Files
fn-serverless/api/server/extensions.go
Travis Reeder 6b8627d1c5 Fixes to recent extension changes. (#568)
* Fixes to recent extension changes.

* Fixes issue where gin will continue calling the handler even if next() isn't called.

* Updated docs.
2017-12-06 10:12:55 -08:00

37 lines
1.2 KiB
Go

package server
import (
"log"
"github.com/fnproject/fn/fnext"
)
// TODO: Move this into `github.com/fnproject/fn` package after main is moved out of root dir.
var extensions = map[string]fnext.Extension{}
// RegisterExtension registers the extension so it's available, but does not initialize it.
// This is generally what third party extensions will use in their init() method.
func RegisterExtension(ext fnext.Extension) {
extensions[ext.Name()] = ext
}
// AddExtensionByName This essentially just makes sure the extensions are ordered properly and is
// what the CLI uses for the `fn build-server` command. Probably not used by much else.
func (s *Server) AddExtensionByName(name string) {
e, ok := extensions[name]
if !ok {
log.Fatalf("Extension %v not registered.\n", name)
}
err := e.Setup(s)
if err != nil {
log.Fatalf("Failed to add extension %v: %v\n", name, err)
}
}
// AddExtension both registers an extension and adds it. This is useful during extension development
// or if you want to build a custom server without using `fn build-server`.
func (s *Server) AddExtension(ext fnext.Extension) {
RegisterExtension(ext)
s.AddExtensionByName(ext.Name())
}