[iam] Setup chi mux for routing

Author: easyCZ

components/iam/go.mod

@@ -4,6 +4,7 @@ go 1.19
 
 require (
 	github.com/gitpod-io/gitpod/common-go v0.0.0-00010101000000-000000000000
+	github.com/go-chi/chi/v5 v5.0.8
 	github.com/sirupsen/logrus v1.8.1
 	github.com/spf13/cobra v1.4.0
 )

components/iam/go.sum

@@ -0,0 +1,20 @@
+// Copyright (c) 2022 Gitpod GmbH. All rights reserved.
+// Licensed under the GNU Affero General Public License (AGPL).
+// See License.AGPL.txt in the project root for license information.
+
+package oidc
+
+import (
+	"github.com/go-chi/chi/v5"
+	"net/http"
+)
+
+func Router() *chi.Mux {
+	router := chi.NewMux()
+
+	router.HandleFunc("/start", func(writer http.ResponseWriter, request *http.Request) {
+		writer.Write([]byte(`hello`))
+	})
+
+	return router
+}

components/iam/pkg/oidc/router.go

@@ -6,9 +6,10 @@ package server
 
 import (
 	"fmt"
-
 	"github.com/gitpod-io/gitpod/common-go/baseserver"
 	"github.com/gitpod-io/gitpod/iam/pkg/config"
+	"github.com/gitpod-io/gitpod/iam/pkg/oidc"
+	"github.com/go-chi/chi/v5"
 	"github.com/sirupsen/logrus"
 )
 
@@ -24,9 +25,23 @@ func Start(logger *logrus.Entry, version string, cfg *config.ServiceConfig) erro
 		return fmt.Errorf("failed to initialize iam server: %w", err)
 	}
 
+	err = register(srv)
+	if err != nil {
+		return fmt.Errorf("failed to register services to iam server")
+	}
+
 	if listenErr := srv.ListenAndServe(); listenErr != nil {
 		return fmt.Errorf("failed to serve iam server: %w", err)
 	}
 
 	return nil
 }
+
+func register(srv *baseserver.Server) error {
+	router := chi.NewMux()
+	router.Mount("/oidc", oidc.Router())
+
+	// All root requests are handled by our router
+	srv.HTTPMux().Handle("/", router)
+	return nil
+}