Sudo-JHare/FHIRFLARE-IG-Toolkit
Sudo-JHare/FHIRFLARE-IG-Toolkit
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Hotfix - proxy pathing

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This commit is contained in:
Joshua Hare 2025-08-12 20:48:52 +10:00
parent 5a6f2072d7
commit 9729004982
2 changed files with 31 additions and 14 deletions
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19
app.py
View File

@ -1791,11 +1791,25 @@ def proxy_hapi(subpath):
logger.debug(f"Proxy received request for path: '/fhir/{subpath}', cleaned subpath: '{clean_subpath}'")
# Determine the target FHIR server base URL
# NEW: Check for proxy-target query parameter first
target_server_query = request.args.get('proxy-target')
target_server_header = request.headers.get('X-Target-FHIR-Server')
final_base_url = None
is_custom_target = False
if target_server_header:
if target_server_query:
try:
parsed_url = urlparse(target_server_query)
if not parsed_url.scheme or not parsed_url.netloc:
raise ValueError("Invalid URL format in proxy-target query parameter")
final_base_url = target_server_query.rstrip('/')
is_custom_target = True
logger.info(f"Proxy target identified from query parameter: {final_base_url}")
except ValueError as e:
logger.warning(f"Invalid URL in proxy-target query parameter: '{target_server_query}'. Falling back. Error: {e}")
final_base_url = current_app.config['HAPI_FHIR_URL'].rstrip('/')
logger.debug(f"Falling back to default local HAPI due to invalid query: {final_base_url}")
elif target_server_header:
try:
parsed_url = urlparse(target_server_header)
if not parsed_url.scheme or not parsed_url.netloc:
@ -1809,7 +1823,7 @@ def proxy_hapi(subpath):
logger.debug(f"Falling back to default local HAPI due to invalid header: {final_base_url}")
else:
final_base_url = current_app.config['HAPI_FHIR_URL'].rstrip('/')
logger.debug(f"No target header found, proxying to default local HAPI: {final_base_url}")
logger.debug(f"No target info found, proxying to default local HAPI: {final_base_url}")
# Construct the final URL for the target server request
# Append the cleaned subpath only if it's not empty
@ -1891,7 +1905,6 @@ def proxy_hapi(subpath):
except Exception as e:
logger.error(f"Unexpected proxy error for {final_url}: {str(e)}", exc_info=True)
return jsonify({'resourceType': 'OperationOutcome', 'issue': [{'severity': 'error', 'code': 'exception', 'diagnostics': 'An unexpected error occurred within the FHIR proxy.', 'details': {'text': str(e)}}]}), 500
# --- End of corrected proxy_hapi function ---

8
services.py
View File

@ -4586,16 +4586,20 @@ def retrieve_bundles(fhir_server_url, resources, output_zip, validate_references
# Determine Base URL and Headers for Proxy
base_proxy_url = f"{current_app.config['APP_BASE_URL'].rstrip('/')}/fhir"
headers = {'Accept': 'application/fhir+json, application/fhir+xml;q=0.9, */*;q=0.8'}
is_custom_url = fhir_server_url != '/fhir' and fhir_server_url is not None and fhir_server_url.startswith('http')
if is_custom_url:
headers['X-Target-FHIR-Server'] = fhir_server_url.rstrip('/')
# NEW: Add the custom URL as a query parameter for the proxy to use.
# This bypasses issues where reverse proxies might strip custom headers.
base_proxy_url = f"{base_proxy_url}?proxy-target={fhir_server_url.rstrip('/')}"
if auth_type in ['bearer', 'basic'] and auth_token:
auth_display = 'Basic <redacted>' if auth_type == 'basic' else (auth_token[:10] + '...' if len(auth_token) > 10 else auth_token)
yield json.dumps({"type": "info", "message": f"Using {auth_type} auth with header: Authorization: {auth_display}"}) + "\n"
headers['Authorization'] = auth_token
else:
yield json.dumps({"type": "info", "message": "Using no authentication for custom URL"}) + "\n"
logger.debug(f"Will use proxy with X-Target-FHIR-Server: {headers['X-Target-FHIR-Server']}")
logger.debug(f"Will use proxy with proxy-target: {fhir_server_url}")
else:
yield json.dumps({"type": "info", "message": "Using no authentication for local HAPI server"}) + "\n"
logger.debug("Will use proxy targeting local HAPI server")