forked from arangodb/kube-arangodb
/
clients.go
77 lines (71 loc) · 2.28 KB
/
clients.go
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//
// DISCLAIMER
//
// Copyright 2018 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
//
// Author Ewout Prangsma
//
package storage
import (
"context"
"fmt"
"github.com/arangodb/kube-arangodb/pkg/storage/provisioner"
"github.com/arangodb/kube-arangodb/pkg/storage/provisioner/client"
"github.com/arangodb/kube-arangodb/pkg/util/k8sutil"
)
// createProvisionerClients creates a list of clients for all known
// provisioners.
func (ls *LocalStorage) createProvisionerClients() ([]provisioner.API, error) {
// Find provisioner endpoints
ns := ls.apiObject.GetNamespace()
listOptions := k8sutil.LocalStorageListOpt(ls.apiObject.GetName(), roleProvisioner)
items, err := ls.deps.KubeCli.CoreV1().Endpoints(ns).List(listOptions)
if err != nil {
return nil, maskAny(err)
}
addrs := createValidEndpointList(items)
if len(addrs) == 0 {
// No provisioners available
return nil, nil
}
// Create clients for endpoints
clients := make([]provisioner.API, len(addrs))
for i, addr := range addrs {
var err error
clients[i], err = client.New(fmt.Sprintf("http://%s", addr))
if err != nil {
return nil, maskAny(err)
}
}
return clients, nil
}
// GetClientByNodeName looks for a client that serves the given node name.
// Returns an error if no such client is found.
func (ls *LocalStorage) GetClientByNodeName(nodeName string) (provisioner.API, error) {
clients, err := ls.createProvisionerClients()
if err != nil {
return nil, maskAny(err)
}
// Find matching client
for _, c := range clients {
ctx := context.Background()
if info, err := c.GetNodeInfo(ctx); err == nil && info.NodeName == nodeName {
return c, nil
}
}
return nil, maskAny(fmt.Errorf("No client found for node name '%s'", nodeName))
}