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# -*- coding: utf-8 -*- import os try: import urlparse except ImportError: import urllib.parse as urlparse # Register database schemes in URLs. urlparse.uses_netloc.append('postgres') urlparse.uses_netloc.append('postgresql') urlparse.uses_netloc.append('pgsql') urlparse.uses_netloc.append('postgis') urlparse.uses_netloc.append('mysql') urlparse.uses_netloc.append('mysql2') urlparse.uses_netloc.append('mysqlgis') urlparse.uses_netloc.append('mysql-connector') urlparse.uses_netloc.append('mssql') urlparse.uses_netloc.append('spatialite') urlparse.uses_netloc.append('sqlite') urlparse.uses_netloc.append('oracle') urlparse.uses_netloc.append('oraclegis') urlparse.uses_netloc.append('redshift') DEFAULT_ENV = 'DATABASE_URL' SCHEMES = { 'postgres': 'django.db.backends.postgresql_psycopg2', 'postgresql': 'django.db.backends.postgresql_psycopg2', 'pgsql': 'django.db.backends.postgresql_psycopg2', 'postgis': 'django.contrib.gis.db.backends.postgis', 'mysql': 'django.db.backends.mysql', 'mysql2': 'django.db.backends.mysql', 'mysqlgis': 'django.contrib.gis.db.backends.mysql', 'mysql-connector': 'mysql.connector.django', 'mssql': 'sql_server.pyodbc', 'spatialite': 'django.contrib.gis.db.backends.spatialite', 'sqlite': 'django.db.backends.sqlite3', 'oracle': 'django.db.backends.oracle', 'oraclegis': 'django.contrib.gis.db.backends.oracle', 'redshift': 'django_redshift_backend', } def config(env=DEFAULT_ENV, default=None, engine=None, conn_max_age=0, ssl_require=False): """Returns configured DATABASE dictionary from DATABASE_URL.""" config = {} s = os.environ.get(env, default) if s: config = parse(s, engine, conn_max_age, ssl_require) return config def parse(url, engine=None, conn_max_age=0, ssl_require=False): """Parses a database URL.""" if url == 'sqlite://:memory:': # this is a special case, because if we pass this URL into # urlparse, urlparse will choke trying to interpret "memory" # as a port number return { 'ENGINE': SCHEMES['sqlite'], 'NAME': ':memory:' } # note: no other settings are required for sqlite # otherwise parse the url as normal config = {} url = urlparse.urlparse(url) # Split query strings from path. path = url.path[1:] if '?' in path and not url.query: path, query = path.split('?', 2) else: path, query = path, url.query query = urlparse.parse_qs(query) # If we are using sqlite and we have no path, then assume we # want an in-memory database (this is the behaviour of sqlalchemy) if url.scheme == 'sqlite' and path == '': path = ':memory:' # Handle postgres percent-encoded paths. hostname = url.hostname or '' if '%2f' in hostname.lower(): # Switch to url.netloc to avoid lower cased paths hostname = url.netloc if "@" in hostname: hostname = hostname.rsplit("@", 1)[1] if ":" in hostname: hostname = hostname.split(":", 1)[0] hostname = hostname.replace('%2f', '/').replace('%2F', '/') # Lookup specified engine. engine = SCHEMES[url.scheme] if engine is None else engine port = (str(url.port) if url.port and engine == SCHEMES['oracle'] else url.port) # Update with environment configuration. config.update({ 'NAME': urlparse.unquote(path or ''), 'USER': urlparse.unquote(url.username or ''), 'PASSWORD': urlparse.unquote(url.password or ''), 'HOST': hostname, 'PORT': port or '', 'CONN_MAX_AGE': conn_max_age, }) # Pass the query string into OPTIONS. options = {} for key, values in query.items(): if url.scheme == 'mysql' and key == 'ssl-ca': options['ssl'] = {'ca': values[-1]} continue options[key] = values[-1] if ssl_require: options['sslmode'] = 'require' # Support for Postgres Schema URLs if 'currentSchema' in options and engine in ( 'django.contrib.gis.db.backends.postgis', 'django.db.backends.postgresql_psycopg2', 'django_redshift_backend', ): options['options'] = '-c search_path={0}'.format(options.pop('currentSchema')) if options: config['OPTIONS'] = options if engine: config['ENGINE'] = engine return config