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import json
import os
import tempfile
import zipfile
from rest_framework import serializers
from zipfile import ZipFile
from django.apps import apps
from django.conf import settings
from django.core.serializers import deserialize
from django.db.models import Q
from . import models
from ishtar_common.serializers_utils import generic_get_results, \
archive_serialization, generic_archive_files, SERIALIZATION_VERSION, \
get_model_from_filename
from archaeological_operations.serializers import operation_serialization, \
OPERATION_MODEL_LIST
from archaeological_context_records.serializers import cr_serialization, \
CR_MODEL_LIST
from archaeological_finds.serializers import find_serialization, \
FIND_MODEL_LIST
from archaeological_warehouse.serializers import warehouse_serialization, \
WAREHOUSE_MODEL_LIST
class PublicSerializer(serializers.BaseSerializer):
def to_representation(self, obj):
return obj.public_representation()
TYPE_MODEL_EXCLUDE = ["Area", "OperationTypeOld"]
def get_type_models():
return [
model for model in apps.get_models()
if isinstance(model(), models.GeneralType) and (
model.__name__ not in TYPE_MODEL_EXCLUDE)
]
def type_serialization(archive=False, return_empty_types=False,
archive_name=None):
result = generic_get_results(get_type_models(), "types")
return archive_serialization(result, archive_dir="types", archive=archive,
return_empty_types=return_empty_types,
archive_name=archive_name)
CONF_MODEL_LIST = [
models.IshtarSiteProfile, models.GlobalVar, models.CustomForm,
models.ExcludedField, models.JsonDataSection, models.JsonDataField,
models.CustomFormJsonField, models.ImporterModel,
models.DocumentTemplate
]
def conf_serialization(archive=False, return_empty_types=False,
archive_name=None):
media_archive = None
if archive:
media_archive = generic_archive_files(CONF_MODEL_LIST)
result = generic_get_results(CONF_MODEL_LIST, "common_configuration")
full_archive = archive_serialization(
result, archive_dir="common_configuration", archive=archive,
return_empty_types=return_empty_types, archive_name=archive_name)
if not media_archive:
return full_archive
with ZipFile(full_archive, 'a') as current_zip:
current_zip.write(media_archive, arcname="media.zip")
return full_archive
IMPORT_MODEL_LIST = [
models.Regexp, models.ImporterModel, models.ImporterType,
models.ValueFormater, models.ImporterColumn,
models.FormaterType, models.ImporterDefault, models.ImporterDefaultValues,
models.ImportTarget, models.ImporterDefaultValues,
models.ImporterDuplicateField
]
def importer_serialization(archive=False, return_empty_types=False,
archive_name=None):
result = generic_get_results(IMPORT_MODEL_LIST, "common_imports")
full_archive = archive_serialization(
result, archive_dir="common_imports", archive=archive,
return_empty_types=return_empty_types, archive_name=archive_name)
return full_archive
GEO_MODEL_LIST = [
models.State, models.Department, models.Town, models.Area
]
def geo_serialization(archive=False, return_empty_types=False,
archive_name=None, no_geo=True):
result = generic_get_results(GEO_MODEL_LIST, "common_geo", no_geo=no_geo)
full_archive = archive_serialization(
result, archive_dir="common_geo", archive=archive,
return_empty_types=return_empty_types, archive_name=archive_name)
return full_archive
DIRECTORY_MODEL_LIST = [
models.Organization, models.Person, models.Author
]
def directory_serialization(archive=False, return_empty_types=False,
archive_name=None):
result = generic_get_results(DIRECTORY_MODEL_LIST, "common_directory")
full_archive = archive_serialization(
result, archive_dir="common_directory", archive=archive,
return_empty_types=return_empty_types, archive_name=archive_name)
return full_archive
def document_serialization(archive=False, return_empty_types=False,
archive_name=None, operation_queryset=None,
site_queryset=None, cr_queryset=None,
find_queryset=None, warehouse_queryset=None):
result_queryset = {}
get_queryset_attr = None
if operation_queryset:
get_queryset_attr = {"operation_queryset": operation_queryset,
"get_queryset": True}
elif site_queryset:
get_queryset_attr = {"site_queryset": site_queryset,
"get_queryset": True}
elif cr_queryset:
get_queryset_attr = {"cr_queryset": cr_queryset,
"get_queryset": True}
elif find_queryset:
get_queryset_attr = {"find_queryset": find_queryset,
"get_queryset": True}
elif warehouse_queryset:
get_queryset_attr = {"warehouse_queryset": warehouse_queryset,
"get_queryset": True}
if get_queryset_attr:
queries = operation_serialization(**get_queryset_attr)
queries.update(cr_serialization(**get_queryset_attr))
queries.update(find_serialization(**get_queryset_attr))
queries.update(warehouse_serialization(**get_queryset_attr))
q = None
for model, attr in (
("Operation", "operations"),
("ArchaeologicalSite", "sites"),
("ContextRecord", "context_records"),
("Find", "finds"),
("Warehouse", "warehouses"),
("Container", "containers")):
values = queries[model].values_list("id", flat=True)
base_q = Q(**{attr + "__id__in": values})
if not q:
q = base_q
else:
q |= base_q
result_queryset["Document"] = models.Document.objects.filter(q)
result = generic_get_results([models.Document], "documents",
result_queryset=result_queryset)
media_archive = None
if archive:
media_archive = generic_archive_files([models.Document],
result_queryset=result_queryset)
full_archive = archive_serialization(
result, archive_dir="documents", archive=archive,
return_empty_types=return_empty_types, archive_name=archive_name)
if not media_archive:
return full_archive
with ZipFile(full_archive, 'a') as current_zip:
current_zip.write(media_archive, arcname="media.zip")
return full_archive
def full_serialization(operation_queryset=None, site_queryset=None,
cr_queryset=None, find_queryset=None,
warehouse_queryset=None):
archive_name = type_serialization()
conf_serialization(archive_name=archive_name)
importer_serialization(archive_name=archive_name)
geo_serialization(archive_name=archive_name)
directory_serialization(archive_name=archive_name)
document_serialization(archive_name=archive_name)
operation_serialization(
archive_name=archive_name, operation_queryset=operation_queryset,
site_queryset=site_queryset, cr_queryset=cr_queryset,
find_queryset=find_queryset, warehouse_queryset=warehouse_queryset)
cr_serialization(
archive_name=archive_name, operation_queryset=operation_queryset,
site_queryset=site_queryset, cr_queryset=cr_queryset,
find_queryset=find_queryset, warehouse_queryset=warehouse_queryset)
find_serialization(
archive_name=archive_name, operation_queryset=operation_queryset,
site_queryset=site_queryset, cr_queryset=cr_queryset,
find_queryset=find_queryset, warehouse_queryset=warehouse_queryset)
warehouse_serialization(
archive_name=archive_name, operation_queryset=operation_queryset,
site_queryset=site_queryset, cr_queryset=cr_queryset,
find_queryset=find_queryset, warehouse_queryset=warehouse_queryset)
def restore_serialized(archive_name, delete_existing=False):
with zipfile.ZipFile(archive_name, "r") as zip_file:
# check version
info = json.loads(zip_file.read("info.json").decode("utf-8"))
if info["serialize-version"] != SERIALIZATION_VERSION:
raise ValueError(
"This dump version: {} is not managed by this Ishtar "
"installation".format(info["serialize-version"])
)
DIRS = (
("types", [None]),
("common_configuration", CONF_MODEL_LIST),
("common_imports", IMPORT_MODEL_LIST),
("common_geo", GEO_MODEL_LIST),
("common_directory", DIRECTORY_MODEL_LIST),
("documents", [models.Document]),
("operations", OPERATION_MODEL_LIST),
("context_records", CR_MODEL_LIST),
("finds", FIND_MODEL_LIST),
("warehouse", WAREHOUSE_MODEL_LIST),
)
namelist = zip_file.namelist()
for current_dir, model_list in DIRS:
for current_model in model_list:
for json_filename in namelist:
path = json_filename.split(os.sep)
if len(path) != 2 or path[0] != current_dir:
continue
model = get_model_from_filename(path[-1])
if current_model and current_model != model:
continue
if delete_existing:
model.objects.all().delete()
data = zip_file.read(json_filename).decode("utf-8")
for obj in deserialize("json", data):
obj.save()
# restore media
if "media.zip" in namelist:
with tempfile.TemporaryDirectory() as tmp_dir_name:
zip_file.extract("media.zip", tmp_dir_name)
with zipfile.ZipFile(
tmp_dir_name + os.sep + "media.zip", 'r') as media_zip:
media_zip.extractall(settings.MEDIA_ROOT)
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