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Use signal.alarm to Deadline utils.http.get_url and throw useful exceptions

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This commit is contained in:
jesopo 2018-10-10 14:25:44 +01:00
parent be75f72356
commit 5b9ffe013d
1 changed files with 28 additions and 16 deletions
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24
src/utils/http.py
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@ -1,4 +1,4 @@
import re, traceback, urllib.error, urllib.parse import re, signal, traceback, urllib.error, urllib.parse
import json as _json import json as _json
import bs4, requests import bs4, requests
@ -8,6 +8,14 @@ REGEX_HTTP = re.compile("https?://", re.I)
RESPONSE_MAX = (1024*1024)*100 RESPONSE_MAX = (1024*1024)*100
class HTTPException:
pass
class HTTPTimeoutException(HTTPException):
pass
class HTTPParsingException(HTTPException):
pass
def get_url(url, method="GET", get_params={}, post_data=None, headers={}, def get_url(url, method="GET", get_params={}, post_data=None, headers={},
json_data=None, code=False, json=False, soup=False, parser="lxml"): json_data=None, code=False, json=False, soup=False, parser="lxml"):
@ -19,6 +27,9 @@ def get_url(url, method="GET", get_params={}, post_data=None, headers={},
if not "User-Agent" in headers: if not "User-Agent" in headers:
headers["User-Agent"] = USER_AGENT headers["User-Agent"] = USER_AGENT
signal.signal(signal.SIGALRM, lambda: raise TimeoutError())
signal.alarm(5)
try:
response = requests.request( response = requests.request(
method.upper(), method.upper(),
url, url,
@ -29,6 +40,10 @@ def get_url(url, method="GET", get_params={}, post_data=None, headers={},
stream=True stream=True
) )
response_content = response.raw.read(RESPONSE_MAX, decode_content=True) response_content = response.raw.read(RESPONSE_MAX, decode_content=True)
except TimeoutError:
raise HTTPTimeoutException()
finally:
signal.signal(signal.SIGALRM, signal.SIG_IGN)
if soup: if soup:
soup = bs4.BeautifulSoup(response_content, parser) soup = bs4.BeautifulSoup(response_content, parser)
@ -40,11 +55,8 @@ def get_url(url, method="GET", get_params={}, post_data=None, headers={},
if json and data: if json and data:
try: try:
data = _json.loads(data) data = _json.loads(data)
except _json.decoder.JSONDecodeError: except _json.decoder.JSONDecodeError as e:
traceback.print_exc() raise HTTPParsingException(str(e))
if code:
return 0, False
return False
if code: if code:
return response.status_code, data return response.status_code, data