async def get(request: web.Request):
hooks = request.app.hooks
docid = request.match_info['dataset']
etag_if_none_match = conditional.parse_if_header(
request, conditional.HEADER_IF_NONE_MATCH)
if etag_if_none_match == '*':
raise web.HTTPBadRequest(
body='Endpoint does not support * in the If-None-Match header.')
# Now we know etag_if_none_match is either None or a set.
try:
doc, etag = await hooks.storage_retrieve(app=request.app,
docid=docid,
etags=etag_if_none_match)
except KeyError:
raise web.HTTPNotFound()
if doc is None:
return web.Response(status=304, headers={'Etag': etag})
canonical_doc = await hooks.mds_canonicalize(app=request.app, data=doc)
canonical_doc = await hooks.mds_after_storage(app=request.app,
data=canonical_doc,
doc_id=docid)
if canonical_doc['ams:status'] not in ('beschikbaar', 'in_onderzoek'):
scopes = request.authz_scopes if hasattr(request,
"authz_scopes") else {}
extra_read_access = 'CAT/R' in scopes
if not extra_read_access:
return web.HTTPForbidden()
return web.json_response(canonical_doc,
headers={
'Etag': etag,
'content_type': 'application/ld+json'
})
async def link_redirect(request: web.Request):
dataset = request.match_info['dataset']
distribution = request.match_info['distribution']
etag_if_none_match = conditional.parse_if_header(
request, conditional.HEADER_IF_NONE_MATCH)
if etag_if_none_match == '*':
raise web.HTTPBadRequest(
body='Endpoint does not support * in the If-None-Match header.')
try:
doc, etag = await request.app.hooks.storage_retrieve(
app=request.app, docid=dataset, etags=etag_if_none_match)
except KeyError:
raise web.HTTPNotFound()
if doc is None:
raise web.HTTPNotModified(headers={'ETag': etag})
headers = {'ETag': etag}
resource_url = None
for dist in doc.get('dcat:distribution', []):
if dist.get('dc:identifier', None) == distribution:
resource_url = dist.get('dcat:accessURL', None)
break
if resource_url is None:
raise web.HTTPNotFound(headers=headers)
raise web.HTTPTemporaryRedirect(location=resource_url, headers=headers)
async def delete(request: web.Request):
given_id = request.match_info['dataset']
etag_if_match = conditional.parse_if_header(request,
conditional.HEADER_IF_MATCH)
if etag_if_match is None or etag_if_match == '*':
raise web.HTTPBadRequest(
text='Must provide a If-Match header containing one or more ETags.'
)
try:
await request.app.hooks.storage_delete(app=request.app,
docid=given_id,
etags=etag_if_match)
except KeyError:
raise web.HTTPNotFound()
return web.Response(status=204, content_type='text/plain')
async def put(request: web.Request):
hooks = request.app.hooks
scopes = request.authz_scopes
is_redact_only = 'CAT/W' not in scopes
# Grab the document from the request body and canonicalize it.
try:
doc = await request.json()
except json.decoder.JSONDecodeError:
raise web.HTTPBadRequest(text='invalid json')
doc['ams:modifiedby'] = request.authz_subject
canonical_doc = await hooks.mds_canonicalize(app=request.app, data=doc)
if is_redact_only and canonical_doc['ams:status'] == 'beschikbaar':
raise web.HTTPForbidden()
# Make sure the docid in the path corresponds to the ids given in the
# document, if any. The assumption is that request.path (which corresponds
# to the path part of the incoming HTTP request) is the path as seen by
# the client. This is not necessarily true.
doc_id = request.match_info['dataset']
# Let the metadata plugin grab the full-text search representation
searchable_text = await hooks.mds_full_text_search_representation(
data=canonical_doc)
# Figure out the mode (insert / update) of the request.
etag_if_match = conditional.parse_if_header(request,
conditional.HEADER_IF_MATCH)
etag_if_none_match = conditional.parse_if_header(
request, conditional.HEADER_IF_NONE_MATCH)
# Can't accept a value in both headers
if etag_if_match is not None and etag_if_none_match is not None:
raise web.HTTPBadRequest(
body='Endpoint supports either If-Match or If-None-Match in a '
'single request, not both')
# If-Match: {etag, ...} is for updates
if etag_if_match is not None:
if etag_if_match == '*':
raise web.HTTPBadRequest(
body='Endpoint does not support If-Match: *. Must provide one '
'or more Etags.')
try:
old_doc, _etag = await hooks.storage_retrieve(app=request.app,
docid=doc_id,
etags=None)
except KeyError:
_logger.exception('precondition failed')
raise web.HTTPPreconditionFailed()
canonical_doc = await hooks.mds_before_storage(app=request.app,
data=canonical_doc,
old_data=old_doc)
try:
new_etag = await hooks.storage_update(
app=request.app,
docid=doc_id,
doc=canonical_doc,
searchable_text=searchable_text,
etags=etag_if_match,
iso_639_1_code="nl")
except ValueError:
_logger.exception('precondition failed')
raise web.HTTPPreconditionFailed()
await notify_data_changed(request.app)
retval = web.Response(status=204, headers={'Etag': new_etag})
else:
# If-None-Match: * is for creates
if etag_if_none_match != '*':
raise web.HTTPBadRequest(
body='For inserts of new documents, provide If-None-Match: *')
canonical_doc = await hooks.mds_before_storage(app=request.app,
data=canonical_doc)
try:
new_etag = await hooks.storage_create(
app=request.app,
docid=doc_id,
doc=canonical_doc,
searchable_text=searchable_text,
iso_639_1_code="nl")
except KeyError:
_logger.exception('precondition failed')
raise web.HTTPPreconditionFailed()
await notify_data_changed(request.app)
retval = web.Response(status=201,
headers={'Etag': new_etag},
content_type='text/plain')
return retval
