142 lines
5.2 KiB
Python
142 lines
5.2 KiB
Python
import json
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import time
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from threading import Thread
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import uuid
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import requests
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from django.conf import settings
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from rest_framework.exceptions import APIException, ParseError
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from apps.third.errors import DH_REQUEST_ERROR
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from apps.third.models import Tlog
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from apps.utils.tools import print_roundtrip
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from django.utils.timezone import now
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requests.packages.urllib3.disable_warnings()
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class DhClient:
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"""
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大华
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"""
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def __init__(self, client_id=settings.DAHUA_CLIENTID,
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client_secret=settings.DAHUA_SECRET) -> None:
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if settings.DAHUA_ENABLED:
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self.client_id = client_id
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self.client_secret = client_secret
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self.headers = {}
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self.isGetingToken = False
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self.isRuning = True
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self.token = None
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self.t = None # 线程
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self.log = {}
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self.setup()
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def _get_token_loop(self):
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while self.isRuning:
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params = {
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'grant_type': 'client_credentials',
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'client_id': self.client_id,
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'client_secret': self.client_secret
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}
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r = requests.post(params=params,
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url=settings.DAHUA_BASE_URL + '/evo-apigw/evo-oauth/oauth/token', verify=False)
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ret = r.json()
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if ret['success']:
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self.token = ret['data']['access_token']
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self.headers['Authorization'] = 'bearer ' + ret['data']['access_token']
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self.headers['User-Id'] = '1'
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time.sleep(3600)
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def setup(self):
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t = Thread(target=self._get_token_loop, args=(), daemon=True)
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t.start()
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def __del__(self):
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"""
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自定义销毁
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"""
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self.isRuning = False
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# self.t.join()
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def request(self, url: str, method: str, params=dict(), json=dict(), timeout=10,
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file_path_rela=None, raise_exception=True):
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if not settings.DAHUA_ENABLED:
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raise ParseError('大华对接未启用')
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self.log = {"requested_at": now(), "id": uuid.uuid4(), "path": url, "method": method,
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"params": params, "body": json, "target": "dahua", "result": 10}
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files = None
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if file_path_rela: # 相对路径
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files = {'file': open(settings.BASE_DIR + file_path_rela, 'rb')}
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try:
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if params:
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url = url.format(**params)
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self.log.update({"path": url})
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r = getattr(requests, method)('{}{}'.format(settings.DAHUA_BASE_URL, url),
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headers=self.headers, params=params, json=json,
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timeout=timeout, files=files, verify=False)
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except Exception:
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self.handle_log(result='error')
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if raise_exception:
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raise APIException(**DH_REQUEST_ERROR)
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return 'error', DH_REQUEST_ERROR
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# if settings.DEBUG:
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# print_roundtrip(r)
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if r.status_code == 200:
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ret = r.json()
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if ret['code'] not in ['0', '100', '00000', '1000', 0, 100, 1000]:
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detail = '大华错误:' + \
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'{}|{}{}{}'.format(str(ret['code']), ret.get('errMsg', ''),
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ret.get('desc', ''), str(ret.get('data', '')))
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err_detail = dict(detail=detail, code='dh_'+str(ret['code']))
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self.handle_log(result='fail', response=ret)
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if raise_exception:
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raise ParseError(**err_detail)
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return 'fail', dict(detail=detail, code='dh_'+str(ret['code']))
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# self.handle_log(result='success', response=ret) # 成功的日志就不记录了
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return 'success', ret['data'] if 'data' in ret else None
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self.handle_log(result='error', response=None)
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if raise_exception:
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raise APIException(**DH_REQUEST_ERROR)
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return 'error', DH_REQUEST_ERROR
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def _get_response_ms(self):
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"""
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Get the duration of the request response cycle is milliseconds.
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In case of negative duration 0 is returned.
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"""
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response_timedelta = now() - self.log["requested_at"]
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response_ms = int(response_timedelta.total_seconds() * 1000)
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return max(response_ms, 0)
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def handle_log(self, result, response=None):
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self.log.update({
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"result": result,
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"response": response,
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"response_ms": self._get_response_ms()
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})
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Tlog(**self.log).save()
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def get_full_pic(self, path: str):
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"""返回完整访问地址
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"""
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return '{}/evo-apigw/evo-oss/{}?token={}'.format(settings.DAHUA_BASE_URL, path, self.token)
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def snap(self, code: str):
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"""摄像头实时截图
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Args:
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code (str): 视频通道编号
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返回完整访问地址
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"""
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json_data = {
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"deviceCode": "1000038",
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"operation": "generalJsonTransport",
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"params": "{\"method\":\"dev.snap\",\"id\":123,\"params\":{\"DevID\":\"1000038\",\"DevChannel\":0,\"PicNum\":1,\"SnapType\":1,\"CmdSrc\":0}}",
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}
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if '$' in code:
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d_code = code.split('$')[0]
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json_data['deviceCode'] = d_code |