mirror of
https://github.com/etcd-io/etcd.git
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13b6c1e684
for i in github.com/BurntSushi/toml github.com/coreos/go-etcd/etcd github.com/coreos/go-log/log github.com/gorilla/context github.com/rcrowley/go-metrics bitbucket.org/kardianos/osext github.com/coreos/go-systemd/journal github.com/coreos/raft code.google.com/p/goprotobuf/proto ; do goven -copy -rewrite $i; done
38 lines
933 B
Go
38 lines
933 B
Go
package v2
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import (
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"github.com/coreos/etcd/log"
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"github.com/coreos/etcd/store"
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"github.com/coreos/etcd/third_party/github.com/coreos/raft"
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)
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func init() {
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raft.RegisterCommand(&CompareAndDeleteCommand{})
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}
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// The CompareAndDelete performs a conditional delete on a key in the store.
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type CompareAndDeleteCommand struct {
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Key string `json:"key"`
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PrevValue string `json:"prevValue"`
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PrevIndex uint64 `json:"prevIndex"`
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}
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// The name of the compareAndDelete command in the log
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func (c *CompareAndDeleteCommand) CommandName() string {
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return "etcd:compareAndDelete"
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}
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// Set the key-value pair if the current value of the key equals to the given prevValue
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func (c *CompareAndDeleteCommand) Apply(server raft.Server) (interface{}, error) {
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s, _ := server.StateMachine().(store.Store)
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e, err := s.CompareAndDelete(c.Key, c.PrevValue, c.PrevIndex)
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if err != nil {
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log.Debug(err)
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return nil, err
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}
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return e, nil
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}
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