X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?a=blobdiff_plain;f=invoker%2Fhandler%2Fdiscovery_handler.go;fp=invoker%2Fhandler%2Fdiscovery_handler.go;h=f15ddc5a65a6ba3ba6f1e482c3e1d0d2c38d996b;hb=7178971a7f69da513f153f433b020dd986a393a6;hp=0000000000000000000000000000000000000000;hpb=6f91b6ac28e733561200c5faf12029cafed39d3f;p=nonrtric%2Fplt%2Fsme.git

diff --git a/invoker/handler/discovery_handler.go b/invoker/handler/discovery_handler.go
new file mode 100644
index 0000000..f15ddc5
--- /dev/null
+++ b/invoker/handler/discovery_handler.go
@@ -0,0 +1,99 @@
+// -
+//
+//	========================LICENSE_START=================================
+//	O-RAN-SC
+//	%%
+//	Copyright (C) 2023: Nordix Foundation
+//	%%
+//	Licensed under the Apache License, Version 2.0 (the "License");
+//	you may not use this file except in compliance with the License.
+//	You may obtain a copy of the License at
+//
+//	     http://www.apache.org/licenses/LICENSE-2.0
+//
+//	Unless required by applicable law or agreed to in writing, software
+//	distributed under the License is distributed on an "AS IS" BASIS,
+//	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//	See the License for the specific language governing permissions and
+//	limitations under the License.
+//	========================LICENSE_END===================================
+package handler
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"net/url"
+
+	"github.com/labstack/echo/v4"
+	log "github.com/sirupsen/logrus"
+	"oransc.org/nonrtric/capifinvoker/internal/discoverserviceapi"
+)
+
+func DiscoverAPIs(server string) echo.HandlerFunc {
+	return func(c echo.Context) error {
+
+		invokerId := c.FormValue("api-invoker-id")
+		if invokerId == "" {
+			return c.Render(http.StatusOK, "discovery.html", map[string]interface{}{
+				"isResponse": false,
+				"isError":    false,
+			})
+		}
+
+		//server format: http://localhost:8090
+		urlStr, _ := url.Parse(server + "/service-apis/v1/allServiceAPIs")
+		log.Infof("[Discovery API] apis to %v for invokerId: %v", urlStr, invokerId)
+
+		//TODO check how to remove empty parameters
+		c.Request().ParseForm()
+		params := c.Request().Form
+		for key, val := range params {
+			if len(val) == 0 || val[0] == "" {
+				params.Del(key)
+			}
+		}
+		urlStr.RawQuery = params.Encode()
+
+		headers := map[string]string{
+			"Content-Type": "text/plain",
+		}
+		resp, err := makeRequest("GET", urlStr.String(), headers, nil)
+		if err != nil {
+			log.Errorf("[Discovery API] %v", fmt.Sprintf("error: %v", err))
+			return c.Render(http.StatusBadRequest, "discovery.html", map[string]interface{}{
+				"response":   fmt.Sprintf("error: %v", err),
+				"isError":    true,
+				"isResponse": false,
+			})
+		}
+		log.Infof("[Discovery API] Response from service: %+v error: %v\n", string(resp), err)
+
+		var resAPIs discoverserviceapi.DiscoveredAPIs
+		err = json.Unmarshal(resp, &resAPIs)
+		if err != nil {
+			log.Error("[Discovery API] error unmarshaling parameter DiscoveredAPIs as JSON")
+			return c.Render(http.StatusBadRequest, "discovery.html", map[string]interface{}{
+				"isResponse": false,
+				"isError":    true,
+				"response":   "error unmarshaling parameter []DiscoveredAPIs as JSON",
+			})
+		}
+
+		if len(*resAPIs.ServiceAPIDescriptions) == 0 {
+			log.Info("[Discovery API] There are no APIs availables for the specified parameters.")
+			return c.Render(http.StatusOK, "discovery.html", map[string]interface{}{
+				"isResponse": false,
+				"isError":    false,
+				"isEmpty":    true,
+				"response":   "There are no APIs availables for the specified parameters.",
+			})
+		}
+
+		bytes, _ := json.Marshal(resAPIs)
+		return c.Render(http.StatusOK, "discovery.html", map[string]interface{}{
+			"isResponse": true,
+			"response":   string(bytes),
+		})
+	}
+}