def create_states_and_prep_localities(settings):
start_time = datetime.now()
sql_list = [
geoscape.open_sql_file("01a-create-states-from-sa4s.sql",
settings).format(settings['srid']),
geoscape.open_sql_file("01b-prep-locality-boundaries.sql",
settings).format(settings['srid'])
]
geoscape.multiprocess_list("sql", sql_list, settings, logger)
logger.info(
"\t- Step 1 of 8 : state table created & localities prepped : {0}".
format(datetime.now() - start_time))
def prep_admin_bdys(pg_cur):
# Step 3 of 4 : create admin bdy tables read to be used
start_time = datetime.now()
# create tables using multiprocessing - using flag in file to split file up into sets of statements
sql_list = geoscape.open_sql_file(
"02-02a-prep-admin-bdys-tables.sql").split("-- # --")
sql_list = sql_list + geoscape.open_sql_file(
"02-02b-prep-census-2011-bdys-tables.sql").split("-- # --")
sql_list = sql_list + geoscape.open_sql_file(
"02-02c-prep-census-2016-bdys-tables.sql").split("-- # --")
sql_list = sql_list + geoscape.open_sql_file(
"02-02d-prep-census-2021-bdys-tables.sql").split("-- # --")
# # Account for bdys that are not in states to load - not yet working
# for sql in sql_list:
# if settings.states_to_load == ["OT"] and ".commonwealth_electorates " in sql:
# sql_list.remove(sql)
#
# if settings.states_to_load == ["ACT"] and ".local_government_areas " in sql:
# sql_list.remove(sql)
#
# logger.info(settings.states_to_load
#
# if not ("NT" in settings.states_to_load or "SA" in settings.states_to_load
# or "VIC" in settings.states_to_load or "WA" in settings.states_to_load) \
# and ".local_government_wards " in sql:
# sql_list.remove(sql)
#
# if settings.states_to_load == ["OT"] and ".state_lower_house_electorates " in sql:
# sql_list.remove(sql)
#
# if not ("TAS" in settings.states_to_load or "VIC" in settings.states_to_load
# or "WA" in settings.states_to_load) and ".state_upper_house_electorates " in sql:
# sql_list.remove(sql)
geoscape.multiprocess_list("sql", sql_list, logger)
# Special case - remove custom outback bdy if South Australia not requested
if "SA" not in settings.states_to_load:
pg_cur.execute(
geoscape.prep_sql(
"DELETE FROM admin_bdys.locality_bdys WHERE locality_pid = 'SA999999'"
))
pg_cur.execute(
geoscape.prep_sql("VACUUM ANALYZE admin_bdys.locality_bdys"))
logger.info("\t- Step 2 of 3 : admin boundaries prepped : {0}".format(
datetime.now() - start_time))
def create_display_postcodes(pg_cur, settings):
start_time = datetime.now()
pg_cur.execute(
geoscape.open_sql_file("06-create-display-postcodes.sql",
settings).format(settings['srid']))
logger.info("\t- Step 6 of 8 : display postcodes created : {0}".format(
datetime.now() - start_time))
def create_admin_bdys_for_analysis():
# Step 3 of 3 : create admin bdy tables optimised for spatial analysis
start_time = datetime.now()
if settings.st_subdivide_supported:
template_sql = geoscape.open_sql_file(
"02-03-create-admin-bdy-analysis-tables_template.sql")
sql_list = list()
for table in settings.admin_bdy_list:
sql = template_sql.format(table[0], table[1])
if table[
0] == "locality_bdys": # special case, need to change schema name
# sql = sql.replace(settings.raw_admin_bdys_schema, settings.admin_bdys_schema)
sql = sql.replace("name", "locality_name")
# add postcodes
sql = sql.replace(
"locality_name text NOT NULL,",
"old_locality_pid text NULL, locality_name text NOT NULL, postcode text NULL,"
)
sql = sql.replace(
"locality_name,",
"old_locality_pid, locality_name, postcode,")
sql_list.append(sql)
geoscape.multiprocess_list("sql", sql_list, logger)
logger.info(
"\t- Step 3 of 3 : admin boundaries for analysis created : {0}".
format(datetime.now() - start_time))
else:
logger.warning(
"\t- Step 3 of 3 : admin boundaries for analysis NOT created - "
"requires PostGIS 2.2+ with GEOS 3.5.0+")
def populate_raw_gnaf(pg_cur):
# Step 4 of 7 : load raw gnaf authority & state tables
start_time = datetime.now()
# authority code file list
sql_list = get_raw_gnaf_files("authority_code")
# add state file lists
for state in settings.states_to_load:
logger.info(f"\t\t- Loading state {state}")
sql_list.extend(get_raw_gnaf_files(state))
# are there any files to load?
if len(sql_list) == 0:
logger.fatal(
"No raw GNAF PSV files found\nACTION: Check your 'gnaf_network_directory' path"
)
logger.fatal("\t- Step 4 of 7 : table populate FAILED!")
else:
# load all PSV files using multiprocessing
geoscape.multiprocess_list("sql", sql_list, logger)
# fix missing geocodes (added due to missing data in 202202 release)
sql = geoscape.open_sql_file("01-04-raw-gnaf-fix-missing-geocodes.sql")
pg_cur.execute(sql)
logger.info(
f"\t- Step 4 of 7 : tables populated : {datetime.now() - start_time}"
)
logger.info("\t\t- fixed missing geocodes")
def create_raw_gnaf_tables(pg_cur):
# Step 3 of 7 : create tables
start_time = datetime.now()
# prep create table sql scripts (note: file doesn't contain any schema prefixes on table names)
sql = geoscape.open_sql_file("01-03-raw-gnaf-create-tables.sql")
# set search path
if settings.raw_gnaf_schema != "public":
pg_cur.execute("SET search_path = {0}".format(
settings.raw_gnaf_schema, ))
# alter create table script to run on chosen schema
sql = sql.replace(
"SET search_path = public",
"SET search_path = {0}".format(settings.raw_gnaf_schema, ))
# set tables to unlogged to speed up the load? (if requested)
# -- they'll have to be rebuilt using this script again after a system crash --
if settings.unlogged_tables:
sql = sql.replace("CREATE TABLE ", "CREATE UNLOGGED TABLE ")
unlogged_string = "UNLOGGED "
else:
unlogged_string = ""
# create raw gnaf tables
pg_cur.execute(sql)
logger.info("\t- Step 3 of 7 : {1}tables created : {0}".format(
datetime.now() - start_time, unlogged_string))
def qa_display_localities(pg_cur, settings):
logger.info("\t- Step 8 of 8 : Start QA")
start_time = datetime.now()
pg_cur.execute(
geoscape.prep_sql(
"SELECT locality_pid, locality_name, coalesce(postcode, '') as postcode, state, "
"address_count, street_count "
"FROM admin_bdys.locality_bdys_display WHERE NOT ST_IsValid(geom);",
settings))
display_qa_results("Invalid Geometries", pg_cur)
pg_cur.execute(
geoscape.prep_sql(
"SELECT locality_pid, locality_name, coalesce(postcode, '') as postcode, state, "
"address_count, street_count "
"FROM admin_bdys.locality_bdys_display WHERE ST_IsEmpty(geom);",
settings))
display_qa_results("Empty Geometries", pg_cur)
pg_cur.execute(
geoscape.open_sql_file("08-qa-display-localities.sql", settings))
display_qa_results("Dropped Localities", pg_cur)
logger.info("\t- Step 8 of 8 : display localities qa'd : {0}".format(
datetime.now() - start_time))
def finalise_display_localities(pg_cur, settings):
start_time = datetime.now()
pg_cur.execute(
geoscape.open_sql_file("05-finalise-display-localities.sql",
settings).format(settings['srid']))
logger.info("\t- Step 5 of 8 : display localities finalised : {0}".format(
datetime.now() - start_time))
def verify_locality_polygons(pg_cur, settings):
start_time = datetime.now()
pg_cur.execute(
geoscape.open_sql_file("03a-verify-split-polygons.sql",
settings).format(settings['srid']))
pg_cur.execute(
geoscape.open_sql_file("03b-load-messy-centroids.sql", settings))
# convert messy centroids to GDA2020 if required
if settings['srid'] == 7844:
pg_cur.execute(
geoscape.open_sql_file("03c-load-messy-centroids-gda2020.sql",
settings))
logger.info(
"\t- Step 3 of 8 : messy locality polygons verified : {0}".format(
datetime.now() - start_time))
def get_locality_state_border_gaps(pg_cur, settings):
start_time = datetime.now()
sql = geoscape.open_sql_file("04-create-holes-along-borders.sql", settings)
sql_list = geoscape.split_sql_into_list(
pg_cur, sql, settings['admin_bdys_schema'],
"temp_state_border_buffers_subdivided", "ste", "new_gid", settings,
logger)
geoscape.multiprocess_list("sql", sql_list, settings, logger)
logger.info("\t- Step 4 of 8 : locality holes created : {0}".format(
datetime.now() - start_time))
def get_split_localities(pg_cur, settings):
start_time = datetime.now()
sql = geoscape.open_sql_file("02-split-localities-by-state-borders.sql",
settings)
sql_list = geoscape.split_sql_into_list(pg_cur, sql,
settings['admin_bdys_schema'],
"temp_localities", "loc", "gid",
settings, logger)
geoscape.multiprocess_list("sql", sql_list, settings, logger)
logger.info("\t- Step 2 of 8 : localities split by state : {0}".format(
datetime.now() - start_time))
def index_raw_gnaf(pg_cur):
# Step 5 of 7 : create indexes
start_time = datetime.now()
raw_sql_list = geoscape.open_sql_file(
"01-05-raw-gnaf-create-indexes.sql").split("\n")
sql_list = []
for sql in raw_sql_list:
if sql[0:2] != "--" and sql[0:2] != "":
sql_list.append(sql)
geoscape.multiprocess_list("sql", sql_list, logger)
# create distinct new & old locality pid lookup table
pg_cur.execute(
geoscape.open_sql_file(
"01-05b-create-distinct-locality-pid-linkage-table.sql"))
logger.info(
"\t- Step 5 of 7 : indexes created: {0}".format(datetime.now() -
start_time))
def drop_tables_and_vacuum_db(pg_cur):
# Step 1 of 7 : drop tables
start_time = datetime.now()
pg_cur.execute(geoscape.open_sql_file("01-01-drop-tables.sql"))
logger.info(
f"\t- Step 1 of 7 : tables dropped : {datetime.now() - start_time}")
# Step 2 of 7 : vacuum database (if requested)
start_time = datetime.now()
if settings.vacuum_db:
pg_cur.execute("VACUUM")
logger.info(
f"\t- Step 2 of 7 : database vacuumed : {datetime.now() - start_time}"
)
else:
logger.info("\t- Step 2 of 7 : database NOT vacuumed")
def create_primary_foreign_keys():
start_time = datetime.now()
key_sql = geoscape.open_sql_file(
"01-06-raw-gnaf-create-primary-foreign-keys.sql")
key_sql_list = key_sql.split("--")
sql_list = []
for sql in key_sql_list:
sql = sql.strip()
if sql[0:6] == "ALTER ":
# add schema to tables names, in case raw gnaf schema not the default
sql = sql.replace(f"ALTER TABLE ONLY ",
"ALTER TABLE ONLY {settings.raw_gnaf_schema}.")
sql_list.append(sql)
# run queries in separate processes
geoscape.multiprocess_list("sql", sql_list, logger)
logger.info(
f"\t- Step 6 of 7 : primary & foreign keys created : {datetime.now() - start_time}"
)
def load_raw_admin_boundaries(pg_cur):
start_time = datetime.now()
# drop existing views
pg_cur.execute(geoscape.open_sql_file("02-01-drop-admin-bdy-views.sql"))
# add authority code tables
settings.states_to_load.extend(["authority_code"])
# get file list
table_list = list()
create_list = list()
append_list = list()
for state in settings.states_to_load:
state = state.lower()
# get a dictionary of Shapefiles and DBFs matching the state
for root, dirs, files in os.walk(settings.admin_bdys_local_directory):
for file_name in files:
if file_name.lower().startswith(state + "_"):
if file_name.lower().endswith(
".shp") or file_name.lower().endswith("_shp.dbf"):
file_dict = dict()
# list .shp files and standalone .dbf files - ignore the rest
if file_name.lower().endswith(".shp"):
file_dict["spatial"] = True
file_dict["file_path"] = os.path.join(
root, file_name)
elif file_name.lower(
).endswith(".dbf") and not file_name.lower().endswith(
"_polygon_shp.dbf") and not file_name.lower(
).endswith("_point_shp.dbf"):
file_dict["spatial"] = False
file_dict["file_path"] = os.path.join(
root, file_name)
if file_dict.get("file_path") is not None:
file_dict["pg_table"] = file_name.lower().replace(state + "_", "aus_", 1)\
.replace(".dbf", "").replace(".shp", "").replace("_shp", "")
file_dict[
"pg_schema"] = settings.raw_admin_bdys_schema
# set command line parameters depending on whether this is the 1st state
table_list_add = False
if file_dict["pg_table"] not in table_list:
table_list_add = True
file_dict["delete_table"] = True
else:
file_dict["delete_table"] = False
# if locality file from Towns folder: don't add - it's a duplicate
if "town points" not in file_dict[
"file_path"].lower():
if table_list_add:
table_list.append(file_dict["pg_table"])
create_list.append(file_dict)
else:
# # don't add duplicates if more than one Authority Code file per boundary type
# if "_aut_" not in file_name.lower():
append_list.append(file_dict)
else:
if not file_dict["file_path"].lower().endswith(
"_locality_shp.dbf"):
if table_list_add:
table_list.append(
file_dict["pg_table"])
create_list.append(file_dict)
else:
# # don't add duplicates if more than one Authority Code file per boundary type
# if "_aut_" not in file_name.lower():
append_list.append(file_dict)
# [print(table) for table in create_list]
# print("---------------------------------------------------------------------------------------")
# [print(table) for table in append_list]
# are there any files to load?
if len(create_list) == 0:
logger.fatal(
"No admin boundary files found\nACTION: Check your 'admin-bdys-path' argument"
)
else:
# load files in separate processes
geoscape.multiprocess_shapefile_load(create_list, logger)
# Run the appends one at a time (Can't multiprocess as sets of parallel INSERTs can cause database deadlocks)
for shp in append_list:
result = geoscape.import_shapefile_to_postgres(
shp["file_path"], shp["pg_table"], shp["pg_schema"],
shp["delete_table"], shp["spatial"])
if result != "SUCCESS":
logger.warning(result)
logger.info(
"\t- Step 1 of 3 : raw admin boundaries loaded : {0}".format(
datetime.now() - start_time))
def main():
full_start_time = datetime.now()
# set command line arguments
args = set_arguments()
# get settings from arguments
settings = get_settings(args)
# connect to Postgres
try:
pg_conn = psycopg2.connect(settings['pg_connect_string'])
except psycopg2.Error:
logger.fatal(
"Unable to connect to database\nACTION: Check your Postgres parameters and/or database security"
)
return False
pg_conn.autocommit = True
pg_cur = pg_conn.cursor()
# log postgres/postgis versions being used
geoscape.check_postgis_version(pg_cur, settings, logger)
logger.info("")
# get SRID of locality boundaries
sql = geoscape.prep_sql(
f"select Find_SRID('{settings['admin_bdys_schema']}', 'locality_bdys', 'geom')",
settings)
pg_cur.execute(sql)
settings['srid'] = int(pg_cur.fetchone()[0])
if settings['srid'] == 4283:
logger.info(
f"Locality boundary coordinate system is EPSG:{settings['srid']} (GDA94)"
)
elif settings['srid'] == 7844:
logger.info(
f"Locality boundary coordinate system is EPSG:{settings['srid']} (GDA2020)"
)
else:
logger.fatal(
"Invalid coordinate system (SRID) - EXITING!\nValid values are 4283 (GDA94) and 7844 (GDA2020)"
)
exit()
# add Postgres functions to clean out non-polygon geometries from GeometryCollections
pg_cur.execute(
geoscape.open_sql_file("create-polygon-intersection-function.sql",
settings).format(settings['srid']))
pg_cur.execute(
geoscape.open_sql_file("create-multi-linestring-split-function.sql",
settings))
# let's build some clean localities!
logger.info("")
create_states_and_prep_localities(settings)
get_split_localities(pg_cur, settings)
verify_locality_polygons(pg_cur, settings)
get_locality_state_border_gaps(pg_cur, settings)
finalise_display_localities(pg_cur, settings)
create_display_postcodes(pg_cur, settings)
export_display_localities(pg_cur, settings)
qa_display_localities(pg_cur, settings)
pg_cur.close()
pg_conn.close()
logger.info("Total time : {0}".format(datetime.now() - full_start_time))
return True
def create_reference_tables(pg_cur):
# set postgres search path back to the default
pg_cur.execute("SET search_path = public, pg_catalog")
# Step 1 of 14 : create reference tables
start_time = datetime.now()
pg_cur.execute(geoscape.open_sql_file("03-01-reference-create-tables.sql"))
logger.info("\t- Step 1 of 14 : create reference tables : {0}".format(
datetime.now() - start_time))
# Step 2 of 14 : populate localities
start_time = datetime.now()
pg_cur.execute(
geoscape.open_sql_file("03-02-reference-populate-localities.sql"))
logger.info("\t- Step 2 of 14 : localities populated : {0}".format(
datetime.now() - start_time))
# Step 3 of 14 : populate locality aliases
start_time = datetime.now()
pg_cur.execute(
geoscape.open_sql_file(
"03-03-reference-populate-locality-aliases.sql"))
logger.info("\t- Step 3 of 14 : locality aliases populated : {0}".format(
datetime.now() - start_time))
# Step 4 of 14 : populate locality neighbours
start_time = datetime.now()
pg_cur.execute(
geoscape.open_sql_file(
"03-04-reference-populate-locality-neighbours.sql"))
logger.info(
"\t- Step 4 of 14 : locality neighbours populated : {0}".format(
datetime.now() - start_time))
# Step 5 of 14 : populate streets
start_time = datetime.now()
pg_cur.execute(
geoscape.open_sql_file("03-05-reference-populate-streets.sql"))
logger.info(
"\t- Step 5 of 14 : streets populated : {0}".format(datetime.now() -
start_time))
# Step 6 of 14 : populate street aliases
start_time = datetime.now()
pg_cur.execute(
geoscape.open_sql_file("03-06-reference-populate-street-aliases.sql"))
logger.info("\t- Step 6 of 14 : street aliases populated : {0}".format(
datetime.now() - start_time))
# Step 7 of 14 : populate addresses, using multiprocessing
start_time = datetime.now()
sql = geoscape.open_sql_file("03-07-reference-populate-addresses-1.sql")
sql_list = geoscape.split_sql_into_list(pg_cur, sql, settings.gnaf_schema,
"streets", "str", "gid", logger)
if sql_list is not None:
geoscape.multiprocess_list("sql", sql_list, logger)
pg_cur.execute(geoscape.prep_sql("ANALYZE gnaf.temp_addresses;"))
logger.info(
"\t- Step 7 of 14 : addresses populated : {0}".format(datetime.now() -
start_time))
# Step 8 of 14 : populate principal alias lookup
start_time = datetime.now()
pg_cur.execute(
geoscape.open_sql_file(
"03-08-reference-populate-address-alias-lookup.sql"))
logger.info(
"\t- Step 8 of 14 : principal alias lookup populated : {0}".format(
datetime.now() - start_time))
# Step 9 of 14 : populate primary secondary lookup
start_time = datetime.now()
pg_cur.execute(
geoscape.open_sql_file(
"03-09-reference-populate-address-secondary-lookup.sql"))
pg_cur.execute(
geoscape.prep_sql("VACUUM ANALYSE gnaf.address_secondary_lookup"))
logger.info(
"\t- Step 9 of 14 : primary secondary lookup populated : {0}".format(
datetime.now() - start_time))
# Step 10 of 14 : split the Melbourne locality into its 2 postcodes (3000, 3004)
start_time = datetime.now()
pg_cur.execute(
geoscape.open_sql_file("03-10-reference-split-melbourne.sql"))
logger.info(
"\t- Step 10 of 14 : Melbourne split : {0}".format(datetime.now() -
start_time))
# Step 11 of 14 : finalise localities assigned to streets and addresses
start_time = datetime.now()
pg_cur.execute(
geoscape.open_sql_file("03-11-reference-finalise-localities.sql"))
logger.info("\t- Step 11 of 14 : localities finalised : {0}".format(
datetime.now() - start_time))
# Step 12 of 14 : finalise addresses, using multiprocessing
start_time = datetime.now()
sql = geoscape.open_sql_file("03-12-reference-populate-addresses-2.sql")
sql_list = geoscape.split_sql_into_list(pg_cur, sql, settings.gnaf_schema,
"localities", "loc", "gid", logger)
if sql_list is not None:
geoscape.multiprocess_list("sql", sql_list, logger)
# turf the temp address table
pg_cur.execute(
geoscape.prep_sql("DROP TABLE IF EXISTS gnaf.temp_addresses"))
logger.info(
"\t- Step 12 of 14 : addresses finalised : {0}".format(datetime.now() -
start_time))
# Step 13 of 14 : create almost correct postcode boundaries by aggregating localities, using multiprocessing
start_time = datetime.now()
sql = geoscape.open_sql_file("03-13-reference-derived-postcode-bdys.sql")
sql_list = []
for state in settings.states_to_load:
state_sql = sql.replace("GROUP BY ",
"WHERE state = '{0}' GROUP BY ".format(state))
sql_list.append(state_sql)
geoscape.multiprocess_list("sql", sql_list, logger)
# create analysis table?
if settings.st_subdivide_supported:
pg_cur.execute(
geoscape.open_sql_file(
"03-13a-create-postcode-analysis-table.sql"))
logger.info("\t- Step 13 of 14 : postcode boundaries created : {0}".format(
datetime.now() - start_time))
# Step 14 of 14 : create indexes, primary and foreign keys, using multiprocessing
start_time = datetime.now()
raw_sql_list = geoscape.open_sql_file(
"03-14-reference-create-indexes.sql").split("\n")
sql_list = []
for sql in raw_sql_list:
if sql[0:2] != "--" and sql[0:2] != "":
sql_list.append(sql)
geoscape.multiprocess_list("sql", sql_list, logger)
logger.info(
"\t- Step 14 of 14 : create primary & foreign keys and indexes : {0}".
format(datetime.now() - start_time))
def boundary_tag_gnaf(pg_cur):
# create bdy table list
# remove localities, postcodes and states as these IDs are already assigned to GNAF addresses
table_list = list()
for table in settings.admin_bdy_list:
if table[0] not in ["locality_bdys", "postcode_bdys", "state_bdys"]:
# if no analysis tables created - use the full tables instead of the subdivided ones
# WARNING: this can add hours to the processing
if settings.st_subdivide_supported:
table_name = "{}_analysis".format(table[0], )
else:
table_name = table[0]
table_list.append([table_name, table[1]])
# create bdy tagged address tables
for address_table in ["address_principal", "address_alias"]:
pg_cur.execute(
"DROP TABLE IF EXISTS {}.{}_admin_boundaries CASCADE".format(
settings.gnaf_schema, address_table))
create_table_list = list()
create_table_list.append(
"CREATE TABLE {}.{}_admin_boundaries (gid serial NOT NULL,"
"gnaf_pid text NOT NULL,"
# "alias_principal character(1) NOT NULL,"
"locality_pid text NOT NULL,"
"old_locality_pid text NULL,"
"locality_name text NOT NULL,"
"postcode text,"
"state text NOT NULL".format(settings.gnaf_schema, address_table))
for table in table_list:
pid_field = table[1]
name_field = pid_field.replace("_pid", "_name")
create_table_list.append(", {} text, {} text".format(
pid_field, name_field))
create_table_list.append(
") WITH (OIDS=FALSE);ALTER TABLE {}.{}_admin_boundaries OWNER TO {}"
.format(settings.gnaf_schema, address_table, settings.pg_user))
pg_cur.execute("".join(create_table_list))
# Step 1 of 7 : tag gnaf addresses with admin boundary IDs, using multiprocessing
start_time = datetime.now()
# create temp tables
template_sql = geoscape.open_sql_file(
"04-01a-bdy-tag-create-table-template.sql")
for table in table_list:
pg_cur.execute(template_sql.format(table[0], ))
# create temp tables of bdy tagged gnaf_pids
template_sql = geoscape.open_sql_file("04-01b-bdy-tag-template.sql")
sql_list = list()
for table in table_list:
sql = template_sql.format(table[0], table[1])
short_sql_list = geoscape.split_sql_into_list(
pg_cur, sql, settings.admin_bdys_schema, table[0], "bdys", "gid",
logger)
if short_sql_list is not None:
sql_list.extend(short_sql_list)
# logger.info("\n".join(sql_list))
if sql_list is not None:
geoscape.multiprocess_list("sql", sql_list, logger)
logger.info(
"\t- Step 1 of 7 : principal addresses tagged with admin boundary IDs: {}"
.format(datetime.now() - start_time, ))
start_time = datetime.now()
# Step 2 of 7 : delete invalid matches, create indexes and analyse tables
sql_list = list()
for table in table_list:
sql = "DELETE FROM {0}.temp_{1}_tags WHERE gnaf_state <> bdy_state AND gnaf_state <> 'OT';" \
"CREATE INDEX temp_{1}_tags_gnaf_pid_idx ON {0}.temp_{1}_tags USING btree(gnaf_pid);" \
"ANALYZE {0}.temp_{1}_tags".format(settings.gnaf_schema, table[0])
sql_list.append(sql)
geoscape.multiprocess_list("sql", sql_list, logger)
logger.info(
"\t- Step 2 of 7 : principal addresses - invalid matches deleted & bdy tag indexes created : {}"
.format(datetime.now() - start_time, ))
start_time = datetime.now()
# Step 3 of 7 : insert boundary tagged addresses
# create insert statement for multiprocessing
insert_field_list = list()
insert_field_list.append(
"(gnaf_pid, locality_pid, old_locality_pid, locality_name, postcode, state"
)
insert_join_list = list()
insert_join_list.append("FROM {}.address_principals AS pnts ".format(
settings.gnaf_schema, ))
select_field_list = list()
select_field_list.append(
"SELECT pnts.gnaf_pid, pnts.locality_pid, pnts.old_locality_pid, "
"pnts.locality_name, pnts.postcode, pnts.state")
drop_table_list = list()
for table in table_list:
pid_field = table[1]
name_field = pid_field.replace("_pid", "_name")
insert_field_list.append(", {0}, {1}".format(pid_field, name_field))
select_field_list.append(
", temp_{0}_tags.bdy_pid, temp_{0}_tags.bdy_name ".format(
table[0]))
insert_join_list.append(
"LEFT OUTER JOIN {0}.temp_{1}_tags ON pnts.gnaf_pid = temp_{1}_tags.gnaf_pid "
.format(settings.gnaf_schema, table[0]))
drop_table_list.append(
"DROP TABLE IF EXISTS {0}.temp_{1}_tags;".format(
settings.gnaf_schema, table[0]))
insert_field_list.append(") ")
insert_statement_list = list()
insert_statement_list.append(
"INSERT INTO {0}.address_principal_admin_boundaries ".format(
settings.gnaf_schema, ))
insert_statement_list.append("".join(insert_field_list))
insert_statement_list.append("".join(select_field_list))
insert_statement_list.append("".join(insert_join_list))
sql = "".join(insert_statement_list) + ";"
sql_list = geoscape.split_sql_into_list(pg_cur, sql, settings.gnaf_schema,
"address_principals", "pnts",
"gid", logger)
# logger.info("\n".join(sql_list)
if sql_list is not None:
geoscape.multiprocess_list("sql", sql_list, logger)
# drop temp tables
pg_cur.execute("".join(drop_table_list))
# get stats
pg_cur.execute("ANALYZE {0}.address_principal_admin_boundaries ".format(
settings.gnaf_schema))
logger.info(
"\t- Step 3 of 7 : principal addresses - bdy tags added to output table : {}"
.format(datetime.now() - start_time, ))
start_time = datetime.now()
# Step 4 of 7 : add index to output table
sql = "CREATE INDEX address_principal_admin_boundaries_gnaf_pid_idx " \
"ON {0}.address_principal_admin_boundaries USING btree (gnaf_pid)"\
.format(settings.gnaf_schema)
pg_cur.execute(sql)
logger.info(
"\t- Step 4 of 7 : created index on bdy tagged address table : {}".
format(datetime.now() - start_time, ))
start_time = datetime.now()
# Step 5 of 7 : log duplicates - happens when 2 boundaries overlap by a very small amount
# (can be ignored if there's a small number of records affected)
sql = "SELECT gnaf_pid FROM (SELECT Count(*) AS cnt, gnaf_pid FROM {0}.address_principal_admin_boundaries " \
"GROUP BY gnaf_pid) AS sqt WHERE cnt > 1".format(settings.gnaf_schema)
pg_cur.execute(sql)
# get cursor description to test if any rows returned safely
columns = pg_cur.description
# log gnaf_pids that got duplicate results
if columns is not None:
duplicates = pg_cur.fetchall()
gnaf_pids = list()
for duplicate in duplicates:
gnaf_pids.append("\t\t" + duplicate[0])
if len(gnaf_pids) > 0:
logger.warning(
"\t- Step 5 of 7 : found boundary tag duplicates : {}".format(
datetime.now() - start_time, ))
logger.warning("\n".join(gnaf_pids))
else:
logger.info(
"\t- Step 5 of 7 : no boundary tag duplicates : {}".format(
datetime.now() - start_time, ))
else:
logger.info("\t- Step 5 of 7 : no boundary tag duplicates : {}".format(
datetime.now() - start_time, ))
# Step 6 of 7 : Copy principal boundary tags to alias addresses
pg_cur.execute(
geoscape.open_sql_file("04-06-bdy-tags-for-alias-addresses.sql"))
logger.info(
"\t- Step 6 of 7 : alias addresses boundary tagged : {}".format(
datetime.now() - start_time, ))
start_time = datetime.now()
# Step 7 of 7 : Create view of all bdy tags
pg_cur.execute(geoscape.open_sql_file("04-07-create-bdy-tag-view.sql"))
logger.info(
"\t- Step 7 of 7 : boundary tagged address view created : {}".format(
datetime.now() - start_time, ))
def export_display_localities(pg_cur, settings):
start_time = datetime.now()
# create export path
pathlib.Path(settings['output_path']).mkdir(parents=True, exist_ok=True)
sql = geoscape.open_sql_file("07-export-display-localities.sql", settings)
if platform.system() == "Windows":
password_str = "SET"
else:
password_str = "export"
password_str += " PGPASSWORD={0}&&".format(settings['pg_password'])
cmd = password_str + "pgsql2shp -f \"{0}\" -u {1} -h {2} -p {3} {4} \"{5}\""\
.format(settings['shapefile_export_path'], settings['pg_user'], settings['pg_host'],
settings['pg_port'], settings['pg_db'], sql)
# logger.info(cmd
geoscape.run_command_line(cmd)
# zip shapefile
if settings['srid'] == 4283:
shp_zip_path = settings['shapefile_name'] + "-shapefile.zip"
else:
shp_zip_path = settings['shapefile_name'] + "-gda2020-shapefile.zip"
output_zipfile = os.path.join(settings['output_path'], shp_zip_path)
zf = zipfile.ZipFile(output_zipfile, mode="w")
for ext in settings['shapefile_extensions']:
file_name = settings['shapefile_name'] + ext
file_path = os.path.join(settings['output_path'], file_name)
zf.write(file_path, file_name, compress_type=zipfile.ZIP_DEFLATED)
zf.close()
time_elapsed = datetime.now() - start_time
logger.info(
"\t- Step 7 of 8 : display localities exported to SHP : {0}".format(
time_elapsed))
if time_elapsed.seconds < 2:
logger.warning(
"\t\t- This step took < 2 seconds - it may have failed silently. "
"Check your output directory!")
start_time = datetime.now()
# Export as GeoJSON FeatureCollection
sql = geoscape.prep_sql(
"SELECT gid, locality_pid, locality_name, COALESCE(postcode, '') AS postcode, state, "
"locality_class, address_count, street_count, ST_AsGeoJSON(geom, 5, 0) AS geom "
"FROM {0}.locality_bdys_display".format(settings['admin_bdys_schema']),
settings)
pg_cur.execute(sql)
# Create the GeoJSON output with an array of dictionaries containing the field names and values
# get column names from cursor
column_names = [desc[0] for desc in pg_cur.description]
json_dicts = []
row = pg_cur.fetchone()
if row is not None:
while row is not None:
rec = {}
props = {}
i = 0
rec["type"] = "Feature"
for column in column_names:
if column == "geometry" or column == "geom":
rec["geometry"] = row[i]
else:
props[column] = row[i]
i += 1
rec["properties"] = props
json_dicts.append(rec)
row = pg_cur.fetchone()
gj = json.dumps(json_dicts).replace("\\",
"").replace('"{',
'{').replace('}"', '}')
geojson = ''.join(['{"type":"FeatureCollection","features":', gj, '}'])
text_file = open(settings['geojson_export_path'], "w")
text_file.write(geojson)
text_file.close()
# compress GeoJSON
if settings['srid'] == 4283:
geojson_zip_path = settings['geojson_export_path'].replace(
".geojson", "-geojson.zip")
else:
geojson_zip_path = settings['geojson_export_path'].replace(
".geojson", "-gda2020-geojson.zip")
zipfile.ZipFile(geojson_zip_path, mode="w")\
.write(settings['geojson_export_path'], compress_type=zipfile.ZIP_DEFLATED)
logger.info(
"\t- Step 7 of 8 : display localities exported to GeoJSON : {0}".
format(datetime.now() - start_time))
