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summary: moves availability code and adds testcases

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extracts the availability calculations to own testable module
This commit is contained in:
Michael Schmoock
2020-07-23 20:41:22 +02:00
committed by Christian Decker
parent 01b075117f
commit 5a6489c3ae
3 changed files with 194 additions and 41 deletions
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32
summary/summary_avail.py Normal file
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from datetime import datetime
# ensure an rpc peer is added
def addpeer(p, rpcpeer):
pid = rpcpeer['id']
if not pid in p.avail_peerstate:
p.avail_peerstate[pid] = {
'connected' : rpcpeer['connected'],
'last_seen' : datetime.now() if rpcpeer['connected'] else None,
'avail' : 1.0 if rpcpeer['connected'] else 0.0
}
# exponetially smooth online/offline states of peers
def trace_availability(p, rpcpeers):
p.avail_count += 1
leadwin = max(min(p.avail_window, p.avail_count * p.avail_interval), p.avail_interval)
samples = leadwin / p.avail_interval
alpha = 1.0 / samples
beta = 1.0 - alpha
for rpcpeer in rpcpeers['peers']:
pid = rpcpeer['id']
addpeer(p, rpcpeer)
if rpcpeer['connected']:
p.avail_peerstate[pid]['last_seen'] = datetime.now()
p.avail_peerstate[pid]['connected'] = True
p.avail_peerstate[pid]['avail'] = 1.0 * alpha + p.avail_peerstate[pid]['avail'] * beta
else:
p.avail_peerstate[pid]['connected'] = False
p.avail_peerstate[pid]['avail'] = 0.0 * alpha + p.avail_peerstate[pid]['avail'] * beta