Add suport for query api on root level

Add suport for query api on root level. Instance
query handler and root query handler merged.

Issue-ID: MULTICLOUD-1379
Signed-off-by: Lukasz Rajewski <lukasz.rajewski@orange.com>
Change-Id: I1dc95c7aca0e734edf5794e7c36143dc12070f2b

1 files changed, 79 insertions, 0 deletions

diff --git a/src/k8splugin/api/queryhandler.go b/src/k8splugin/api/queryhandler.go
new file mode 100644
index 00000000..9c11954c
--- /dev/null
+++ b/src/k8splugin/api/queryhandler.go
@@ -0,0 +1,79 @@
+/*
+Copyright 2018 Intel Corporation.
+Copyright © 2021 Samsung Electronics
+Copyright © 2021 Orange
+
+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.
+*/
+
+package api
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"github.com/onap/multicloud-k8s/src/k8splugin/internal/app"
+	log "github.com/onap/multicloud-k8s/src/k8splugin/internal/logutils"
+)
+
+// Used to store the backend implementation objects
+// Also simplifies the mocking needed for unit testing
+type queryHandler struct {
+	// Interface that implements the Instance operations
+	client app.QueryManager
+}
+
+// queryHandler retrieves information about specified resources for instance
+func (i queryHandler) queryHandler(w http.ResponseWriter, r *http.Request) {
+	namespace := r.FormValue("Namespace")
+	cloudRegion := r.FormValue("CloudRegion")
+	apiVersion := r.FormValue("ApiVersion")
+	kind := r.FormValue("Kind")
+	name := r.FormValue("Name")
+	labels := r.FormValue("Labels")
+	if cloudRegion == "" {
+		http.Error(w, "Missing CloudRegion mandatory parameter", http.StatusBadRequest)
+		return
+	}
+	if apiVersion == "" {
+		http.Error(w, "Missing ApiVersion mandatory parameter", http.StatusBadRequest)
+		return
+	}
+	if kind == "" {
+		http.Error(w, "Missing Kind mandatory parameter", http.StatusBadRequest)
+		return
+	}
+	// instance id is irrelevant here
+	resp, err := i.client.Query(namespace, cloudRegion, apiVersion, kind, name, labels, "query")
+	if err != nil {
+		log.Error("Error getting Query results", log.Fields{
+			"error":       err,
+			"cloudRegion": cloudRegion,
+			"namespace":   namespace,
+			"apiVersion":  apiVersion,
+			"kind":        kind,
+			"name":        name,
+			"labels":      labels,
+		})
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+	}
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusOK)
+	err = json.NewEncoder(w).Encode(resp)
+	if err != nil {
+		log.Error("Error Marshaling Response", log.Fields{
+			"error":    err,
+			"response": resp,
+		})
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+}