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add FETCH_DELAY for mediaing fetcher #234

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add FETCH_DELAY for mediaing fetcher #234

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12 changes: 12 additions & 0 deletions idigbio_ingestion/mediaing/fetcher.py
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Original file line number Diff line number Diff line change
Expand Up @@ -230,6 +230,9 @@ class FetchItem(object):
#: Can http connections be reuesed?
REUSE_CONN = True

#: Delay (throttle) to add to each request
FETCH_DELAY = 0

#: class (static) variable for the session to use
session = None

Expand Down Expand Up @@ -268,6 +271,8 @@ def content(self):

def get_media(self):
"This calls get_media and handles all the failure scenarios"
# Trottle when FETCH_DELAY is set
sleep(self.FETCH_DELAY)
try:
self.fetch()
self.validate()
Expand Down Expand Up @@ -478,3 +483,10 @@ def get_media(self):
class ArctosItem(FetchItem):
FETCHER_COUNT = 1
REUSE_CONN = False
# 12s is slightly longer than the current (2023.09.09) value of crawl-delay in their robots.txt:
#
# User-agent: *
# crawl-delay: 10
# ...
#
FETCH_DELAY = 12