blockchain: Refactor to use new chain view. #1344
Merged
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This requires #1338.
This refactors and simplifies the code in blockchain to use the new more efficient chain views.
An overview of the logic changes are as follows:
inMainChain
from block nodes since that can now be efficiently determined by using the chain viewbestNode
was usedNodeByHeight
everywhere height map was usedBlockLocator
definition tochain.go
BlockLocatorFromHash
andLatestBlockLocator
tochain.go
fetchMainChainBlockByNode
BlockByHeight
MainChainHasBlock
findPreviousCheckpoint
IsCheckpointCandidate
This is work towards #1145.