github.com/theQRL/go-zond@v0.2.1/zond/handler_zond.go (about)

     1  // Copyright 2020 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package zond
    18  
    19  import (
    20  	"fmt"
    21  
    22  	"github.com/theQRL/go-zond/core"
    23  	"github.com/theQRL/go-zond/p2p/enode"
    24  	"github.com/theQRL/go-zond/zond/protocols/zond"
    25  )
    26  
    27  // zondHandler implements the zond.Backend interface to handle the various network
    28  // packets that are sent as replies or broadcasts.
    29  type zondHandler handler
    30  
    31  func (h *zondHandler) Chain() *core.BlockChain { return h.chain }
    32  func (h *zondHandler) TxPool() zond.TxPool     { return h.txpool }
    33  
    34  // RunPeer is invoked when a peer joins on the `zond` protocol.
    35  func (h *zondHandler) RunPeer(peer *zond.Peer, hand zond.Handler) error {
    36  	return (*handler)(h).runZondPeer(peer, hand)
    37  }
    38  
    39  // PeerInfo retrieves all known `zond` information about a peer.
    40  func (h *zondHandler) PeerInfo(id enode.ID) interface{} {
    41  	if p := h.peers.peer(id.String()); p != nil {
    42  		return p.info()
    43  	}
    44  	return nil
    45  }
    46  
    47  // AcceptTxs retrieves whether transaction processing is enabled on the node
    48  // or if inbound transactions should simply be dropped.
    49  func (h *zondHandler) AcceptTxs() bool {
    50  	return h.synced.Load()
    51  }
    52  
    53  // Handle is invoked from a peer's message handler when it receives a new remote
    54  // message that the handler couldn't consume and serve itself.
    55  func (h *zondHandler) Handle(peer *zond.Peer, packet zond.Packet) error {
    56  	// Consume any broadcasts and announces, forwarding the rest to the downloader
    57  	switch packet := packet.(type) {
    58  	case *zond.NewPooledTransactionHashesPacket:
    59  		return h.txFetcher.Notify(peer.ID(), packet.Types, packet.Sizes, packet.Hashes)
    60  
    61  	case *zond.TransactionsPacket:
    62  		return h.txFetcher.Enqueue(peer.ID(), *packet, false)
    63  
    64  	case *zond.PooledTransactionsResponse:
    65  		return h.txFetcher.Enqueue(peer.ID(), *packet, true)
    66  
    67  	default:
    68  		return fmt.Errorf("unexpected zond packet type: %T", packet)
    69  	}
    70  }