Scrapped plugin design in favour of simple command interfaces.

Setup docker build process for running server.
Deleted test files.

server/command_set_get.go

@@ -0,0 +1,111 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"strings"
+)
+
+type SetGetCommand struct {
+	name        string
+	commands    []string
+	description string
+}
+
+func (p *SetGetCommand) Name() string {
+	return p.name
+}
+
+func (p *SetGetCommand) Commands() []string {
+	return p.commands
+}
+
+func (p *SetGetCommand) Description() string {
+	return p.description
+}
+
+func (p *SetGetCommand) HandleCommand(cmd []string, server *Server, conn *bufio.Writer) {
+	switch strings.ToLower(cmd[0]) {
+	case "get":
+		handleGet(cmd, server, conn)
+	case "set":
+		handleSet(cmd, server, conn)
+	case "mget":
+		handleMGet(cmd, server, conn)
+	}
+}
+
+func handleGet(cmd []string, s *Server, conn *bufio.Writer) {
+
+	if len(cmd) != 2 {
+		conn.Write([]byte("-Error wrong number of args for GET command\r\n\n"))
+		conn.Flush()
+		return
+	}
+
+	s.Lock()
+	value := s.GetData(cmd[1])
+	s.Unlock()
+
+	switch value.(type) {
+	default:
+		conn.Write([]byte(fmt.Sprintf("+%v\r\n\n", value)))
+	case nil:
+		conn.Write([]byte("+nil\r\n\n"))
+	}
+	conn.Flush()
+}
+
+func handleMGet(cmd []string, s *Server, conn *bufio.Writer) {
+	if len(cmd) < 2 {
+		conn.Write([]byte("-Error wrong number of args for MGET command\r\n\n"))
+		conn.Flush()
+		return
+	}
+
+	vals := []string{}
+
+	s.Lock()
+
+	for _, key := range cmd[1:] {
+		switch s.GetData(key).(type) {
+		default:
+			vals = append(vals, fmt.Sprintf("%v", s.GetData(key)))
+		case nil:
+			vals = append(vals, "nil")
+		}
+	}
+
+	s.Unlock()
+
+	conn.Write([]byte(fmt.Sprintf("*%d\r\n", len(vals))))
+
+	for _, val := range vals {
+		conn.Write([]byte(fmt.Sprintf("$%d\r\n%s\r\n", len(val), val)))
+	}
+
+	conn.Write([]byte("\n"))
+	conn.Flush()
+}
+
+func handleSet(cmd []string, s *Server, conn *bufio.Writer) {
+	switch x := len(cmd); {
+	default:
+		conn.Write([]byte("-Error wrong number of args for SET command\r\n\n"))
+		conn.Flush()
+	case x == 3:
+		s.Lock()
+		s.SetData(cmd[1], AdaptType(cmd[2]))
+		s.Unlock()
+		conn.Write([]byte("+OK\r\n\n"))
+		conn.Flush()
+	}
+}
+
+func NewSetGetCommand() *SetGetCommand {
+	return &SetGetCommand{
+		name:        "GetCommand",
+		commands:    []string{"set", "get", "mget"},
+		description: "Handle basic SET, GET and MGET commands",
+	}
+}