Limit the number of prev_events of new events
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@ -34,6 +34,7 @@ from ._base import BaseHandler
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from canonicaljson import encode_canonical_json
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import logging
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import random
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logger = logging.getLogger(__name__)
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@ -415,6 +416,18 @@ class MessageHandler(BaseHandler):
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builder.room_id,
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)
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# We want to limit the max number of prev events we point to in our
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# new event
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if len(latest_ret) > 10:
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# Sort by reverse depth, so we point to the most recent.
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latest_ret.sort(key=lambda a: -a[2])
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new_latest_ret = latest_ret[:5]
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# We also randomly point to some of the older events, to make
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# sure that we don't completely ignore the older events.
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new_latest_ret.extend(random.sample(latest_ret, 5))
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latest_ret = new_latest_ret
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if latest_ret:
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depth = max([d for _, _, d in latest_ret]) + 1
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else:
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