mirror of
https://github.com/etcd-io/etcd.git
synced 2024-09-27 06:25:44 +00:00
83 lines
2.1 KiB
Go
83 lines
2.1 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 etcdserver
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import (
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"net/http"
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"strconv"
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etcdErr "github.com/coreos/etcd/error"
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)
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func (p *participant) DeleteHandler(w http.ResponseWriter, req *http.Request) error {
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if !p.node.IsLeader() {
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return p.redirect(w, req, p.node.Leader())
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}
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key := req.URL.Path[len("/v2/keys"):]
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recursive := (req.FormValue("recursive") == "true")
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dir := (req.FormValue("dir") == "true")
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req.ParseForm()
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_, valueOk := req.Form["prevValue"]
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_, indexOk := req.Form["prevIndex"]
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if !valueOk && !indexOk {
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return p.serveDelete(w, req, key, dir, recursive)
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}
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var err error
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prevIndex := uint64(0)
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prevValue := req.Form.Get("prevValue")
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if indexOk {
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prevIndexStr := req.Form.Get("prevIndex")
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prevIndex, err = strconv.ParseUint(prevIndexStr, 10, 64)
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// bad previous index
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if err != nil {
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return etcdErr.NewError(etcdErr.EcodeIndexNaN, "CompareAndDelete", p.Store.Index())
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}
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}
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if valueOk {
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if prevValue == "" {
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return etcdErr.NewError(etcdErr.EcodePrevValueRequired, "CompareAndDelete", p.Store.Index())
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}
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}
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return p.serveCAD(w, req, key, prevValue, prevIndex)
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}
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func (p *participant) serveDelete(w http.ResponseWriter, req *http.Request, key string, dir, recursive bool) error {
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ret, err := p.Delete(key, dir, recursive)
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if err == nil {
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p.handleRet(w, ret)
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return nil
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}
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return err
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}
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func (p *participant) serveCAD(w http.ResponseWriter, req *http.Request, key string, prevValue string, prevIndex uint64) error {
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ret, err := p.CAD(key, prevValue, prevIndex)
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if err == nil {
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p.handleRet(w, ret)
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return nil
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}
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return err
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}
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