154 lines
3.4 KiB
Go
154 lines
3.4 KiB
Go
/*
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Copyright 2014 CoreOS, Inc.
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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 client
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"net/http"
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"net/url"
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"path"
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"time"
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"github.com/coreos/etcd/etcdserver/etcdhttp/httptypes"
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"github.com/coreos/etcd/pkg/types"
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)
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var (
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DefaultV2MembersPrefix = "/v2/members"
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)
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func NewMembersAPI(tr *http.Transport, ep string, to time.Duration) (MembersAPI, error) {
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u, err := url.Parse(ep)
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if err != nil {
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return nil, err
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}
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u.Path = path.Join(u.Path, DefaultV2MembersPrefix)
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c := &httpClient{
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transport: tr,
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endpoint: *u,
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timeout: to,
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}
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mAPI := httpMembersAPI{
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client: c,
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}
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return &mAPI, nil
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}
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type MembersAPI interface {
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List() ([]httptypes.Member, error)
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Add(peerURL string) (*httptypes.Member, error)
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Remove(mID string) error
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}
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type httpMembersAPI struct {
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client *httpClient
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}
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func (m *httpMembersAPI) List() ([]httptypes.Member, error) {
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code, body, err := m.client.doWithTimeout(&membersAPIActionList{})
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if err != nil {
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return nil, err
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}
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if err := assertStatusCode(http.StatusOK, code); err != nil {
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return nil, err
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}
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var mCollection httptypes.MemberCollection
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if err := json.Unmarshal(body, &mCollection); err != nil {
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return nil, err
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}
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return []httptypes.Member(mCollection), nil
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}
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func (m *httpMembersAPI) Add(peerURL string) (*httptypes.Member, error) {
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urls, err := types.NewURLs([]string{peerURL})
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if err != nil {
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return nil, err
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}
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req := &membersAPIActionAdd{peerURLs: urls}
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code, body, err := m.client.doWithTimeout(req)
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if err != nil {
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return nil, err
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}
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if err := assertStatusCode(http.StatusCreated, code); err != nil {
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return nil, err
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}
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var memb httptypes.Member
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if err := json.Unmarshal(body, &memb); err != nil {
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return nil, err
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}
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return &memb, nil
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}
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func (m *httpMembersAPI) Remove(memberID string) error {
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req := &membersAPIActionRemove{memberID: memberID}
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code, _, err := m.client.doWithTimeout(req)
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if err != nil {
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return err
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}
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return assertStatusCode(http.StatusNoContent, code)
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}
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type membersAPIActionList struct{}
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func (l *membersAPIActionList) httpRequest(ep url.URL) *http.Request {
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req, _ := http.NewRequest("GET", ep.String(), nil)
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return req
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}
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type membersAPIActionRemove struct {
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memberID string
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}
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func (d *membersAPIActionRemove) httpRequest(ep url.URL) *http.Request {
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ep.Path = path.Join(ep.Path, d.memberID)
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req, _ := http.NewRequest("DELETE", ep.String(), nil)
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return req
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}
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type membersAPIActionAdd struct {
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peerURLs types.URLs
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}
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func (a *membersAPIActionAdd) httpRequest(ep url.URL) *http.Request {
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m := httptypes.MemberCreateRequest{PeerURLs: a.peerURLs}
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b, _ := json.Marshal(&m)
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req, _ := http.NewRequest("POST", ep.String(), bytes.NewReader(b))
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req.Header.Set("Content-Type", "application/json")
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return req
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}
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func assertStatusCode(want, got int) (err error) {
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if want != got {
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err = fmt.Errorf("unexpected status code %d", got)
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}
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return err
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}
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