forked from kubernetes-retired/heapster
/
action.go
229 lines (180 loc) · 5.08 KB
/
action.go
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/*
Copyright 2014 CoreOS, Inc.
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.
*/
package etcd
import (
"fmt"
"net/http"
"net/url"
"path"
"strconv"
"strings"
"time"
)
type Action interface {
fmt.Stringer
HTTPRequest() (*http.Request, error)
}
//TODO(bcwaldon): Should Delete be separate from CompareAndDelete?
type Delete struct {
Key string
Recursive bool
PreviousValue string
PreviousIndex uint64
}
func (del *Delete) String() string {
return fmt.Sprintf("{Delete %s}", del.Key)
}
func (del *Delete) HTTPRequest() (*http.Request, error) {
endpoint := v2URL(del.Key)
params := endpoint.Query()
params.Add("recursive", strconv.FormatBool(del.Recursive))
if del.PreviousValue != "" {
params.Add("prevValue", del.PreviousValue)
}
if del.PreviousIndex != 0 {
params.Add("prevIndex", strconv.FormatInt(int64(del.PreviousIndex), 10))
}
endpoint.RawQuery = params.Encode()
return http.NewRequest("DELETE", endpoint.String(), nil)
}
type Create struct {
Key string
Value string
TTL time.Duration
}
func (c *Create) String() string {
return fmt.Sprintf("{Create %s}", c.Key)
}
func (c *Create) HTTPRequest() (*http.Request, error) {
endpoint := v2URL(c.Key)
params := endpoint.Query()
params.Add("prevExist", "false")
endpoint.RawQuery = params.Encode()
form := url.Values{}
form.Set("value", c.Value)
ttl := uint64(c.TTL.Seconds())
if ttl > 0 {
form.Set("ttl", strconv.FormatInt(int64(ttl), 10))
}
body := strings.NewReader(form.Encode())
req, err := http.NewRequest("PUT", endpoint.String(), body)
if err != nil {
return nil, err
}
req.Header.Set("Content-Type", "application/x-www-form-urlencoded; param=value")
return req, nil
}
type Update struct {
Key string
Value string
TTL time.Duration
}
func (u *Update) String() string {
return fmt.Sprintf("{Update %s}", u.Key)
}
func (u *Update) HTTPRequest() (*http.Request, error) {
endpoint := v2URL(u.Key)
params := endpoint.Query()
params.Add("prevExist", "true")
endpoint.RawQuery = params.Encode()
form := url.Values{}
form.Set("value", u.Value)
ttl := int64(u.TTL.Seconds())
if ttl > 0 {
form.Set("ttl", strconv.FormatInt(ttl, 10))
}
body := strings.NewReader(form.Encode())
req, err := http.NewRequest("PUT", endpoint.String(), body)
if err != nil {
return nil, err
}
req.Header.Set("Content-Type", "application/x-www-form-urlencoded; param=value")
return req, nil
}
type Set struct {
Key string
Value string
TTL time.Duration
PreviousIndex uint64
PreviousValue string
}
func (s *Set) String() string {
return fmt.Sprintf("{Set %s}", s.Key)
}
func (s *Set) HTTPRequest() (*http.Request, error) {
endpoint := v2URL(s.Key)
params := endpoint.Query()
if s.PreviousIndex != 0 {
params.Add("prevIndex", strconv.FormatInt(int64(s.PreviousIndex), 10))
}
if s.PreviousValue != "" {
params.Add("prevValue", s.PreviousValue)
}
endpoint.RawQuery = params.Encode()
form := url.Values{}
form.Set("value", s.Value)
ttl := int64(s.TTL.Seconds())
if ttl > 0 {
form.Set("ttl", strconv.FormatInt(ttl, 10))
}
body := strings.NewReader(form.Encode())
req, err := http.NewRequest("PUT", endpoint.String(), body)
if err != nil {
return nil, err
}
req.Header.Set("Content-Type", "application/x-www-form-urlencoded; param=value")
return req, nil
}
type Get struct {
Key string
Sorted bool
Recursive bool
}
func (g *Get) String() string {
return fmt.Sprintf("{Get %s}", g.Key)
}
func (g *Get) HTTPRequest() (*http.Request, error) {
endpoint := v2URL(g.Key)
params := endpoint.Query()
params.Add("consistent", "true")
params.Add("sorted", strconv.FormatBool(g.Sorted))
params.Add("recursive", strconv.FormatBool(g.Recursive))
endpoint.RawQuery = params.Encode()
return http.NewRequest("GET", endpoint.String(), nil)
}
type Watch struct {
Key string
Recursive bool
WaitIndex uint64
}
func (w *Watch) String() string {
return fmt.Sprintf("{Watch %s}", w.Key)
}
func (w *Watch) HTTPRequest() (*http.Request, error) {
endpoint := v2URL(w.Key)
params := endpoint.Query()
params.Add("consistent", "true")
params.Add("wait", "true")
params.Add("recursive", strconv.FormatBool(w.Recursive))
if w.WaitIndex > 0 {
params.Set("waitIndex", strconv.FormatInt(int64(w.WaitIndex), 10))
}
endpoint.RawQuery = params.Encode()
return http.NewRequest("GET", endpoint.String(), nil)
}
// v2URL builds a url.URL with an appropriate Path for the v2 etcd API. The
// url.URL's Path attribute is constructed from the base v2 keys path and
// the provided relative path.
func v2URL(rel string) url.URL {
return url.URL{Path: path.Join("/v2/keys/", rel)}
}