/
updater.py
executable file
·201 lines (169 loc) · 9.55 KB
/
updater.py
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#!/usr/bin/env python2.7
import db, scrape_ncf, scrape_tracker, sys, datetime, traceback, time, random, queue, graph, upload, rfweb, history
def log(f, *args, **kwargs):
print >>sys.stderr, datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S'), f.format(*args, **kwargs)
def run_one_cycle():
log("Starting an update cycle")
conn = db.new_connection()
try:
previous_update = db.get_last_update(conn)
try:
log("Scraping NCF page")
ncf_results = scrape_ncf.scrape_ncf(write_copy = 'log/ncf-latest.html',
write_error = datetime.datetime.now().strftime('log/ncf-missing-%Y%m%d%H%M%S.html'))
log("NCF: Server time: {t}", t = ncf_results['server_time'])
log("NCF: Last update: {t}", t = ncf_results['last_update'])
log("NCF: Next update: {t}", t = ncf_results['next_update'])
log("NCF: Outstanding: {n}", n = ncf_results['outstanding'])
log("NCF: In progress: {n}", n = ncf_results['inprogress'])
log("NCF: Refresh: {r}", r = ncf_results['refresh'])
if ncf_results['missing'] > 0:
log("NCF: *MISSING*: {n}", n = ncf_results['missing'])
except:
log("Caught an exception processing the NCF page")
traceback.print_exc()
return datetime.timedelta(minutes=5)
last_update = ncf_results['last_update']
if previous_update is not None and last_update <= previous_update:
log("NCF update ({last_update}) is not newer than database's last update ({previous_update}); skipping this update",
**locals())
return ncf_results['refresh']
try:
log("Scraping tracker page")
tracker_results = scrape_tracker.scrape_tracker(write_copy = 'log/tracker-latest.html',
write_error = datetime.datetime.now().strftime('log/tracker-missing-%Y%m%d%H%M%S.html'))
log("Tracker: Server time: {t}", t = tracker_results['server_time'])
log("Tracker: Last update: {t}", t = tracker_results['last_update'])
log("Tracker: Next update: {t}", t = tracker_results['next_update'])
log("Tracker: Outstanding: {n}", n = tracker_results['outstanding'])
log("Tracker: In progress: {n}", n = tracker_results['inprogress'])
log("Tracker: Refresh: {r}", r = tracker_results['refresh'])
if tracker_results['missing'] > 0:
log("Tracker: *MISSING*: {n}", n = tracker_results['missing'])
except:
log("Caught an exception processing the tracker page")
traceback.print_exc()
return datetime.timedelta(minutes=5)
if last_update != tracker_results['last_update']:
log("NCF and Tracker pages had different last update times. Retrying.")
return datetime.timedelta(minutes=1)
seen_contracts = set()
for contract in ncf_results['contracts'] + tracker_results['contracts']:
try:
cid = contract.contract_id
seen_contracts.add(cid)
db_contract = db.Contract.load(conn = conn, contract_id = cid)
if not db_contract:
if contract.state == db.Contract.IN_PROGRESS and contract.created_min is None:
# Missed it in queue. It must have been created between the last update we processed and the time it was accepted
contract.created_min = previous_update
contract.created_max = contract.accepted
log("New: {contract}", **locals())
contract.insert_row(conn = conn)
else:
merged_contract = db.Contract.merge(db_contract, contract)
if db_contract.state != merged_contract.state:
log("Upd: {merged_contract}", **locals())
merged_contract.update_row(conn = conn)
except:
log("Exception processing contract: {contract}", **locals())
raise
log("Looking for contracts that disappeared from the queue")
for contract in db.Contract.load_by_state(conn = conn, state = db.Contract.IN_QUEUE):
if contract.contract_id not in seen_contracts:
contract.state = db.Contract.GONE
log("Gone: {contract}", **locals())
contract.update_row(conn = conn)
log("Looking for contracts that disappeared from the tracker")
for contract in db.Contract.load_by_state(conn = conn, state = db.Contract.IN_PROGRESS):
if contract.contract_id not in seen_contracts:
contract.state = db.Contract.DONE
log("Done: {contract}", **locals())
contract.update_row(conn = conn)
log("Updating queue history")
active_contracts = db.Contract.load_where(conn = conn, clause = "state IN (:inqueue,:inprogress)", inqueue = db.Contract.IN_QUEUE, inprogress = db.Contract.IN_PROGRESS)
history.update(conn = conn,
active_contracts = active_contracts,
update_time = last_update)
db.add_update_info(conn,
update_time = last_update,
queue_count = len(ncf_results['contracts']),
in_progress_count = len(tracker_results['contracts']))
db.set_last_update(conn, ncf_results['last_update'])
conn.commit()
try:
regenerate_graphs(conn)
except:
log("Exception generating graphs (ignored)")
traceback.print_exc()
except:
log("Exception in update cycle")
traceback.print_exc()
return datetime.timedelta(minutes=5)
finally:
conn.close()
refresh = max(ncf_results['refresh'], tracker_results['refresh'])
log("Update cycle is done, next refresh in {refresh}", **locals())
return refresh
def regenerate_graphs(conn):
last_update, queue_contracts, accepted_contracts = queue.load(conn)
try:
log("Regenerating 60-min queue graph")
queue_60mins = last_update.strftime('graphs/queue_3600_%Y%m%d%H%M%S.png')
graph.make_queue_graph(last_update = last_update, queue_contracts = queue_contracts, accepted_contracts = accepted_contracts, filename=queue_60mins, scale=3600)
log("Uploading 60-min queue graph")
upload.upload(f=queue_60mins, key_name='queue.png')
except:
log("Exception generating 60-min graph (ignored)")
traceback.print_exc()
try:
log("Regenerating 15-min queue graph")
queue_15mins = last_update.strftime('graphs/queue_900_%Y%m%d%H%M%S.png')
graph.make_queue_graph(last_update = last_update, queue_contracts = queue_contracts, accepted_contracts = accepted_contracts, filename=queue_15mins, scale=900)
log("Uploading 15-min queue graph")
upload.upload(f=queue_15mins, key_name='queue15.png')
except:
log("Exception generating 15-min graph (ignored)")
traceback.print_exc()
try:
log("Regenerating 1-day delivery time graph")
delivery_1day = last_update.strftime('graphs/delivery_1day_%Y%m%d%H%M%S.png')
contracts = db.Contract.load_completed_after(conn = conn, cutoff = last_update - datetime.timedelta(days=1))
graph.make_delivery_graph(last_update = last_update, done_contracts = contracts, filename=delivery_1day, scale=3600, title="Red Frog delivery times - last day")
log("Uploading 1-day delivery time graph")
upload.upload(f=delivery_1day, key_name='delivery_1day.png')
except:
log("Exception generating 1-day delivery graph (ignored)")
traceback.print_exc()
try:
log("Regenerating 7-day delivery time graph")
delivery_7day = last_update.strftime('graphs/delivery_7day_%Y%m%d%H%M%S.png')
contracts = db.Contract.load_completed_after(conn = conn, cutoff = last_update - datetime.timedelta(days=7))
graph.make_delivery_graph(last_update = last_update, done_contracts = contracts, filename=delivery_7day, scale=3600, title="Red Frog delivery times - last week")
log("Uploading 7-day delivery time graph")
upload.upload(f=delivery_7day, key_name='delivery_7day.png')
except:
log("Exception generating 7-day delivery graph (ignored)")
traceback.print_exc()
try:
log("Regenerating 7-day queue history graph")
history_7day = last_update.strftime('graphs/queue_history_7day_%Y%m%d%H%M%S.png')
history = db.load_queue_history(conn = conn, first_update = last_update - datetime.timedelta(days=7), last_update = last_update)
graph.make_history_graph(queue_history = history, filename=history_7day, title="Red Frog queue size - last week")
log("Uploading 7-day queue history graph")
upload.upload(f=history_7day, key_name='queue_history_7day.png')
except:
log("Exception generating 7-day queue history graph (ignored)")
traceback.print_exc()
def run_indefinitely():
log("Starting up..")
# provoke errors early
db.init()
rfweb.init()
upload.init()
while True:
delay = run_one_cycle() + datetime.timedelta(seconds = random.normalvariate(mu=0.0, sigma=15.0))
log ("Sleeping for {delay}", **locals())
time.sleep(delay.total_seconds())
if __name__ == '__main__':
run_indefinitely()