def __init__(self, table, cities):
self.cities = cities
self.prefix = table
self.archive = self.prefix + "_archive"
self.max_wait = 5
if not table_exists(self.archive):
postgres_query(AQICN_TABLE.format(table=self.archive), commit=True)
def __init__(self, table, cities):
self.cities = cities
self.prefix = table
self.archive = self.prefix + "_archive"
self.max_wait = 5
if not table_exists(self.archive):
postgres_query(AQICN_TABLE.format(table=self.archive), commit=True)
def create_indicator_table(self, indicator):
"""
Create a database table for the given water quality indicator
:param indicator: table name for the indicator
:return: None
"""
with open(os.path.join(script_dir,
'resources/create_table.sql')) as sql:
postgres_query(sql.read().format(tablename=indicator), commit=True)
def create_indicator_table(self, indicator):
"""
Create a database table for the given water quality indicator
:param indicator: table name for the indicator
:return: None
"""
with open(os.path.join(script_dir,
'resources/create_table.sql')) as sql:
postgres_query(sql.read().format(tablename=indicator), commit=True)
def update_indicator_table(self, csvfile):
"""
Insert water quality measurement data from a csv file
into the appropriate indicator database table.
:param csvfile: CSV file containing measurement data
:return: None
"""
date_cols = ("ActivityStartDate", "ActivityEndDate")
indicator = csvfile.replace('_Result.csv', '')
if not table_exists(indicator):
self.create_indicator_table(indicator)
with open(os.path.join(self.tmp_dir, csvfile), 'r') as csvin:
csvreader = csv.reader(csvin)
headers = None
for row in csvreader:
if not headers:
headers = ['"{}"'.format(x.replace('/', '_')) for x in row]
else:
insert_sql = 'INSERT INTO "{}" ({}) SELECT \n'.format(
indicator,
','.join(headers)
)
query_format = []
for i, val in enumerate(row):
attribute = headers[i].strip('"')
id_idx = headers.index('"ActivityIdentifier"')
query_format.append("%s")
if attribute in date_cols and val:
time_idx = headers.index(
'"{}_Time"'.format(
attribute.replace("Date", "Time")))
zone_idx = headers.index(
'"{}_TimeZoneCode"'.format(
attribute.replace("Date", "Time")))
time_str = "{} {} {}".format(
val, row[time_idx], row[zone_idx])
row[i] = time_str
else:
if not val or val == '.' or val == 'None':
row[i] = None
insert_sql += '{}'.format(
','.join('{}'.format(x) for x in query_format)) + \
' WHERE NOT EXISTS (SELECT 1 from ' + \
'{} WHERE "ActivityIdentifier" = \'{}\');'.format(
indicator, re.sub('\'{1}', '\'\'', row[id_idx]))
postgres_query(insert_sql, params=tuple(row), commit=True)
purge_old_data(indicator, date_cols[0], self.days_to_keep)
if not table_exists(indicator + self.suffix):
view_sql = 'CREATE OR REPLACE VIEW ' + indicator + self.suffix + \
' AS SELECT i.*, g.wkb_geometry from ' + indicator + ' i ' + \
' INNER JOIN ' + self.station_table + ' g on ' + \
' i."MonitoringLocationIdentifier" = ' + \
' g.monitoringlocationidentifier;'
postgres_query(view_sql, commit=True)
self.post_geoserver_vector(indicator + self.suffix)
def process(self):
if not table_exists(self.prefix):
postgres_query(AQICN_TABLE.format(table=self.prefix), commit=True)
logger.debug("Start %s" % datetime.datetime.now())
if not self.cities:
self.getCities()
logger.debug("There are %s cities" % str(len(self.cities)))
pool = ThreadPool(self.pool_size)
for citylist in self.split_list(self.pool_size):
pool.apply_async(thread_parse, args=(self.prefix, citylist))
pool.close()
pool.join()
def process(self):
if not table_exists(self.prefix):
postgres_query(AQICN_TABLE.format(table=self.prefix), commit=True)
logger.debug("Start %s" % datetime.datetime.now())
if not self.cities:
self.getCities()
logger.debug("There are %s cities" % str(len(self.cities)))
pool = ThreadPool(self.pool_size)
for citylist in self.split_list(self.pool_size):
pool.apply_async(thread_parse, args=(self.prefix, citylist))
pool.close()
pool.join()
def purge_old_data(self):
"""
Remove old data from weekly, monthly, and yearly PostGIS tables
"""
today = datetime.date.today()
last_week = (today - datetime.timedelta(days=7)).strftime("%Y-%m-%d")
last_month = (today - datetime.timedelta(days=30)).strftime("%Y-%m-%d")
last_year = (today - datetime.timedelta(days=365)).strftime("%Y-%m-%d")
for interval, table in zip([last_week, last_month, last_year],
self.tables):
postgres_query(
"DELETE FROM {} where CAST(time as timestamp) < '{}';".format(
table, interval), commit=True)
def purge_old_data(self):
"""
Remove old data from weekly, monthly, and yearly PostGIS tables
"""
today = datetime.date.today()
last_week = (today - datetime.timedelta(days=7)).strftime("%Y-%m-%d")
last_month = (today - datetime.timedelta(days=30)).strftime("%Y-%m-%d")
last_year = (today - datetime.timedelta(days=365)).strftime("%Y-%m-%d")
for interval, table in zip([last_week, last_month, last_year],
self.tables):
postgres_query(
"DELETE FROM {} where CAST(time as timestamp) < '{}';".format(
table, interval), commit=True)
def update_layer(self, layer):
"""
Create or update the MMWR layer in GeoNode
:param layer: Layer to update (weekly or archive)
:return: None
"""
csvfile = "{}.csv".format(self.prefix)
vrt_file = os.path.join(self.tmp_dir, '{}.vrt'.format(self.prefix))
csvt_file = os.path.join(self.tmp_dir, '{}.csvt'.format(self.prefix))
if not os.path.exists(vrt_file):
with open(vrt_file, 'w') as vrt:
vrt.write(
vrt_content.format(name=csvfile.replace('.csv', ''),
csv=os.path.join(self.tmp_dir,
csvfile)))
if not os.path.exists(csvt_file):
with open(csvt_file, 'w') as csvt:
csvt.write(csvt_content)
db = ogc_server_settings.datastore_db
table = '{}_{}'.format(self.prefix, layer).lower()
option = 'overwrite' if layer.lower() == 'weekly' else 'append'
ogr2ogr_exec("-{option} -skipfailures -f PostgreSQL \
\"PG:host={db_host} user={db_user} password={db_pass} \
dbname={db_name}\" {vrt} -nln {table}".format(
db_host=db["HOST"],
db_user=db["USER"],
db_pass=db["PASSWORD"],
db_name=db["NAME"],
vrt="{}".format(vrt_file),
option=option,
table=table))
if not layer_exists(table, ogc_server_settings.server.get('DATASTORE'),
DEFAULT_WORKSPACE):
constraint = 'ALTER TABLE {table} ADD CONSTRAINT ' \
'{table}_unique UNIQUE (place, report_date)'\
.format(table=table)
postgres_query(constraint, commit=True)
self.post_geoserver_vector(table)
if not style_exists(table):
with open(os.path.join(script_dir,
'resources/mmwr.sld')) as sldfile:
sld = sldfile.read().format(layername=table)
self.set_default_style(table, table, sld)
self.update_geonode(table,
title='{} {}'.format(self.base_title, layer),
description=self.description,
extra_keywords=['category:Population'])
self.truncate_gs_cache(table)
def run(self):
if not table_exists(self.prefix):
postgres_query(WHISP_TABLE.format(table=self.prefix), commit=True)
self.import_archive()
self.scrape()
if not layer_exists(self.prefix,
ogc_server_settings.server.get('DATASTORE'),
DEFAULT_WORKSPACE):
self.post_geoserver_vector(self.prefix)
if not style_exists(self.prefix):
with open(os.path.join(script_dir, 'resources/whisp.sld')) as sld:
self.set_default_style(self.prefix, self.prefix, sld.read())
self.update_geonode(self.prefix,
title=self.title,
description=self.description)
self.truncate_gs_cache(self.prefix)
self.cleanup()
def update_layer(self, layer):
"""
Create or update the MMWR layer in GeoNode
:param layer: Layer to update (weekly or archive)
:return: None
"""
csvfile = "{}.csv".format(self.prefix)
vrt_file = os.path.join(self.tmp_dir, '{}.vrt'.format(self.prefix))
csvt_file = os.path.join(self.tmp_dir, '{}.csvt'.format(self.prefix))
if not os.path.exists(vrt_file):
with open(vrt_file, 'w') as vrt:
vrt.write(vrt_content.format(
name=csvfile.replace('.csv', ''),
csv=os.path.join(self.tmp_dir, csvfile)))
if not os.path.exists(csvt_file):
with open(csvt_file, 'w') as csvt:
csvt.write(csvt_content)
db = ogc_server_settings.datastore_db
table = '{}_{}'.format(self.prefix, layer).lower()
option = 'overwrite' if layer.lower() == 'weekly' else 'append'
ogr2ogr_exec("-{option} -skipfailures -f PostgreSQL \
\"PG:host={db_host} user={db_user} password={db_pass} \
dbname={db_name}\" {vrt} -nln {table}".format(
db_host=db["HOST"], db_user=db["USER"],
db_pass=db["PASSWORD"], db_name=db["NAME"],
vrt="{}".format(vrt_file), option=option, table=table))
if not layer_exists(table,
ogc_server_settings.server.get('DATASTORE'),
DEFAULT_WORKSPACE):
constraint = 'ALTER TABLE {table} ADD CONSTRAINT ' \
'{table}_unique UNIQUE (place, report_date)'\
.format(table=table)
postgres_query(constraint, commit=True)
self.post_geoserver_vector(table)
if not style_exists(table):
with open(os.path.join(
script_dir, 'resources/mmwr.sld')) as sldfile:
sld = sldfile.read().format(layername=table)
self.set_default_style(table, table, sld)
self.update_geonode(
table,
title='{} {}'.format(self.base_title, layer),
description=self.description)
self.truncate_gs_cache(table)
def run(self):
if not table_exists(self.prefix):
postgres_query(WHISP_TABLE.format(table=self.prefix), commit=True)
self.import_archive()
self.scrape()
if not layer_exists(self.prefix,
ogc_server_settings.server.get('DATASTORE'),
DEFAULT_WORKSPACE):
self.post_geoserver_vector(self.prefix)
if not style_exists(self.prefix):
with open(os.path.join(script_dir,
'resources/whisp.sld')) as sld:
self.set_default_style(self.prefix, self.prefix, sld.read())
self.update_geonode(self.prefix,
title=self.title,
description=self.description)
self.truncate_gs_cache(self.prefix)
self.cleanup()
def update_station_table(self, csvfile):
"""
Insert data on water quality monitoring stations
from a csv file into the database
:param csvfile: CSV file containing station data
:return: None
"""
vrt_content = ("""<OGRVRTDataSource>
<OGRVRTLayer name="{name}">
<SrcDataSource>{csv}</SrcDataSource>
<GeometryType>wkbPoint</GeometryType>
<LayerSRS>WGS84</LayerSRS>
<GeometryField encoding="PointFromColumns"
x="LongitudeMeasure" y="LatitudeMeasure"/>
</OGRVRTLayer>
</OGRVRTDataSource>
""")
station_table = self.station_table
needs_index = not table_exists(station_table)
db = ogc_server_settings.datastore_db
vrt_file = os.path.join(self.tmp_dir, csvfile.replace('.csv', '.vrt'))
csv_name = os.path.basename(csvfile).replace(".csv", "")
if not os.path.exists(vrt_file):
with open(vrt_file, 'w') as vrt:
vrt.write(
vrt_content.format(name=csv_name,
csv=os.path.join(self.tmp_dir,
csvfile)))
ogr2ogr_exec("-append -skipfailures -f PostgreSQL \
\"PG:host={db_host} user={db_user} password={db_pass} \
dbname={db_name}\" {vrt} -nln {table}".format(
db_host=db["HOST"],
db_user=db["USER"],
db_pass=db["PASSWORD"],
db_name=db["NAME"],
vrt="{}".format(vrt_file),
table=station_table))
if needs_index:
sql = 'ALTER TABLE {} '.format(station_table) + \
'ADD CONSTRAINT monitoringlocationidentifier_key ' + \
'UNIQUE (monitoringlocationidentifier)'
logger.debug(sql)
postgres_query(sql, commit=True)
def update_station_table(self, csvfile):
"""
Insert data on water quality monitoring stations
from a csv file into the database
:param csvfile: CSV file containing station data
:return: None
"""
vrt_content = (
"""<OGRVRTDataSource>
<OGRVRTLayer name="{name}">
<SrcDataSource>{csv}</SrcDataSource>
<GeometryType>wkbPoint</GeometryType>
<LayerSRS>WGS84</LayerSRS>
<GeometryField encoding="PointFromColumns"
x="LongitudeMeasure" y="LatitudeMeasure"/>
</OGRVRTLayer>
</OGRVRTDataSource>
""")
station_table = self.station_table
needs_index = not table_exists(station_table)
db = ogc_server_settings.datastore_db
vrt_file = os.path.join(self.tmp_dir, csvfile.replace('.csv', '.vrt'))
csv_name = os.path.basename(csvfile).replace(".csv", "")
if not os.path.exists(vrt_file):
with open(vrt_file, 'w') as vrt:
vrt.write(vrt_content.format(
name=csv_name, csv=os.path.join(self.tmp_dir, csvfile)))
ogr2ogr_exec("-append -skipfailures -f PostgreSQL \
\"PG:host={db_host} user={db_user} password={db_pass} \
dbname={db_name}\" {vrt} -nln {table}".format(
db_host=db["HOST"], db_user=db["USER"], db_pass=db["PASSWORD"],
db_name=db["NAME"], vrt="{}".format(vrt_file), table=station_table))
if needs_index:
sql = 'ALTER TABLE {} '.format(station_table) + \
'ADD CONSTRAINT monitoringlocationidentifier_key ' + \
'UNIQUE (monitoringlocationidentifier)'
logger.debug(sql)
postgres_query(sql, commit=True)
def save_data(self, city):
for item in city['data']:
if city['data'][item] == '-':
city['data'][item] = 'NULL'
measurements = ','.join(x[4:] for x in city['data'].keys())
values = ','.join(
[x for x in city['data'].values()])
city_name = unicode(city['city'])
kv = ','.join(['{} = {}'.format(k, v) for k, v in zip(
[x[4:] for x in city['data'].keys()],
[x for x in city['data'].values()]
)])
sql_str = unicode(AQICN_SQL.format(
table=self.prefix,
time=city['dateTime'].strftime('%Y-%m-%d %H:%M:%S'),
lat=city['g'][0],
lng=city['g'][1],
city=city_name.replace('\'', '\'\''),
keys=measurements,
val=values,
kv=kv,
cntry=city['country']
))
postgres_query(sql_str, commit=True)
def save_data(self, city):
for item in city['data']:
if city['data'][item] == '-':
city['data'][item] = 'NULL'
measurements = ','.join(x[4:] for x in city['data'].keys())
values = ','.join(
[x for x in city['data'].values()])
city_name = unicode(city['city'])
kv = ','.join(['{} = {}'.format(k, v) for k, v in zip(
[x[4:] for x in city['data'].keys()],
[x for x in city['data'].values()]
)])
sql_str = unicode(AQICN_SQL.format(
table=self.prefix,
time=city['dateTime'].strftime('%Y-%m-%d %H:%M:%S'),
lat=city['g'][0],
lng=city['g'][1],
city=city_name.replace('\'', '\'\''),
keys=measurements,
val=values,
kv=kv,
cntry=city['country']
))
postgres_query(sql_str, commit=True)
def update_indicator_table(self, csvfile):
"""
Insert water quality measurement data from a csv file
into the appropriate indicator database table.
:param csvfile: CSV file containing measurement data
:return: None
"""
date_cols = ("ActivityStartDate", "ActivityEndDate")
indicator = csvfile.replace('_Result.csv', '')
if not table_exists(indicator):
self.create_indicator_table(indicator)
with open(os.path.join(self.tmp_dir, csvfile), 'r') as csvin:
csvreader = csv.reader(csvin)
headers = None
for row in csvreader:
if not headers:
headers = ['"{}"'.format(x.replace('/', '_')) for x in row]
else:
insert_sql = 'INSERT INTO "{}" ({}) SELECT \n'.format(
indicator,
','.join(headers)
)
query_format = []
for i, val in enumerate(row):
attribute = headers[i].strip('"')
id_idx = headers.index('"ActivityIdentifier"')
query_format.append("%s")
if attribute in date_cols and val:
time_idx = headers.index(
'"{}_Time"'.format(
attribute.replace("Date", "Time")))
zone_idx = headers.index(
'"{}_TimeZoneCode"'.format(
attribute.replace("Date", "Time")))
time_str = "{} {} {}".format(
val, row[time_idx], row[zone_idx])
row[i] = time_str
else:
if not val or val == '.' or val == 'None':
row[i] = None
insert_sql += '{}'.format(
','.join('{}'.format(x) for x in query_format)) + \
' WHERE NOT EXISTS (SELECT 1 from ' + \
'{} WHERE "ActivityIdentifier" = \'{}\');'.format(
indicator, re.sub('\'{1}', '\'\'', row[id_idx]))
try:
postgres_query(
insert_sql, params=tuple(row), commit=True)
except Exception as e:
logger.error("The query failed: {} with parameters: {}".
format(insert_sql, row))
logger.error(traceback.format_exc())
if not self.skip_errors:
raise e
purge_old_data(indicator, date_cols[0], self.days_to_keep)
if not table_exists(indicator + self.suffix):
view_sql = 'CREATE OR REPLACE VIEW ' + indicator + self.suffix + \
' AS SELECT i.*, g.wkb_geometry from ' + indicator + ' i ' + \
' INNER JOIN ' + self.station_table + ' g on ' + \
' i."MonitoringLocationIdentifier" = ' + \
' g.monitoringlocationidentifier;'
postgres_query(view_sql, commit=True)
self.post_geoserver_vector(indicator + self.suffix)
def insert_row(self, data):
postgres_query(WHISP_SQL.format(
table=self.prefix, geom=data['the_geom']), params=data, commit=True)
def insert_row(self, data):
postgres_query(WHISP_SQL.format(table=self.prefix,
geom=data['the_geom']),
params=data,
commit=True)
