update_danbooru.py

import argparse
import queue
import threading
import time
from time import sleep

import requests
from rich.progress import (
    BarColumn,
    Progress,
    TextColumn,
    TimeElapsedColumn,
    TimeRemainingColumn,
)
from sqlalchemy import text

from db import get_engine, t_posts

url_queue = queue.Queue(maxsize=64)
data_queue = queue.Queue(maxsize=64)

parser = argparse.ArgumentParser()
parser.add_argument("--start_id", type=int, default=0)
parser.add_argument("--api_key", type=str)
parser.add_argument("--login", type=str)
parser.add_argument("--workers", type=int, default=16)
args = parser.parse_args()

API_KEY = args.api_key
LOGIN = args.login

base_api_url = (
    "https://danbooru.donmai.us/posts.json?page=a{}&limit=200&api_key={}&login={}"
)
latest_id_url = "https://danbooru.donmai.us/posts.json?api_key={}&login={}"

latest_id = 1  # latset id


# get latest ID
def fetch_latest_id(max_retries=5, backoff_factor=1):
    global latest_id
    attempt = 0

    while attempt < max_retries:
        try:
            response = requests.get(latest_id_url.format(API_KEY, LOGIN))
            if response.status_code == 200:
                data = response.json()
                if data and "id" in data[0]:
                    latest_id = data[0]["id"]
                    return  # 成功获取到ID后退出函数
            else:
                print(f"Failed to retrieve latest ID: {response.status_code}")
        except Exception as e:
            print(f"An error occurred while fetching the latest ID: {e}")

        attempt += 1
        sleep_time = backoff_factor * (2**attempt)
        print(f"Retrying in {sleep_time} seconds...")
        time.sleep(sleep_time)

    print(f"Failed to retrieve latest ID after {max_retries} attempts")


def update_latest_id():
    while True:
        fetch_latest_id()
        time.sleep(60)


def fetch_data(max_retries=3, retry_delay=2):
    while True:
        url = url_queue.get()  # get url from url_queue
        if url is None:
            break

        retry_count = 0
        while retry_count < max_retries:
            try:
                response = requests.get(url)
                if response.status_code == 200:
                    data = response.json()
                    data_queue.put(data)
                    break  # 成功的请求，无需重试，跳出重试循环
                else:
                    print(f"Failed to fetch data from {url}: {response.status_code}")
                    retry_count += 1
                    time.sleep(retry_delay)

            except Exception as e:
                retry_count += 1
                print(
                    f"An error occurred while fetching data from {url}: {e}. Retrying in {retry_delay} seconds..."
                )
                time.sleep(retry_delay)

        url_queue.task_done()


# create 16 threads to fetch data
threads = []
for _ in range(args.workers):
    thread = threading.Thread(target=fetch_data)
    thread.daemon = True
    thread.start()
    threads.append(thread)

# 启动线程来定期更新最新 ID
id_update_thread = threading.Thread(target=update_latest_id)
id_update_thread.daemon = True
id_update_thread.start()

required_columns = [col.name for col in t_posts.columns if not col.primary_key]

danbooru_engine = get_engine("danbooru_metadata.db")
t_posts.metadata.create_all(danbooru_engine)

# 获取数据库中最大的 ID
with danbooru_engine.connect() as conn:
    res = conn.execute(text("SELECT MAX(id) FROM posts"))
    latest_id = res.fetchone()[0] or 1
start_id = args.start_id if args.start_id != 0 else latest_id
print("start_id:", start_id)


def save_data():
    while True:
        data = data_queue.get()
        for column in required_columns:
            for d in data:
                if column not in d:
                    d[column] = None
        with danbooru_engine.connect() as conn:
            conn.execute(t_posts.insert().prefix_with("OR REPLACE"), data)
            conn.commit()


save_thread = threading.Thread(target=save_data)
save_thread.daemon = True
save_thread.start()


try:
    with Progress(
        TextColumn("[progress.description]{task.description}"),
        BarColumn(),
        TextColumn("[progress.percentage]{task.percentage:>3.0f}%"),
        TimeElapsedColumn(),
        TimeRemainingColumn(),
        TextColumn("[{task.completed} / {task.total}]"),
    ) as progress:
        # 添加一个任务，注意 total 参数设置为 latest_id
        task = progress.add_task(
            "Processing", start=True, total=latest_id - start_id + 1
        )
        current_id = start_id

        while True:
            if current_id >= latest_id:
                progress.update(task, completed=latest_id)  # 确保进度条满格
                sleep(2)
                continue

            url = base_api_url.format(current_id, API_KEY, LOGIN)
            url_queue.put(url)  # 将生成的 URL 放入 URL 队列
            current_id += 200
            progress.update(task, completed=current_id, total=latest_id)
            sleep(0.1)
except KeyboardInterrupt:
    print("Stopped by user")
    exit(0)