forked from TrueCloudLab/neoneo-go
61 lines
1.5 KiB
Go
61 lines
1.5 KiB
Go
package syncmgr
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import (
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"github.com/CityOfZion/neo-go/pkg/chain"
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"github.com/CityOfZion/neo-go/pkg/wire/payload"
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)
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// blockModeOnBlock is called when the sync manager is block mode
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// and receives a block.
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func (s *Syncmgr) blockModeOnBlock(peer SyncPeer, block payload.Block) error {
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// Check if it is a future block
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// XXX: since we are storing blocks in memory, we do not want to store blocks
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// from the tip
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if block.Index > s.nextBlockIndex+2000 {
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return nil
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}
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if block.Index > s.nextBlockIndex {
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s.addToBlockPool(block)
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return nil
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}
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// Process Block
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err := s.processBlock(block)
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if err != nil && err != chain.ErrBlockAlreadyExists {
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return s.cfg.FetchBlockAgain(block.Hash)
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}
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// Check the block pool
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err = s.checkPool()
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if err != nil {
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return err
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}
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// Check if blockhashReceived == the header hash from last get headers this node performed
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// if not then increment and request next block
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if s.headerHash != block.Hash {
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nextHash, err := s.cfg.GetNextBlockHash()
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if err != nil {
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return err
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}
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return s.cfg.RequestBlock(nextHash, block.Index)
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}
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// If we are caught up then go into normal mode
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diff := peer.Height() - block.Index
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if diff <= cruiseHeight {
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s.syncmode = normalMode
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s.timer.Reset(blockTimer)
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return nil
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}
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// If not then we go back into headersMode and request more headers.
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s.syncmode = headersMode
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return s.cfg.RequestHeaders(block.Hash)
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}
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func (s *Syncmgr) blockModeOnHeaders(peer SyncPeer, hdrs []*payload.BlockBase) error {
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// We ignore headers when in this mode
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return nil
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}
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