/
creation.py
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/
creation.py
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import sys, time
from django.core import management
# This dictionary maps Field objects to their associated Oracle column
# types, as strings. Column-type strings can contain format strings; they'll
# be interpolated against the values of Field.__dict__ before being output.
# If a column type is set to None, it won't be included in the output.
#
# Any format strings starting with "qn_" are quoted before being used in the
# output (the "qn_" prefix is stripped before the lookup is performed.
DATA_TYPES = {
'AutoField': 'NUMBER(11)',
'BooleanField': 'NUMBER(1) CHECK (%(qn_column)s IN (0,1))',
'CharField': 'NVARCHAR2(%(max_length)s)',
'CommaSeparatedIntegerField': 'VARCHAR2(%(max_length)s)',
'DateField': 'DATE',
'DateTimeField': 'TIMESTAMP',
'DecimalField': 'NUMBER(%(max_digits)s, %(decimal_places)s)',
'FileField': 'NVARCHAR2(%(max_length)s)',
'FilePathField': 'NVARCHAR2(%(max_length)s)',
'FloatField': 'DOUBLE PRECISION',
'IntegerField': 'NUMBER(11)',
'IPAddressField': 'VARCHAR2(15)',
'NullBooleanField': 'NUMBER(1) CHECK ((%(qn_column)s IN (0,1)) OR (%(qn_column)s IS NULL))',
'OneToOneField': 'NUMBER(11)',
'PhoneNumberField': 'VARCHAR2(20)',
'PositiveIntegerField': 'NUMBER(11) CHECK (%(qn_column)s >= 0)',
'PositiveSmallIntegerField': 'NUMBER(11) CHECK (%(qn_column)s >= 0)',
'SlugField': 'NVARCHAR2(50)',
'SmallIntegerField': 'NUMBER(11)',
'TextField': 'NCLOB',
'TimeField': 'TIMESTAMP',
'URLField': 'VARCHAR2(%(max_length)s)',
'USStateField': 'CHAR(2)',
}
TEST_DATABASE_PREFIX = 'test_'
PASSWORD = 'Im_a_lumberjack'
REMEMBER = {}
def create_test_db(settings, connection, verbosity=1, autoclobber=False):
TEST_DATABASE_NAME = _test_database_name(settings)
TEST_DATABASE_USER = _test_database_user(settings)
TEST_DATABASE_PASSWD = _test_database_passwd(settings)
TEST_DATABASE_TBLSPACE = _test_database_tblspace(settings)
TEST_DATABASE_TBLSPACE_TMP = _test_database_tblspace_tmp(settings)
parameters = {
'dbname': TEST_DATABASE_NAME,
'user': TEST_DATABASE_USER,
'password': TEST_DATABASE_PASSWD,
'tblspace': TEST_DATABASE_TBLSPACE,
'tblspace_temp': TEST_DATABASE_TBLSPACE_TMP,
}
REMEMBER['user'] = settings.DATABASE_USER
REMEMBER['passwd'] = settings.DATABASE_PASSWORD
cursor = connection.cursor()
if _test_database_create(settings):
if verbosity >= 1:
print 'Creating test database...'
try:
_create_test_db(cursor, parameters, verbosity)
except Exception, e:
sys.stderr.write("Got an error creating the test database: %s\n" % e)
if not autoclobber:
confirm = raw_input("It appears the test database, %s, already exists. Type 'yes' to delete it, or 'no' to cancel: " % TEST_DATABASE_NAME)
if autoclobber or confirm == 'yes':
try:
if verbosity >= 1:
print "Destroying old test database..."
_destroy_test_db(cursor, parameters, verbosity)
if verbosity >= 1:
print "Creating test database..."
_create_test_db(cursor, parameters, verbosity)
except Exception, e:
sys.stderr.write("Got an error recreating the test database: %s\n" % e)
sys.exit(2)
else:
print "Tests cancelled."
sys.exit(1)
if _test_user_create(settings):
if verbosity >= 1:
print "Creating test user..."
try:
_create_test_user(cursor, parameters, verbosity)
except Exception, e:
sys.stderr.write("Got an error creating the test user: %s\n" % e)
if not autoclobber:
confirm = raw_input("It appears the test user, %s, already exists. Type 'yes' to delete it, or 'no' to cancel: " % TEST_DATABASE_USER)
if autoclobber or confirm == 'yes':
try:
if verbosity >= 1:
print "Destroying old test user..."
_destroy_test_user(cursor, parameters, verbosity)
if verbosity >= 1:
print "Creating test user..."
_create_test_user(cursor, parameters, verbosity)
except Exception, e:
sys.stderr.write("Got an error recreating the test user: %s\n" % e)
sys.exit(2)
else:
print "Tests cancelled."
sys.exit(1)
connection.close()
settings.DATABASE_USER = TEST_DATABASE_USER
settings.DATABASE_PASSWORD = TEST_DATABASE_PASSWD
management.call_command('syncdb', verbosity=verbosity, interactive=False)
# Get a cursor (even though we don't need one yet). This has
# the side effect of initializing the test database.
cursor = connection.cursor()
def destroy_test_db(settings, connection, old_database_name, verbosity=1):
connection.close()
TEST_DATABASE_NAME = _test_database_name(settings)
TEST_DATABASE_USER = _test_database_user(settings)
TEST_DATABASE_PASSWD = _test_database_passwd(settings)
TEST_DATABASE_TBLSPACE = _test_database_tblspace(settings)
TEST_DATABASE_TBLSPACE_TMP = _test_database_tblspace_tmp(settings)
settings.DATABASE_NAME = old_database_name
settings.DATABASE_USER = REMEMBER['user']
settings.DATABASE_PASSWORD = REMEMBER['passwd']
parameters = {
'dbname': TEST_DATABASE_NAME,
'user': TEST_DATABASE_USER,
'password': TEST_DATABASE_PASSWD,
'tblspace': TEST_DATABASE_TBLSPACE,
'tblspace_temp': TEST_DATABASE_TBLSPACE_TMP,
}
REMEMBER['user'] = settings.DATABASE_USER
REMEMBER['passwd'] = settings.DATABASE_PASSWORD
cursor = connection.cursor()
time.sleep(1) # To avoid "database is being accessed by other users" errors.
if _test_user_create(settings):
if verbosity >= 1:
print 'Destroying test user...'
_destroy_test_user(cursor, parameters, verbosity)
if _test_database_create(settings):
if verbosity >= 1:
print 'Destroying test database...'
_destroy_test_db(cursor, parameters, verbosity)
connection.close()
def _create_test_db(cursor, parameters, verbosity):
if verbosity >= 2:
print "_create_test_db(): dbname = %s" % parameters['dbname']
statements = [
"""CREATE TABLESPACE %(tblspace)s
DATAFILE '%(tblspace)s.dbf' SIZE 20M
REUSE AUTOEXTEND ON NEXT 10M MAXSIZE 100M
""",
"""CREATE TEMPORARY TABLESPACE %(tblspace_temp)s
TEMPFILE '%(tblspace_temp)s.dbf' SIZE 20M
REUSE AUTOEXTEND ON NEXT 10M MAXSIZE 100M
""",
]
_execute_statements(cursor, statements, parameters, verbosity)
def _create_test_user(cursor, parameters, verbosity):
if verbosity >= 2:
print "_create_test_user(): username = %s" % parameters['user']
statements = [
"""CREATE USER %(user)s
IDENTIFIED BY %(password)s
DEFAULT TABLESPACE %(tblspace)s
TEMPORARY TABLESPACE %(tblspace_temp)s
""",
"""GRANT CONNECT, RESOURCE TO %(user)s""",
]
_execute_statements(cursor, statements, parameters, verbosity)
def _destroy_test_db(cursor, parameters, verbosity):
if verbosity >= 2:
print "_destroy_test_db(): dbname=%s" % parameters['dbname']
statements = [
'DROP TABLESPACE %(tblspace)s INCLUDING CONTENTS AND DATAFILES CASCADE CONSTRAINTS',
'DROP TABLESPACE %(tblspace_temp)s INCLUDING CONTENTS AND DATAFILES CASCADE CONSTRAINTS',
]
_execute_statements(cursor, statements, parameters, verbosity)
def _destroy_test_user(cursor, parameters, verbosity):
if verbosity >= 2:
print "_destroy_test_user(): user=%s" % parameters['user']
print "Be patient. This can take some time..."
statements = [
'DROP USER %(user)s CASCADE',
]
_execute_statements(cursor, statements, parameters, verbosity)
def _execute_statements(cursor, statements, parameters, verbosity):
for template in statements:
stmt = template % parameters
if verbosity >= 2:
print stmt
try:
cursor.execute(stmt)
except Exception, err:
sys.stderr.write("Failed (%s)\n" % (err))
raise
def _test_database_name(settings):
name = TEST_DATABASE_PREFIX + settings.DATABASE_NAME
try:
if settings.TEST_DATABASE_NAME:
name = settings.TEST_DATABASE_NAME
except AttributeError:
pass
except:
raise
return name
def _test_database_create(settings):
name = True
try:
if settings.TEST_DATABASE_CREATE:
name = True
else:
name = False
except AttributeError:
pass
except:
raise
return name
def _test_user_create(settings):
name = True
try:
if settings.TEST_USER_CREATE:
name = True
else:
name = False
except AttributeError:
pass
except:
raise
return name
def _test_database_user(settings):
name = TEST_DATABASE_PREFIX + settings.DATABASE_NAME
try:
if settings.TEST_DATABASE_USER:
name = settings.TEST_DATABASE_USER
except AttributeError:
pass
except:
raise
return name
def _test_database_passwd(settings):
name = PASSWORD
try:
if settings.TEST_DATABASE_PASSWD:
name = settings.TEST_DATABASE_PASSWD
except AttributeError:
pass
except:
raise
return name
def _test_database_tblspace(settings):
name = TEST_DATABASE_PREFIX + settings.DATABASE_NAME
try:
if settings.TEST_DATABASE_TBLSPACE:
name = settings.TEST_DATABASE_TBLSPACE
except AttributeError:
pass
except:
raise
return name
def _test_database_tblspace_tmp(settings):
name = TEST_DATABASE_PREFIX + settings.DATABASE_NAME + '_temp'
try:
if settings.TEST_DATABASE_TBLSPACE_TMP:
name = settings.TEST_DATABASE_TBLSPACE_TMP
except AttributeError:
pass
except:
raise
return name