from pathlib import Path
import psutil
+from psycopg2 import sql as pysql
from nominatim.db.connection import connect, get_pg_env
-from nominatim.db import utils as db_utils
from nominatim.db.async_connection import DBConnection
from nominatim.db.sql_preprocessor import SQLPreprocessor
from nominatim.tools.exec_utils import run_osm2pgsql
LOG = logging.getLogger()
-def setup_database_skeleton(dsn, data_dir, no_partitions, rouser=None):
- """ Create a new database for Nominatim and populate it with the
- essential extensions and data.
+def _require_version(module, actual, expected):
+ """ Compares the version for the given module and raises an exception
+ if the actual version is too old.
"""
- LOG.warning('Creating database')
- create_db(dsn, rouser)
+ if actual < expected:
+ LOG.fatal('Minimum supported version of %s is %d.%d. '
+ 'Found version %d.%d.',
+ module, expected[0], expected[1], actual[0], actual[1])
+ raise UsageError(f'{module} is too old.')
- LOG.warning('Setting up database')
- with connect(dsn) as conn:
- setup_extensions(conn)
- LOG.warning('Loading basic data')
- import_base_data(dsn, data_dir, no_partitions)
+def setup_database_skeleton(dsn, rouser=None):
+ """ Create a new database for Nominatim and populate it with the
+ essential extensions.
+ The function fails when the database already exists or Postgresql or
+ PostGIS versions are too old.
-def create_db(dsn, rouser=None):
- """ Create a new database for the given DSN. Fails when the database
- already exists or the PostgreSQL version is too old.
Uses `createdb` to create the database.
If 'rouser' is given, then the function also checks that the user
raise UsageError('Creating new database failed.')
with connect(dsn) as conn:
- postgres_version = conn.server_version_tuple()
- if postgres_version < POSTGRESQL_REQUIRED_VERSION:
- LOG.fatal('Minimum supported version of Postgresql is %d.%d. '
- 'Found version %d.%d.',
- POSTGRESQL_REQUIRED_VERSION[0], POSTGRESQL_REQUIRED_VERSION[1],
- postgres_version[0], postgres_version[1])
- raise UsageError('PostgreSQL server is too old.')
+ _require_version('PostgreSQL server',
+ conn.server_version_tuple(),
+ POSTGRESQL_REQUIRED_VERSION)
if rouser is not None:
with conn.cursor() as cur:
"\n createuser %s", rouser, rouser)
raise UsageError('Missing read-only user.')
+ # Create extensions.
+ with conn.cursor() as cur:
+ cur.execute('CREATE EXTENSION IF NOT EXISTS hstore')
+ cur.execute('CREATE EXTENSION IF NOT EXISTS postgis')
+ conn.commit()
-
-def setup_extensions(conn):
- """ Set up all extensions needed for Nominatim. Also checks that the
- versions of the extensions are sufficient.
- """
- with conn.cursor() as cur:
- cur.execute('CREATE EXTENSION IF NOT EXISTS hstore')
- cur.execute('CREATE EXTENSION IF NOT EXISTS postgis')
- conn.commit()
-
- postgis_version = conn.postgis_version_tuple()
- if postgis_version < POSTGIS_REQUIRED_VERSION:
- LOG.fatal('Minimum supported version of PostGIS is %d.%d. '
- 'Found version %d.%d.',
- POSTGIS_REQUIRED_VERSION[0], POSTGIS_REQUIRED_VERSION[1],
- postgis_version[0], postgis_version[1])
- raise UsageError('PostGIS version is too old.')
-
-
-def import_base_data(dsn, sql_dir, ignore_partitions=False):
- """ Create and populate the tables with basic static data that provides
- the background for geocoding. Data is assumed to not yet exist.
- """
- db_utils.execute_file(dsn, sql_dir / 'country_name.sql')
- db_utils.execute_file(dsn, sql_dir / 'country_osm_grid.sql.gz')
-
- if ignore_partitions:
- with connect(dsn) as conn:
- with conn.cursor() as cur:
- cur.execute('UPDATE country_name SET partition = 0')
- conn.commit()
+ _require_version('PostGIS',
+ conn.postgis_version_tuple(),
+ POSTGIS_REQUIRED_VERSION)
-def import_osm_data(osm_file, options, drop=False, ignore_errors=False):
- """ Import the given OSM file. 'options' contains the list of
+def import_osm_data(osm_files, options, drop=False, ignore_errors=False):
+ """ Import the given OSM files. 'options' contains the list of
default settings for osm2pgsql.
"""
- options['import_file'] = osm_file
+ options['import_file'] = osm_files
options['append'] = False
options['threads'] = 1
# Make some educated guesses about cache size based on the size
# of the import file and the available memory.
mem = psutil.virtual_memory()
- fsize = os.stat(str(osm_file)).st_size
+ fsize = 0
+ if isinstance(osm_files, list):
+ for fname in osm_files:
+ fsize += os.stat(str(fname)).st_size
+ else:
+ fsize = os.stat(str(osm_files)).st_size
options['osm2pgsql_cache'] = int(min((mem.available + mem.cached) * 0.75,
fsize * 2) / 1024 / 1024) + 1
if drop:
conn.drop_table('planet_osm_nodes')
- if drop:
- if options['flatnode_file']:
- Path(options['flatnode_file']).unlink()
+ if drop and options['flatnode_file']:
+ Path(options['flatnode_file']).unlink()
def create_tables(conn, config, reverse_only=False):
sql.run_sql_file(conn, 'partition-tables.src.sql')
-def truncate_data_tables(conn, max_word_frequency=None):
+def truncate_data_tables(conn):
""" Truncate all data tables to prepare for a fresh load.
"""
with conn.cursor() as cur:
- cur.execute('TRUNCATE word')
cur.execute('TRUNCATE placex')
cur.execute('TRUNCATE place_addressline')
cur.execute('TRUNCATE location_area')
for table in [r[0] for r in list(cur)]:
cur.execute('TRUNCATE ' + table)
- if max_word_frequency is not None:
- # Used by getorcreate_word_id to ignore frequent partial words.
- cur.execute("""CREATE OR REPLACE FUNCTION get_maxwordfreq()
- RETURNS integer AS $$
- SELECT {} as maxwordfreq;
- $$ LANGUAGE SQL IMMUTABLE
- """.format(max_word_frequency))
- conn.commit()
+ conn.commit()
+
+
+_COPY_COLUMNS = pysql.SQL(',').join(map(pysql.Identifier,
+ ('osm_type', 'osm_id', 'class', 'type',
+ 'name', 'admin_level', 'address',
+ 'extratags', 'geometry')))
-_COPY_COLUMNS = 'osm_type, osm_id, class, type, name, admin_level, address, extratags, geometry'
-def load_data(dsn, data_dir, threads):
+def load_data(dsn, threads):
""" Copy data into the word and placex table.
"""
- # Pre-calculate the most important terms in the word list.
- db_utils.execute_file(dsn, data_dir / 'words.sql')
-
sel = selectors.DefaultSelector()
# Then copy data from place to placex in <threads - 1> chunks.
place_threads = max(1, threads - 1)
for imod in range(place_threads):
conn = DBConnection(dsn)
conn.connect()
- conn.perform("""INSERT INTO placex ({0})
- SELECT {0} FROM place
- WHERE osm_id % {1} = {2}
- AND NOT (class='place' and type='houses')
- AND ST_IsValid(geometry)
- """.format(_COPY_COLUMNS, place_threads, imod))
+ conn.perform(
+ pysql.SQL("""INSERT INTO placex ({columns})
+ SELECT {columns} FROM place
+ WHERE osm_id % {total} = {mod}
+ AND NOT (class='place' and (type='houses' or type='postcode'))
+ AND ST_IsValid(geometry)
+ """).format(columns=_COPY_COLUMNS,
+ total=pysql.Literal(place_threads),
+ mod=pysql.Literal(imod)))
sel.register(conn, selectors.EVENT_READ, conn)
# Address interpolations go into another table.
sql = SQLPreprocessor(conn, config)
sql.run_sql_file(conn, 'indices.sql', drop=drop)
-
-def create_country_names(conn, config):
- """ Create search index for default country names.
- """
-
- with conn.cursor() as cur:
- cur.execute("""SELECT getorcreate_country(make_standard_name('uk'), 'gb')""")
- cur.execute("""SELECT getorcreate_country(make_standard_name('united states'), 'us')""")
- cur.execute("""SELECT COUNT(*) FROM
- (SELECT getorcreate_country(make_standard_name(country_code),
- country_code) FROM country_name WHERE country_code is not null) AS x""")
- cur.execute("""SELECT COUNT(*) FROM
- (SELECT getorcreate_country(make_standard_name(name->'name'), country_code)
- FROM country_name WHERE name ? 'name') AS x""")
- sql_statement = """SELECT COUNT(*) FROM (SELECT getorcreate_country(make_standard_name(v),
- country_code) FROM (SELECT country_code, skeys(name)
- AS k, svals(name) AS v FROM country_name) x WHERE k"""
-
- languages = config.LANGUAGES
-
- if languages:
- sql_statement = "{} IN (".format(sql_statement)
- delim = ''
- for language in languages.split(','):
- sql_statement = "{}{}'name:{}'".format(sql_statement, delim, language)
- delim = ', '
- sql_statement = '{})'.format(sql_statement)
- else:
- sql_statement = "{} LIKE 'name:%'".format(sql_statement)
- sql_statement = "{}) v".format(sql_statement)
- cur.execute(sql_statement)
- conn.commit()
projects / nominatim.git / blobdiff