Module layer

Http Layers provided by Rama.

A Layer, as defined in rama_core::Service, is a middleware that can modify the request and/or response of a Services. It is also capable of branching between two or more Services.

Examples:

• auth: A layer that can be used to authenticate requests, branching in case the request is not authenticated (read: rejected).
• cors: A layer that can be used to add CORS headers to the response.

Most layers are implemented as a Service, and then wrapped in a Layer. This is done to allow the layer to be used as a service, and to allow it to be composed with other layers.

Modules

• auth
  Authorization related middleware.
• body_limit
  Apply a limit to the request body.
• catch_panic
  Convert panics into responses.
• classify
  Tools for classifying responses as either success or failure.
• collect_body
  Collect the http Body
• compressioncompression
  Middleware that compresses response bodies.
• cors
  Middleware which adds headers for CORS.
• decompressioncompression
  Middleware that decompresses request and response bodies.
• dns
  Layers in function of DNS.
• error_handling
  Middleware to turn Service errors into Responses.
• follow_redirect
  Middleware for following redirections.
• forwarded
  Middleware to support the reading and writing of Forwarded headers.
• header_config
  Extract a header config from a request or response and insert it into the Extensions of its Context.
• header_option_value
  Similar to super::header_config::HeaderConfigLayer, but storing the Default value of type T in case the header with the given HeaderName is present and has a bool-like value.
• map_request_body
  Apply a transformation to the request body.
• map_response_body
  Apply a transformation to the response body.
• normalize_path
  Middleware that normalizes paths.
• opentelemetrytelemetry
  Http OpenTelemetry Layer Support for Rama.
• propagate_headers
  Propagate a header from the request to the response.
• proxy_auth
  Middleware that validates if a request has the appropriate Proxy Authorisation.
• remove_header
  Middleware for removing headers from requests and responses.
• request_id
  Set and propagate request ids.
• required_header
  Middleware for setting required headers on requests and responses, if they are missing.
• retry
  Middleware for retrying “failed” requests.
• sensitive_headers
  Middlewares that mark headers as sensitive.
• set_header
  Middleware for setting headers on requests and responses.
• set_status
  Middleware to override status codes.
• timeout
  Middleware that applies a timeout to requests.
• trace
  Middleware that adds high level tracing to a Service.
• traffic_writer
  Middleware to write Http traffic in std format.
• ua
  User-Agent (see also rama-ua) http layer support
• validate_request
  Middleware that validates requests.