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Wait smarter to avoid HTTP error code 429

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Additional sleeps are necessary because Instagram is rate limiting
GraphQL queries. The error does not occur if not more than 100 queries
are made in a sliding window of eleven minutes.
Ports a894c2d to version 3.
This commit is contained in:
André Koch-Kramer 2017-08-24 18:30:46 +02:00
parent 2e47642f74
commit bb71c40b56
1 changed files with 38 additions and 20 deletions
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58
instaloader.py
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@ -6,6 +6,7 @@ import getpass
import json
import os
import pickle
import random
import re
import shutil
import string
@ -356,6 +357,7 @@ class Instaloader:
self.download_geotags = download_geotags
self.download_captions = download_captions
self.download_comments = download_comments
self.previous_queries = dict()
# error log, filled with error() and printed at the end of Instaloader.main()
self.error_log = []
@ -375,12 +377,10 @@ class Instaloader:
self.dirname_pattern, self.filename_pattern,
self.download_videos, self.download_geotags,
self.download_captions, self.download_comments)
new_loader.request_count = self.request_count
new_loader.last_request_time = self.last_request_time
new_loader.previous_queries = self.previous_queries
yield new_loader
self.error_log.extend(new_loader.error_log)
self.request_count = new_loader.request_count
self.last_request_time = new_loader.last_request_time
self.previous_queries = new_loader.previous_queries
def _log(self, *msg, sep='', end='\n', flush=False):
"""Log a message to stdout that can be suppressed with --quiet."""
@ -408,17 +408,8 @@ class Instaloader:
def _sleep(self):
"""Sleep a short time if self.sleep is set. Called before each request to instagram.com."""
if not self.sleep:
return
max_sleep_int = 600/50 # 50 requests per 10 minutes
count_for_max_sleep = 80 # after 80 requests.
sleep_interval = min(self.request_count, count_for_max_sleep) / count_for_max_sleep * max_sleep_int
current_time = time.monotonic()
sleep_time = self.last_request_time + sleep_interval - current_time
if sleep_time > 0.0:
time.sleep(sleep_time)
self.request_count += 1
self.last_request_time = max(current_time, self.last_request_time + sleep_interval)
if self.sleep:
time.sleep(random.uniform(0.5, 3))
def _get_and_write_raw(self, url: str, filename: str, tries: int = 3) -> None:
"""Downloads raw data.
@ -446,18 +437,41 @@ class Instaloader:
self._sleep()
self._get_and_write_raw(url, filename, tries - 1)
def get_json(self, url: str, params: Optional[Dict[str, Any]] = None,
def get_json(self, url: str, params: Dict[str, Any],
session: Optional[requests.Session] = None, tries: int = 3) -> Dict[str, Any]:
"""JSON request to Instagram.
:param url: URL, relative to https://www.instagram.com/
:param params: GET parameters
:param session: Session to use, or None to use self.session
:param tries: Maximum number of attempts until a exception is raised
:param tries: Maximum number of attempts until an exception is raised
:return: Decoded response dictionary
:raises QueryReturnedNotFoundException: When the server responds with a 404.
:raises ConnectionException: When query repeatedly failed.
"""
def graphql_query_waittime(query_id: int, untracked_queries: bool = False) -> int:
sliding_window = 660
timestamps = self.previous_queries.get(query_id)
if not timestamps:
return sliding_window if untracked_queries else 0
current_time = time.monotonic()
timestamps = list(filter(lambda t: t > current_time - sliding_window, timestamps))
self.previous_queries[query_id] = timestamps
if len(timestamps) < 100 and not untracked_queries:
return 0
return round(min(timestamps) + sliding_window - current_time) + 6
is_graphql_query = 'query_id' in params and 'graphql/query' in url
if is_graphql_query:
query_id = params['query_id']
waittime = graphql_query_waittime(query_id)
if waittime > 0:
self._log('\nToo many queries in the last time. Need to wait {} seconds.'.format(waittime))
time.sleep(waittime)
timestamp_list = self.previous_queries.get(query_id)
if timestamp_list is not None:
timestamp_list.append(time.monotonic())
else:
self.previous_queries[query_id] = [time.monotonic()]
sess = session if session else self.session
try:
self._sleep()
@ -476,7 +490,7 @@ class Instaloader:
else:
raise ConnectionException("Returned \"{}\" status.".format(resp_json['status']))
return resp_json
except (ConnectionException, json.decoder.JSONDecodeError) as err:
except (ConnectionException, json.decoder.JSONDecodeError, requests.exceptions.RequestException) as err:
error_string = "JSON Query to {}: {}".format(url, err)
if tries <= 1:
raise ConnectionException(error_string)
@ -484,9 +498,13 @@ class Instaloader:
if isinstance(err, TooManyRequests):
text_for_429 = ("HTTP error code 429 was returned because too many queries occured in the last time. "
"Please do not use Instagram in your browser or run multiple instances of Instaloader "
"in parallel. The request is retried in about four minutes.")
"in parallel.")
print(textwrap.fill(text_for_429), file=sys.stderr)
time.sleep(660/3)
if is_graphql_query:
waittime = graphql_query_waittime(query_id=params['query_id'], untracked_queries=True)
if waittime > 0:
self._log('The request will be retried in {} seconds.'.format(waittime))
time.sleep(waittime)
self._sleep()
self.get_json(url, params, sess, tries - 1)