/
extension_points.go
81 lines (66 loc) · 2.44 KB
/
extension_points.go
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// TODO: it would be nice to move these into the top level folder so people can use these with the "functions" package, eg: functions.ApiHandler
package server
import (
"net/http"
"github.com/gin-gonic/gin"
"github.com/iron-io/functions/api"
"github.com/iron-io/functions/api/models"
)
type ApiHandlerFunc func(w http.ResponseWriter, r *http.Request)
// ServeHTTP calls f(w, r).
func (f ApiHandlerFunc) ServeHTTP(w http.ResponseWriter, r *http.Request) {
f(w, r)
}
type ApiHandler interface {
// Handle(ctx context.Context)
ServeHTTP(w http.ResponseWriter, r *http.Request)
}
type ApiAppHandler interface {
// Handle(ctx context.Context)
ServeHTTP(w http.ResponseWriter, r *http.Request, app *models.App)
}
type ApiAppHandlerFunc func(w http.ResponseWriter, r *http.Request, app *models.App)
// ServeHTTP calls f(w, r).
func (f ApiAppHandlerFunc) ServeHTTP(w http.ResponseWriter, r *http.Request, app *models.App) {
f(w, r, app)
}
func (s *Server) apiHandlerWrapperFunc(apiHandler ApiHandler) gin.HandlerFunc {
return func(c *gin.Context) {
apiHandler.ServeHTTP(c.Writer, c.Request)
}
}
func (s *Server) apiAppHandlerWrapperFunc(apiHandler ApiAppHandler) gin.HandlerFunc {
return func(c *gin.Context) {
// get the app
appName := c.Param(api.CApp)
app, err := s.Datastore.GetApp(c.Request.Context(), appName)
if err != nil {
c.AbortWithError(http.StatusInternalServerError, err)
return
}
if app == nil {
c.AbortWithStatus(http.StatusNotFound)
return
}
apiHandler.ServeHTTP(c.Writer, c.Request, app)
}
}
// AddEndpoint adds an endpoint to /v1/x
func (s *Server) AddEndpoint(method, path string, handler ApiHandler) {
v1 := s.Router.Group("/v1")
// v1.GET("/apps/:app/log", logHandler(cfg))
v1.Handle(method, path, s.apiHandlerWrapperFunc(handler))
}
// AddEndpoint adds an endpoint to /v1/x
func (s *Server) AddEndpointFunc(method, path string, handler func(w http.ResponseWriter, r *http.Request)) {
s.AddEndpoint(method, path, ApiHandlerFunc(handler))
}
// AddAppEndpoint adds an endpoints to /v1/apps/:app/x
func (s *Server) AddAppEndpoint(method, path string, handler ApiAppHandler) {
v1 := s.Router.Group("/v1")
v1.Handle(method, "/apps/:app"+path, s.apiAppHandlerWrapperFunc(handler))
}
// AddAppEndpoint adds an endpoints to /v1/apps/:app/x
func (s *Server) AddAppEndpointFunc(method, path string, handler func(w http.ResponseWriter, r *http.Request, app *models.App)) {
s.AddAppEndpoint(method, path, ApiAppHandlerFunc(handler))
}