Media_RPA/media_platform/douyin/core.py

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2024-07-15 08:33:05 +00:00
import asyncio
import os
import random
from asyncio import Task
from typing import Any, Dict, List, Optional, Tuple
from playwright.async_api import (BrowserContext, BrowserType, Page,
async_playwright)
import config
from base.base_crawler import AbstractCrawler
from proxy.proxy_ip_pool import IpInfoModel, create_ip_pool
from store import douyin as douyin_store
from tools import utils
from var import crawler_type_var
from .client import DOUYINClient
from .exception import DataFetchError
from .field import PublishTimeType
from .login import DouYinLogin
class DouYinCrawler(AbstractCrawler):
context_page: Page
dy_client: DOUYINClient
browser_context: BrowserContext
def __init__(self) -> None:
self.user_agent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36" # fixed
self.index_url = "https://www.douyin.com"
async def start(self) -> None:
playwright_proxy_format, httpx_proxy_format = None, None
if config.ENABLE_IP_PROXY:
ip_proxy_pool = await create_ip_pool(config.IP_PROXY_POOL_COUNT, enable_validate_ip=True)
ip_proxy_info: IpInfoModel = await ip_proxy_pool.get_proxy()
playwright_proxy_format, httpx_proxy_format = self.format_proxy_info(ip_proxy_info)
async with async_playwright() as playwright:
# Launch a browser context.
chromium = playwright.chromium
self.browser_context = await self.launch_browser(
chromium,
None,
self.user_agent,
headless=config.HEADLESS
)
# stealth.min.js is a js script to prevent the website from detecting the crawler.
await self.browser_context.add_init_script(path="libs/stealth.min.js")
self.context_page = await self.browser_context.new_page()
await self.context_page.goto(self.index_url)
self.dy_client = await self.create_douyin_client(httpx_proxy_format)
if not await self.dy_client.pong(browser_context=self.browser_context):
login_obj = DouYinLogin(
login_type=config.LOGIN_TYPE,
login_phone="", # you phone number
browser_context=self.browser_context,
context_page=self.context_page,
cookie_str=config.COOKIES
)
await login_obj.begin()
await self.dy_client.update_cookies(browser_context=self.browser_context)
crawler_type_var.set(config.CRAWLER_TYPE)
if config.CRAWLER_TYPE == "search":
# Search for notes and retrieve their comment information.
await self.search()
elif config.CRAWLER_TYPE == "detail":
# Get the information and comments of the specified post
await self.get_specified_awemes()
elif config.CRAWLER_TYPE == "creator":
# Get the information and comments of the specified creator
await self.get_creators_and_videos()
utils.logger.info("[DouYinCrawler.start] Douyin Crawler finished ...")
async def search(self) -> None:
utils.logger.info("[DouYinCrawler.search] Begin search douyin keywords")
dy_limit_count = 10 # douyin limit page fixed value
if config.CRAWLER_MAX_NOTES_COUNT < dy_limit_count:
config.CRAWLER_MAX_NOTES_COUNT = dy_limit_count
start_page = config.START_PAGE # start page number
for keyword in config.KEYWORDS.split(","):
utils.logger.info(f"[DouYinCrawler.search] Current keyword: {keyword}")
aweme_list: List[str] = []
page = 0
while (page - start_page + 1) * dy_limit_count <= config.CRAWLER_MAX_NOTES_COUNT:
if page < start_page:
utils.logger.info(f"[DouYinCrawler.search] Skip {page}")
page += 1
continue
try:
utils.logger.info(f"[DouYinCrawler.search] search douyin keyword: {keyword}, page: {page}")
posts_res = await self.dy_client.search_info_by_keyword(keyword=keyword,
offset=page * dy_limit_count - dy_limit_count,
publish_time=PublishTimeType(config.PUBLISH_TIME_TYPE)
)
except DataFetchError:
utils.logger.error(f"[DouYinCrawler.search] search douyin keyword: {keyword} failed")
break
page += 1
if "data" not in posts_res:
utils.logger.error(
f"[DouYinCrawler.search] search douyin keyword: {keyword} failed账号也许被风控了。")
break
for post_item in posts_res.get("data"):
try:
aweme_info: Dict = post_item.get("aweme_info") or \
post_item.get("aweme_mix_info", {}).get("mix_items")[0]
except TypeError:
continue
aweme_list.append(aweme_info.get("aweme_id", ""))
await douyin_store.update_douyin_aweme(aweme_item=aweme_info)
utils.logger.info(f"[DouYinCrawler.search] keyword:{keyword}, aweme_list:{aweme_list}")
await self.batch_get_note_comments(aweme_list)
async def get_specified_awemes(self):
"""Get the information and comments of the specified post"""
semaphore = asyncio.Semaphore(config.MAX_CONCURRENCY_NUM)
task_list = [
self.get_aweme_detail(aweme_id=aweme_id, semaphore=semaphore) for aweme_id in config.DY_SPECIFIED_ID_LIST
]
aweme_details = await asyncio.gather(*task_list)
for aweme_detail in aweme_details:
if aweme_detail is not None:
await douyin_store.update_douyin_aweme(aweme_detail)
await self.batch_get_note_comments(config.DY_SPECIFIED_ID_LIST)
async def get_aweme_detail(self, aweme_id: str, semaphore: asyncio.Semaphore) -> Any:
"""Get note detail"""
async with semaphore:
try:
return await self.dy_client.get_video_by_id(aweme_id)
except DataFetchError as ex:
utils.logger.error(f"[DouYinCrawler.get_aweme_detail] Get aweme detail error: {ex}")
return None
except KeyError as ex:
utils.logger.error(
f"[DouYinCrawler.get_aweme_detail] have not fund note detail aweme_id:{aweme_id}, err: {ex}")
return None
async def batch_get_note_comments(self, aweme_list: List[str]) -> None:
"""
Batch get note comments
"""
if not config.ENABLE_GET_COMMENTS:
utils.logger.info(f"[DouYinCrawler.batch_get_note_comments] Crawling comment mode is not enabled")
return
task_list: List[Task] = []
semaphore = asyncio.Semaphore(config.MAX_CONCURRENCY_NUM)
for aweme_id in aweme_list:
task = asyncio.create_task(
self.get_comments(aweme_id, semaphore), name=aweme_id)
task_list.append(task)
if len(task_list) > 0:
await asyncio.wait(task_list)
async def get_comments(self, aweme_id: str, semaphore: asyncio.Semaphore) -> None:
async with semaphore:
try:
# 将关键词列表传递给 get_aweme_all_comments 方法
await self.dy_client.get_aweme_all_comments(
aweme_id=aweme_id,
crawl_interval=random.random(),
is_fetch_sub_comments=config.ENABLE_GET_SUB_COMMENTS,
callback=douyin_store.batch_update_dy_aweme_comments
)
utils.logger.info(
f"[DouYinCrawler.get_comments] aweme_id: {aweme_id} comments have all been obtained and filtered ...")
except DataFetchError as e:
utils.logger.error(f"[DouYinCrawler.get_comments] aweme_id: {aweme_id} get comments failed, error: {e}")
async def get_creators_and_videos(self) -> None:
"""
Get the information and videos of the specified creator
"""
utils.logger.info("[DouYinCrawler.get_creators_and_videos] Begin get douyin creators")
for user_id in config.DY_CREATOR_ID_LIST:
creator_info: Dict = await self.dy_client.get_user_info(user_id)
if creator_info:
await douyin_store.save_creator(user_id, creator=creator_info)
# Get all video information of the creator
all_video_list = await self.dy_client.get_all_user_aweme_posts(
sec_user_id=user_id,
callback=self.fetch_creator_video_detail
)
video_ids = [video_item.get("aweme_id") for video_item in all_video_list]
await self.batch_get_note_comments(video_ids)
async def fetch_creator_video_detail(self, video_list: List[Dict]):
"""
Concurrently obtain the specified post list and save the data
"""
semaphore = asyncio.Semaphore(config.MAX_CONCURRENCY_NUM)
task_list = [
self.get_aweme_detail(post_item.get("aweme_id"), semaphore) for post_item in video_list
]
note_details = await asyncio.gather(*task_list)
for aweme_item in note_details:
if aweme_item is not None:
await douyin_store.update_douyin_aweme(aweme_item)
@staticmethod
def format_proxy_info(ip_proxy_info: IpInfoModel) -> Tuple[Optional[Dict], Optional[Dict]]:
"""format proxy info for playwright and httpx"""
playwright_proxy = {
"server": f"{ip_proxy_info.protocol}{ip_proxy_info.ip}:{ip_proxy_info.port}",
"username": ip_proxy_info.user,
"password": ip_proxy_info.password,
}
httpx_proxy = {
f"{ip_proxy_info.protocol}": f"http://{ip_proxy_info.user}:{ip_proxy_info.password}@{ip_proxy_info.ip}:{ip_proxy_info.port}"
}
return playwright_proxy, httpx_proxy
async def create_douyin_client(self, httpx_proxy: Optional[str]) -> DOUYINClient:
"""Create douyin client"""
cookie_str, cookie_dict = utils.convert_cookies(await self.browser_context.cookies()) # type: ignore
douyin_client = DOUYINClient(
proxies=httpx_proxy,
headers={
"User-Agent": self.user_agent,
"Cookie": cookie_str,
"Host": "www.douyin.com",
"Origin": "https://www.douyin.com/",
"Referer": "https://www.douyin.com/",
"Content-Type": "application/json;charset=UTF-8"
},
playwright_page=self.context_page,
cookie_dict=cookie_dict,
)
return douyin_client
async def launch_browser(
self,
chromium: BrowserType,
playwright_proxy: Optional[Dict],
user_agent: Optional[str],
headless: bool = True
) -> BrowserContext:
"""Launch browser and create browser context"""
if config.SAVE_LOGIN_STATE:
user_data_dir = os.path.join(os.getcwd(), "browser_data",
config.USER_DATA_DIR % config.PLATFORM) # type: ignore
browser_context = await chromium.launch_persistent_context(
user_data_dir=user_data_dir,
accept_downloads=True,
headless=headless,
proxy=playwright_proxy, # type: ignore
viewport={"width": 1920, "height": 1080},
user_agent=user_agent
) # type: ignore
return browser_context
else:
browser = await chromium.launch(headless=headless, proxy=playwright_proxy) # type: ignore
browser_context = await browser.new_context(
viewport={"width": 1920, "height": 1080},
user_agent=user_agent
)
return browser_context
async def close(self) -> None:
"""Close browser context"""
await self.browser_context.close()
utils.logger.info("[DouYinCrawler.close] Browser context closed ...")