Created plugin for PING command

server/Makefile

@@ -1,4 +1,5 @@
 build-plugins:
+	go build -buildmode=plugin -o bin/plugins/commands/command_ping.so plugins/commands/ping/ping.go
 	go build -buildmode=plugin -o bin/plugins/commands/command_setget.so plugins/commands/setget/setget.go
 
 build-server:

server/plugins/commands/ping/ping.go

@@ -0,0 +1,48 @@
+package main
+
+import "bufio"
+
+type Server interface {
+	GetData(key string) interface{}
+	SetData(key string, value interface{})
+}
+
+type plugin struct {
+	name        string
+	commands    []string
+	description string
+}
+
+var Plugin plugin
+
+func (p *plugin) Name() string {
+	return p.name
+}
+
+func (p *plugin) Commands() []string {
+	return p.commands
+}
+
+func (p *plugin) Description() string {
+	return p.description
+}
+
+func (p *plugin) HandleCommand(cmd []string, server interface{}, conn *bufio.Writer) {
+	switch len(cmd) {
+	default:
+		conn.Write([]byte("-Error wrong number of arguments for PING command\r\n\n"))
+		conn.Flush()
+	case 1:
+		conn.Write([]byte("+PONG\r\n\n"))
+		conn.Flush()
+	case 2:
+		conn.Write([]byte("+" + cmd[1] + "\r\n\n"))
+		conn.Flush()
+	}
+}
+
+func init() {
+	Plugin.name = "PingCommand"
+	Plugin.commands = []string{"ping"}
+	Plugin.description = "Handle PING command"
+}