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- ## Blockchain Reactor
-
- - coordinates the pool for syncing
- - coordinates the store for persistence
- - coordinates the playing of blocks towards the app using a sm.BlockExecutor
- - handles switching between fastsync and consensus
- - it is a p2p.BaseReactor
- - starts the pool.Start() and its poolRoutine()
- - registers all the concrete types and interfaces for serialisation
-
- ### poolRoutine
-
- - listens to these channels:
- - pool requests blocks from a specific peer by posting to requestsCh, block reactor then sends
- a &bcBlockRequestMessage for a specific height
- - pool signals timeout of a specific peer by posting to timeoutsCh
- - switchToConsensusTicker to periodically try and switch to consensus
- - trySyncTicker to periodically check if we have fallen behind and then catch-up sync
- - if there aren't any new blocks available on the pool it skips syncing
- - tries to sync the app by taking downloaded blocks from the pool, gives them to the app and stores
- them on disk
- - implements Receive which is called by the switch/peer
- - calls AddBlock on the pool when it receives a new block from a peer
-
- ## Block Pool
-
- - responsible for downloading blocks from peers
- - makeRequestersRoutine()
- - removes timeout peers
- - starts new requesters by calling makeNextRequester()
- - requestRoutine():
- - picks a peer and sends the request, then blocks until:
- - pool is stopped by listening to pool.Quit
- - requester is stopped by listening to Quit
- - request is redone
- - we receive a block
- - gotBlockCh is strange
-
- ## Block Store
-
- - persists blocks to disk
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