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db_util.py
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db_util.py
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import pandas as pd
import hashlib
import json
import traceback
from sqlalchemy import create_engine
import datetime
class MySqlAdapter:
def __init__(self):
CONFIG = json.loads(open('/home/uwcc-admin/udp_150/hec_server/config.json').read())
if 'MYSQL_HOST' in CONFIG:
MYSQL_HOST = CONFIG['MYSQL_HOST']
if 'MYSQL_USER' in CONFIG:
MYSQL_USER = CONFIG['MYSQL_USER']
if 'MYSQL_DB' in CONFIG:
MYSQL_DB = CONFIG['MYSQL_DB']
if 'MYSQL_PASSWORD' in CONFIG:
MYSQL_PASSWORD = CONFIG['MYSQL_PASSWORD']
connection_string = 'mysql://{}:{}@{}/{}'.format(MYSQL_USER, MYSQL_PASSWORD, MYSQL_HOST, MYSQL_DB)
self.engine = create_engine(connection_string)
self.meta_struct = {
'station': '',
'variable': '',
'unit': '',
'type': '',
'source': '',
'name': ''
}
self.meta_struct_keys = sorted(self.meta_struct.keys())
self.station_struct = {
'id': '',
'stationId': '',
'name': '',
'latitude': '',
'longitude': '',
'resolution': '',
'description': ''
}
self.station_struct_keys = self.station_struct.keys()
self.source_struct = {
'id': '',
'source': '',
'parameters': ''
}
self.source_struct_keys = self.source_struct.keys()
def get_time_series_values(self, event_id, data_from, data_to):
sql = "SELECT `time`,`value` FROM `%s` WHERE `id`=\"%s\" " % ('data', event_id)
sql += "AND `%s`>=\"%s\" " % ('time', data_from)
sql += "AND `%s`<=\"%s\" " % ('time', data_to)
time_series_data = pd.read_sql_query(sql, self.engine)
return time_series_data
def save_time_series_values(self, data_frame):
try:
data_frame.to_sql(name='data', con=self.engine, if_exists='append', index=False)
except Exception:
traceback.print_exc()
def get_event_id(self, meta_data):
event_id = None
m = hashlib.sha256()
hash_data = dict(self.meta_struct)
for i, value in enumerate(self.meta_struct_keys):
hash_data[value] = meta_data[value]
m.update(json.dumps(hash_data, sort_keys=True).encode("ascii"))
possible_id = m.hexdigest()
try:
connection = self.engine.connect()
result = connection.execute("SELECT 1 FROM `run` WHERE `id`='{}'".format(possible_id))
if result.fetchone() is not None:
event_id = possible_id
except Exception:
traceback.print_exc()
finally:
return event_id
def create_event_id(self, meta_data):
hash_data = dict(self.meta_struct)
for i, value in enumerate(self.meta_struct_keys):
hash_data[value] = meta_data[value]
m = hashlib.sha256()
m.update(json.dumps(hash_data, sort_keys=True).encode("ascii"))
event_id = m.hexdigest()
try:
sql_list = [
"SELECT `id` as `station_id` FROM `station` WHERE `name`='{}'".format(meta_data['station']),
"SELECT `id` as `variable_id` FROM `variable` WHERE `variable`='{}'".format(meta_data['variable']),
"SELECT `id` as `unit_id` FROM `unit` WHERE `unit`='{}'".format(meta_data['unit']),
"SELECT `id` as `type_id` FROM `type` WHERE `type`='{}'".format(meta_data['type']),
"SELECT `id` as `source_id` FROM `source` WHERE `source`='{}'".format(meta_data['source'])
]
station_id = self.engine.connect().excute(sql_list[0]).fetchone()
variable_id = self.engine.connect().excute(sql_list[1]).fetchone()
unit_id = self.engine.connect().excute(sql_list[2]).fetchone()
type_id = self.engine.connect().excute(sql_list[3]).fetchone()
source_id = self.engine.connect().excute(sql_list[4]).fetchone()
sql = "INSERT INTO `run` (`id`, `name`, `station`, `variable`, `unit`, `type`, `source`) VALUES ({},{},{},{},{},{},{})"\
.format((event_id,meta_data['name'],station_id,variable_id,unit_id,type_id,source_id))
self.engine.connect().excute(sql)
except Exception as e:
traceback.print_exc()
raise e
finally:
return event_id
def get_type_from_date_time(date_time, type):
if isinstance(date_time, str):
date_time = datetime.datetime.strptime(date_time, '%Y-%m-%d %H:%M:%S')
if type == 'Forecast-0-d':
return 2
elif type == 'Forecast-1-d-after':
return 3
elif type == 'Forecast-2-d-after':
return 3
elif type == 'Forecast-3-d-after':
return 3
elif type == 'Forecast-4-d-after':
return 3
elif type == 'Forecast-5-d-after':
return 3
elif type == 'Forecast-6-d-after':
return 3
elif type == 'Forecast-7-d-after':
return 3
elif type == 'Forecast-8-d-after':
return 3
elif type == 'Forecast-9-d-after':
return 3
def get_type_by_date(run_date, ts_date):
if isinstance(run_date, str):
run_date = datetime.datetime.strptime(run_date, '%Y-%m-%d')
if isinstance(ts_date, str):
ts_date = datetime.datetime.strptime(ts_date, '%Y-%m-%d')
if ts_date == run_date:
return 'Forecast-0-d'
elif ts_date == run_date + datetime.timedelta(days=1):
return 'Forecast-1-d-after'
elif ts_date == run_date + datetime.timedelta(days=2):
return 'Forecast-2-d-after'
elif ts_date == run_date + datetime.timedelta(days=3):
return 'Forecast-3-d-after'
elif ts_date == run_date + datetime.timedelta(days=4):
return 'Forecast-4-d-after'
elif ts_date == run_date + datetime.timedelta(days=5):
return 'Forecast-5-d-after'
elif ts_date == run_date + datetime.timedelta(days=6):
return 'Forecast-6-d-after'
elif ts_date == run_date + datetime.timedelta(days=7):
return 'Forecast-7-d-after'
elif ts_date == run_date + datetime.timedelta(days=8):
return 'Forecast-8-d-after'
elif ts_date == run_date + datetime.timedelta(days=9):
return 'Forecast-9-d-after'
else:
return 'Error'
def save_init_state(self, date, init_data):
try:
sql = 'UPDATE tbl_hec_init SET file = {} WHERE date = \'{}\' '.format(init_data, date)
self.engine.connect().excute(sql)
except Exception as e:
print('save_init_state|Exception:', e)
def get_init_state(self, date):
try:
sql = 'select file from tbl_hec_init WHERE date = \'{}\' '.format(date)
result = self.engine.connect().excute(sql)
for init_data in result:
return init_data
except Exception as e:
print('get_init_state|Exception:', e)
return None