mirror of
https://github.com/arangodb/kube-arangodb.git
synced 2024-12-14 11:57:37 +00:00
118 lines
3.1 KiB
Go
118 lines
3.1 KiB
Go
//
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// DISCLAIMER
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//
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// Copyright 2016-2024 ArangoDB GmbH, Cologne, Germany
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// Copyright holder is ArangoDB GmbH, Cologne, Germany
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//
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package storage
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import (
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"context"
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"fmt"
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"time"
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"github.com/arangodb/kube-arangodb/pkg/storage/provisioner"
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"github.com/arangodb/kube-arangodb/pkg/storage/provisioner/client"
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"github.com/arangodb/kube-arangodb/pkg/util/errors"
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"github.com/arangodb/kube-arangodb/pkg/util/k8sutil"
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)
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type Clients map[string]provisioner.API
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func (c Clients) Copy() Clients {
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r := make(Clients, len(c))
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for k, v := range c {
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r[k] = v
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}
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return r
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}
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func (c Clients) Filter(f func(node string, client provisioner.API) bool) Clients {
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r := make(Clients, len(c))
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for k, v := range c {
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if f(k, v) {
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r[k] = v
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}
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}
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return r
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}
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func (c Clients) Keys() []string {
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r := make([]string, 0, len(c))
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for k := range c {
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r = append(r, k)
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}
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return r
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}
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// createProvisionerClients creates a list of clients for all known
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// provisioners.
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func (ls *LocalStorage) createProvisionerClients(ctx context.Context) (Clients, error) {
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// Find provisioner endpoints
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ns := ls.apiObject.GetNamespace()
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listOptions := k8sutil.LocalStorageListOpt(ls.apiObject.GetName(), roleProvisioner)
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items, err := ls.deps.Client.Kubernetes().CoreV1().Endpoints(ns).List(context.Background(), listOptions)
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if err != nil {
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return nil, errors.WithStack(err)
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}
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addrs := createValidEndpointList(items)
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if len(addrs) == 0 {
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// No provisioners available
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return nil, nil
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}
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// Create clients for endpoints
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clients := make(map[string]provisioner.API, len(addrs))
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for _, addr := range addrs {
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c, err := client.New(fmt.Sprintf("http://%s", addr))
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if err != nil {
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return nil, errors.WithStack(err)
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}
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if info, err := ls.fetchClientNodeInfo(ctx, c); err == nil {
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clients[info.NodeName] = c
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}
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}
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return clients, nil
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}
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func (ls *LocalStorage) fetchClientNodeInfo(ctx context.Context, c provisioner.API) (provisioner.NodeInfo, error) {
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nctx, cancel := context.WithTimeout(ctx, 3*time.Second)
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defer cancel()
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return c.GetNodeInfo(nctx)
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}
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// GetClientByNodeName looks for a client that serves the given node name.
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// Returns an error if no such client is found.
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func (ls *LocalStorage) GetClientByNodeName(ctx context.Context, nodeName string) (provisioner.API, error) {
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clients, err := ls.createProvisionerClients(ctx)
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if err != nil {
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return nil, errors.WithStack(err)
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}
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// Find matching client
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if c, ok := clients[nodeName]; ok {
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return c, nil
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}
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return nil, errors.WithStack(errors.Errorf("No client found for node name '%s'", nodeName))
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}
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