Package filters contains all the http handler chain filters which _are_ api related, i.e. which are prerequisite for the API services to work (in contrast to the filters in the server package which are not part of the API contract).
WithAudit decorates a http.Handler with audit logging information for all the requests coming to the server. Audit level is decided according to requests' attributes and audit policy. Logs are emitted to the audit sink to process events. If sink or audit policy is nil, no decoration takes place.
func WithAuthentication(handler http.Handler, auth authenticator.Request, failed http.Handler, apiAuds authenticator.Audiences) http.Handler
WithAuthentication creates an http handler that tries to authenticate the given request as a user, and then stores any such user found onto the provided context for the request. If authentication fails or returns an error the failed handler is used. On success, "Authorization" header is removed from the request and handler is invoked to serve the request.
func WithAuthorization(handler http.Handler, a authorizer.Authorizer, s runtime.NegotiatedSerializer) http.Handler
WithAuthorizationCheck passes all authorized requests on to handler, and returns a forbidden error otherwise.
WithCacheControl sets the Cache-Control header to "no-cache, private" because all servers are protected by authn/authz. see https://developers.google.com/web/fundamentals/performance/optimizing-content-efficiency/http-caching#defining_optimal_cache-control_policy
WithFailedAuthenticationAudit decorates a failed http.Handler used in WithAuthentication handler. It is meant to log only failed authentication requests.
func WithImpersonation(handler http.Handler, a authorizer.Authorizer, s runtime.NegotiatedSerializer) http.Handler
WithImpersonation is a filter that will inspect and check requests that attempt to change the user.Info for their requests
WithRequestInfo attaches a RequestInfo to the context.