kaspad/app/rpc/rpchandlers/submit_block.go

package rpchandlers

import (
	"github.com/kaspanet/kaspad/app/appmessage"
	"github.com/kaspanet/kaspad/app/protocol/protocolerrors"
	"github.com/kaspanet/kaspad/app/rpc/rpccontext"
	"github.com/kaspanet/kaspad/domain/consensus/ruleerrors"
	"github.com/kaspanet/kaspad/domain/consensus/utils/consensushashing"
	"github.com/kaspanet/kaspad/infrastructure/network/netadapter/router"
	"github.com/pkg/errors"
)

// HandleSubmitBlock handles the respectively named RPC command
func HandleSubmitBlock(context *rpccontext.Context, _ *router.Router, request appmessage.Message) (appmessage.Message, error) {
	submitBlockRequest := request.(*appmessage.SubmitBlockRequestMessage)

	if context.ProtocolManager.IsIBDRunning() {
		return &appmessage.SubmitBlockResponseMessage{
			Error:        appmessage.RPCErrorf("Block not submitted - IBD is running"),
			RejectReason: appmessage.RejectReasonIsInIBD,
		}, nil
	}

	domainBlock, err := appmessage.RPCBlockToDomainBlock(submitBlockRequest.Block)
	if err != nil {
		return &appmessage.SubmitBlockResponseMessage{
			Error:        appmessage.RPCErrorf("Could not parse block: %s", err),
			RejectReason: appmessage.RejectReasonBlockInvalid,
		}, nil
	}

	err = context.ProtocolManager.AddBlock(domainBlock)
	if err != nil {
		isProtocolOrRuleError := errors.As(err, &ruleerrors.RuleError{}) || errors.As(err, &protocolerrors.ProtocolError{})
		if !isProtocolOrRuleError {
			return nil, err
		}

		return &appmessage.SubmitBlockResponseMessage{
			Error:        appmessage.RPCErrorf("Block rejected. Reason: %s", err),
			RejectReason: appmessage.RejectReasonBlockInvalid,
		}, nil
	}

	log.Infof("Accepted block %s via submitBlock", consensushashing.BlockHash(domainBlock))

	response := appmessage.NewSubmitBlockResponseMessage()
	return response, nil
}