def fhir_conformance(request, via_oauth=False, *args, **kwargs):
""" Pull and filter fhir Conformance statement
BaseStu3 = "CapabilityStatement"
:param request:
:param via_oauth:
:param args:
:param kwargs:
:return:
"""
crosswalk = None
resource_router = get_resourcerouter()
call_to = FhirServerUrl()
if call_to.endswith('/'):
call_to += 'metadata'
else:
call_to += '/metadata'
pass_params = {'_format': 'json'}
encoded_params = urlencode(pass_params)
pass_params = prepend_q(encoded_params)
r = request_call(request, call_to + pass_params, crosswalk)
text_out = ''
host_path = get_host_url(request, '?')
if r.status_code >= 300:
logger.debug("We have an error code to deal with: %s" % r.status_code)
return HttpResponse(json.dumps(r._content),
status=r.status_code,
content_type='application/json')
rewrite_url_list = build_rewrite_list(crosswalk)
text_in = get_response_text(fhir_response=r)
text_out = post_process_request(request, host_path, text_in,
rewrite_url_list)
od = conformance_filter(text_out, resource_router)
# Append Security to ConformanceStatement
security_endpoint = build_oauth_resource(request, format_type="json")
od['rest'][0]['security'] = security_endpoint
# Fix format values
od['format'] = ['application/json', 'application/fhir+json']
return JsonResponse(od)
def fhir_conformance(request, *args, **kwargs):
""" Pull and filter fhir Conformance statement
BaseDstu2 = "Conformance"
BaseStu3 = "CapabilityStatement"
metadata call
"""
if not request.user.is_authenticated():
return authenticated_home(request)
try:
cx = Crosswalk.objects.get(user=request.user)
except Crosswalk.DoesNotExist:
cx = None
# logger.debug('Crosswalk for %s does not exist' % request.user)
if cx:
call_to = cx.fhir_source.fhir_url
else:
call_to = FhirServerUrl()
resource_type = conformance_or_capability(call_to)
if call_to.endswith('/'):
call_to += 'metadata'
else:
call_to += '/metadata'
pass_params = strip_oauth(request.GET)
# pass_params should be an OrderedDict after strip_auth
# logger.debug("result from strip_oauth:%s" % pass_params)
# Let's store the inbound requested format
# We need to simplify the format call to the backend
# so that we get data we can manipulate
requested_format = request_format(pass_params)
# now we simplify the format/_format request for the back-end
pass_params = strip_format_for_back_end(pass_params)
back_end_format = pass_params['_format']
encoded_params = urlencode(pass_params)
#
# Add ? to front of parameters if needed
pass_params = prepend_q(encoded_params)
# logger.debug("Calling:%s" % call_to + pass_params)
####################################################
####################################################
r = request_call(request, call_to + pass_params, cx,
reverse_lazy('authenticated_home'))
####################################################
####################################################
text_out = ''
host_path = get_host_url(request, '?')
# get 'xml' 'json' or ''
# fmt = get_search_param_format(request.META['QUERY_STRING'])
# force to json
# logger.debug("Format:%s" % back_end_format)
rewrite_url_list = settings.FHIR_SERVER_CONF['REWRITE_FROM']
# print("Starting Rewrite_list:%s" % rewrite_url_list)
text_out = post_process_request(request, back_end_format, host_path,
r.text, rewrite_url_list)
query_string = build_querystring(request.GET.copy())
# logger.debug("Query:%s" % query_string)
if 'xml' in requested_format:
# logger.debug('We got xml back in od')
# logger.debug("is xml filtered?%s" % requested_format)
xml_dom = xml_to_dom(text_out)
text_out = dom_conformance_filter(xml_dom)
# logger.debug("Text from XML function:\n%s\n=========" % text_out)
if 'html' not in requested_format:
return HttpResponse(text_out,
content_type='application'
'/%s' % requested_format)
else:
# logger.debug("Sending text_out for display: %s" % text_out[0:100])
return render(
request, 'bluebutton/default_xml.html', {
'output': text_out,
'content': {
'parameters': query_string,
'resource_type': resource_type,
'request_method': "GET",
'interaction_type': "metadata",
'source': cx.fhir_source.name
}
})
# return HttpResponse( tostring(dict_to_xml('content', od)),
# content_type='application/%s' % fmt)
elif back_end_format == 'json':
# logger.debug('We got json back in od')
od = conformance_filter(text_out, back_end_format)
text_out = pretty_json(od)
if 'html' not in requested_format:
return HttpResponse(text_out,
content_type='application/'
'%s' % requested_format)
else:
# let's make sure we have json to deliver:
od = conformance_filter(text_out, back_end_format)
text_out = pretty_json(od)
# logger.debug('We got a different format:%s' % back_end_format)
return render(
request, 'bluebutton/default.html', {
'output': text_out,
'content': {
'parameters': query_string,
'resource_type': resource_type,
'request_method': "GET",
'interaction_type': "metadata",
'source': cx.fhir_source.name
}
})
def fhir_conformance(request, *args, **kwargs):
""" Pull and filter fhir Conformance statement
metadata call
"""
if not request.user.is_authenticated():
return authenticated_home(request)
resource_type = "Conformance"
call_to = FhirServerUrl()
if call_to.endswith("/"):
call_to += "metadata"
else:
call_to += "/metadata"
pass_params = urlencode(strip_oauth(request.GET))
# Add ? to front of parameters if needed
pass_params = prepend_q(pass_params)
logger.debug("Calling:%s" % call_to + pass_params)
r = request_call(request, call_to + pass_params, reverse_lazy("authenticated_home"))
text_out = ""
host_path = get_host_url(request, "?")
# get 'xml' 'json' or ''
fmt = get_search_param_format(request.META["QUERY_STRING"])
rewrite_url_list = settings.FHIR_SERVER_CONF["REWRITE_FROM"]
# print("Starting Rewrite_list:%s" % rewrite_url_list)
text_out = post_process_request(request, fmt, host_path, r.text, rewrite_url_list)
od = conformance_filter(text_out, fmt)
if fmt == "xml":
# logger.debug('We got xml back in od')
return HttpResponse(text_out, content_type="application/%s" % fmt)
# return HttpResponse( tostring(dict_to_xml('content', od)),
# content_type='application/%s' % fmt)
elif fmt == "json":
# logger.debug('We got json back in od')
return HttpResponse(pretty_json(od), content_type="application/%s" % fmt)
# logger.debug('We got a different format:%s' % fmt)
return render(
request,
"bluebutton/default.html",
{
"output": pretty_json(od),
"content": {
"parameters": request.GET.urlencode(),
"resource_type": resource_type,
"request_method": "GET",
"interaction_type": "metadata",
},
},
)
def metadata(request, via_oauth=False, *args, **kwargs):
"""
Arrive here to do capabilityStatement or Conformance
aka metadata
oauth_fhir_conformance sets via_oauth=True
fhir_conformance sets via_oauth=False
:param request:
:param via_oauth:
:param args:
:param kwargs:
:return:
"""
cx = None
rr = get_resourcerouter()
call_to = FhirServerUrl()
resource_type = conformance_or_capability(call_to)
if call_to.endswith('/'):
call_to += 'metadata'
else:
call_to += '/metadata'
pass_params = request.GET
# pass_params should be an OrderedDict after strip_auth
# logger.debug("result from strip_oauth:%s" % pass_params)
# Let's store the inbound requested format
# We need to simplify the format call to the backend
# so that we get data we can manipulate
requested_format = request_format(pass_params)
# now we simplify the format/_format request for the back-end
pass_params = strip_format_for_back_end(pass_params)
back_end_format = pass_params['_format']
encoded_params = urlencode(pass_params)
#
# Add ? to front of parameters if needed
pass_params = prepend_q(encoded_params)
# logger.debug("Calling:%s" % call_to + pass_params)
query_string = build_querystring(request.GET.copy())
####################################################
####################################################
r = request_call(request,
call_to + pass_params,
cx,
reverse_lazy('authenticated_home'))
####################################################
####################################################
text_out = ''
host_path = get_host_url(request, '?')
if r.status_code in ERROR_CODE_LIST:
logger.debug("We have an error code to deal with: %s" % r.status_code)
if 'html' in requested_format.lower():
return render(
request,
'bluebutton/default.html',
{'output': pretty_json(r._content, indent=4),
'fhir_id': get_fhir_id(cx),
'content': {'parameters': query_string,
'resource_type': resource_type,
'id': id,
'request_method': "GET",
'interaction_type': "search",
'div_texts': "",
'source': get_fhir_source_name(cx)}})
else:
return HttpResponse(json.dumps(r._content, indent=4),
status=r.status_code,
content_type='application/json')
# get 'xml' 'json' or ''
# fmt = get_search_param_format(request.META['QUERY_STRING'])
# force to json
# logger.debug("Format:%s" % back_end_format)
rewrite_url_list = build_rewrite_list(cx)
# print("Starting Rewrite_list:%s" % rewrite_url_list)
text_in = get_response_text(fhir_response=r)
# print("Capability text: %s\n" % r.text)
# print("Capability _text: %s\n" % r._text)
# text_in = r.text
# if text_in == "":
# print("Capability assigning _text: %s\n" % r._text[:100])
#
# text_in = r._text
text_out = post_process_request(request,
back_end_format,
host_path,
text_in,
rewrite_url_list)
# define query string further up before request_call
# query_string = build_querystring(request.GET.copy())
# logger.debug("Query:%s" % query_string)
if 'xml' in requested_format:
# logger.debug('We got xml back in od')
# logger.debug("is xml filtered?%s" % requested_format)
xml_dom = xml_to_dom(text_out)
text_out = dom_conformance_filter(xml_dom, rr)
# Append Security to ConformanceStatement
security_endpoint = build_oauth_resource(request,
format_type="xml")
text_out = append_security(text_out,
security_endpoint)
# logger.debug("Text from XML function:\n%s\n=========" % text_out)
if 'html' not in requested_format:
return HttpResponse(text_out,
content_type='application'
'/%s' % requested_format)
else:
# logger.debug("Sending text_out for display: %s" % text_out[0:100])
return render(
request,
'bluebutton/default_xml.html',
{'output': text_out,
'content': {'parameters': query_string,
'resource_type': resource_type,
'request_method': "GET",
'interaction_type': "metadata",
'source': get_fhir_source_name(cx)}})
# return HttpResponse( tostring(dict_to_xml('content', od)),
# content_type='application/%s' % fmt)
else:
# back_end_format == 'json'
# logger.debug('We got json back in od')
od = conformance_filter(text_out, back_end_format, rr)
# Append Security to ConformanceStatement
security_endpoint = build_oauth_resource(request,
format_type="json")
print("OD:\n%s" % od['rest'])
od['rest'][0]['security'] = security_endpoint
print("OD+Security:\n%s" % od)
text_out = pretty_json(od)
if 'html' not in requested_format:
return HttpResponse(text_out,
content_type='application/'
'%s' % requested_format)
if 'security' in od:
print("%s" % pretty_json(od['security'], indent=4))
else:
print("No security content in Conformance")
print("od: %s" % pretty_json(od, indent=4))
# logger.debug('We got a different format:%s' % back_end_format)
return render(
request,
'bluebutton/default.html',
{'output': text_out,
'content': {'parameters': query_string,
'resource_type': resource_type,
'request_method': "GET",
'interaction_type': "metadata"}})
def generic_read(request,
interaction_type,
resource_type,
r_id=None,
vid=None,
*args,
**kwargs):
"""
Read from remote FHIR Server
:param request:
:param interaction_type:
:param resource_type:
:param id:
:param vid:
:param args:
:param kwargs:
:return:
# Example client use in curl:
# curl -X GET http://127.0.0.1:8000/fhir/Practitioner/1234
"""
# interaction_type = 'read' or '_history' or 'vread' or 'search'
logger.debug('interaction_type: %s' % interaction_type)
# 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
srtc = check_rt_controls(resource_type)
# We get back a Supported ResourceType Control record or None
# with earlier if deny step we should have a valid srtc.
default_path = get_default_path(srtc.resource_name)
# get the default path for resource with ending "/"
# You need to add resource_type + "/" for full url
logger.debug('srtc: %s' % srtc)
try:
cx = Crosswalk.objects.get(user=request.user)
except Crosswalk.DoesNotExist:
cx = None
# logger.debug('Crosswalk for %s does not exist' % request.user)
if (cx is None and srtc is not None):
# There is a srtc record so we need to check override_search
if srtc.override_search:
# If user is not in Crosswalk and srtc has search_override = True
# We need to prevent search to avoid data leakage.
return kickout_403('Error 403: %s Resource is access controlled.'
' No records are linked to user:'******'%s' % (resource_type, request.user))
# Request.user = user
# interaction_type = read | _history | vread
# resource_type = 'Patient | Practitioner | ExplanationOfBenefit ...'
# id = fhir_id (potentially masked)
# vid = Version Id
# Check the resource_type to see if it has a url
# Check the resource_type to see if masking is required
# Get the FHIR_Server (from crosswalk via request.user)
# if masked get the fhir_id from crosswalk
# if search_override strip search items (search_block)
# if search_override add search keys
fhir_url = ''
# change source of default_url to ResourceRouter
# Add default FHIR Server URL to re-write
rewrite_url_list = settings.FHIR_SERVER_CONF['REWRITE_FROM']
# print("Starting Rewrite_list:%s" % rewrite_url_list)
if srtc:
logger.debug('SRTC:%s' % srtc)
fhir_url = default_path + resource_type + '/'
# Add to the rewrite_url list
rewrite_url_list.append(default_path)
else:
logger.debug('CX:%s' % cx)
if cx:
fhir_url = cx.get_fhir_resource_url(resource_type)
rewrite_url_list.append(fhir_url.replace(resource_type + '/', ''))
else:
# logger.debug('FHIRServer:%s' % FhirServerUrl())
fhir_url = FhirServerUrl() + resource_type + '/'
if FhirServerUrl()[:-1] not in rewrite_url_list:
rewrite_url_list.append(FhirServerUrl()[:-1])
logger.debug('FHIR URL:%s' % fhir_url)
logger.debug('Rewrite List:%s' % rewrite_url_list)
if interaction_type == 'search':
key = None
else:
key = masked_id(resource_type, cx, srtc, r_id, slash=False)
if fhir_url.endswith(resource_type + '/'):
# we need to make sure we don't specify resource_type twice in URL
if key.startswith(resource_type + '/'):
key = key.replace(resource_type + '/', '')
fhir_url += key + '/'
logger.debug('FHIR URL with key:%s' % fhir_url)
###########################
# Now we get to process the API Call.
# Internal handling format is json
# Remove the oauth elements from the GET
pass_params = strip_oauth(request.GET)
if interaction_type == 'search':
if cx is not None:
logger.debug("cx.fhir_id=%s" % cx.fhir_id)
r_id = cx.fhir_id.split('/')[1]
logger.debug("Patient Id:%s" % r_id)
if resource_type == "Patient":
key = r_id
pass_params = build_params(pass_params,
srtc,
# key,
r_id,
)
if interaction_type == 'vread':
pass_to = fhir_url + '_history' + '/' + vid
elif interaction_type == '_history':
pass_to = fhir_url + '_history'
else: # interaction_type == 'read':
pass_to = fhir_url
logger.debug('Here is the URL to send, %s now add '
'GET parameters %s' % (pass_to, pass_params))
if pass_params is not '':
pass_to += pass_params
logger.debug("Making request:%s" % pass_to)
# Now make the call to the backend API
r = request_call(request, pass_to, reverse_lazy('api:v1:home'))
text_out = ''
if 'text' in r:
logger.debug('r:%s' % r.text)
else:
logger.debug("r not returning text:%s" % r)
# logger.debug('Rewrite List:%s' % rewrite_url_list)
host_path = get_host_url(request, resource_type)[:-1]
logger.debug('host path:%s' % host_path)
# get 'xml' 'json' or ''
fmt = get_search_param_format(pass_params)
text_out = post_process_request(request,
fmt,
host_path,
r.text,
rewrite_url_list)
od = build_output_dict(request,
OrderedDict(),
resource_type,
key,
vid,
interaction_type,
fmt,
text_out)
# write session variables if _getpages was found
ikey = find_ikey(r.text)
if ikey is not '':
save_url = get_target_url(fhir_url, resource_type)
# print("Store fhir_url:%s but only: %s" % (fhir_url,save_url))
content = {
'fhir_to': save_url,
'rwrt_list': rewrite_url_list,
'res_type': resource_type,
'intn_type': interaction_type,
'key': key,
'vid': vid
}
sesn_var = write_session(request, ikey, content, skey=SESSION_KEY)
if sesn_var:
logger.debug("Problem writing session variables."
" Returned %s" % sesn_var)
if fmt == 'xml':
# logger.debug('We got xml back in od')
return HttpResponse(r.text, content_type='application/%s' % fmt)
# return HttpResponse( tostring(dict_to_xml('content', od)),
# content_type='application/%s' % fmt)
elif fmt == 'json':
# logger.debug('We got json back in od')
return HttpResponse(pretty_json(od),
content_type='application/%s' % fmt)
# logger.debug('We got a different format:%s' % fmt)
return render(
request,
'bluebutton/default.html',
{'content': pretty_json(od), 'output': od},
)
