Makefile and agent start.

agent/config/config.go

@@ -0,0 +1,87 @@
+package config
+
+import (
+	"crypto/rand"
+	"encoding/hex"
+	"log"
+	"os"
+	"strings"
+)
+
+type Config struct {
+	DNS        string
+	ManagerURL string
+	AgentPort  string
+	AgentID    string
+}
+
+var Cfg *Config
+
+func init() {
+	Cfg = &Config{
+		AgentPort: "5087", // default
+	}
+}
+
+func LoadConfig() {
+	paths := []string{".env", "../.env"}
+	for _, p := range paths {
+		content, err := os.ReadFile(p)
+		if err == nil {
+			parseEnv(string(content))
+			break
+		}
+	}
+
+	if h := os.Getenv("MANAGER_URL"); h != "" {
+		Cfg.ManagerURL = h
+	}
+	if Cfg.ManagerURL == "" {
+		Cfg.ManagerURL = "http://localhost:5086" // Default
+	}
+
+	if d := os.Getenv("DNS"); d != "" {
+		Cfg.DNS = d
+	}
+
+	loadOrGenerateAgentID()
+}
+
+func parseEnv(content string) {
+	lines := strings.Split(content, "\n")
+	for _, line := range lines {
+		line = strings.TrimSpace(line)
+		if line == "" || strings.HasPrefix(line, "#") {
+			continue
+		}
+		parts := strings.SplitN(line, "=", 2)
+		if len(parts) == 2 {
+			os.Setenv(parts[0], parts[1])
+		}
+	}
+}
+
+func loadOrGenerateAgentID() {
+	path := "agent_id.txt"
+	data, err := os.ReadFile(path)
+	if err == nil {
+		Cfg.AgentID = strings.TrimSpace(string(data))
+		if Cfg.AgentID != "" {
+			return
+		}
+	}
+
+	// Generate new AgentID
+	b := make([]byte, 8)
+	rand.Read(b)
+	Cfg.AgentID = "agent-" + hex.EncodeToString(b)
+	err = os.WriteFile(path, []byte(Cfg.AgentID), 0600)
+	if err != nil {
+		log.Printf("Warning: failed to save agent_id.txt: %v", err)
+	}
+}
+
+func ResetAgentID() {
+	os.Remove("agent_id.txt")
+	loadOrGenerateAgentID()
+}