def _create_metadata_record(self, contact: Organization,
group: MrMapGroup):
""" Creates a Metadata record from the OGCWebMapService
Args:
contact (Organization): The contact organization for this metadata record
group (MrMapGroup): The owner/creator group
Returns:
metadata (Metadata): The persisted metadata record
"""
metadata = Metadata()
md_type = MetadataEnum.SERVICE.value
metadata.metadata_type = md_type
if self.service_file_iso_identifier is None:
# We didn't found any file identifier in the document -> we create one
self.service_file_iso_identifier = uuid.uuid4()
metadata.title = self.service_identification_title
metadata.abstract = self.service_identification_abstract
metadata.online_resource = self.service_provider_onlineresource_linkage
metadata.capabilities_original_uri = self.service_connect_url
metadata.access_constraints = self.service_identification_accessconstraints
metadata.fees = self.service_identification_fees
if self.service_bounding_box is not None:
metadata.bounding_geometry = self.service_bounding_box
metadata.identifier = self.service_file_identifier
metadata.is_active = False
metadata.created_by = group
metadata.contact = contact
# Save metadata instance to be able to add M2M entities
metadata.save()
return metadata
def _fill_metadata_dataset_identification_form(data: dict, metadata: Metadata, dataset: Dataset, user: MrMapUser):
""" Fills form data into Metadata/Dataset records
Args:
data (dict): Cleaned form data
metadata (dict): The metadata record
dataset (dict): The dataset record
user: The performing user
Returns:
"""
metadata.title = data.get("title", None)
metadata.abstract = data.get("abstract", None)
metadata.created = data.get("date_stamp", None)
metadata.created_by = data.get("created_by", None)
dataset.language_code = data.get("language_code", None)
dataset.character_set_code = data.get("character_set_code", None)
dataset.date_stamp = data.get("date_stamp", None)
ref_systems = data.get("reference_system", [])
metadata.reference_system.clear()
for ref_system in ref_systems:
metadata.reference_system.add(ref_system)
additional_related_objects = data.get("additional_related_objects", [])
MetadataRelation.objects.filter(to_metadata=metadata, origin=ResourceOriginEnum.EDITOR.value).delete()
for additional_object in additional_related_objects:
additional_object.add_metadata_relation(to_metadata=metadata,
relation_type=MetadataRelationEnum.DESCRIBES.value,
internal=True,
origin=ResourceOriginEnum.EDITOR.value)
def _fill_metadata_db_model(self, metadata: Metadata):
""" Fills a Metadata db record from the ISOMetadata data
Args:
metadata (Metadata): The old/empty object
Returns:
metadata (Metadata): The metadata object
"""
metadata.identifier = self.file_identifier
metadata.abstract = self.abstract
metadata.access_constraints = self.access_constraints
# Take the polygon with the largest area as bounding geometry
if len(self.polygonal_extent_exterior) > 0:
max_area_poly = None
for poly in self.polygonal_extent_exterior:
if max_area_poly is None:
max_area_poly = poly
if max_area_poly.area < poly.area:
max_area_poly = poly
metadata.bounding_geometry = max_area_poly
try:
metadata.contact = Organization.objects.get_or_create(
organization_name=self.responsible_party,
email=self.contact_email,
)[0]
except MultipleObjectsReturned:
# okay, we need to create a unique organization
# "unique" since it will only be identified using organization_name and email
metadata.contact = Organization.objects.get_or_create(
organization_name="{}#1".format(self.responsible_party),
email=self.contact_email,
)[0]
metadata.is_inspire_conform = self.inspire_interoperability
metadata.metadata_url = self.uri
metadata.last_remote_change = self.last_change_date
metadata.spatial_res_type = self.spatial_res_type
metadata.spatial_res_value = self.spatial_res_val
if self.title is None:
self.title = "BROKEN"
metadata.title = self.title
metadata.origin = self.origin
metadata.is_broken = self.is_broken
metadata.save()
# save legal dates and reports
for report in self.legal_reports:
report.date.save()
report.save()
metadata.legal_reports.add(report)
for date in self.legal_dates:
date.save()
metadata.legal_dates.add(date)
metadata.save()
return metadata
def create_service_model_instance(self, user: MrMapUser, register_group,
register_for_organization, external_auth,
is_update_candidate_for):
""" Map all data from the OGCCatalogueService class to their database models
Args:
user (MrMapUser): The user which performs the action
register_group (Group): The group which is used to register this service
register_for_organization (Organization): The organization for which this service is being registered
external_auth (ExternalAuthentication): The external authentication object
Returns:
service (Service): Service instance, contains all information, ready for persisting!
"""
if current_task:
current_task.update_state(state=states.STARTED,
meta={
'current':
PROGRESS_STATUS_AFTER_PARSING,
'phase': 'Persisting...',
})
md = Metadata()
md_type = MetadataEnum.CATALOGUE.value
md.metadata_type = md_type
md.title = self.service_identification_title
md.identifier = self.service_file_identifier
md.abstract = self.service_identification_abstract
md.online_resource = self.service_provider_onlineresource_linkage
md.contact = self._create_contact_organization_record()
md.authority_url = self.service_provider_url
md.access_constraints = self.service_identification_accessconstraints
md.fees = self.service_identification_fees
md.created_by = register_group
md.capabilities_original_uri = self.service_connect_url
if self.service_bounding_box is not None:
md.bounding_geometry = self.service_bounding_box
# Save metadata record so we can use M2M or id of record later
md.save()
md.identifier = str(md.id) if md.identifier is None else md.identifier
# Keywords
for kw in self.service_identification_keywords:
if kw is None:
continue
keyword = Keyword.objects.get_or_create(keyword=kw)[0]
md.keywords.add(keyword)
md.formats.add(*self.formats_list)
md.save()
service = self._create_service_record(register_group,
register_for_organization, md,
is_update_candidate_for)
return service
def _create_metadata_record(self, parent_service: Service,
group: MrMapGroup):
""" Creates a Metadata record from the OGCLayer object
Args:
self (OGCLayer): The OGCLayer object (result of parsing)
parent_service (Service): The parent Service object
group (MrMapGroup): The creator/owner group
Returns:
metadata (Metadata): The persisted metadata object
"""
metadata = Metadata()
md_type = MetadataEnum.LAYER.value
metadata.metadata_type = md_type
metadata.title = self.title
metadata.abstract = self.abstract
metadata.online_resource = parent_service.metadata.online_resource
metadata.capabilities_original_uri = parent_service.metadata.capabilities_original_uri
metadata.identifier = self.identifier
metadata.contact = parent_service.metadata.contact
metadata.access_constraints = parent_service.metadata.access_constraints
metadata.is_active = False
metadata.created_by = group
# Save metadata to use id afterwards
metadata.save()
# create bounding box polygon
bounding_points = ((float(self.capability_bbox_lat_lon["minx"]),
float(self.capability_bbox_lat_lon["miny"])),
(float(self.capability_bbox_lat_lon["minx"]),
float(self.capability_bbox_lat_lon["maxy"])),
(float(self.capability_bbox_lat_lon["maxx"]),
float(self.capability_bbox_lat_lon["maxy"])),
(float(self.capability_bbox_lat_lon["maxx"]),
float(self.capability_bbox_lat_lon["miny"])),
(float(self.capability_bbox_lat_lon["minx"]),
float(self.capability_bbox_lat_lon["miny"])))
metadata.bounding_geometry = Polygon(bounding_points)
metadata.save()
return metadata
def overwrite_metadata(original_md: Metadata, custom_md: Metadata,
editor_form):
""" Overwrites the original data with the custom date
Args:
original_md (Metadata): The original Metadata object
custom_md (Metadata): The custom Metadata object
editor_form: The editor form which holds additional data
Returns:
nothing
"""
original_md.title = custom_md.title
original_md.abstract = custom_md.abstract
original_md.access_constraints = custom_md.access_constraints
# we need the metadata_url to reset dataset metadatas
# original_md.metadata_url = custom_md.metadata_url
original_md.licence = custom_md.licence
# get db objects from values
# Keyword updating
keywords = editor_form.cleaned_data["keywords"]
original_md.keywords.clear()
for kw in keywords:
keyword = Keyword.objects.get_or_create(keyword=kw)[0]
original_md.keywords.add(keyword)
# Language updating
original_md.language_code = editor_form.cleaned_data["language_code"]
# Categories updating
# Categories are provided as id's to prevent language related conflicts
try:
categories = editor_form.cleaned_data["categories"]
original_md.categories.clear()
for category in categories:
original_md.categories.add(category)
except KeyError:
pass
# Categories are inherited by subelements
subelements = original_md.get_described_element().get_subelements(
).select_related('metadata')
for subelement in subelements:
subelement.metadata.categories.clear()
for category in categories:
subelement.metadata.categories.add(category)
# change capabilities document so that all sensitive elements (links) are proxied
if original_md.use_proxy_uri != custom_md.use_proxy_uri:
if custom_md.use_proxy_uri == 'on':
original_md.set_proxy(True)
else:
original_md.set_proxy(False)
# save metadata
original_md.is_custom = True
original_md.save()
if original_md.is_dataset_metadata:
overwrite_dataset_metadata_document(original_md)
else:
overwrite_capabilities_document(original_md)
def _persist_metadata(self, md_data_entry: dict):
""" Creates real Metadata model records from the parsed data
Args:
md_data_entry (dict):
Returns:
metadata (Metadata): The persisted metadata object
"""
_id = md_data_entry["id"]
# Remove this id from the set of metadata which shall be deleted in the end.
try:
self.deleted_metadata.remove(_id)
except KeyError:
pass
try:
md = Metadata.objects.get(identifier=_id, )
is_new = False
if md.last_remote_change == md_data_entry["date_stamp"]:
# Nothing to do here!
return
except ObjectDoesNotExist:
md = Metadata(identifier=_id)
is_new = True
md.access_constraints = md_data_entry.get("access_constraints", None)
md.created_by = self.harvesting_group
md.origin = ResourceOriginEnum.CATALOGUE.value
md.last_remote_change = md_data_entry.get("date_stamp", None)
md.title = md_data_entry.get("title", None)
md.contact = md_data_entry.get("contact", None)
md.language_code = md_data_entry.get("language_code", None)
md.metadata_type = md_data_entry.get("metadata_type", None)
md.abstract = md_data_entry.get("abstract", None)
md.bounding_geometry = md_data_entry.get("bounding_geometry", None)
formats = md_data_entry.get("formats", [])
md.is_active = True
md.capabilities_original_uri = md_data_entry.get(
"capabilities_original_url", None)
try:
# Improve speed for keyword get-create by fetching (filter) all existing ones and only perform
# get_or_create on the ones that do not exist yet. Speed up by ~50% for large amount of data
existing_kws = Keyword.objects.filter(
keyword__in=md_data_entry["keywords"])
existing_kws = [kw.keyword for kw in existing_kws]
new_kws = [
kw for kw in md_data_entry["keywords"]
if kw not in existing_kws
]
[Keyword.objects.get_or_create(keyword=kw)[0] for kw in new_kws]
kws = Keyword.objects.filter(keyword__in=md_data_entry["keywords"])
# Same for MimeTypes
existing_formats = MimeType.objects.filter(
mime_type__in=md_data_entry["formats"])
existing_formats = [
_format.mime_type for _format in existing_formats
]
new_formats = [
_format for _format in md_data_entry["formats"]
if _format not in existing_formats
]
[
MimeType.objects.get_or_create(mime_type=_format)[0]
for _format in new_formats
]
formats = MimeType.objects.filter(
mime_type__in=md_data_entry["formats"])
with transaction.atomic():
if len(md_data_entry["categories"]) > 0:
q = Q()
for cat in md_data_entry["categories"]:
q |= Q(title_EN__iexact=cat)
categories = Category.objects.filter(q)
else:
categories = []
for link in md_data_entry.get("links", []):
url = link.get("link", None)
if url is None:
continue
generic_url = GenericUrl()
generic_url.description = "[HARVESTED URL] \n{}".format(
link.get("description", ""))
generic_url.method = "Get"
generic_url.url = url
generic_url.save()
md.additional_urls.add(generic_url)
md.save(add_monitoring=False)
md.keywords.add(*kws)
md.categories.add(*categories)
md.formats.add(*formats)
# To reduce runtime, we only create a new MetadataRelation if we are sure there hasn't already been one.
# Using get_or_create increases runtime on existing metadata too much!
if is_new:
md.add_metadata_relation(
to_metadata=self.metadata,
relation_type=MetadataRelationEnum.HARVESTED_THROUGH.
value,
origin=ResourceOriginEnum.CATALOGUE.value)
parent_id = md_data_entry["parent_id"]
# Add the found parent_id to the parent_child map!
if parent_id is not None:
if self.parent_child_map.get(parent_id, None) is None:
self.parent_child_map[parent_id] = [md]
else:
self.parent_child_map[parent_id].append(md)
except (IntegrityError, DataError) as e:
csw_logger.error(
CSW_ERROR_LOG_TEMPLATE.format(md.identifier,
self.metadata.title, e))