forked from rook/rook
Travis Nielsen
c122562a7d
Remove all cgo from the code base, and start the transformation to calling external ceph tools to generate config and start daemons.
112 lines
2.9 KiB
Go
112 lines
2.9 KiB
Go
/*
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Copyright 2016 The Rook Authors. All rights reserved.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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package bootstrap
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import (
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"github.com/coreos/etcd/client"
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"github.com/coreos/etcd/pkg/types"
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ctx "golang.org/x/net/context"
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)
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type EtcdMgrContext interface {
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Client(initialNodes []string) (client.Client, error)
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MembersAPI() (client.MembersAPI, error)
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KeysAPI() (client.KeysAPI, error)
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Members() ([]string, types.URLsMap, error)
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}
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type Context struct {
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ClusterToken string
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}
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func (e *Context) Client(initialNodes []string) (client.Client, error) {
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c, err := client.New(client.Config{
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Endpoints: initialNodes,
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Transport: client.DefaultTransport,
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HeaderTimeoutPerRequest: DefaultClientTimeout,
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})
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if err != nil {
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return nil, err
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}
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return c, nil
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}
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// MembersAPI returns an instance of MembersAPI for the current etcd cluster
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func (e *Context) MembersAPI() (client.MembersAPI, error) {
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members, _, err := e.Members()
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if err != nil {
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return nil, err
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}
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c, err := e.Client(members)
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if err != nil {
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return nil, err
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}
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mAPI := client.NewMembersAPI(c)
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return mAPI, nil
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}
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func (e *Context) KeysAPI() (client.KeysAPI, error) {
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members, _, err := e.Members()
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if err != nil {
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return nil, err
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}
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c, err := e.Client(members)
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if err != nil {
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return nil, err
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}
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kAPI := client.NewKeysAPI(c)
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return kAPI, nil
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}
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func (e *Context) Members() ([]string, types.URLsMap, error) {
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urlsMap := types.URLsMap{}
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var nodes []string
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size, err := getClusterSize(e.ClusterToken)
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if err != nil {
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return nodes, urlsMap, err
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}
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initialNodes, err := GetCurrentNodesFromDiscovery(e.ClusterToken, size)
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if err != nil {
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logger.Errorf("error in GetCurrentNodesFromDiscovery: %+v", err)
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return nodes, urlsMap, err
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}
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c, err := e.Client(initialNodes)
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if err != nil {
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return nodes, urlsMap, err
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}
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mAPI := client.NewMembersAPI(c)
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members, err := mAPI.List(ctx.Background())
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if err != nil {
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return nodes, urlsMap, err
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}
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for _, member := range members {
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urls, err := types.NewURLs(member.PeerURLs)
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if err != nil {
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return nodes, urlsMap, err
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}
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urlsMap[member.ID] = urls
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// ClientURLs of a member is a url which is used by this member to listen to the clients' requests. This url could be used
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// to create etcd client objects. In some use cases, multiple urls might be used, but we don't use that pattern.
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nodes = append(nodes, member.ClientURLs...)
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}
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return nodes, urlsMap, nil
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}
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