[Bugfix] Fix Rebalancer NPE in case if member is missing in Status (#1236)

Author: ajanikow

CHANGELOG.md

@@ -4,6 +4,7 @@
 - (Feature) Add Generics & Drop policy/v1beta1 support
 - (Feature) Add Kubernetes Client logger
 - (Feature) CreationFailed ArangoMember Phase
+- (Bugfix) Fix Rebalancer NPE in case if member is missing in Status
 
 ## [1.2.24](https://github.com/arangodb/kube-arangodb/tree/1.2.24) (2023-01-25)
 - (Bugfix) Fix deployment creation on ARM64

pkg/util/arangod/conn/closed.go

@@ -0,0 +1,73 @@
+//
+// DISCLAIMER
+//
+// Copyright 2023 ArangoDB GmbH, Cologne, Germany
+//
+// 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.
+//
+// Copyright holder is ArangoDB GmbH, Cologne, Germany
+//
+
+package conn
+
+import (
+	"context"
+
+	"github.com/arangodb/go-driver"
+)
+
+func NewClosedConnection() driver.Connection {
+	return closedConnection{}
+}
+
+func newClosedConnectionError() error {
+	return closedConnectionError{}
+}
+
+type closedConnectionError struct {
+}
+
+func (c closedConnectionError) Error() string {
+	return "Connection Closed"
+}
+
+type closedConnection struct {
+}
+
+func (c closedConnection) NewRequest(method, path string) (driver.Request, error) {
+	return nil, newClosedConnectionError()
+}
+
+func (c closedConnection) Do(ctx context.Context, req driver.Request) (driver.Response, error) {
+	return nil, newClosedConnectionError()
+}
+
+func (c closedConnection) Unmarshal(data driver.RawObject, result interface{}) error {
+	return newClosedConnectionError()
+}
+
+func (c closedConnection) Endpoints() []string {
+	return nil
+}
+
+func (c closedConnection) UpdateEndpoints(endpoints []string) error {
+	return newClosedConnectionError()
+}
+
+func (c closedConnection) SetAuthentication(authentication driver.Authentication) (driver.Connection, error) {
+	return c, nil
+}
+
+func (c closedConnection) Protocols() driver.ProtocolSet {
+	return nil
+}