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osmtracker.py
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osmtracker.py
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#!/usr/bin/env python
import sys, time
import argparse
import osmapi
import osm.changeset
import osm.diff as osmdiff
import osm.poly
import json, pickle
import datetime, pytz
import pprint
import logging, logging.config
import db as database
import config as configfile
import importlib
import ColourScheme as col
import HumanTime
import operator
import urllib2, socket
import traceback
import BackendHtml, BackendHtmlSummary, BackendGeoJson
import prometheus_client
logger = logging.getLogger('osmtracker')
def fetch_and_process_diff(config, dapi, seqno, ctype):
chgsets = dapi.get_diff_csets(seqno, ctype)
return chgsets
# FIXME: Refactor to use db.find with timestamps
def cset_refresh_meta(args, config, db, cset, no_delay=False):
cid = cset['cid']
timeout_s = config.get('refresh_meta_minutes', 'tracker')*60
refresh = no_delay
if timeout_s>0:
now = datetime.datetime.utcnow().replace(tzinfo=pytz.utc)
last_refresh = cset['refreshed']
age_s = (now-last_refresh).total_seconds()
if age_s > timeout_s:
logger.debug('Refresh meta due to age {}s, timeout {}s'.format(age_s, timeout_s))
refresh = True
if refresh:
logger.info('Refresh meta for cid {} (no_delay={})'.format(cid, no_delay))
c = osm.changeset.Changeset(cid, api=config.get('osm_api_url','tracker'))
c.downloadMeta()
old_meta = db.chgset_get_meta(cid)
return db.chgset_set_meta(cid, c.meta)
return False
def cset_process_local1(args, config, db, cset, info):
'''Preprocess cset, i.e. locally compute various information based on meta, tag
info or other data.
'''
cid = cset['cid']
meta = db.chgset_get_meta(cid)
if not meta:
logger.error('No meta for cset:{}'.format(cset))
if not 'misc' in info:
misc = {}
info['misc'] = misc
user = meta['user']
colours = col.ColourScheme(seed=0)
misc['user_colour'] = colours.get_colour(user)
else:
misc = info['misc']
if cset_refresh_meta(args, config, db, cset, no_delay=('timestamp_type' not in misc)) or 'timestamp_type' not in misc:
(tstype, timestamp) = osm.changeset.Changeset.get_timestamp(meta)
ts_type2txt = { 'created_at': 'Started', 'closed_at': 'Closed' }
misc['timestamp_type'] = tstype
misc['timestamp_type_txt'] = ts_type2txt[tstype]
misc['timestamp'] = timestamp
# Update generation, notes etc might have changed
db.generation_advance()
now = datetime.datetime.utcnow().replace(tzinfo=pytz.utc)
observed_s = (now-cset['source']['observed']).total_seconds()
if observed_s < 240:
state = 'new'
else:
state = 'old'
misc['state'] = state
def cset_process_local2(args, config, db, cset, meta, info):
'''Preprocess cset, i.e. locally compute various information based on meta, tag
info or other data.
'''
cset_process_local1(args, config, db, cset, info)
misc = info['misc']
tagdiff = info['tagdiff']
max_len = 20
for action in ['create', 'modify', 'delete']:
tdiff = []
sorted_tags = sorted(tagdiff[action].items(), key=operator.itemgetter(1), reverse=True)
for k,v in sorted_tags:
tdiff.append((k, v, action))
if len(tdiff) == max_len<len(sorted_tags): # Max tags allowed
num = len(sorted_tags)-max_len
misc['processed_tagdiff_'+action+'_trailer'] = '{} other {} item{}'.format(num, action, '' if num==1 else 's')
break
misc['processed_tagdiff_'+action] = tdiff
def cset_process_open(args, config, db, cset, debug=0):
'''Initial processing of changesets. Also applied to open changesets'''
info = {'state': {}}
cset_process_local1(args, config, db, cset, info)
return info
def cset_process(args, config, db, cset, debug=0):
'''One-time processing of closed changesets'''
cid = cset['cid']
######geojson = config.get('path', 'tracker')+'/'+config.get('geojsondiff-filename', 'tracker')
####bbox = config.get('path', 'tracker')+'/'+config.get('bounds-filename', 'tracker')
truncated = None
diffs = None
try:
c = osm.changeset.Changeset(cid, api=config.get('osm_api_url','tracker'))
c.apidebug = debug
c.datadebug = debug
c.downloadMeta() # FIXME: Use data from db
c.downloadData()
#c.downloadGeometry()
maxtime = config.get('cset_processing_time_max_s', 'tracker')
c.downloadGeometry(maxtime=maxtime)
c.getGeoJsonDiff()
#c.getReferencedElements()
c.buildSummary(maxtime=maxtime)
c.buildDiffList(maxtime=maxtime)
except osm.changeset.Timeout as e:
truncated = 'Timeout'
info = c.data_export()
if truncated:
info['state']['truncated'] = truncated
logger.error('Changeset {} not fully processed: {}'.format(c.id, truncated))
# else:
# if geojson:
# fn = geojson.format(id=c.id)
# with open(fn, 'w') as f:
# json.dump(c.getGeoJsonDiff(), f)
# if bbox:
# b = '{},{},{},{}'.format(c.meta['min_lat'], c.meta['min_lon'],
# c.meta['max_lat'], c.meta['max_lon'])
# fn = bbox.format(id=c.id)
# with open(fn, 'w') as f:
# f.write(b)
cset_process_local2(args, config, db, cset, c.meta, info)
# Apply labels
labelrules = config.get('post_labels','tracker')
clabels = c.build_labels(labelrules)
logger.debug('Added post labels to cid {}: {}'.format(cid, clabels))
cset['labels'] += clabels
c.unload()
return info
def cset_reprocess(args, config, db, cset):
'''Periodic re-processing of closed changesets'''
cid = cset['cid']
info = db.chgset_get_info(cid)
cset_process_local1(args, config, db, cset, info)
return info
def diff_fetch(args, config, db):
logger.debug('Fetching minutely diff')
if args and args.simulate:
cid = args.simulate
source = {'type': 'minute',
'sequenceno': 123456789,
'observed': datetime.datetime.utcnow().replace(tzinfo=pytz.utc)}
db.chgset_append(cid, source)
return
if args and args.metrics:
m_pt = prometheus_client.Histogram('osmtracker_minutely_diff_processing_time_seconds',
'Processing time for latest minutely diff (seconds)')
m_diff_ts = prometheus_client.Gauge('osmtracker_minutely_diff_timestamp',
'Timestamp of recently processed minutely diff')
m_diff_proc_ts = prometheus_client.Gauge('osmtracker_minutely_diff_processing_timestamp',
'Timestamp of when recently processed minutely diff was processed')
m_seqno = prometheus_client.Gauge('osmtracker_minutely_diff_latest_seqno',
'Sequence number of recently processed minutely diff')
m_head_seqno = prometheus_client.Gauge('osmtracker_minutely_diff_head_seqno',
'Head sequence number of minutely diff replication')
m_csets = prometheus_client.Gauge('osmtracker_minutely_diff_csets_observed',
'Number of changesets observed in recently processed minutely diff')
dapi = osmdiff.OsmDiffApi()
ptr = db.pointer
if args:
if args.log_level == 'DEBUG':
dapi.debug = True
if args.history:
history = HumanTime.human2date(args.history)
head = dapi.get_state('minute')
pointer = dapi.get_seqno_le_timestamp('minute', history, head)
db.pointer = pointer
elif args.initptr or not ptr:
head = dapi.get_state('minute', seqno=None)
head.sequenceno_advance(offset=-1)
db.pointer = head
logger.debug('Initialized pointer to:{}'.format(db.pointer))
while True:
try:
ptr = db.pointer['seqno']
head = dapi.get_state('minute', seqno=None)
start = None
now = datetime.datetime.utcnow().replace(tzinfo=pytz.utc)
if ptr <= head.sequenceno:
logger.debug('Fetching diff, ptr={}, head={}'.format(ptr, head.sequenceno))
start = time.time()
chgsets = fetch_and_process_diff(config, dapi, ptr, 'minute')
logger.debug('{} changesets: {}'.format(len(chgsets), chgsets))
for cid in chgsets:
source = {'type': 'minute',
'sequenceno': ptr,
'observed': now}
db.chgset_append(cid, source)
# Set timestamp from old seqno as new seqno might not yet exist
seqno = db.pointer['seqno']
nptr = dapi.get_state('minute', seqno=seqno)
db.pointer_meta_update({'timestamp': nptr.timestamp()})
db.pointer_advance()
m_diff_ts.set(time.mktime(nptr.timestamp().timetuple())+nptr.timestamp().microsecond/1E6)
m_diff_proc_ts.set_to_current_time()
m_seqno.set(seqno)
m_head_seqno.set(head.sequenceno)
m_csets.set(len(chgsets))
except KeyboardInterrupt as e:
logger.warn('Processing interrupted, exiting...')
raise e
except (urllib2.HTTPError, urllib2.URLError, socket.error, socket.timeout) as e:
logger.error('Error retrieving OSM data: '.format(e))
logger.error(traceback.format_exc())
time.sleep(60)
if args and args.track:
if start:
end = time.time()
elapsed = end-start
else:
elapsed = 0
if args.metrics:
m_pt.observe(elapsed)
if ptr >= head.sequenceno: # No more diffs to fetch
delay = min(60, max(0, 60-elapsed))
logger.info('Processing seqno {} took {:.2f}s. Sleeping {:.2f}s'.format(ptr, elapsed, delay))
time.sleep(delay)
else:
logger.info('Processing seqno {} took {:.2f}s. Head ptr is {}'.format(ptr, elapsed, head.sequenceno))
else:
break
return 0
def csets_filter(args, config, db):
while True:
cset = db.chgset_start_processing(db.STATE_NEW, db.STATE_BOUNDS_CHECK)
if not cset:
break
try:
cid = cset['cid']
# Apply labels
labelrules = config.get('pre_labels','tracker')
try:
c = osm.changeset.Changeset(cid, api=config.get('osm_api_url','tracker'))
c.downloadMeta()
clabels = c.build_labels(labelrules)
logger.debug('Added labels to cid {}: {}'.format(cid, clabels))
cset['labels'] = clabels
except osmapi.ApiError as e:
logger.error('Failed reading changeset {}: {}'.format(cid, e))
db.chgset_processed(cset, state=db.STATE_QUARANTINED, failed=True)
# Check labels
labelfilters = config.get('prefilter_labels','tracker')
passed_filters = False
for lf in labelfilters:
logger.debug('lf={}'.format(lf))
if set(lf).issubset(set(clabels)):
logger.debug("Cset labels '{}' is subset of '{}'".format(clabels, lf))
passed_filters = True
if not passed_filters:
logger.debug('Cset {} not within area'.format(cid))
db.chgset_drop(cid)
else:
logger.debug('Cset {} passed filters'.format(cid))
db.chgset_set_meta(cid, c.meta)
db.chgset_processed(cset, state=db.STATE_BOUNDS_CHECKED)
except KeyboardInterrupt as e:
logging.warn('Processing interrupted, restoring cid {} state to NEW...'.format(cid))
db.chgset_processed(cset, state=db.STATE_NEW)
raise e
return 0
def csets_analyze_initial(args, config, db):
# Initial and open changesets
while True:
cset = db.chgset_start_processing(db.STATE_BOUNDS_CHECKED, db.STATE_ANALYZING1)
if not cset:
break
try:
logger.debug('Cset {} analysis step 1'.format(cset['cid']))
info = cset_process_open(args, config, db, cset)
db.chgset_set_info(cset['cid'], info)
meta = db.chgset_get_meta(cset['cid'])
if meta['open']:
db.chgset_processed(cset, state=db.STATE_OPEN, refreshed=True)
else:
db.chgset_processed(cset, state=db.STATE_CLOSED, refreshed=True)
except KeyboardInterrupt as e:
logging.warn('Processing interrupted, restoring cid {} state to BOUNDS_CHECKED...'.format(cset['cid']))
db.chgset_processed(cset, state=db.STATE_BOUNDS_CHECKED)
raise e
def csets_analyze_on_close(args, config, db):
# One-time processing when changesets are closed
while True:
cset = db.chgset_start_processing(db.STATE_CLOSED, db.STATE_ANALYZING2)
if not cset:
break
try:
logger.debug('Cset {} analysis step 2'.format(cset['cid']))
info = cset_process(args, config, db, cset)
db.chgset_set_info(cset['cid'], info)
meta = db.chgset_get_meta(cset['cid'])
db.chgset_processed(cset, state=db.STATE_DONE, refreshed=True)
except KeyboardInterrupt as e:
logging.warn('Processing interrupted, restoring cid {} state to CLOSED...'.format(cset['cid']))
db.chgset_processed(cset, state=db.STATE_CLOSED)
raise e
def csets_analyze_periodic_reprocess_open(args, config, db):
# Peridic reprocessing of open changesets
now = datetime.datetime.utcnow().replace(tzinfo=pytz.utc)
dt = now-datetime.timedelta(minutes=config.get('refresh_open_minutes','tracker'))
while True:
cset = db.chgset_start_processing(db.STATE_OPEN, db.STATE_ANALYZING1, before=dt, timestamp='refreshed')
if not cset:
break
try:
logger.info('Reprocess OPEN changeset, cid={}'.format(cset['cid']))
info = cset_process_open(args, config, db, cset)
db.chgset_set_info(cset['cid'], info)
meta = db.chgset_get_meta(cset['cid'])
if meta['open']:
db.chgset_processed(cset, state=db.STATE_OPEN, refreshed=True)
else:
db.chgset_processed(cset, state=db.STATE_CLOSED, refreshed=True)
except KeyboardInterrupt as e:
logging.warn('Processing interrupted, restoring cid {} state to OPEN...'.format(cset['cid']))
db.chgset_processed(cset, state=db.STATE_OPEN)
raise e
def csets_analyze_periodic_reprocess_closed(args, config, db):
# Peridic reprocessing of finished changesets
# Called functions may have longer delays on e.g. when meta is refreshed
now = datetime.datetime.utcnow().replace(tzinfo=pytz.utc)
dt = now-datetime.timedelta(minutes=config.get('refresh_meta_minutes','tracker'))
while True:
cset = db.chgset_start_processing(db.STATE_DONE, db.STATE_REANALYZING, before=dt, timestamp='refreshed')
if not cset:
break
try:
info = cset_reprocess(args, config, db, cset)
db.chgset_set_info(cset['cid'], info)
meta = db.chgset_get_meta(cset['cid'])
db.chgset_processed(cset, state=db.STATE_DONE, refreshed=True)
except KeyboardInterrupt as e:
logging.warn('Processing interrupted, restoring cid {} state to DONE...'.format(cset['cid']))
db.chgset_processed(cset, state=db.STATE_DONE)
raise e
def csets_analyze_drop_old(args, config, db):
# Drop old changesets
now = datetime.datetime.utcnow().replace(tzinfo=pytz.utc)
horizon_s = config.get('horizon_hours','tracker')*3600
dt = now-datetime.timedelta(seconds=horizon_s)
while True:
cset = db.chgset_start_processing([db.STATE_DONE, db.STATE_QUARANTINED], db.STATE_REANALYZING, before=dt, timestamp='updated')
if not cset:
break
logger.info('Dropping cset {} due to age'.format(cset['cid']))
db.chgset_drop(cset['cid'])
return 0
def csets_analyze(args, config, db):
csets_analyze_initial(args, config, db)
csets_analyze_on_close(args, config, db)
csets_analyze_periodic_reprocess_open(args, config, db)
csets_analyze_periodic_reprocess_closed(args, config, db)
csets_analyze_drop_old(args, config, db)
def load_backend(backend, config):
logger.debug("Loading backend {}".format(backend))
return globals()[backend['type']].Backend(config, backend)
def run_backends(args, config, db):
blist = config.get('backends')
if not blist:
logger.warning('No backends specified')
return
backends = []
for backend in blist:
backends.append(load_backend(backend, config))
logger.debug('Loaded {} backends'.format(len(backends)))
initial = True
while True:
for b in backends:
if not initial and 'init_only' in b.cfg and b.cfg['init_only']:
continue
starttime = time.clock()
b.print_state(db)
logger.info('Running backend {} took {:.2f}s'.format(b, time.clock()-starttime))
if not (args and args.track):
break
time.sleep(60)
initial = False
return 0
def worker(args, config, db):
while True:
csets_filter(args, config, db)
csets_analyze(args, config, db)
if not args or not args.track:
break
time.sleep(15)
def supervisor(args, config, db):
if args:
setattr(args, 'timeout', True)
setattr(args, 'cid', None)
if args.metrics:
m_changesets = prometheus_client.Gauge('osmtracker_changeset_cnt',
'Number of changesets in database',
['state'])
while True:
if args and args.metrics:
cset_cnt = dict()
for state in db.all_states:
cset_cnt[state] = 0
for c in db.chgsets_find():
cset_cnt[c['state']] += 1
for state in db.all_states:
m_changesets.labels(state=state).set(cset_cnt[state])
if args:
database.reanalyze(args, db)
if not args or not args.track:
break
time.sleep(60)
def main():
logging.config.fileConfig('logging.conf')
parser = argparse.ArgumentParser(description='OSM Changeset diff filter')
parser.add_argument('-l', dest='log_level', default='INFO',
choices=['DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL'],
help='Set the log level')
parser.add_argument('--configdir', dest='configdir', default='.',
help='Set path to config file')
parser.add_argument('--db', dest='db_url', default='mongodb://localhost:27017/',
help='Set url for database')
parser.add_argument('--metrics', dest='metrics', action='store_true', default=False,
help='Enable metrics through Prometheus client API')
parser.add_argument('--metricsport', dest='metricsport', type=int, default=8000,
help='Port through which to serve metrics')
subparsers = parser.add_subparsers()
parser_diff_fetch = subparsers.add_parser('diff-fetch')
parser_diff_fetch.set_defaults(func=diff_fetch)
parser_diff_fetch.add_argument('--initptr', action='store_true', default=False,
help='Reset OSM minutely diff pointer')
parser_diff_fetch.add_argument('-H', dest='history', help='Define how much history to fetch')
parser_diff_fetch.add_argument('--track', action='store_true', default=False,
help='Fetch current and future minutely diffs')
parser_diff_fetch.add_argument('--simulate', type=int, default=None, help='Simulate changeset observation')
parser_csets_filter = subparsers.add_parser('csets-filter')
parser_csets_filter.set_defaults(func=csets_filter)
parser_csets_analyze = subparsers.add_parser('csets-analyze')
parser_csets_analyze.set_defaults(func=csets_analyze)
parser_run_backends = subparsers.add_parser('run-backends')
parser_run_backends.set_defaults(func=run_backends)
parser_run_backends.add_argument('--track', action='store_true', default=False,
help='Track changes and re-run backends periodically')
parser_worker = subparsers.add_parser('worker')
parser_worker.set_defaults(func=worker)
parser_worker.add_argument('--track', action='store_true', default=False,
help='Track changes and re-run worker tasks periodically')
parser_supervisor = subparsers.add_parser('supervisor')
parser_supervisor.set_defaults(func=supervisor)
parser_supervisor.add_argument('--track', action='store_true', default=False,
help='Track changes and re-run supervisor tasks periodically')
args = parser.parse_args()
logging.getLogger('').setLevel(getattr(logging, args.log_level))
config = configfile.Config()
config.load(path=args.configdir)
if args.metrics:
prometheus_client.start_http_server(args.metricsport)
if args.func==diff_fetch:
dbadm=True
else:
dbadm=False
db = database.DataBase(url=args.db_url, admin=dbadm)
logger.debug('Connected to db: {} (RW={})'.format(db, dbadm))
return args.func(args, config, db)
if __name__ == "__main__":
sys.exit(main())