9e5f03b6c4
With this commit, core/state's access to the underlying key/value database is mediated through an interface. Database errors are tracked in StateDB and returned by CommitTo or the new Error method. Motivation for this change: We can remove the light client's duplicated copy of core/state. The light client now supports node iteration, so tracing and storage enumeration can work with the light client (not implemented in this commit).
125 lines
4.3 KiB
Go
125 lines
4.3 KiB
Go
// Copyright 2016 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package les
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import (
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"context"
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"testing"
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"time"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/light"
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)
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var testBankSecureTrieKey = secAddr(testBankAddress)
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func secAddr(addr common.Address) []byte {
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return crypto.Keccak256(addr[:])
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}
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type accessTestFn func(db ethdb.Database, bhash common.Hash, number uint64) light.OdrRequest
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func TestBlockAccessLes1(t *testing.T) { testAccess(t, 1, tfBlockAccess) }
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func tfBlockAccess(db ethdb.Database, bhash common.Hash, number uint64) light.OdrRequest {
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return &light.BlockRequest{Hash: bhash, Number: number}
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}
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func TestReceiptsAccessLes1(t *testing.T) { testAccess(t, 1, tfReceiptsAccess) }
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func tfReceiptsAccess(db ethdb.Database, bhash common.Hash, number uint64) light.OdrRequest {
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return &light.ReceiptsRequest{Hash: bhash, Number: number}
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}
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func TestTrieEntryAccessLes1(t *testing.T) { testAccess(t, 1, tfTrieEntryAccess) }
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func tfTrieEntryAccess(db ethdb.Database, bhash common.Hash, number uint64) light.OdrRequest {
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return &light.TrieRequest{Id: light.StateTrieID(core.GetHeader(db, bhash, core.GetBlockNumber(db, bhash))), Key: testBankSecureTrieKey}
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}
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func TestCodeAccessLes1(t *testing.T) { testAccess(t, 1, tfCodeAccess) }
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func tfCodeAccess(db ethdb.Database, bhash common.Hash, number uint64) light.OdrRequest {
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header := core.GetHeader(db, bhash, core.GetBlockNumber(db, bhash))
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if header.Number.Uint64() < testContractDeployed {
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return nil
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}
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sti := light.StateTrieID(header)
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ci := light.StorageTrieID(sti, crypto.Keccak256Hash(testContractAddr[:]), common.Hash{})
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return &light.CodeRequest{Id: ci, Hash: crypto.Keccak256Hash(testContractCodeDeployed)}
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}
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func testAccess(t *testing.T, protocol int, fn accessTestFn) {
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// Assemble the test environment
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peers := newPeerSet()
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dist := newRequestDistributor(peers, make(chan struct{}))
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rm := newRetrieveManager(peers, dist, nil)
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db, _ := ethdb.NewMemDatabase()
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ldb, _ := ethdb.NewMemDatabase()
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odr := NewLesOdr(ldb, rm)
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pm := newTestProtocolManagerMust(t, false, 4, testChainGen, nil, nil, db)
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lpm := newTestProtocolManagerMust(t, true, 0, nil, peers, odr, ldb)
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_, err1, lpeer, err2 := newTestPeerPair("peer", protocol, pm, lpm)
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select {
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case <-time.After(time.Millisecond * 100):
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case err := <-err1:
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t.Fatalf("peer 1 handshake error: %v", err)
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case err := <-err2:
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t.Fatalf("peer 1 handshake error: %v", err)
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}
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lpm.synchronise(lpeer)
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test := func(expFail uint64) {
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for i := uint64(0); i <= pm.blockchain.CurrentHeader().Number.Uint64(); i++ {
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bhash := core.GetCanonicalHash(db, i)
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if req := fn(ldb, bhash, i); req != nil {
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ctx, cancel := context.WithTimeout(context.Background(), 200*time.Millisecond)
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defer cancel()
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err := odr.Retrieve(ctx, req)
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got := err == nil
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exp := i < expFail
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if exp && !got {
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t.Errorf("object retrieval failed")
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}
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if !exp && got {
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t.Errorf("unexpected object retrieval success")
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}
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}
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}
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}
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// temporarily remove peer to test odr fails
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peers.Unregister(lpeer.id)
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time.Sleep(time.Millisecond * 10) // ensure that all peerSetNotify callbacks are executed
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// expect retrievals to fail (except genesis block) without a les peer
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test(0)
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peers.Register(lpeer)
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time.Sleep(time.Millisecond * 10) // ensure that all peerSetNotify callbacks are executed
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lpeer.lock.Lock()
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lpeer.hasBlock = func(common.Hash, uint64) bool { return true }
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lpeer.lock.Unlock()
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// expect all retrievals to pass
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test(5)
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}
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