• ngx_goku_mitigations_module
• ngx_goku_mitigations_module_ctx
• ngx_goku_mitigations_postconfiguration
• ngx_goku_mitigations_register_handler
• ngx_goku_enhanced_request_body_handler
• deserialize_and_populate_ctx
• deserialize_client_config_and_populate_ctx
• validate_and_populate_client_original_body_size
• validate_and_populate_client_request_body
• gokuDeserializeGetClientHttpRequestBody

It is difficult to say exactly what these variables are without more context. However, based on their names, it is likely that they are related to a module for implementing security mitigations in the NGINX web server. Here are the variables again, with some potential descriptions based on their names:

• ngx_goku_mitigations_module: this could be the main module for implementing security mitigations in NGINX.
• ngx_goku_mitigations_module_ctx: this could be a context variable for storing information about the state of the mitigation module.
• ngx_goku_mitigations_postconfiguration: this could be a function that is called after the NGINX configuration has been loaded, to allow the mitigation module to perform any necessary setup.
• ngx_goku_mitigations_register_handler: this could be a function for registering a request handler with the mitigation module, allowing it to intercept and process incoming requests.
• ngx_goku_enhanced_request_body_handler: this could be a request handler that is enhanced to provide additional functionality, such as parsing the request body or validating its size.
• deserialize_and_populate_ctx: this could be a function for deserializing data and populating the context variable with the resulting information.
• deserialize_client_config_and_populate_ctx: this could be a function for deserializing configuration data from the client and populating the context variable with the resulting information.
• validate_and_populate_client_original_body_size: this could be a function for validating the original size of the request body sent by the client, and populating the context variable with the result.
• validate_and_populate_client_request_body: this could be a function for validating the request body sent by the client, and populating the context variable with the result.
• gokuDeserializeGetClientHttpRequestBody: this could be a function for deserializing the request body sent by the client and returning it.

Based on the names of the variables, it is likely that you would populate the ctx data with the maximum allowed body size per source service in the validate_and_populate_client_original_body_size function. This function appears to be responsible for validating the original size of the request body sent by the client, and populating the context variable with the result. You could modify this function to include a check for the maximum allowed body size per source service, and populate the context variable with that information if the body size is within the allowed limit.