forked from thecodeteam/libstorage
/
server_middleware.go
94 lines (80 loc) · 2.55 KB
/
server_middleware.go
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package server
import (
"github.com/codedellemc/libstorage/api/server/handlers"
"github.com/codedellemc/libstorage/api/server/services"
"github.com/codedellemc/libstorage/api/types"
)
func (s *server) initGlobalMiddleware() {
s.addGlobalMiddleware(handlers.NewQueryParamsHandler())
if s.logHTTPEnabled {
s.addGlobalMiddleware(handlers.NewLoggingHandler(
s.stdOut,
s.logHTTPRequests,
s.logHTTPResponses))
}
s.addGlobalMiddleware(handlers.NewTransactionHandler())
s.addGlobalMiddleware(handlers.NewErrorHandler())
s.addGlobalMiddleware(handlers.NewAuthGlobalHandler(s.authConfig))
s.addGlobalMiddleware(
handlers.NewInstanceIDHandler(services.StorageServices(s.ctx)))
s.addGlobalMiddleware(handlers.NewLocalDevicesHandler())
s.addGlobalMiddleware(handlers.NewOnRequestHandler())
}
func (s *server) initRouteMiddleware() {
// add the route-specific middleware for all the existing routes. it's
// also possible to add route-specific middleware that is not defined as
// part of a route's Middlewares collection.
s.routeHandlers = map[string][]types.Middleware{}
for _, router := range s.routers {
for _, r := range router.Routes() {
s.addRouterMiddleware(r, r.GetMiddlewares()...)
}
}
}
func (s *server) addRouterMiddleware(
r types.Route, middlewares ...types.Middleware) {
middlewaresForRouteName, ok := s.routeHandlers[r.GetName()]
if !ok {
middlewaresForRouteName = []types.Middleware{}
}
middlewaresForRouteName = append(middlewaresForRouteName, middlewares...)
s.routeHandlers[r.GetName()] = middlewaresForRouteName
}
func (s *server) addGlobalMiddleware(m types.Middleware) {
s.globalHandlers = append(s.globalHandlers, m)
}
func (s *server) handleWithMiddleware(
ctx types.Context,
route types.Route) types.APIFunc {
/*if route.GetMethod() == "HEAD" {
return route.GetHandler()
}*/
handler := route.GetHandler()
middlewaresForRouteName, ok := s.routeHandlers[route.GetName()]
if !ok {
ctx.Warn("no middlewares for route")
} else {
for h := range reverse(middlewaresForRouteName) {
handler = h.Handler(handler)
ctx.WithField(
"middleware", h.Name()).Debug("added route middleware")
}
}
// add the global handlers
for h := range reverse(s.globalHandlers) {
handler = h.Handler(handler)
ctx.WithField(
"middleware", h.Name()).Debug("added global middleware")
}
return handler
}
func reverse(middlewares []types.Middleware) chan types.Middleware {
ret := make(chan types.Middleware)
go func() {
for i := range middlewares {
ret <- middlewares[len(middlewares)-1-i]
}
close(ret)
}()
return ret
}