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core, eth: roll back uncertain headers in failed fast syncs

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Péter Szilágyi
2015-10-09 16:21:47 +03:00
parent b97e34a8e4
commit a9d8dfc8e7
6 changed files with 180 additions and 15 deletions
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15
core/blockchain_test.go
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@@ -599,8 +599,8 @@ func testReorgBadHashes(t *testing.T, full bool) {
t.Errorf("last block gasLimit mismatch: have: %x, want %x", ncm.GasLimit(), blocks[2].Header().GasLimit)
}
} else {
if ncm.CurrentHeader().Hash() != genesis.Hash() {
t.Errorf("last header hash mismatch: have: %x, want %x", ncm.CurrentHeader().Hash(), genesis.Hash())
if ncm.CurrentHeader().Hash() != headers[2].Hash() {
t.Errorf("last header hash mismatch: have: %x, want %x", ncm.CurrentHeader().Hash(), headers[2].Hash())
}
}
}
@@ -775,6 +775,11 @@ func TestLightVsFastVsFullChainHeads(t *testing.T) {
height := uint64(1024)
blocks, receipts := GenerateChain(genesis, gendb, int(height), nil)
// Configure a subchain to roll back
remove := []common.Hash{}
for _, block := range blocks[height/2:] {
remove = append(remove, block.Hash())
}
// Create a small assertion method to check the three heads
assert := func(t *testing.T, kind string, chain *BlockChain, header uint64, fast uint64, block uint64) {
if num := chain.CurrentBlock().NumberU64(); num != block {
@@ -798,6 +803,8 @@ func TestLightVsFastVsFullChainHeads(t *testing.T) {
t.Fatalf("failed to process block %d: %v", n, err)
}
assert(t, "archive", archive, height, height, height)
archive.Rollback(remove)
assert(t, "archive", archive, height/2, height/2, height/2)
// Import the chain as a non-archive node and ensure all pointers are updated
fastDb, _ := ethdb.NewMemDatabase()
@@ -816,6 +823,8 @@ func TestLightVsFastVsFullChainHeads(t *testing.T) {
t.Fatalf("failed to insert receipt %d: %v", n, err)
}
assert(t, "fast", fast, height, height, 0)
fast.Rollback(remove)
assert(t, "fast", fast, height/2, height/2, 0)
// Import the chain as a light node and ensure all pointers are updated
lightDb, _ := ethdb.NewMemDatabase()
@@ -827,6 +836,8 @@ func TestLightVsFastVsFullChainHeads(t *testing.T) {
t.Fatalf("failed to insert header %d: %v", n, err)
}
assert(t, "light", light, height, 0, 0)
light.Rollback(remove)
assert(t, "light", light, height/2, 0, 0)
}
// Tests that chain reorganizations handle transaction removals and reinsertions.