def vread(request, resource_type, id, vid):
interaction_type = 'vread'
#Check if this interaction type and resource type combo is allowed.
deny = check_access_interaction_and_resource_type(resource_type, interaction_type)
if deny:
#If not allowed, return a 4xx error.
return deny
"""VRead Interaction"""
# Example client use in curl:
# curl -X GET http://127.0.0.1:8000/fhir/Practitioner/12345/_history/1
if request.method != 'GET':
msg = "HTTP method %s not supported at this URL." % (request.method)
return kickout_400(msg)
#testing direct response
return FHIR_BACKEND.vread(request, resource_type, id, vid)
od = OrderedDict()
od['request_method']= request.method
od['interaction_type'] = "vread"
od['resource_type'] = resource_type
od['id'] = id
od['vid'] = vid
od['note'] = "This is only a stub for future implementation"
return HttpResponse(json.dumps(od, indent=4),
content_type="application/json")
def vread(request, resource_type, id, vid):
interaction_type = 'vread'
#Check if this interaction type and resource type combo is allowed.
deny = check_access_interaction_and_resource_type(resource_type,
interaction_type)
if deny:
#If not allowed, return a 4xx error.
return deny
"""VRead Interaction"""
# Example client use in curl:
# curl -X GET http://127.0.0.1:8000/fhir/Practitioner/12345/_history/1
if request.method != 'GET':
msg = "HTTP method %s not supported at this URL." % (request.method)
return kickout_400(msg)
#testing direct response
return FHIR_BACKEND.vread(request, resource_type, id, vid)
od = OrderedDict()
od['request_method'] = request.method
od['interaction_type'] = "vread"
od['resource_type'] = resource_type
od['id'] = id
od['vid'] = vid
od['note'] = "This is only a stub for future implementation"
return HttpResponse(json.dumps(od, indent=4),
content_type="application/json")
def search(request, resource_type):
interaction_type = 'search'
#Check if this interaction type and resource type combo is allowed.
deny = check_access_interaction_and_resource_type(resource_type, interaction_type)
if deny:
#If not allowed, return a 4xx error.
return deny
"""Search Interaction"""
# Example client use in curl:
# curl -X GET http://127.0.0.1:8000/fhir/Practitioner?foo=bar
if request.method != 'GET':
msg = "HTTP method %s not supported at this URL." % (request.method)
return kickout_400(msg)
if settings.DEBUG:
print("FHIR_BACKEND in search:",FHIR_BACKEND_FIND )
return FHIR_BACKEND_FIND.find(request, resource_type)
# Move to fhir_io_mongo (Plugable back-end)
od = OrderedDict()
if DF_EXTRA_INFO:
od['request_method']= request.method
od['interaction_type'] = "search"
od['resource_type'] = resource_type
if DF_EXTRA_INFO:
od['search_params'] = request.GET
od['note'] = "This is only a stub for future implementation"
return HttpResponse(json.dumps(od, indent=4),
content_type="application/json")
def search(request, resource_type):
interaction_type = 'search'
#Check if this interaction type and resource type combo is allowed.
deny = check_access_interaction_and_resource_type(resource_type,
interaction_type)
if deny:
#If not allowed, return a 4xx error.
return deny
"""Search Interaction"""
# Example client use in curl:
# curl -X GET http://127.0.0.1:8000/fhir/Practitioner?foo=bar
if request.method != 'GET':
msg = "HTTP method %s not supported at this URL." % (request.method)
return kickout_400(msg)
if settings.DEBUG:
print("FHIR_BACKEND in search:", FHIR_BACKEND_FIND)
return FHIR_BACKEND_FIND.find(request, resource_type)
# Move to fhir_io_mongo (Plugable back-end)
od = OrderedDict()
if DF_EXTRA_INFO:
od['request_method'] = request.method
od['interaction_type'] = "search"
od['resource_type'] = resource_type
if DF_EXTRA_INFO:
od['search_params'] = request.GET
od['note'] = "This is only a stub for future implementation"
return HttpResponse(json.dumps(od, indent=4),
content_type="application/json")
def error_status(r, status_code=404, reason="undefined error occured"):
"""
Generate an error page
based on fhir.utils.kickout_xxx
:param reason:
:param status_code:
:return:
"""
error_detail = r.text
if settings.DEBUG:
if r.text[0] == "<":
error_detail = "xml:"
error_detail += r.text
else:
error_detail = r.json()
if reason == "undefined error occured":
if status_code == 404:
reason = "page not found"
kickout_404(reason)
elif status_code == 403:
reason = "You are not authorised to access this page. Do you need to login?"
kickout_403(reason)
elif status_code == 400:
reason = "There was a problem with the data"
kickout_400(reason)
elif status_code == 301:
reason = "The requested page has been permanently moved"
kickout_301(reason)
elif status_code == 502:
reason = "Bad gateway"
kickout_502(reason)
response = OrderedDict()
response["errors"] = [reason, error_detail]
response["code"] = status_code
return HttpResponse(json.dumps(response, indent=4),
status=status_code,
content_type="application/json")
def error_status(r, status_code=404, reason="undefined error occured"):
"""
Generate an error page
based on fhir.utils.kickout_xxx
:param reason:
:param status_code:
:return:
"""
error_detail = r.text
if settings.DEBUG:
if r.text[0] == "<":
error_detail = "xml:"
error_detail += r.text
else:
error_detail = r.json()
if reason == "undefined error occured":
if status_code == 404:
reason = "page not found"
kickout_404(reason)
elif status_code == 403:
reason = "You are not authorised to access this page. Do you need to login?"
kickout_403(reason)
elif status_code == 400:
reason = "There was a problem with the data"
kickout_400(reason)
elif status_code == 301:
reason = "The requested page has been permanently moved"
kickout_301(reason)
elif status_code == 502:
reason = "Bad gateway"
kickout_502(reason)
response= OrderedDict()
response["errors"] = [reason, error_detail]
response["code"] = status_code
return HttpResponse(json.dumps(response, indent = 4),
status=status_code,
content_type="application/json")
def read_or_update_or_delete(request, resource_type, id):
"""Route to read, update, or delete based on HTTP method FHIR Interaction"""
if request.method == 'GET':
# Read
return read(request, resource_type, id)
elif request.method == 'PUT':
# update
return update(request, resource_type, id)
elif request.method == 'DELETE':
# delete
return delete(request, resource_type, id)
#else:
# Not supported.
msg = "HTTP method %s not supported at this URL." % (request.method)
return kickout_400(msg)
def create(request, resource_type):
"""Create FHIR Interaction"""
# Example client use in curl:
# curl -H "Content-Type: application/json" --data @test.json http://127.0.0.1:8000/fhir/Practitioner
interaction_type = 'create'
# re-route to hello if no resource type is given:
if not resource_type:
return hello(request)
try:
rt = SupportedResourceType.objects.get(resource_name=resource_type)
if interaction_type not in rt.get_supported_interaction_types(
) and request.method == "GET":
# GET means that this is a search so re-route
return search(request, resource_type)
elif interaction_type not in rt.get_supported_interaction_types():
msg = "The interaction %s is not permitted on %s FHIR resources on this FHIR sever." % (
interaction_type, resource_type)
return kickout_403(msg)
except SupportedResourceType.DoesNotExist:
msg = "%s is not a supported resource type on this FHIR server." % (
resource_type)
return kickout_404(msg)
# Catch all for GETs to re-direct to search if CREATE permission is valid
if request.method == "GET":
return search(request, resource_type)
if request.method == 'POST':
# Check if request body is JSON ------------------------
try:
j = json.loads(request.body, object_pairs_hook=OrderedDict)
if type(j) != type({}):
kickout_400(
"The request body did not contain a JSON object i.e. {}.")
except:
return kickout_400("The request body did not contain valid JSON.")
if j.has_key('id'):
return kickout_400(
"Create cannot have an id. Perhaps you meant to perform an update?"
)
# check json_schema is valid
try:
json_schema = json.loads(rt.json_schema,
object_pairs_hook=OrderedDict)
except:
return kickout_500(
"The JSON Schema on the server did not contain valid JSON.")
# Check jsonschema
if json_schema:
try:
validate(j, json_schema)
except ValidationError:
msg = "JSON Schema Conformance Error. %s" % (str(
sys.exc_info()[1][0]))
return kickout_400(msg)
# write_to_mongo - TBD
response = OrderedDict()
response['id'] = str(uuid.uuid4())
meta = OrderedDict()
if j.get('meta').get('versionId'):
meta['versionId'] = j.get('meta').get('versionId')
else:
meta['versionId'] = 1
if j.get('meta').get('lastUpdated'):
meta['lastUpdated'] = j.get('meta').get('lastUpdated')
else:
meta['lastUpdated'] = "%sZ" % (
datetime.datetime.utcnow().isoformat())
meta['id'] = response['id']
response['meta'] = meta
hr = HttpResponse(json.dumps(response, indent=4),
status=201,
content_type="application/json")
hr['Location'] = "%s/%s/%s/_history/%s" % (
"http://127.0.0.1:8000/fhir", resource_type, meta['id'],
meta['versionId'])
return hr
#This is something other than GET or POST (i.e. a GET)
if request.method not in ("GET", "POST"):
od = OrderedDict()
if DF_EXTRA_INFO:
od['request_method'] = request.method
od['interaction_type'] = "create"
od['resource_type'] = resource_type
if DF_EXTRA_INFO:
od['note'] = "Perform an HTTP POST to this URL with the JSON resource as the request body."
return HttpResponse(json.dumps(od, indent=4),
content_type="application/json")
