nimbus-eth2/ncli/ncli_transition.nim

import
  confutils, chronicles,
  ../beacon_chain/spec/[crypto, datatypes, state_transition, presets],
  ../beacon_chain/extras,
  ../beacon_chain/ssz/[merkleization, ssz_serialization]

cli do(pre: string, blck: string, post: string, verifyStateRoot = true):
  let
    stateY = (ref HashedBeaconState)(
      data: SSZ.loadFile(pre, BeaconState),
    )
    blckX = SSZ.loadFile(blck, SignedBeaconBlock)
    flags = if not verifyStateRoot: {skipStateRootValidation} else: {}

  stateY.root = hash_tree_root(stateY.data)

  if not state_transition(defaultRuntimePreset, stateY[], blckX, flags, noRollback):
    error "State transition failed"
    quit 1
  else:
    SSZ.saveFile(post, stateY.data)
ncli - command line tools for working with .ssz files 2019-09-09 19:06:29 +00:00			`import`
			`confutils, chronicles,`
Working test suite with run-time presets 2020-07-07 23:02:14 +00:00			`../beacon_chain/spec/[crypto, datatypes, state_transition, presets],`
state_transition implements the spec fairly directly (#1220) 2020-06-23 13:54:24 +00:00			`../beacon_chain/extras,`
reorder ssz (#1099) * reorder ssz * split into hash_trees and ssz_serialization, roughly, for hashing and IO * move bitseqs into ssz (from stew) * clean up imports * docs, imports 2020-06-03 13:52:02 +00:00			`../beacon_chain/ssz/[merkleization, ssz_serialization]`
ncli - command line tools for working with .ssz files 2019-09-09 19:06:29 +00:00
Trusted blocks (#1227) * cleanups * fix ncli state root check flag * add block dump to ncli_db * limit ncli_db benchmark length * tone down finalization logs * introduce trusted blocks We only store blocks whose signature we've verified in the database - as such, there's no need to check it again, and most importantly, no need to deserialize the signature when loading from database. 50x startup time improvement, 200x block load time improvement. * fix rewinding when deposits have invalid signature * speed up ancestor iteration by avoiding copy * avoid deserializing signatures for trusted data * load blocks lazily when rewinding (less memory used) * chronicles workarounds * document trustedbeaconblock 2020-06-25 10:23:10 +00:00			`cli do(pre: string, blck: string, post: string, verifyStateRoot = true):`
ncli - command line tools for working with .ssz files 2019-09-09 19:06:29 +00:00			`let`
ssz: move ref support outside (#943) * ssz: move ref support outside Instead of allocating ref's inside SSZ, move it to separate helper: * makes `ref` allocations explicit * less magic inside SSZ * `ref` in nim generally means reference whereas SSZ was loading as value - if a type indeed used references it would get copies instead of references to a single value on roundtrip which is unexpected TODO: EF tests would benefit from some refactoring since they all do the same thing practically.. Co-authored-by: Zahary Karadjov <zahary@gmail.com> 2020-04-29 20:12:07 +00:00			`stateY = (ref HashedBeaconState)(`
			`data: SSZ.loadFile(pre, BeaconState),`
			`)`
SignedBeaconBlock in state_transition (#773) * using SignedBeaconBlock in state_transition 2020-02-29 15:15:44 +00:00			`blckX = SSZ.loadFile(blck, SignedBeaconBlock)`
Trusted blocks (#1227) * cleanups * fix ncli state root check flag * add block dump to ncli_db * limit ncli_db benchmark length * tone down finalization logs * introduce trusted blocks We only store blocks whose signature we've verified in the database - as such, there's no need to check it again, and most importantly, no need to deserialize the signature when loading from database. 50x startup time improvement, 200x block load time improvement. * fix rewinding when deposits have invalid signature * speed up ancestor iteration by avoiding copy * avoid deserializing signatures for trusted data * load blocks lazily when rewinding (less memory used) * chronicles workarounds * document trustedbeaconblock 2020-06-25 10:23:10 +00:00			`flags = if not verifyStateRoot: {skipStateRootValidation} else: {}`
ncli - command line tools for working with .ssz files 2019-09-09 19:06:29 +00:00
ssz: move ref support outside (#943) * ssz: move ref support outside Instead of allocating ref's inside SSZ, move it to separate helper: * makes `ref` allocations explicit * less magic inside SSZ * `ref` in nim generally means reference whereas SSZ was loading as value - if a type indeed used references it would get copies instead of references to a single value on roundtrip which is unexpected TODO: EF tests would benefit from some refactoring since they all do the same thing practically.. Co-authored-by: Zahary Karadjov <zahary@gmail.com> 2020-04-29 20:12:07 +00:00			`stateY.root = hash_tree_root(stateY.data)`

Working test suite with run-time presets 2020-07-07 23:02:14 +00:00			`if not state_transition(defaultRuntimePreset, stateY[], blckX, flags, noRollback):`
ncli - command line tools for working with .ssz files 2019-09-09 19:06:29 +00:00			`error "State transition failed"`
return nonzero exit code on state transition failure (#996) 2020-05-08 14:16:44 +00:00			`quit 1`
avoid state copy in state transition (#930) In BlockPool, we keep the head state around, so it's trivial to restore the temporary state there and keep going as if nothing happened. This solves 3 problems: * stack space - the state copy on mainnet is huge * GC scanning - using stack space for state slows down the GC significantly * reckless copying - the copy itself takes a long time In state_sim, we'll do the same and allocate on heap - this helps a little with GC - without it, the collection of the temporary strings created with `toHex` while printing the json dominates the trace. 2020-04-26 19:13:33 +00:00			`else:`
			`SSZ.saveFile(post, stateY.data)`