github.1485827954.workers.dev/ethereum/go-ethereum@v1.14.3/eth/sync_test.go (about)

     1  // Copyright 2015 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 eth
    18  
    19  import (
    20  	"testing"
    21  	"time"
    22  
    23  	"github.com/ethereum/go-ethereum/eth/downloader"
    24  	"github.com/ethereum/go-ethereum/eth/protocols/eth"
    25  	"github.com/ethereum/go-ethereum/eth/protocols/snap"
    26  	"github.com/ethereum/go-ethereum/p2p"
    27  	"github.com/ethereum/go-ethereum/p2p/enode"
    28  )
    29  
    30  // Tests that snap sync is disabled after a successful sync cycle.
    31  func TestSnapSyncDisabling68(t *testing.T) { testSnapSyncDisabling(t, eth.ETH68, snap.SNAP1) }
    32  
    33  // Tests that snap sync gets disabled as soon as a real block is successfully
    34  // imported into the blockchain.
    35  func testSnapSyncDisabling(t *testing.T, ethVer uint, snapVer uint) {
    36  	t.Parallel()
    37  
    38  	// Create an empty handler and ensure it's in snap sync mode
    39  	empty := newTestHandler()
    40  	if !empty.handler.snapSync.Load() {
    41  		t.Fatalf("snap sync disabled on pristine blockchain")
    42  	}
    43  	defer empty.close()
    44  
    45  	// Create a full handler and ensure snap sync ends up disabled
    46  	full := newTestHandlerWithBlocks(1024)
    47  	if full.handler.snapSync.Load() {
    48  		t.Fatalf("snap sync not disabled on non-empty blockchain")
    49  	}
    50  	defer full.close()
    51  
    52  	// Sync up the two handlers via both `eth` and `snap`
    53  	caps := []p2p.Cap{{Name: "eth", Version: ethVer}, {Name: "snap", Version: snapVer}}
    54  
    55  	emptyPipeEth, fullPipeEth := p2p.MsgPipe()
    56  	defer emptyPipeEth.Close()
    57  	defer fullPipeEth.Close()
    58  
    59  	emptyPeerEth := eth.NewPeer(ethVer, p2p.NewPeer(enode.ID{1}, "", caps), emptyPipeEth, empty.txpool)
    60  	fullPeerEth := eth.NewPeer(ethVer, p2p.NewPeer(enode.ID{2}, "", caps), fullPipeEth, full.txpool)
    61  	defer emptyPeerEth.Close()
    62  	defer fullPeerEth.Close()
    63  
    64  	go empty.handler.runEthPeer(emptyPeerEth, func(peer *eth.Peer) error {
    65  		return eth.Handle((*ethHandler)(empty.handler), peer)
    66  	})
    67  	go full.handler.runEthPeer(fullPeerEth, func(peer *eth.Peer) error {
    68  		return eth.Handle((*ethHandler)(full.handler), peer)
    69  	})
    70  
    71  	emptyPipeSnap, fullPipeSnap := p2p.MsgPipe()
    72  	defer emptyPipeSnap.Close()
    73  	defer fullPipeSnap.Close()
    74  
    75  	emptyPeerSnap := snap.NewPeer(snapVer, p2p.NewPeer(enode.ID{1}, "", caps), emptyPipeSnap)
    76  	fullPeerSnap := snap.NewPeer(snapVer, p2p.NewPeer(enode.ID{2}, "", caps), fullPipeSnap)
    77  
    78  	go empty.handler.runSnapExtension(emptyPeerSnap, func(peer *snap.Peer) error {
    79  		return snap.Handle((*snapHandler)(empty.handler), peer)
    80  	})
    81  	go full.handler.runSnapExtension(fullPeerSnap, func(peer *snap.Peer) error {
    82  		return snap.Handle((*snapHandler)(full.handler), peer)
    83  	})
    84  	// Wait a bit for the above handlers to start
    85  	time.Sleep(250 * time.Millisecond)
    86  
    87  	// Check that snap sync was disabled
    88  	if err := empty.handler.downloader.BeaconSync(downloader.SnapSync, full.chain.CurrentBlock(), nil); err != nil {
    89  		t.Fatal("sync failed:", err)
    90  	}
    91  	empty.handler.enableSyncedFeatures()
    92  
    93  	if empty.handler.snapSync.Load() {
    94  		t.Fatalf("snap sync not disabled after successful synchronisation")
    95  	}
    96  }