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Code Issues Releases Activity

Don't retry downloads with 404 status

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Instead of retrying a download attempt answered with a 404, the download
is aborted after the first attempt. Thanks to the _error_catcher(), a
message is printed and Instaloader goes on with the next files to
download.

Further, this commit removes the unneeded NodeUnavailableException and
adjusts docstrings accordingly.
This commit is contained in:
Alexander Graf 2017-08-13 12:39:59 +02:00
parent 57329482f3
commit 4ce6826f82
1 changed files with 7 additions and 7 deletions
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14
instaloader.py
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@ -73,10 +73,6 @@ class BadResponseException(InstaloaderException):
pass
class NodeUnavailableException(InstaloaderException):
pass
class BadCredentialsException(InstaloaderException):
pass
@ -210,6 +206,7 @@ class Instaloader:
def _get_and_write_raw(self, url: str, filename: str, tries: int = 3) -> None:
"""Downloads raw data.
:raises QueryReturnedNotFoundException: When the server responds with a 404.
:raises ConnectionException: When download repeatedly failed."""
try:
resp = self._get_anonymous_session().get(url, stream=True)
@ -219,6 +216,9 @@ class Instaloader:
resp.raw.decode_content = True
shutil.copyfileobj(resp.raw, file)
else:
if resp.status_code == 404:
# 404 not worth retrying.
raise QueryReturnedNotFoundException("404 when accessing {}.".format(url))
raise ConnectionException("HTTP error code {}.".format(resp.status_code))
except (urllib3.exceptions.HTTPError, requests.exceptions.RequestException, ConnectionException) as err:
error_string = "URL {}: {}".format(url, err)
@ -238,6 +238,8 @@ class Instaloader:
:param session: Session to use, or None to use self.session
:param tries: Maximum number of attempts until a exception is raised
:return: Decoded response dictionary
:raises QueryReturnedNotFoundException: When the server responds with a 404.
:raises ConnectionException: When query repeatedly failed.
"""
sess = session if session else self.session
try:
@ -563,9 +565,7 @@ class Instaloader:
raise ConnectionException('Login error! Connection error!')
def get_post_metadata(self, shortcode: str) -> Dict[str, Any]:
"""Get full metadata of the post associated with given shortcode.
:raises NodeUnavailableException: If the data cannot be retrieved."""
"""Get full metadata of the post associated with given shortcode."""
pic_json = self._get_json("p/{0}/".format(shortcode), params={'__a': 1})
media = pic_json["graphql"]["shortcode_media"] if "graphql" in pic_json else pic_json["media"]
return media