def g_end(text, timer_name=None):
"""Ends a global timer measurement and prinfs it"""
if timer_name is None:
timer_name = 'default'
if timer_name not in timers.keys():
prinw('%s timer_name not started yet.', timer_name)
return -1
sec = time.time() - timers[timer_name]
ms = round(sec * 1000, 2)
prinf('%s ms %s', ms, text)
return ms
def get_utc_now():
"""Returns current UTC time
if global DEBUG variable contains 'simulate_time', the time will be shifted 12 days to the future
for the offline database update triggering
"""
global DEBUG
utc_now = arrow.utcnow()
prinf('%s utc_now', utc_now)
if 'simulate_time' in DEBUG: # simulating different time
utc_now = utc_now.shift(days=+12, hours=+4)
prinf('%s simulated utc_now', utc_now)
return utc_now
def init_currency_symbols(self):
"""Parses currency symbol string (ccode_str) and generates conversion dictionary [currency_symbols]
- if the redis is used, the [currency_symbols] is stored in it
otherwise it uses plain dictionary
"""
if self.r is not None and self.r.csc.initialized == True:
self.currency_symbols = self.r.csc.currency_symbols
self.r.csc.initialized = True
prinf('currency_symbols loaded from redis')
else:
twin_del = ','
dict_del = ':'
self.currency_symbols = {
key: value
for key,value in [key_value.split(dict_del)
for key_value in self.ccode_str.split(twin_del)]
}
prinf('currency_symbols = %s', self.currency_symbols)
if self.r:
self.r.csc.currency_symbols = self.currency_symbols
prinf('currency_symbols saved in redis')
prinf(self.r.csc.currency_symbols)
self.r.csc.initialized = True
def destroy_entities(self, cat_list=None, skip_cat_list=None):
for ent_cat, ent_list in self.entities.items():
delete = False
if cat_list is None and skip_cat_list is None:
delete = True
else:
if cat_list is None:
if ent_cat not in skip_cat_list:
delete = True
else:
if ent_cat in cat_list:
delete = True
if delete:
prinf("Clearing entities of " + ent_cat)
for ent in ent_list:
self.destroy_created_entity(ent, 0)
self.entities[ent_cat].clear()
for r in self.robots:
r.reset_ultrasounds()
def acquire_rates_data(self):
"""Request rates data from the site and processes them
returns True on successful receiving and data processing
"""
prinf('%s params: %s', self.base_url, self.my_params)
g_start()
try:
self.response_data = requests.get(self.base_url, params=self.my_params, timeout=self.timeout)
except OSError:
prinw('%s host not available', self.name)
return False
g_end('request responded')
if not self.response_data:
return False
else:
status_code = self.response_data.status_code
prinf(status_code )
if status_code > 400 :
prinw('%s currency converter site response not found. %s', self.nam, status_code)
return False
elif status_code == 200:
prinf('%s response ok', self.name)
self.update_rates_valid_data()
self.in_ccode = self.response_data.json()[self.strs[jpn.key_in_ccode]]
self.rates = self.response_data.json()[self.strs[jpn.key_output]]
return True
def update_rates_data_if_needed(self):
"""Main decision tree for rates database update from internet"""
if self.valid_database_exists:
# we need only new data (fresher then database)
only_sites_fresher_than_db = True
else:
# no database - just try to get data
only_sites_fresher_than_db = False
# get sites ordered retrospectively from the one with freshest last_updated utc time
sorted_sites = self.get_retrospectively_sorted_sites(
only_sites_fresher_than_db)
if len(sorted_sites) == 0 and self.valid_database_exists:
prinf('No fresher site than database - using sql database rates.')
return
# try to update offline database starting with the freshest
any_success = self.try_update_database_from_sites(sorted_sites)
if not any_success:
prinw(
'Conversion rates data were not available in any cconversion site!'
)
def __init__(
self,
robot,
us_id,
name,
open_angle=None,
distance_range=None,
category="ultrasound",
mass=None,
us_pos=None,
):
self.name = name
self.r = robot
self.us_id = us_id
self.open_angle = open_angle
self.distance_range = distance_range
self.detected = False
self.us_pos = us_pos
prinf("UltrasoundSensor created and entangled: %s %s", us_id, name)
opa = 242
self.colors = {True: (255, 0, 0, opa), False: (0, 255, 0, opa)}
self.v_inds = {"left": 8, "middle": 11, "right": 14}
def _load_sites_from_pickle_(self):
"""Loads exchange rates pandas DataFrame from local pickle
if it does not exist - get the data from
"""
if Path(self._sites_file_).is_file():
with open(self._sites_file_, 'rb') as input:
self.sites = pickle.load(input)
prinf('%s loaded', self._sites_file_)
prinf(self.sites)
else:
self.request_site_from_internet()
prinf(self.sites)
with open(self._sites_file_, 'wb') as output:
pickle.dump(self.sites, output, pickle.HIGHEST_PROTOCOL)
prinf('%s saved', self._sites_file_)
def _init_redis_(self, use_redis):
"""Initialize redis variables and connections
- even if use_redis is True, the first_contact_max_sec test is still used
::WINDOWS NOTE::
the first access to redis has about 1 second time penalty on windows platform. idiocracy
"""
self.use_redis = use_redis
self.first_contact_max_sec = 2.5 # should be at most 300 ms to be better than hdd sql database
self.redis_host = 'localhost'
self.redis_port = 6379
self.r = None
if not self.use_redis:
return
g_start()
redis_db = redis.StrictRedis(host="localhost", port=6379, db=0)
g_end('redis strictRedis initialized')
g_start()
redis_db.set('redis', 'running') # takes ~ 1000 ms on windows
first_contact = g_end('first redis access')
g_start()
redis_running = redis_db.get(
'redis') == 'running' # takes ~ 0.1 ms on windows
g_end('second redis access', 'd')
redis_running = redis_db.info()['loading'] == 0
if first_contact > self.first_contact_max_sec:
# we don't want the redis to actually slow things down on Windows
redis_running = False
if redis_running:
g_start()
self.r = Root(host="localhost", port=6379, db=0)
g_end('redisworks root initialized')
prinf('Redis works root server running.')
def update_rates_valid_data(self):
"""Updates validation utc times from site response cet time"""
date_cet = str(self.response_data.json()[self.strs[jpn.key_date]])
fmt = self.strs[jpn.key_date_format]
date_time = arrow.get(date_cet, fmt)
self.valid_from_utc = self.__class__.stamp_time(date_time)
self.valid_to_utc = self.__class__.stamp_valid_to(self.valid_from_utc)
prinf('%s valid_from_utc', self.valid_from_utc)
prinf('%s valid_to_utc', self.valid_to_utc)
prinf('%s now', arrow.utcnow())
def convert(self, amount, input_cur, output_cur=None):
"""Converts amount of money in <input_cur> currency to <output_cur> currency
amount <float> - Amount which we want to convert
input_cur <str> - Input currency - 3 letters name or currency symbol
[output_cur <str>] - Output currency - 3 letters name or currency symbol
- if omitted - amount converted to all availible currencies
exchange rates are acquired from sql database (get_rates_from_sql)
"""
self.in_amount = amount
self.in_currency = input_cur
self.out_currency = output_cur
if not all([self.in_amount, self.in_currency]):
prine(
'Arguments [amount] and [input_cur] are both required to convert!'
)
return None
prinf('converting in=%s, out=%s', self.in_currency, self.out_currency)
self.convert_to_ccode()
prinf('converted in=%s, out=%s', self.in_code, self.out_code)
if self.in_code == self.out_code:
self.out_amount = self.in_amount
else:
rates = self.get_rates_from_sql(self.in_code, self.out_code)
prinf('rate = %s', rates)
if type(rates) is not dict:
self.out_amount = round(self.in_amount * rates,
self.out_digits)
self.print_json()
else:
self.out_amount = None
rates = {
key: round(self.in_amount * value, self.out_digits)
for key, value in rates.items()
}
self.print_json(rates_dict=rates)
def clear_maps(self):
prinf("Deleting maps in " + self.__svg_map_dir__)
# shutil.rmtree(self.__svg_map_dir__)
files = glob.glob(self.__svg_map_dir__ + "*")
for f in files:
os.remove(f)
