mirror of https://github.com/poanetwork/quorum.git
eth/downloader: always reenter processing if not exiting
This commit is contained in:
Péter Szilágyi
parent
2f4cbe22f5
commit
55dd8fd621
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@ -33,23 +33,22 @@ var (
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)
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var (
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errBusy = errors.New("busy")
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errUnknownPeer = errors.New("peer is unknown or unhealthy")
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errBadPeer = errors.New("action from bad peer ignored")
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errStallingPeer = errors.New("peer is stalling")
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errBannedHead = errors.New("peer head hash already banned")
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errNoPeers = errors.New("no peers to keep download active")
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errPendingQueue = errors.New("pending items in queue")
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errTimeout = errors.New("timeout")
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errEmptyHashSet = errors.New("empty hash set by peer")
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errPeersUnavailable = errors.New("no peers available or all peers tried for block download process")
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errAlreadyInPool = errors.New("hash already in pool")
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errInvalidChain = errors.New("retrieved hash chain is invalid")
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errCrossCheckFailed = errors.New("block cross-check failed")
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errCancelHashFetch = errors.New("hash fetching canceled (requested)")
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errCancelBlockFetch = errors.New("block downloading canceled (requested)")
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errCancelChainImport = errors.New("chain importing canceled (requested)")
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errNoSyncActive = errors.New("no sync active")
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errBusy = errors.New("busy")
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errUnknownPeer = errors.New("peer is unknown or unhealthy")
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errBadPeer = errors.New("action from bad peer ignored")
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errStallingPeer = errors.New("peer is stalling")
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errBannedHead = errors.New("peer head hash already banned")
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errNoPeers = errors.New("no peers to keep download active")
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errPendingQueue = errors.New("pending items in queue")
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errTimeout = errors.New("timeout")
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errEmptyHashSet = errors.New("empty hash set by peer")
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errPeersUnavailable = errors.New("no peers available or all peers tried for block download process")
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errAlreadyInPool = errors.New("hash already in pool")
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errInvalidChain = errors.New("retrieved hash chain is invalid")
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errCrossCheckFailed = errors.New("block cross-check failed")
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errCancelHashFetch = errors.New("hash fetching canceled (requested)")
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errCancelBlockFetch = errors.New("block downloading canceled (requested)")
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errNoSyncActive = errors.New("no sync active")
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)
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// hashCheckFn is a callback type for verifying a hash's presence in the local chain.
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@ -719,7 +718,7 @@ func (d *Downloader) banBlocks(peerId string, head common.Hash) error {
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// between these state changes, a block may have arrived, but a processing
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// attempt denied, so we need to re-enter to ensure the block isn't left
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// to idle in the cache.
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func (d *Downloader) process() (err error) {
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func (d *Downloader) process() {
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// Make sure only one goroutine is ever allowed to process blocks at once
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if !atomic.CompareAndSwapInt32(&d.processing, 0, 1) {
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return
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@ -729,8 +728,8 @@ func (d *Downloader) process() (err error) {
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// the fresh blocks might have been rejected entry to to this present thread
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// not yet releasing the `processing` state.
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defer func() {
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if err == nil && d.queue.GetHeadBlock() != nil {
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err = d.process()
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if atomic.LoadInt32(&d.interrupt) == 0 && d.queue.GetHeadBlock() != nil {
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d.process()
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}
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}()
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// Release the lock upon exit (note, before checking for reentry!), and set
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@ -748,7 +747,7 @@ func (d *Downloader) process() (err error) {
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// Fetch the next batch of blocks
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blocks := d.queue.TakeBlocks()
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if len(blocks) == 0 {
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return nil
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return
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}
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// Reset the import statistics
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d.importLock.Lock()
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@ -762,7 +761,7 @@ func (d *Downloader) process() (err error) {
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for len(blocks) != 0 {
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// Check for any termination requests
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if atomic.LoadInt32(&d.interrupt) == 1 {
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return errCancelChainImport
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return
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}
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// Retrieve the first batch of blocks to insert
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max := int(math.Min(float64(len(blocks)), float64(maxBlockProcess)))
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@ -776,7 +775,7 @@ func (d *Downloader) process() (err error) {
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glog.V(logger.Debug).Infof("Block #%d import failed: %v", raw[index].NumberU64(), err)
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d.dropPeer(blocks[index].OriginPeer)
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d.cancel()
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return errCancelChainImport
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return
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}
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blocks = blocks[max:]
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}
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@ -749,22 +749,21 @@ func TestHashAttackerDropping(t *testing.T) {
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result error
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drop bool
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}{
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{nil, false}, // Sync succeeded, all is well
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{errBusy, false}, // Sync is already in progress, no problem
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{errUnknownPeer, false}, // Peer is unknown, was already dropped, don't double drop
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{errBadPeer, true}, // Peer was deemed bad for some reason, drop it
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{errStallingPeer, true}, // Peer was detected to be stalling, drop it
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{errBannedHead, true}, // Peer's head hash is a known bad hash, drop it
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{errNoPeers, false}, // No peers to download from, soft race, no issue
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{errPendingQueue, false}, // There are blocks still cached, wait to exhaust, no issue
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{errTimeout, true}, // No hashes received in due time, drop the peer
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{errEmptyHashSet, true}, // No hashes were returned as a response, drop as it's a dead end
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{errPeersUnavailable, true}, // Nobody had the advertised blocks, drop the advertiser
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{errInvalidChain, true}, // Hash chain was detected as invalid, definitely drop
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{errCrossCheckFailed, true}, // Hash-origin failed to pass a block cross check, drop
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{errCancelHashFetch, false}, // Synchronisation was canceled, origin may be innocent, don't drop
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{errCancelBlockFetch, false}, // Synchronisation was canceled, origin may be innocent, don't drop
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{errCancelChainImport, false}, // Synchronisation was canceled, origin may be innocent, don't drop
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{nil, false}, // Sync succeeded, all is well
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{errBusy, false}, // Sync is already in progress, no problem
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{errUnknownPeer, false}, // Peer is unknown, was already dropped, don't double drop
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{errBadPeer, true}, // Peer was deemed bad for some reason, drop it
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{errStallingPeer, true}, // Peer was detected to be stalling, drop it
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{errBannedHead, true}, // Peer's head hash is a known bad hash, drop it
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{errNoPeers, false}, // No peers to download from, soft race, no issue
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{errPendingQueue, false}, // There are blocks still cached, wait to exhaust, no issue
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{errTimeout, true}, // No hashes received in due time, drop the peer
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{errEmptyHashSet, true}, // No hashes were returned as a response, drop as it's a dead end
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{errPeersUnavailable, true}, // Nobody had the advertised blocks, drop the advertiser
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{errInvalidChain, true}, // Hash chain was detected as invalid, definitely drop
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{errCrossCheckFailed, true}, // Hash-origin failed to pass a block cross check, drop
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{errCancelHashFetch, false}, // Synchronisation was canceled, origin may be innocent, don't drop
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{errCancelBlockFetch, false}, // Synchronisation was canceled, origin may be innocent, don't drop
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}
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// Run the tests and check disconnection status
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tester := newTester()
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