process_update(cls, instance):
        if created:
            new_data = cls.get_update_data(instance)
            cls.send_update(instance, new_data)
        else:
            old_data = cls.get_update_data(instance, original=True)
            new_data = cls.get_update_data(instance)
            diff = jsondiff.diff(old_data, new_data)

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class SyncedModelMixin:
    last_synced_data = models.JSONField(null=True, blank=True)

class AttributeSyncer:
    model = None
    serializer_class = None

    @classmethod
    def process_update(cls, instance):
        new_data = cls.get_update_data(instance)

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class AttributeSyncer:
    queryset = None  # To be defined in subclasses


    @classmethod
    def should_sync(cls, instance):
        return cls.queryset.filter(pk=instance.pk).exists()

class CustomerAttributeSyncer(AttributeSyncer):
    queryset = Customer.objects.filter(is_active=True)

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from dataclasses import dataclass, field

@dataclass
class Customer:
    name: str
    email: str

@dataclass
class Address:
    street: str

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class AttributeSyncer:
    DEBOUNCE_DELAY = 60  # 60 seconds
    LOCK_TIMEOUT = 300  # 5 minutes

    @classmethod
    def schedule_debounced_update(cls, instance):
        model_name = instance.__class__.__name__
        instance_id = instance.id
        lock_key = f"{model_name}:{instance_id}:lock"