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package raft
import (
"io"
)
// Join command interface
type JoinCommand interface {
Command
NodeName() string
}
// Join command
type DefaultJoinCommand struct {
Name string `json:"name"`
ConnectionString string `json:"connectionString"`
}
// Leave command interface
type LeaveCommand interface {
Command
NodeName() string
}
// Leave command
type DefaultLeaveCommand struct {
Name string `json:"name"`
}
// NOP command
type NOPCommand struct {
}
// The name of the Join command in the log
func (c *DefaultJoinCommand) CommandName() string {
return "raft:join"
}
func (c *DefaultJoinCommand) Apply(server Server) (interface{}, error) {
err := server.AddPeer(c.Name, c.ConnectionString)
return []byte("join"), err
}
func (c *DefaultJoinCommand) NodeName() string {
return c.Name
}
// The name of the Leave command in the log
func (c *DefaultLeaveCommand) CommandName() string {
return "raft:leave"
}
func (c *DefaultLeaveCommand) Apply(server Server) (interface{}, error) {
err := server.RemovePeer(c.Name)
return []byte("leave"), err
}
func (c *DefaultLeaveCommand) NodeName() string {
return c.Name
}
// The name of the NOP command in the log
func (c NOPCommand) CommandName() string {
return "raft:nop"
}
func (c NOPCommand) Apply(server Server) (interface{}, error) {
return nil, nil
}
func (c NOPCommand) Encode(w io.Writer) error {
return nil
}
func (c NOPCommand) Decode(r io.Reader) error {
return nil
}
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