200 lines
7.0 KiB
Go
200 lines
7.0 KiB
Go
// Copyright 2015 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package core
|
|
|
|
import (
|
|
"runtime"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/ethereum/go-ethereum/consensus/ethash"
|
|
"github.com/ethereum/go-ethereum/core/types"
|
|
"github.com/ethereum/go-ethereum/core/vm"
|
|
"github.com/ethereum/go-ethereum/ethdb"
|
|
"github.com/ethereum/go-ethereum/params"
|
|
)
|
|
|
|
// Tests that simple header verification works, for both good and bad blocks.
|
|
func TestHeaderVerification(t *testing.T) {
|
|
// Create a simple chain to verify
|
|
var (
|
|
testdb, _ = ethdb.NewMemDatabase()
|
|
gspec = &Genesis{Config: params.TestChainConfig}
|
|
genesis = gspec.MustCommit(testdb)
|
|
blocks, _ = GenerateChain(params.TestChainConfig, genesis, ethash.NewFaker(), testdb, 8, nil)
|
|
)
|
|
headers := make([]*types.Header, len(blocks))
|
|
for i, block := range blocks {
|
|
headers[i] = block.Header()
|
|
}
|
|
// Run the header checker for blocks one-by-one, checking for both valid and invalid nonces
|
|
chain, _ := NewBlockChain(testdb, nil, params.TestChainConfig, ethash.NewFaker(), vm.Config{})
|
|
defer chain.Stop()
|
|
|
|
for i := 0; i < len(blocks); i++ {
|
|
for j, valid := range []bool{true, false} {
|
|
var results <-chan error
|
|
|
|
if valid {
|
|
engine := ethash.NewFaker()
|
|
_, results = engine.VerifyHeaders(chain, []*types.Header{headers[i]}, []bool{true})
|
|
} else {
|
|
engine := ethash.NewFakeFailer(headers[i].Number.Uint64())
|
|
_, results = engine.VerifyHeaders(chain, []*types.Header{headers[i]}, []bool{true})
|
|
}
|
|
// Wait for the verification result
|
|
select {
|
|
case result := <-results:
|
|
if (result == nil) != valid {
|
|
t.Errorf("test %d.%d: validity mismatch: have %v, want %v", i, j, result, valid)
|
|
}
|
|
case <-time.After(time.Second):
|
|
t.Fatalf("test %d.%d: verification timeout", i, j)
|
|
}
|
|
// Make sure no more data is returned
|
|
select {
|
|
case result := <-results:
|
|
t.Fatalf("test %d.%d: unexpected result returned: %v", i, j, result)
|
|
case <-time.After(25 * time.Millisecond):
|
|
}
|
|
}
|
|
chain.InsertChain(blocks[i : i+1])
|
|
}
|
|
}
|
|
|
|
// Tests that concurrent header verification works, for both good and bad blocks.
|
|
func TestHeaderConcurrentVerification2(t *testing.T) { testHeaderConcurrentVerification(t, 2) }
|
|
func TestHeaderConcurrentVerification8(t *testing.T) { testHeaderConcurrentVerification(t, 8) }
|
|
func TestHeaderConcurrentVerification32(t *testing.T) { testHeaderConcurrentVerification(t, 32) }
|
|
|
|
func testHeaderConcurrentVerification(t *testing.T, threads int) {
|
|
// Create a simple chain to verify
|
|
var (
|
|
testdb, _ = ethdb.NewMemDatabase()
|
|
gspec = &Genesis{Config: params.TestChainConfig}
|
|
genesis = gspec.MustCommit(testdb)
|
|
blocks, _ = GenerateChain(params.TestChainConfig, genesis, ethash.NewFaker(), testdb, 8, nil)
|
|
)
|
|
headers := make([]*types.Header, len(blocks))
|
|
seals := make([]bool, len(blocks))
|
|
|
|
for i, block := range blocks {
|
|
headers[i] = block.Header()
|
|
seals[i] = true
|
|
}
|
|
// Set the number of threads to verify on
|
|
old := runtime.GOMAXPROCS(threads)
|
|
defer runtime.GOMAXPROCS(old)
|
|
|
|
// Run the header checker for the entire block chain at once both for a valid and
|
|
// also an invalid chain (enough if one arbitrary block is invalid).
|
|
for i, valid := range []bool{true, false} {
|
|
var results <-chan error
|
|
|
|
if valid {
|
|
chain, _ := NewBlockChain(testdb, nil, params.TestChainConfig, ethash.NewFaker(), vm.Config{})
|
|
_, results = chain.engine.VerifyHeaders(chain, headers, seals)
|
|
chain.Stop()
|
|
} else {
|
|
chain, _ := NewBlockChain(testdb, nil, params.TestChainConfig, ethash.NewFakeFailer(uint64(len(headers)-1)), vm.Config{})
|
|
_, results = chain.engine.VerifyHeaders(chain, headers, seals)
|
|
chain.Stop()
|
|
}
|
|
// Wait for all the verification results
|
|
checks := make(map[int]error)
|
|
for j := 0; j < len(blocks); j++ {
|
|
select {
|
|
case result := <-results:
|
|
checks[j] = result
|
|
|
|
case <-time.After(time.Second):
|
|
t.Fatalf("test %d.%d: verification timeout", i, j)
|
|
}
|
|
}
|
|
// Check nonce check validity
|
|
for j := 0; j < len(blocks); j++ {
|
|
want := valid || (j < len(blocks)-2) // We chose the last-but-one nonce in the chain to fail
|
|
if (checks[j] == nil) != want {
|
|
t.Errorf("test %d.%d: validity mismatch: have %v, want %v", i, j, checks[j], want)
|
|
}
|
|
if !want {
|
|
// A few blocks after the first error may pass verification due to concurrent
|
|
// workers. We don't care about those in this test, just that the correct block
|
|
// errors out.
|
|
break
|
|
}
|
|
}
|
|
// Make sure no more data is returned
|
|
select {
|
|
case result := <-results:
|
|
t.Fatalf("test %d: unexpected result returned: %v", i, result)
|
|
case <-time.After(25 * time.Millisecond):
|
|
}
|
|
}
|
|
}
|
|
|
|
// Tests that aborting a header validation indeed prevents further checks from being
|
|
// run, as well as checks that no left-over goroutines are leaked.
|
|
func TestHeaderConcurrentAbortion2(t *testing.T) { testHeaderConcurrentAbortion(t, 2) }
|
|
func TestHeaderConcurrentAbortion8(t *testing.T) { testHeaderConcurrentAbortion(t, 8) }
|
|
func TestHeaderConcurrentAbortion32(t *testing.T) { testHeaderConcurrentAbortion(t, 32) }
|
|
|
|
func testHeaderConcurrentAbortion(t *testing.T, threads int) {
|
|
// Create a simple chain to verify
|
|
var (
|
|
testdb, _ = ethdb.NewMemDatabase()
|
|
gspec = &Genesis{Config: params.TestChainConfig}
|
|
genesis = gspec.MustCommit(testdb)
|
|
blocks, _ = GenerateChain(params.TestChainConfig, genesis, ethash.NewFaker(), testdb, 1024, nil)
|
|
)
|
|
headers := make([]*types.Header, len(blocks))
|
|
seals := make([]bool, len(blocks))
|
|
|
|
for i, block := range blocks {
|
|
headers[i] = block.Header()
|
|
seals[i] = true
|
|
}
|
|
// Set the number of threads to verify on
|
|
old := runtime.GOMAXPROCS(threads)
|
|
defer runtime.GOMAXPROCS(old)
|
|
|
|
// Start the verifications and immediately abort
|
|
chain, _ := NewBlockChain(testdb, nil, params.TestChainConfig, ethash.NewFakeDelayer(time.Millisecond), vm.Config{})
|
|
defer chain.Stop()
|
|
|
|
abort, results := chain.engine.VerifyHeaders(chain, headers, seals)
|
|
close(abort)
|
|
|
|
// Deplete the results channel
|
|
verified := 0
|
|
for depleted := false; !depleted; {
|
|
select {
|
|
case result := <-results:
|
|
if result != nil {
|
|
t.Errorf("header %d: validation failed: %v", verified, result)
|
|
}
|
|
verified++
|
|
case <-time.After(50 * time.Millisecond):
|
|
depleted = true
|
|
}
|
|
}
|
|
// Check that abortion was honored by not processing too many POWs
|
|
if verified > 2*threads {
|
|
t.Errorf("verification count too large: have %d, want below %d", verified, 2*threads)
|
|
}
|
|
}
|