def handle(self, *app_labels, **options):
from google.appengine._internal.django.db.models import get_app, get_apps, get_models, get_model
format = options.get('format','json')
indent = options.get('indent',None)
using = options.get('database', DEFAULT_DB_ALIAS)
connection = connections[using]
exclude = options.get('exclude',[])
show_traceback = options.get('traceback', False)
use_natural_keys = options.get('use_natural_keys', False)
excluded_apps = set(get_app(app_label) for app_label in exclude)
if len(app_labels) == 0:
app_list = SortedDict((app, None) for app in get_apps() if app not in excluded_apps)
else:
app_list = SortedDict()
for label in app_labels:
try:
app_label, model_label = label.split('.')
try:
app = get_app(app_label)
except ImproperlyConfigured:
raise CommandError("Unknown application: %s" % app_label)
model = get_model(app_label, model_label)
if model is None:
raise CommandError("Unknown model: %s.%s" % (app_label, model_label))
if app in app_list.keys():
if app_list[app] and model not in app_list[app]:
app_list[app].append(model)
else:
app_list[app] = [model]
except ValueError:
# This is just an app - no model qualifier
app_label = label
try:
app = get_app(app_label)
except ImproperlyConfigured:
raise CommandError("Unknown application: %s" % app_label)
app_list[app] = None
# Check that the serialization format exists; this is a shortcut to
# avoid collating all the objects and _then_ failing.
if format not in serializers.get_public_serializer_formats():
raise CommandError("Unknown serialization format: %s" % format)
try:
serializers.get_serializer(format)
except KeyError:
raise CommandError("Unknown serialization format: %s" % format)
# Now collate the objects to be serialized.
objects = []
for model in sort_dependencies(app_list.items()):
if not model._meta.proxy and router.allow_syncdb(using, model):
objects.extend(model._default_manager.using(using).all())
try:
return serializers.serialize(format, objects, indent=indent,
use_natural_keys=use_natural_keys)
except Exception, e:
if show_traceback:
raise
raise CommandError("Unable to serialize database: %s" % e)
def handle(self, *fixture_labels, **options):
using = options.get('database', DEFAULT_DB_ALIAS)
connection = connections[using]
self.style = no_style()
verbosity = int(options.get('verbosity', 1))
show_traceback = options.get('traceback', False)
# commit is a stealth option - it isn't really useful as
# a command line option, but it can be useful when invoking
# loaddata from within another script.
# If commit=True, loaddata will use its own transaction;
# if commit=False, the data load SQL will become part of
# the transaction in place when loaddata was invoked.
commit = options.get('commit', True)
# Keep a count of the installed objects and fixtures
fixture_count = 0
loaded_object_count = 0
fixture_object_count = 0
models = set()
humanize = lambda dirname: dirname and "'%s'" % dirname or 'absolute path'
# Get a cursor (even though we don't need one yet). This has
# the side effect of initializing the test database (if
# it isn't already initialized).
cursor = connection.cursor()
# Start transaction management. All fixtures are installed in a
# single transaction to ensure that all references are resolved.
if commit:
transaction.commit_unless_managed(using=using)
transaction.enter_transaction_management(using=using)
transaction.managed(True, using=using)
class SingleZipReader(zipfile.ZipFile):
def __init__(self, *args, **kwargs):
zipfile.ZipFile.__init__(self, *args, **kwargs)
if settings.DEBUG:
assert len(
self.namelist()
) == 1, "Zip-compressed fixtures must contain only one file."
def read(self):
return zipfile.ZipFile.read(self, self.namelist()[0])
compression_types = {
None: file,
'gz': gzip.GzipFile,
'zip': SingleZipReader
}
if has_bz2:
compression_types['bz2'] = bz2.BZ2File
app_module_paths = []
for app in get_apps():
if hasattr(app, '__path__'):
# It's a 'models/' subpackage
for path in app.__path__:
app_module_paths.append(path)
else:
# It's a models.py module
app_module_paths.append(app.__file__)
app_fixtures = [
os.path.join(os.path.dirname(path), 'fixtures')
for path in app_module_paths
]
for fixture_label in fixture_labels:
parts = fixture_label.split('.')
if len(parts) > 1 and parts[-1] in compression_types:
compression_formats = [parts[-1]]
parts = parts[:-1]
else:
compression_formats = list(compression_types.keys())
if len(parts) == 1:
fixture_name = parts[0]
formats = serializers.get_public_serializer_formats()
else:
fixture_name, format = '.'.join(parts[:-1]), parts[-1]
if format in serializers.get_public_serializer_formats():
formats = [format]
else:
formats = []
if formats:
if verbosity > 1:
self.stdout.write("Loading '%s' fixtures...\n" %
fixture_name)
else:
self.stderr.write(
self.style.ERROR(
"Problem installing fixture '%s': %s is not a known serialization format.\n"
% (fixture_name, format)))
if commit:
transaction.rollback(using=using)
transaction.leave_transaction_management(using=using)
return
if os.path.isabs(fixture_name):
fixture_dirs = [fixture_name]
else:
fixture_dirs = app_fixtures + list(
settings.FIXTURE_DIRS) + ['']
for fixture_dir in fixture_dirs:
if verbosity > 1:
self.stdout.write("Checking %s for fixtures...\n" %
humanize(fixture_dir))
label_found = False
for combo in product([using, None], formats,
compression_formats):
database, format, compression_format = combo
file_name = '.'.join(
p for p in
[fixture_name, database, format, compression_format]
if p)
if verbosity > 1:
self.stdout.write(
"Trying %s for %s fixture '%s'...\n" %
(humanize(fixture_dir), file_name, fixture_name))
full_path = os.path.join(fixture_dir, file_name)
open_method = compression_types[compression_format]
try:
fixture = open_method(full_path, 'r')
if label_found:
fixture.close()
self.stderr.write(
self.style.ERROR(
"Multiple fixtures named '%s' in %s. Aborting.\n"
% (fixture_name, humanize(fixture_dir))))
if commit:
transaction.rollback(using=using)
transaction.leave_transaction_management(
using=using)
return
else:
fixture_count += 1
objects_in_fixture = 0
loaded_objects_in_fixture = 0
if verbosity > 0:
self.stdout.write(
"Installing %s fixture '%s' from %s.\n" %
(format, fixture_name,
humanize(fixture_dir)))
try:
objects = serializers.deserialize(format,
fixture,
using=using)
for obj in objects:
objects_in_fixture += 1
if router.allow_syncdb(
using, obj.object.__class__):
loaded_objects_in_fixture += 1
models.add(obj.object.__class__)
obj.save(using=using)
loaded_object_count += loaded_objects_in_fixture
fixture_object_count += objects_in_fixture
label_found = True
except (SystemExit, KeyboardInterrupt):
raise
except Exception:
import traceback
fixture.close()
if commit:
transaction.rollback(using=using)
transaction.leave_transaction_management(
using=using)
if show_traceback:
traceback.print_exc()
else:
self.stderr.write(
self.style.ERROR(
"Problem installing fixture '%s': %s\n"
% (full_path, ''.join(
traceback.format_exception(
sys.exc_info()[0],
sys.exc_info()[1],
sys.exc_info()[2])))))
return
fixture.close()
# If the fixture we loaded contains 0 objects, assume that an
# error was encountered during fixture loading.
if objects_in_fixture == 0:
self.stderr.write(
self.style.ERROR(
"No fixture data found for '%s'. (File format may be invalid.)\n"
% (fixture_name)))
if commit:
transaction.rollback(using=using)
transaction.leave_transaction_management(
using=using)
return
except Exception as e:
if verbosity > 1:
self.stdout.write(
"No %s fixture '%s' in %s.\n" %
(format, fixture_name, humanize(fixture_dir)))
# If we found even one object in a fixture, we need to reset the
# database sequences.
if loaded_object_count > 0:
sequence_sql = connection.ops.sequence_reset_sql(
self.style, models)
if sequence_sql:
if verbosity > 1:
self.stdout.write("Resetting sequences\n")
for line in sequence_sql:
cursor.execute(line)
if commit:
transaction.commit(using=using)
transaction.leave_transaction_management(using=using)
if fixture_object_count == 0:
if verbosity > 0:
self.stdout.write("No fixtures found.\n")
else:
if verbosity > 0:
if fixture_object_count == loaded_object_count:
self.stdout.write(
"Installed %d object(s) from %d fixture(s)\n" %
(loaded_object_count, fixture_count))
else:
self.stdout.write(
"Installed %d object(s) (of %d) from %d fixture(s)\n" %
(loaded_object_count, fixture_object_count,
fixture_count))
# Close the DB connection. This is required as a workaround for an
# edge case in MySQL: if the same connection is used to
# create tables, load data, and query, the query can return
# incorrect results. See Django #7572, MySQL #37735.
if commit:
connection.close()
def handle(self, *fixture_labels, **options):
using = options.get('database', DEFAULT_DB_ALIAS)
connection = connections[using]
self.style = no_style()
verbosity = int(options.get('verbosity', 1))
show_traceback = options.get('traceback', False)
# commit is a stealth option - it isn't really useful as
# a command line option, but it can be useful when invoking
# loaddata from within another script.
# If commit=True, loaddata will use its own transaction;
# if commit=False, the data load SQL will become part of
# the transaction in place when loaddata was invoked.
commit = options.get('commit', True)
# Keep a count of the installed objects and fixtures
fixture_count = 0
loaded_object_count = 0
fixture_object_count = 0
models = set()
humanize = lambda dirname: dirname and "'%s'" % dirname or 'absolute path'
# Get a cursor (even though we don't need one yet). This has
# the side effect of initializing the test database (if
# it isn't already initialized).
cursor = connection.cursor()
# Start transaction management. All fixtures are installed in a
# single transaction to ensure that all references are resolved.
if commit:
transaction.commit_unless_managed(using=using)
transaction.enter_transaction_management(using=using)
transaction.managed(True, using=using)
class SingleZipReader(zipfile.ZipFile):
def __init__(self, *args, **kwargs):
zipfile.ZipFile.__init__(self, *args, **kwargs)
if settings.DEBUG:
assert len(self.namelist()) == 1, "Zip-compressed fixtures must contain only one file."
def read(self):
return zipfile.ZipFile.read(self, self.namelist()[0])
compression_types = {
None: file,
'gz': gzip.GzipFile,
'zip': SingleZipReader
}
if has_bz2:
compression_types['bz2'] = bz2.BZ2File
app_module_paths = []
for app in get_apps():
if hasattr(app, '__path__'):
# It's a 'models/' subpackage
for path in app.__path__:
app_module_paths.append(path)
else:
# It's a models.py module
app_module_paths.append(app.__file__)
app_fixtures = [os.path.join(os.path.dirname(path), 'fixtures') for path in app_module_paths]
for fixture_label in fixture_labels:
parts = fixture_label.split('.')
if len(parts) > 1 and parts[-1] in compression_types:
compression_formats = [parts[-1]]
parts = parts[:-1]
else:
compression_formats = list(compression_types.keys())
if len(parts) == 1:
fixture_name = parts[0]
formats = serializers.get_public_serializer_formats()
else:
fixture_name, format = '.'.join(parts[:-1]), parts[-1]
if format in serializers.get_public_serializer_formats():
formats = [format]
else:
formats = []
if formats:
if verbosity > 1:
self.stdout.write("Loading '%s' fixtures...\n" % fixture_name)
else:
self.stderr.write(
self.style.ERROR("Problem installing fixture '%s': %s is not a known serialization format.\n" %
(fixture_name, format)))
if commit:
transaction.rollback(using=using)
transaction.leave_transaction_management(using=using)
return
if os.path.isabs(fixture_name):
fixture_dirs = [fixture_name]
else:
fixture_dirs = app_fixtures + list(settings.FIXTURE_DIRS) + ['']
for fixture_dir in fixture_dirs:
if verbosity > 1:
self.stdout.write("Checking %s for fixtures...\n" % humanize(fixture_dir))
label_found = False
for combo in product([using, None], formats, compression_formats):
database, format, compression_format = combo
file_name = '.'.join(
p for p in [
fixture_name, database, format, compression_format
]
if p
)
if verbosity > 1:
self.stdout.write("Trying %s for %s fixture '%s'...\n" % (humanize(fixture_dir), file_name, fixture_name))
full_path = os.path.join(fixture_dir, file_name)
open_method = compression_types[compression_format]
try:
fixture = open_method(full_path, 'r')
if label_found:
fixture.close()
self.stderr.write(self.style.ERROR("Multiple fixtures named '%s' in %s. Aborting.\n" %
(fixture_name, humanize(fixture_dir))))
if commit:
transaction.rollback(using=using)
transaction.leave_transaction_management(using=using)
return
else:
fixture_count += 1
objects_in_fixture = 0
loaded_objects_in_fixture = 0
if verbosity > 0:
self.stdout.write("Installing %s fixture '%s' from %s.\n" % (format, fixture_name, humanize(fixture_dir)))
try:
objects = serializers.deserialize(format, fixture, using=using)
for obj in objects:
objects_in_fixture += 1
if router.allow_syncdb(using, obj.object.__class__):
loaded_objects_in_fixture += 1
models.add(obj.object.__class__)
obj.save(using=using)
loaded_object_count += loaded_objects_in_fixture
fixture_object_count += objects_in_fixture
label_found = True
except (SystemExit, KeyboardInterrupt):
raise
except Exception:
import traceback
fixture.close()
if commit:
transaction.rollback(using=using)
transaction.leave_transaction_management(using=using)
if show_traceback:
traceback.print_exc()
else:
self.stderr.write(
self.style.ERROR("Problem installing fixture '%s': %s\n" %
(full_path, ''.join(traceback.format_exception(sys.exc_info()[0],
sys.exc_info()[1], sys.exc_info()[2])))))
return
fixture.close()
# If the fixture we loaded contains 0 objects, assume that an
# error was encountered during fixture loading.
if objects_in_fixture == 0:
self.stderr.write(
self.style.ERROR("No fixture data found for '%s'. (File format may be invalid.)\n" %
(fixture_name)))
if commit:
transaction.rollback(using=using)
transaction.leave_transaction_management(using=using)
return
except Exception as e:
if verbosity > 1:
self.stdout.write("No %s fixture '%s' in %s.\n" % (format, fixture_name, humanize(fixture_dir)))
# If we found even one object in a fixture, we need to reset the
# database sequences.
if loaded_object_count > 0:
sequence_sql = connection.ops.sequence_reset_sql(self.style, models)
if sequence_sql:
if verbosity > 1:
self.stdout.write("Resetting sequences\n")
for line in sequence_sql:
cursor.execute(line)
if commit:
transaction.commit(using=using)
transaction.leave_transaction_management(using=using)
if fixture_object_count == 0:
if verbosity > 0:
self.stdout.write("No fixtures found.\n")
else:
if verbosity > 0:
if fixture_object_count == loaded_object_count:
self.stdout.write("Installed %d object(s) from %d fixture(s)\n" % (
loaded_object_count, fixture_count))
else:
self.stdout.write("Installed %d object(s) (of %d) from %d fixture(s)\n" % (
loaded_object_count, fixture_object_count, fixture_count))
# Close the DB connection. This is required as a workaround for an
# edge case in MySQL: if the same connection is used to
# create tables, load data, and query, the query can return
# incorrect results. See Django #7572, MySQL #37735.
if commit:
connection.close()
