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csw_harvester.py
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csw_harvester.py
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import json
import logging
import ckanext.dcatapit.harvesters.utils as utils
from ckan import model
from ckan.model import Session
from ckan.plugins.core import SingletonPlugin
from ckanext.spatial.harvesters.csw import CSWHarvester
from ckanext.spatial.model import ISODocument
from ckanext.spatial.model import ISOElement
from ckanext.spatial.model import ISOKeyword
from ckanext.spatial.model import ISOResponsibleParty
from ckanext.dcatapit.model import License
from ckanext.dcatapit import interfaces
log = logging.getLogger(__name__)
ISODocument.elements.append(
ISOResponsibleParty(
name="cited-responsible-party",
search_paths=[
"gmd:identificationInfo/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty",
"gmd:identificationInfo/srv:SV_ServiceIdentification/gmd:citation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty"
],
multiplicity="1..*",
)
)
ISODocument.elements.append(
ISOElement(
name="conformity-specification-title",
search_paths=[
"gmd:dataQualityInfo/gmd:DQ_DataQuality/gmd:report/gmd:DQ_DomainConsistency/gmd:result/gmd:DQ_ConformanceResult/gmd:specification/gmd:CI_Citation/gmd:title/gco:CharacterString/text()"
],
multiplicity="1",
))
ISOKeyword.elements.append(
ISOElement(
name="thesaurus-title",
search_paths=[
"gmd:thesaurusName/gmd:CI_Citation/gmd:title/gco:CharacterString/text()",
],
multiplicity="1",
))
ISOKeyword.elements.append(
ISOElement(
name="thesaurus-identifier",
search_paths=[
"gmd:thesaurusName/gmd:CI_Citation/gmd:identifier/gmd:MD_Identifier/gmd:code/gco:CharacterString/text()",
],
multiplicity="1",
))
class DCATAPITCSWHarvester(CSWHarvester, SingletonPlugin):
_dcatapit_config = {
'dataset_themes': [{'theme': 'OP_DATPRO', 'subthemes': []}],
'dataset_places': None,
'dataset_languages': 'ITA',
'frequency': 'UNKNOWN',
'agents': {
'publisher': {
'code': 'temp_ipa',
'role': 'publisher',
'code_regex': {
'regex': '\(([^)]+)\:([^)]+)\)',
'groups': [2] # optional, dependes by the regular expression
},
'name_regex': {
'regex': '([^(]*)(\(IPA[^)]*\))(.+)',
'groups': [1, 3] # optional, dependes by the regular expression
}
},
'owner': {
'code': 'temp_ipa',
'role': 'owner',
'code_regex': {
'regex': '\(([^)]+)\:([^)]+)\)',
'groups': [2] # optional, dependes by the regular expression
},
'name_regex': {
'regex': '([^(]*)(\(IPA[^)]*\))(.+)',
'groups': [1, 3] # optional, dependes by the regular expression
}
},
'author': {
'code': 'temp_ipa',
'role': 'author',
'code_regex': {
'regex': '\(([^)]+)\:([^)]+)\)',
'groups': [2] # optional, dependes by the regular expression
},
'name_regex': {
'regex': '([^(]*)(\(IPA[^)]*\))(.+)',
'groups': [1, 3] # optional, dependes by the regular expression
}
}
},
'controlled_vocabularies': {
'dcatapit_skos_theme_id': 'theme.data-theme-skos',
'dcatapit_skos_places_id': 'theme.places-skos'
}
}
def info(self):
return {
'name': 'DCAT_AP-IT CSW Harvester',
'title': 'DCAT_AP-IT CSW Harvester',
'description': 'DCAT_AP-IT Harvester for harvesting dcatapit fields from CWS',
'form_config_interface': 'Text'
}
def get_package_dict(self, iso_values, harvest_object):
package_dict = super(DCATAPITCSWHarvester, self).get_package_dict(iso_values, harvest_object)
mapping_frequencies_to_mdr_vocabulary = self.source_config.get('mapping_frequencies_to_mdr_vocabulary', \
utils._mapping_frequencies_to_mdr_vocabulary)
mapping_languages_to_mdr_vocabulary = self.source_config.get('mapping_languages_to_mdr_vocabulary', \
utils._mapping_languages_to_mdr_vocabulary)
self._ckan_locales_mapping = self.source_config.get('ckan_locales_mapping') or utils._ckan_locales_mapping
default_values = self.source_config.get('default_values') or {}
dcatapit_config = self.source_config.get('dcatapit_config', self._dcatapit_config)
#if dcatapit_config and not all(name in dcatapit_config for name in self._dcatapit_config):
# dcatapit_config = self._dcatapit_config
# log.warning('Some keys are missing in dcatapit_config configuration property, \
# keyes to use are: dataset_theme, dataset_language, agent_code, frequency, \
# agent_code_regex, org_name_regex and dcatapit_skos_theme_id. Using defaults')
#elif not dcatapit_config:
# dcatapit_config = self._dcatapit_config
controlled_vocabularies = dcatapit_config.get('controlled_vocabularies', \
self._dcatapit_config.get('controlled_vocabularies'))
agents = dcatapit_config.get('agents', self._dcatapit_config.get('agents'))
# ------------------------------#
# MANDATORY FOR DCAT-AP_IT #
# ------------------------------#
# -- identifier -- #
identifier = iso_values["guid"]
package_dict['extras'].append({'key': 'identifier', 'value': identifier})
default_agent_code = identifier.split(':')[0] if ':' in identifier else None
# -- theme -- #
dataset_themes = []
if iso_values["keywords"]:
default_vocab_id = self._dcatapit_config.get('controlled_vocabularies').get('dcatapit_skos_theme_id')
dataset_themes = utils.get_controlled_vocabulary_values('eu_themes', \
controlled_vocabularies.get('dcatapit_skos_theme_id', default_vocab_id), iso_values["keywords"])
if dataset_themes:
dataset_themes = list(set(dataset_themes))
dataset_themes = [{'theme': str(l), 'subthemes': []} for l in dataset_themes]
else:
dataset_themes = default_values.get('dataset_theme')
if isinstance(dataset_themes, (str, unicode,)):
dataset_themes = [{'theme': dt} for dt in dataset_themes.strip('{}').split(',')]
log.info("Medatata harvested dataset themes: %r", dataset_themes)
package_dict['extras'].append({'key': 'theme', 'value': json.dumps(dataset_themes)})
# -- publisher -- #
citedResponsiblePartys = iso_values["cited-responsible-party"]
agent_name, agent_code = utils.get_responsible_party(citedResponsiblePartys, agents.get('publisher', \
self._dcatapit_config.get('agents').get('publisher')))
package_dict['extras'].append({'key': 'publisher_name', 'value': agent_name})
package_dict['extras'].append({'key': 'publisher_identifier', 'value': agent_code or default_agent_code})
# -- modified -- #
revision_date = iso_values["date-updated"] or iso_values["date-released"]
package_dict['extras'].append({'key': 'modified', 'value': revision_date})
# -- frequency -- #
updateFrequency = iso_values["frequency-of-update"]
package_dict['extras'].append({'key': 'frequency', 'value': \
mapping_frequencies_to_mdr_vocabulary.get(updateFrequency, \
dcatapit_config.get('frequency', self._dcatapit_config.get('frequency')))})
# -- rights_holder -- #
citedResponsiblePartys = iso_values["cited-responsible-party"]
agent_name, agent_code = utils.get_responsible_party(citedResponsiblePartys, \
agents.get('owner', self._dcatapit_config.get('agents').get('owner')))
package_dict['extras'].append({'key': 'holder_name', 'value': agent_name})
package_dict['extras'].append({'key': 'holder_identifier', 'value': agent_code or default_agent_code})
# -----------------------------------------------#
# OTHER FIELDS NOT MANDATORY FOR DCAT_AP-IT #
# -----------------------------------------------#
# -- alternate_identifier nothing to do -- #
# -- issued -- #
publication_date = iso_values["date-released"]
package_dict['extras'].append({'key': 'issued', 'value': publication_date})
# -- geographical_name -- #
dataset_places = []
if iso_values["keywords"]:
default_vocab_id = self._dcatapit_config.get('controlled_vocabularies').get('dcatapit_skos_theme_id')
dataset_places = utils.get_controlled_vocabulary_values('places', \
controlled_vocabularies.get('dcatapit_skos_places_id', default_vocab_id), iso_values["keywords"])
if dataset_places and len(dataset_places) > 1:
dataset_places = list(set(dataset_places))
dataset_places = '{' + ','.join(str(l) for l in dataset_places) + '}'
else:
dataset_places = dataset_places[0] if dataset_places and len(dataset_places) > 0 else dcatapit_config.get('dataset_places', \
self._dcatapit_config.get('dataset_places'))
if dataset_places:
log.info("Medatata harvested dataset places: %r", dataset_places)
package_dict['extras'].append({'key': 'geographical_name', 'value': dataset_places})
# -- geographical_geonames_url nothing to do -- #
# -- language -- #
dataset_languages = iso_values["dataset-language"]
language = None
if dataset_languages and len(dataset_languages) > 0:
languages = []
for language in dataset_languages:
lang = mapping_languages_to_mdr_vocabulary.get(language, None)
if lang:
languages.append(lang)
if len(languages) > 1:
language = '{' + ','.join(str(l) for l in languages) + '}'
else:
language = languages[0] if len(languages) > 0 else dcatapit_config.get('dataset_languages', \
self._dcatapit_config.get('dataset_languages'))
log.info("Medatata harvested dataset languages: %r", language)
else:
language = dcatapit_config.get('dataset_language')
package_dict['extras'].append({'key': 'language', 'value': language})
# temporal_coverage
# ##################
temporal_coverage = []
temporal_start = None
temporal_end = None
for key in ['temporal-extent-begin', 'temporal-extent-end']:
if len(iso_values[key]) > 0:
temporal_extent_value = iso_values[key][0]
if key == 'temporal-extent-begin':
temporal_start = temporal_extent_value
if key == 'temporal-extent-end':
temporal_end = temporal_extent_value
if temporal_start:
temporal_coverage.append({'temporal_start': temporal_start,
'temporal_end': temporal_end})
if temporal_coverage:
package_dict['extras'].append({'key': 'temporal_coverage', 'value': json.dumps(temporal_coverage)})
# conforms_to
# ##################
conforms_to_identifier = iso_values["conformity-specification-title"]
conforms_to_locale = self._ckan_locales_mapping.get(iso_values["metadata-language"], 'it').lower()
conforms_to = {'identifier': conforms_to_identifier,
'title': {conforms_to_locale: conforms_to_identifier}}
if conforms_to:
package_dict['extras'].append({'key': 'conforms_to', 'value': json.dumps([conforms_to])})
# creator
# ###############
# -- creator -- #
citedResponsiblePartys = iso_values["cited-responsible-party"]
agent_name, agent_code = utils.get_responsible_party(citedResponsiblePartys, \
agents.get('author', self._dcatapit_config.get('agents').get('author')))
agent_code = agent_code or default_agent_code
if (agent_name and agent_code):
creator = {}
creator_lang = self._ckan_locales_mapping.get(iso_values["metadata-language"], 'it').lower()
creator['creator_name'] = {creator_lang: agent_name}
creator['creator_identifier'] = agent_code
package_dict['extras'].append({'key': 'creator', 'value': json.dumps([creator])})
# ckan_license
# ##################
ckan_license = None
use_constraints = iso_values.get('use-constraints')
if use_constraints:
use_constraints = use_constraints[0]
import ckan.logic.action.get as _license
license_list = _license.license_list({'model': model, 'session': Session, 'user': 'harvest'}, {})
for license in license_list:
if use_constraints == str(license.get('id')) or use_constraints == str(license.get('url')) or (str(license.get('id')) in use_constraints.lower()):
ckan_license = license
break
if ckan_license:
package_dict['license_id'] = ckan_license.get('id')
else:
default_license = self.source_config.get('default_license')
if default_license:
package_dict['license_id'] = default_license
# -- license handling -- #
interfaces.populate_resource_license(package_dict)
# End of processing, return the modified package
return package_dict