main.go

package main

import (
	"log"
	"rtcagent/cli"
	"rtcagent/pkg/util/ebpf"
	"rtcagent/pkg/util/kernel"
	"runtime"

	_ "github.com/shuLhan/go-bindata" // add for bindata in Makefile
)

const (
	BtfNotSupport = "You can compile a no BTF version by yourself with command `make nocore`,Please read Makefile for more info."
)

var (
	enableCORE = "true"
)

func main() {

	kv, err := kernel.HostVersion()
	if err != nil {
		log.Fatal(err)
	}
	switch runtime.GOARCH {
	case "amd64":
		if kv < kernel.VersionCode(4, 18, 0) {
			log.Fatalf("Linux/Android Kernel (x86_64) version %v is not supported. Need > 4.18 .", kv)
		}
	case "arm64":
		if kv < kernel.VersionCode(5, 5, 0) {
			log.Fatalf("Linux/Android Kernel (aarch64) version %v is not supported. Need > 5.5 .", kv)
		}
	default:
		log.Fatalf("unsupported CPU arch:%v. ", runtime.GOARCH)
	}

	isContainer, err := ebpf.IsContainer()
	if err != nil {
		log.Fatal("Check container error:", err)
	}

	if isContainer {
		log.Printf("Your environment is a container. We will not detect the BTF config.")
	} else {
		enable, e := ebpf.IsEnableBPF()
		if e != nil {
			log.Fatalf("Kernel config read failed, error:%v", e)
		}

		if !enable {
			log.Fatalf("Kernel not support, error:%v", e)
		}

		if enableCORE == "true" {
			enable, e := ebpf.IsEnableBTF()
			if e != nil {
				log.Fatalf("Can't found BTF config with error:%v.\n"+BtfNotSupport, e)
			}
			if !enable {
				log.Fatal("BTF not support, please check it. shell: cat /boot/config-`uname -r` | grep CONFIG_DEBUG_INFO_BTF \n " +
					BtfNotSupport)
			}
		}
	}

	cli.Start()
}