github.com/c4dt/go-ethereum@v1.9.2/les/request_test.go (about)

     1  // Copyright 2016 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 les
    18  
    19  import (
    20  	"context"
    21  	"testing"
    22  	"time"
    23  
    24  	"github.com/ethereum/go-ethereum/common"
    25  	"github.com/ethereum/go-ethereum/core/rawdb"
    26  	"github.com/ethereum/go-ethereum/crypto"
    27  	"github.com/ethereum/go-ethereum/ethdb"
    28  	"github.com/ethereum/go-ethereum/light"
    29  )
    30  
    31  var testBankSecureTrieKey = secAddr(bankAddr)
    32  
    33  func secAddr(addr common.Address) []byte {
    34  	return crypto.Keccak256(addr[:])
    35  }
    36  
    37  type accessTestFn func(db ethdb.Database, bhash common.Hash, number uint64) light.OdrRequest
    38  
    39  func TestBlockAccessLes2(t *testing.T) { testAccess(t, 2, tfBlockAccess) }
    40  
    41  func tfBlockAccess(db ethdb.Database, bhash common.Hash, number uint64) light.OdrRequest {
    42  	return &light.BlockRequest{Hash: bhash, Number: number}
    43  }
    44  
    45  func TestReceiptsAccessLes2(t *testing.T) { testAccess(t, 2, tfReceiptsAccess) }
    46  
    47  func tfReceiptsAccess(db ethdb.Database, bhash common.Hash, number uint64) light.OdrRequest {
    48  	return &light.ReceiptsRequest{Hash: bhash, Number: number}
    49  }
    50  
    51  func TestTrieEntryAccessLes2(t *testing.T) { testAccess(t, 2, tfTrieEntryAccess) }
    52  
    53  func tfTrieEntryAccess(db ethdb.Database, bhash common.Hash, number uint64) light.OdrRequest {
    54  	if number := rawdb.ReadHeaderNumber(db, bhash); number != nil {
    55  		return &light.TrieRequest{Id: light.StateTrieID(rawdb.ReadHeader(db, bhash, *number)), Key: testBankSecureTrieKey}
    56  	}
    57  	return nil
    58  }
    59  
    60  func TestCodeAccessLes2(t *testing.T) { testAccess(t, 2, tfCodeAccess) }
    61  
    62  func tfCodeAccess(db ethdb.Database, bhash common.Hash, num uint64) light.OdrRequest {
    63  	number := rawdb.ReadHeaderNumber(db, bhash)
    64  	if number != nil {
    65  		return nil
    66  	}
    67  	header := rawdb.ReadHeader(db, bhash, *number)
    68  	if header.Number.Uint64() < testContractDeployed {
    69  		return nil
    70  	}
    71  	sti := light.StateTrieID(header)
    72  	ci := light.StorageTrieID(sti, crypto.Keccak256Hash(testContractAddr[:]), common.Hash{})
    73  	return &light.CodeRequest{Id: ci, Hash: crypto.Keccak256Hash(testContractCodeDeployed)}
    74  }
    75  
    76  func testAccess(t *testing.T, protocol int, fn accessTestFn) {
    77  	// Assemble the test environment
    78  	server, client, tearDown := newClientServerEnv(t, 4, protocol, nil, true)
    79  	defer tearDown()
    80  	client.pm.synchronise(client.rPeer)
    81  
    82  	test := func(expFail uint64) {
    83  		for i := uint64(0); i <= server.pm.blockchain.CurrentHeader().Number.Uint64(); i++ {
    84  			bhash := rawdb.ReadCanonicalHash(server.db, i)
    85  			if req := fn(client.db, bhash, i); req != nil {
    86  				ctx, cancel := context.WithTimeout(context.Background(), 200*time.Millisecond)
    87  				defer cancel()
    88  				err := client.pm.odr.Retrieve(ctx, req)
    89  				got := err == nil
    90  				exp := i < expFail
    91  				if exp && !got {
    92  					t.Errorf("object retrieval failed")
    93  				}
    94  				if !exp && got {
    95  					t.Errorf("unexpected object retrieval success")
    96  				}
    97  			}
    98  		}
    99  	}
   100  
   101  	// temporarily remove peer to test odr fails
   102  	client.peers.Unregister(client.rPeer.id)
   103  	time.Sleep(time.Millisecond * 10) // ensure that all peerSetNotify callbacks are executed
   104  	// expect retrievals to fail (except genesis block) without a les peer
   105  	test(0)
   106  
   107  	client.peers.Register(client.rPeer)
   108  	time.Sleep(time.Millisecond * 10) // ensure that all peerSetNotify callbacks are executed
   109  	client.rPeer.lock.Lock()
   110  	client.rPeer.hasBlock = func(common.Hash, uint64, bool) bool { return true }
   111  	client.rPeer.lock.Unlock()
   112  	// expect all retrievals to pass
   113  	test(5)
   114  }