erjemin/instaloader
erjemin/instaloader
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Evaluate status field in JSON response

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In GraphQL queries, this field should be set to "ok". Checking this
addresses #31 (and maybe other issues as well) and simplifies error
handling.
This commit is contained in:
Alexander Graf 2017-08-13 10:55:29 +02:00
parent dcc48e37df
commit 57329482f3
1 changed files with 17 additions and 19 deletions
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36
instaloader.py
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@ -247,7 +247,14 @@ class Instaloader:
raise QueryReturnedNotFoundException("404") raise QueryReturnedNotFoundException("404")
if resp.status_code != 200: if resp.status_code != 200:
raise ConnectionException("HTTP error code {}.".format(resp.status_code)) raise ConnectionException("HTTP error code {}.".format(resp.status_code))
return resp.json() resp_json = resp.json()
if 'status' in resp_json and resp_json['status'] != "ok":
if 'message' in resp_json:
raise ConnectionException("Returned \"{}\" status, message \"{}\".".format(resp_json['status'],
resp_json['message']))
else:
raise ConnectionException("Returned \"{}\" status.".format(resp_json['status']))
return resp_json
except (ConnectionException, json.decoder.JSONDecodeError) as err: except (ConnectionException, json.decoder.JSONDecodeError) as err:
error_string = "JSON Query to {}: {}".format(url, err) error_string = "JSON Query to {}: {}".format(url, err)
if tries <= 1: if tries <= 1:
@ -305,10 +312,12 @@ class Instaloader:
tmpsession.headers['accept'] = '*/*' tmpsession.headers['accept'] = '*/*'
if referer is not None: if referer is not None:
tmpsession.headers['referer'] = referer tmpsession.headers['referer'] = referer
return self._get_json('graphql/query', resp_json = self._get_json('graphql/query', params={'query_id': query_id,
params={'query_id': query_id, 'variables': json.dumps(variables, separators=(',', ':'))},
'variables': json.dumps(variables, separators=(',', ':'))}, session=tmpsession)
session=tmpsession) if 'status' not in resp_json:
self._error("GraphQL response did not contain a \"status\" field.")
return resp_json
def get_username_by_id(self, profile_id: int) -> str: def get_username_by_id(self, profile_id: int) -> str:
"""To get the current username of a profile, given its unique ID, this function can be used.""" """To get the current username of a profile, given its unique ID, this function can be used."""
@ -553,23 +562,12 @@ class Instaloader:
else: else:
raise ConnectionException('Login error! Connection error!') raise ConnectionException('Login error! Connection error!')
def get_post_metadata(self, shortcode: str, tries: int = 3) -> Dict[str, Any]: def get_post_metadata(self, shortcode: str) -> Dict[str, Any]:
"""Get full metadata of the post associated with given shortcode. """Get full metadata of the post associated with given shortcode.
:raises NodeUnavailableException: If the data cannot be retrieved.""" :raises NodeUnavailableException: If the data cannot be retrieved."""
pic_json = self._get_json("p/{0}/".format(shortcode), params={'__a': 1}) pic_json = self._get_json("p/{0}/".format(shortcode), params={'__a': 1})
try: media = pic_json["graphql"]["shortcode_media"] if "graphql" in pic_json else pic_json["media"]
media = pic_json["graphql"]["shortcode_media"] if "graphql" in pic_json else pic_json["media"]
except (KeyError, TypeError) as err:
# It appears the returned JSON is sometimes empty - trying again might help
print(json.dumps(pic_json, indent=4), file=sys.stderr)
error_string = "Post {}: {}".format(shortcode, err)
if tries <= 1:
raise NodeUnavailableException(error_string)
else:
self._error(error_string + " [retrying]")
self._sleep()
media = self.get_post_metadata(shortcode, tries - 1)
return media return media
def get_location(self, post_metadata: Dict[str, Any]) -> Optional[Dict[str, str]]: def get_location(self, post_metadata: Dict[str, Any]) -> Optional[Dict[str, str]]:
@ -1022,7 +1020,7 @@ class Instaloader:
if sessionfile is not None: if sessionfile is not None:
print(err, file=sys.stderr) print(err, file=sys.stderr)
self._log("Session file does not exist yet - Logging in.") self._log("Session file does not exist yet - Logging in.")
if username != self.test_login(self.session): if self.username is None or username != self.test_login(self.session):
if password is not None: if password is not None:
self.login(username, password) self.login(username, password)
else: else: