loadservice.go

package loadservice

/*
Copyright 2017 - 2020 Crunchy Data Solutions, Inc.
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.
*/

import (
	"encoding/json"
	"github.com/crunchydata/postgres-operator/apiserver"
	msgs "github.com/crunchydata/postgres-operator/apiservermsgs"
	log "github.com/sirupsen/logrus"
	//"github.com/gorilla/mux"
	"net/http"
)

// LoadHandler ...
// pgo load --selector=name=mycluster --load-config=./sample-load-config.json
func LoadHandler(w http.ResponseWriter, r *http.Request) {
	// swagger:operation POST /load loadservice load
	/*```
	Load config for given cluster
	*/
	// ---
	//  produces:
	//  - application/json
	//  parameters:
	//  - name: "Load Request"
	//    in: "body"
	//    schema:
	//      "$ref": "#/definitions/LoadRequest"
	//  responses:
	//    '200':
	//      description: Output
	//      schema:
	//        "$ref": "#/definitions/LoadResponse"
	var ns string
	log.Debug("loadservice.LoadHandler called")

	var request msgs.LoadRequest
	_ = json.NewDecoder(r.Body).Decode(&request)

	username, err := apiserver.Authn(apiserver.LOAD_PERM, w, r)
	if err != nil {
		return
	}

	w.Header().Set("WWW-Authenticate", `Basic realm="Restricted"`)
	w.Header().Set("Content-Type", "application/json")
	w.WriteHeader(http.StatusOK)

	resp := msgs.LoadResponse{}
	resp.Status = msgs.Status{Code: msgs.Ok, Msg: ""}

	if request.ClientVersion != msgs.PGO_VERSION {
		resp.Status = msgs.Status{Code: msgs.Error, Msg: apiserver.VERSION_MISMATCH_ERROR}
		json.NewEncoder(w).Encode(resp)
		return
	}

	ns, err = apiserver.GetNamespace(apiserver.Clientset, username, request.Namespace)
	if err != nil {
		resp.Status = msgs.Status{Code: msgs.Error, Msg: err.Error()}
		json.NewEncoder(w).Encode(resp)
		return
	}

	resp = Load(&request, ns, username)
	json.NewEncoder(w).Encode(resp)
}