Add createdatabase script
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247
createdatabase.py
Executable file
247
createdatabase.py
Executable file
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#!/usr/bin/env python
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import sys
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import os
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import re
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# import time
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import logging
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import argparse as arg
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import psycopg2 as pg
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from psycopg2.extensions import AsIs
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from classes.CustomFormater import CustomFormatter
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from classes.Timer import Timer
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# Schema name is NAMEDATALEN-1 (PGSQL source code)
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# -> src/include/pg_config_manual.h
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def check_schema_name(arg_value, pat=re.compile(r"^[a-z0-9A-Z]{1,63}$")):
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if not pat.match(arg_value):
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raise ValueError
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return arg_value
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def parse_args():
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"""
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Parse arguments
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"""
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parser = arg.ArgumentParser('Process csv files from INSEE')
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parser.add_argument('--source', '-s',
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help='csv source directory',
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default='exports')
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parser.add_argument('--connection-file', '-f',
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help='Postgresql connexion file',
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default='.pgconn'
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)
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# As whe use AsIs function to not include '' in our sql queries for schema
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# name, me mus ensure that it is not contains SQL special characters
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# like comments --, final coma etc and avoid SQL injection
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parser.add_argument('--schema-name',
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help='Database schema name',
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type=check_schema_name,
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default='insee'
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)
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debug_group = parser.add_mutually_exclusive_group()
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debug_group.add_argument('--verbose', '-V',
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help='Verbose output',
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action='store_true')
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debug_group.add_argument('--debug', '-d',
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help='Activate debug mode',
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action='store_true')
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return parser.parse_args()
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if __name__ == '__main__':
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args = parse_args()
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t = Timer()
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#logging.basicConfig(level=logging.DEBUG)
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logger = logging.getLogger()
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tty_handler = logging.StreamHandler()
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# create console handler with a higher log level
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tty_handler.setFormatter(CustomFormatter())
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logger.addHandler(tty_handler)
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if args.verbose is True:
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logger.setLevel(logging.INFO)
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logger.info('VERBOSE mode activated')
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if args.debug is True:
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logger.setLevel(logging.DEBUG)
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logger.debug('DEBUG mode activated')
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logging.debug('Import pgsql connection file {}'.format(args.connection_file))
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with open(args.connection_file) as cf:
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pg_conn = cf.read()
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t.start('Create database schema')
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conn = pg.connect(pg_conn)
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with conn.cursor() as curs:
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curs.execute('CREATE SCHEMA IF NOT EXISTS %s', (AsIs(args.schema_name),))
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curs.execute("""
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CREATE TABLE IF NOT EXISTS %(schema)s.region (
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id_region serial PRIMARY KEY,
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reg VARCHAR(2) unique,
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ncc VARCHAR(200),
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libelle VARCHAR(200)
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);""",
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{'schema':AsIs(args.schema_name)})
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curs.execute("""
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CREATE TABLE IF NOT EXISTS %(schema)s.departement (
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id_departement serial PRIMARY KEY,
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dep VARCHAR(3) unique,
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ncc VARCHAR(200),
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libelle VARCHAR(200),
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reg VARCHAR(2) REFERENCES %(schema)s.region(reg)
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);""",
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{'schema':AsIs(args.schema_name)})
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curs.execute("""
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CREATE TABLE IF NOT EXISTS %(schema)s.commune (
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id_commune serial PRIMARY KEY,
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com VARCHAR(5) unique,
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ncc VARCHAR(200),
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libelle VARCHAR(200),
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dep VARCHAR(3) REFERENCES %(schema)s.departement(dep),
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superf FLOAT CONSTRAINT SUPERFICIE_POSITIVE CHECK (superf > 0)
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);""",
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{'schema':AsIs(args.schema_name)})
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curs.execute("""
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CREATE TABLE IF NOT EXISTS %(schema)s.cheflieudepartement(
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dep VARCHAR(3) REFERENCES %(schema)s.departement(dep),
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cheflieudep VARCHAR(5) REFERENCES %(schema)s.commune(com),
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PRIMARY KEY (dep, cheflieudep)
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);""",
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{'schema':AsIs(args.schema_name)})
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curs.execute("""
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CREATE TABLE IF NOT EXISTS %(schema)s.cheflieuregion(
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reg VARCHAR(3) REFERENCES %(schema)s.region(reg),
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cheflieureg VARCHAR(5) REFERENCES %(schema)s.commune(com),
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PRIMARY KEY (reg, cheflieureg)
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);""",
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{'schema':AsIs(args.schema_name)})
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curs.execute("""
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CREATE TABLE IF NOT EXISTS %(schema)s.indicateur(
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id_indicateur INTEGER PRIMARY KEY,
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libelle VARCHAR(200)
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);""",
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{'schema':AsIs(args.schema_name)})
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curs.execute("""
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CREATE TABLE IF NOT EXISTS %(schema)s.statistique(
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com VARCHAR(5) REFERENCES %(schema)s.commune(com),
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id_indicateur INTEGER REFERENCES %(schema)s.indicateur(id_indicateur),
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date_debut SMALLINT,
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date_fin SMALLINT CONSTRAINT APRES_DATEDEBUT CHECK (date_fin > date_debut),
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valeur float,
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PRIMARY KEY (com,id_indicateur,date_debut)
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);""",
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{'schema':AsIs(args.schema_name)})
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curs.execute("""
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CREATE OR REPLACE VIEW %(schema)s.view_indicateur_dep AS
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SELECT id_departement, d.dep, d.ncc, s.id_indicateur, s.date_debut, SUM(s.VALEUR)
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FROM %(schema)s.departement d
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INNER JOIN %(schema)s.commune c ON c.dep = d.dep
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INNER JOIN %(schema)s.statistique s ON s.com = c.com
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GROUP BY id_departement,d.dep, s.date_debut, d.ncc, s.id_indicateur
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ORDER BY id_indicateur;""",
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{'schema':AsIs(args.schema_name)})
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curs.execute("""
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CREATE OR REPLACE VIEW %(schema)s.view_indicateur_reg AS
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SELECT id_region, r.reg, r.ncc, s.id_indicateur, s.date_debut, SUM(s.valeur)
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FROM %(schema)s.region r
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INNER JOIN %(schema)s.departement d ON d.reg = r.reg
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INNER JOIN %(schema)s.commune c ON c.dep = d.dep
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INNER JOIN %(schema)s.statistique s ON s.com = c.com
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GROUP BY id_region, r.reg, s.date_debut, r.ncc, s.id_indicateur
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ORDER BY id_indicateur;""",
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{'schema':AsIs(args.schema_name)})
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curs.execute("""
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ALTER TABLE %(schema)s.region
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ADD COLUMN IF NOT EXISTS population INT;
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""",
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{'schema':AsIs(args.schema_name)})
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curs.execute("""
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ALTER TABLE %(schema)s.departement
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ADD COLUMN IF NOT EXISTS population INT;
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""",
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{'schema':AsIs(args.schema_name)})
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curs.execute("""
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CREATE OR REPLACE PROCEDURE %(schema)s.PRC_POP_REG_DEP()
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LANGUAGE plpgsql
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AS $$
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DECLARE
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REC RECORD;
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BEGIN
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FOR REC IN (SELECT id_indicateur, ncc, SUM valeur
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FROM %(schema)s.view_indicateur_dep v
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WHERE id_indicateur = 1
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AND date_debut = '2018') LOOP
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UPDATE %(schema)s.departement
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SET population = REC.valeur
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WHERE id_departement = REC.id_departement;
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END LOOP;
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FOR REC IN (SELECT reg, SUM(population) valeur
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FROM DEPARTEMENT d
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GROUP BY REG) LOOP
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UPDATE %(schema)s.region
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SET population = REC.VALEUR
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WHERE reg = REC.reg;
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END LOOP;
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END;
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$$;""",
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{'schema':AsIs(args.schema_name)})
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conn.commit()
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t.stop()
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t.start('Import data from csv files')
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with conn.cursor() as curs:
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curs.execute('SET search_path TO {}'.format(args.schema_name))
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csvs = {
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'region': {'col': ('reg', 'ncc', 'libelle'), 'null':''},
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'departement': {'col': ('dep', 'ncc', 'libelle', 'reg'), 'null': ''},
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'commune': {'col': ('com', 'ncc', 'libelle', 'dep', 'superf'), 'null':''},
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'cheflieudepartement': {'col': ('cheflieudep', 'dep'), 'null':''},
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'cheflieuregion': {'col': ('cheflieureg', 'reg'), 'null':''},
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'indicateur': {'col': ('id_indicateur', 'libelle'), 'null':''},
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'statistique': {
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'col': (
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'com',
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'id_indicateur',
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'date_debut',
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'date_fin',
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'valeur'
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),
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'null':'null'
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}
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}
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for csv, params in csvs.items():
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logging.debug('Process csv file : {} with {}'.format(csv, params))
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with open( args.source + '/' + csv + '.csv') as f:
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with conn.cursor() as curs:
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curs.copy_from(
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f,
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csv,
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sep=',',
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columns=params['col'],
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null=params['null']
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)
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conn.commit()
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t.stop()
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conn.close()
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