herald.go/main.go

package main

import (
	"context"
	"encoding/hex"
	"fmt"
	"log"
	"time"

	"github.com/lbryio/hub/db"
	"github.com/lbryio/hub/db/prefixes"
	pb "github.com/lbryio/hub/protobuf/go"
	"github.com/lbryio/hub/server"
	"github.com/lbryio/lbry.go/v2/extras/util"
	"google.golang.org/grpc"
)

func main() {

	ctx := context.Background()
	searchRequest := &pb.SearchRequest{}

	args := server.ParseArgs(searchRequest)

	if args.CmdType == server.ServeCmd {
		// This will cancel goroutines with the server finishes.
		ctxWCancel, cancel := context.WithCancel(ctx)
		defer cancel()

		s := server.MakeHubServer(ctxWCancel, args)
		s.Run()

		return
	} else if args.CmdType == server.DBCmd {
		dbVal, err := db.GetDB("/mnt/d/data/wallet/lbry-rocksdb/")
		if err != nil {
			log.Fatalln(err)
		}

		pr := &db.PrefixRow{
			Prefix:          prefixes.UTXO,
			KeyPackFunc:     nil,
			ValuePackFunc:   nil,
			KeyUnpackFunc:   db.UTXOKeyUnpack,
			ValueUnpackFunc: db.UTXOValueUnpack,
			DB:              dbVal,
		}

		b, err := hex.DecodeString("000013")
		if err != nil {
			log.Println(err)
		}
		stopKey := &db.UTXOKey{
			Prefix: prefixes.UTXO,
			HashX:  b,
			TxNum:  0,
			Nout:   0,
		}
		stop := db.UTXOKeyPackPartial(stopKey, 1)

		log.Print(hex.EncodeToString(stop))

		options := &db.IterOptions{
			FillCache:    false,
			Start:        nil,
			Stop:         stop,
			IncludeStart: true,
			IncludeStop:  false,
			IncludeKey:   true,
			IncludeValue: true,
		}

		db.OpenAndWriteDB(pr, options, "./resources/asdf.db")

		return
	}

	conn, err := grpc.Dial("localhost:"+args.Port,
		grpc.WithInsecure(),
		grpc.WithBlock(),
	)
	if err != nil {
		log.Fatalf("did not connect: %v", err)
	}
	defer conn.Close()

	c := pb.NewHubClient(conn)

	ctxWTimeout, cancelQuery := context.WithTimeout(ctx, time.Second)
	defer cancelQuery()

	log.Println(args)
	switch args.CmdType {
	case server.SearchCmd:
		r, err := c.Search(ctxWTimeout, searchRequest)
		if err != nil {
			log.Fatal(err)
		}

		log.Printf("found %d results\n", r.GetTotal())

		for _, t := range r.Txos {
			fmt.Printf("%s:%d\n", util.TxHashToTxId(t.TxHash), t.Nout)
		}
	default:
		log.Fatalln("Unknown Command Type!")
	}
}