def test_ts_cache(self):
""" Verify dtss ts-cache functions exposed to python """
with tempfile.TemporaryDirectory() as c_dir:
# setup data to be calculated
utc = Calendar()
d = deltahours(1)
n = 100
t = utc.time(2016, 1, 1)
ta = TimeAxis(t, d, n)
n_ts = 10
store_tsv = TsVector() # something we store at server side
tsv = TsVector(
) # something we put an expression into, refering to stored ts-symbols
for i in range(n_ts):
pts = TimeSeries(
ta,
np.sin(np.linspace(start=0, stop=1.0 * i, num=ta.size())),
point_fx.POINT_AVERAGE_VALUE)
ts_id = shyft_store_url("{0}".format(i))
tsv.append(float(1.0) * TimeSeries(ts_id)
) # make an expression that returns what we store
store_tsv.append(TimeSeries(
ts_id, pts)) # generate a bound pts to store
# add one external ts
tsv.append(TimeSeries(fake_store_url("_any_ts_id_will_do")))
# then start the server
dtss = DtsServer()
dtss.cb = self.dtss_read_callback # rig external callbacks as well.
self.callback_count = 0
self.rd_throws = False
cache_on_write = True
port_no = find_free_port()
host_port = 'localhost:{0}'.format(port_no)
dtss.set_auto_cache(True)
dtss.set_listening_port(port_no)
dtss.set_container(
"test", c_dir
) # notice we set container 'test' to point to c_dir directory
dtss.start_async(
) # the internal shyft time-series will be stored to that container
dts = DtsClient(
host_port,
auto_connect=False) # demonstrate object life-time connection
cs0 = dtss.cache_stats
dts.store_ts(store_tsv,
overwrite_on_write=True,
cache_on_write=cache_on_write)
r1 = dts.evaluate(tsv,
ta.total_period(),
use_ts_cached_read=True,
update_ts_cache=True)
cs1 = dtss.cache_stats
ccs1 = dts.cache_stats # client can also provide cahce-stats
dtss.flush_cache_all() # force the cache empty
dtss.clear_cache_stats()
cs2 = dtss.cache_stats # just to ensure clear did work
r1 = dts.evaluate(
tsv,
ta.total_period(),
use_ts_cached_read=True,
update_ts_cache=True
) # second evaluation, cache is empty, will force read(misses)
cs3 = dtss.cache_stats
r1 = dts.evaluate(
tsv,
ta.total_period(),
use_ts_cached_read=True,
update_ts_cache=True
) # third evaluation, cache is now filled, all hits
cs4 = dtss.cache_stats
# now verify explicit caching performed by the python callback
self.cache_dtss = dtss
self.cache_reads = True
dts.cache_flush() # is the equivalent of
# dtss.flush_cache_all()
# dtss.clear_cache_stats()
# use explicit cache-control instead of global
dtss.set_auto_cache(
False
) # turn off auto caching, we want to test the explicit caching
r1 = dts.evaluate(
tsv,
ta.total_period(),
use_ts_cached_read=True,
update_ts_cache=False
) # evaluation, just misses, but we cache explict the external
cs5 = dtss.cache_stats # ok base line a lots of misses
r1 = dts.evaluate(tsv,
ta.total_period(),
use_ts_cached_read=True,
update_ts_cache=False)
cs6 = dtss.cache_stats # should be one hit here
dts.close() # close connection (will use context manager later)
dtss.clear() # close server
# now the moment of truth:
self.assertEqual(len(r1), len(tsv))
for i in range(n_ts - 1):
self.assertEqual(r1[i].time_axis, store_tsv[i].time_axis)
assert_array_almost_equal(r1[i].values.to_numpy(),
store_tsv[i].values.to_numpy(),
decimal=4)
self.assertEqual(cs0.hits, 0)
self.assertEqual(cs0.misses, 0)
self.assertEqual(cs0.coverage_misses, 0)
self.assertEqual(cs0.id_count, 0)
self.assertEqual(cs0.point_count, 0)
self.assertEqual(cs0.fragment_count, 0)
self.assertEqual(cs1.hits, n_ts)
self.assertEqual(
cs1.misses, 1
) # because we cache on store, so 10 cached, 1 external with miss
self.assertEqual(cs1.coverage_misses, 0)
self.assertEqual(cs1.id_count, n_ts + 1)
self.assertEqual(cs1.point_count, (n_ts + 1) * n)
self.assertEqual(cs1.fragment_count, n_ts + 1)
# verify client side cache_stats
self.assertEqual(ccs1.hits, n_ts)
self.assertEqual(
ccs1.misses, 1
) # because we cache on store, so 10 cached, 1 external with miss
self.assertEqual(ccs1.coverage_misses, 0)
self.assertEqual(ccs1.id_count, n_ts + 1)
self.assertEqual(ccs1.point_count, (n_ts + 1) * n)
self.assertEqual(ccs1.fragment_count, n_ts + 1)
self.assertEqual(cs2.hits, 0)
self.assertEqual(cs2.misses, 0)
self.assertEqual(cs2.coverage_misses, 0)
self.assertEqual(cs2.id_count, 0)
self.assertEqual(cs2.point_count, 0)
self.assertEqual(cs2.fragment_count, 0)
self.assertEqual(cs3.hits, 0)
self.assertEqual(
cs3.misses, n_ts +
1) # because we cache on store, we don't even miss one time
self.assertEqual(cs3.coverage_misses, 0)
self.assertEqual(cs3.id_count, n_ts + 1)
self.assertEqual(cs3.point_count, (n_ts + 1) * n)
self.assertEqual(cs3.fragment_count, n_ts + 1)
self.assertEqual(cs4.hits,
n_ts + 1) # because previous read filled cache
self.assertEqual(cs4.misses,
n_ts + 1) # remembers previous misses.
self.assertEqual(cs4.coverage_misses, 0)
self.assertEqual(cs4.id_count, n_ts + 1)
self.assertEqual(cs4.point_count, (n_ts + 1) * n)
self.assertEqual(cs4.fragment_count, n_ts + 1)
self.assertEqual(cs6.hits, 1) # because previous read filled cache
self.assertEqual(cs6.misses,
n_ts * 2 + 1) # remembers previous misses.
self.assertEqual(cs6.coverage_misses, 0)
self.assertEqual(cs6.id_count, 1)
self.assertEqual(cs6.point_count, 1 * n)
self.assertEqual(cs6.fragment_count, 1)
def test_functionality_hosting_localhost(self):
# setup data to be calculated
utc = Calendar()
d = deltahours(1)
d24 = deltahours(24)
n = 240
n24 = 10
t = utc.time(2016, 1, 1)
ta = TimeAxis(t, d, n)
ta24 = TimeAxis(t, d24, n24)
n_ts = 100
percentile_list = IntVector([0, 35, 50, 65, 100])
tsv = TsVector()
store_tsv = TsVector() # something we store at server side
for i in range(n_ts):
pts = TimeSeries(ta, np.linspace(start=0, stop=1.0, num=ta.size()),
point_fx.POINT_AVERAGE_VALUE)
tsv.append(float(1 + i / 10) * pts)
store_tsv.append(TimeSeries("cache://test/{0}".format(i),
pts)) # generate a bound pts to store
dummy_ts = TimeSeries('dummy://a')
tsv.append(dummy_ts.integral(ta))
self.assertGreater(len(ts_stringify(tsv[0])),
10) # just ensure ts_stringify work on expr.
# then start the server
dtss = DtsServer()
port_no = find_free_port()
host_port = 'localhost:{0}'.format(port_no)
dtss.set_listening_port(port_no)
dtss.cb = self.dtss_read_callback
dtss.find_cb = self.dtss_find_callback
dtss.store_ts_cb = self.dtss_store_callback
dtss.start_async()
dts = DtsClient(StringVector([host_port]), True,
1000) # as number of hosts
# then try something that should work
dts.store_ts(store_tsv)
r1 = dts.evaluate(tsv, ta.total_period())
tsv1x = tsv.inside(-0.5, 0.5)
tsv1x.append(tsv1x[-1].decode(
start_bit=1, n_bits=1)) # just to verify serialization/bind
tsv1x.append(store_tsv[1].derivative())
tsv1x.append(store_tsv[1].pow(
2.0)) # just for verify pow serialization(well, it's a bin-op..)
r1x = dts.evaluate(tsv1x, ta.total_period())
r2 = dts.percentiles(tsv, ta.total_period(), ta24, percentile_list)
r3 = dts.find('netcdf://dummy\.nc/ts\d')
self.rd_throws = True
ex_count = 0
try:
rx = dts.evaluate(tsv, ta.total_period())
except RuntimeError as e:
ex_count = 1
pass
self.rd_throws = True
try:
fx = dts.find('should throw')
except RuntimeError as e:
ex_count += 1
pass
dts.close() # close connection (will use context manager later)
dtss.clear() # close server
self.assertEqual(ex_count, 2)
self.assertEqual(len(r1), len(tsv))
self.assertEqual(self.callback_count, 4)
for i in range(n_ts - 1):
self.assertEqual(r1[i].time_axis, tsv[i].time_axis)
assert_array_almost_equal(r1[i].values.to_numpy(),
tsv[i].values.to_numpy(),
decimal=4)
self.assertEqual(len(r2), len(percentile_list))
dummy_ts.bind(
TimeSeries(ta,
fill_value=1.0,
point_fx=point_fx.POINT_AVERAGE_VALUE))
p2 = tsv.percentiles(ta24, percentile_list)
# r2 = tsv.percentiles(ta24,percentile_list)
for i in range(len(p2)):
self.assertEqual(r2[i].time_axis, p2[i].time_axis)
assert_array_almost_equal(r2[i].values.to_numpy(),
p2[i].values.to_numpy(),
decimal=1)
self.assertEqual(self.find_count, 2)
self.assertEqual(len(r3), 10) # 0..9
for i in range(len(r3)):
self.assertEqual(r3[i], self.ts_infos[i])
self.assertIsNotNone(r1x)
self.assertEqual(1, len(self.stored_tsv))
self.assertEqual(len(store_tsv), len(self.stored_tsv[0]))
for i in range(len(store_tsv)):
self.assertEqual(self.stored_tsv[0][i].ts_id(),
store_tsv[i].ts_id())
