git.delta.rocks / unique-network / refs/commits / 0744c08ebf22

1// Get live chain data on the URL provided with `forkFrom`, and 2// insert the necessary data into a chain spec to launch a new chain with.3// 4// ### Arguments5// - `rawSpec`: Path to the raw chain spec to modify6// - `forkFrom`: URL of the chain's WS port to get the data from7// 8// ### Usage9// `chainql --tla-code=rawSpec="import 'parachain-spec-raw.json'" --tla-str=forkFrom="wss://some-parachain.node:443" fork.jsonnet`1011function(rawSpec, forkFrom)12local sourceChainState = cql.chain(forkFrom).latest;1314local raw = local sourceRaw = sourceChainState._raw._preloadKeys; {15  [key]: cql.toHex(sourceRaw[key])16  for key in std.objectFields(sourceRaw)17  if sourceRaw[key] != null18};1920local21auraKeys = [22	sourceChainState.AuraExt._key.Authorities,23	sourceChainState.Aura._key.Authorities,24] + (if 'CollatorSelection' in sourceChainState then [25	sourceChainState.CollatorSelection._key.Candidates,26	sourceChainState.CollatorSelection._key.Invulnerables,27] else []),2829// Keys, which should be migrated from passed spec, rather than from forked chain30wantedKeys = [31	sourceChainState.ParachainInfo._key.ParachainId,32	sourceChainState.Sudo._key.Key,33	sourceChainState.System.BlockHash._key['0'],34	// Always [69, 69, 69, ..., 69, 69, 69]35	sourceChainState.System._key.ParentHash,36] + auraKeys,37// Keys to remove from original chain38unwantedPrefixes = [39	sourceChainState.Aura._key.CurrentSlot,40	// Ensure there will be no panics caused by unexpected kept state41	sourceChainState.ParachainSystem._key.ValidationData,42	sourceChainState.ParachainSystem._key.RelayStateProof,43	sourceChainState.ParachainSystem._key.HostConfiguration,44	sourceChainState.ParachainSystem._key.LastRelayChainBlockNumber,45	sourceChainState.ParachainSystem._key.LastDmqMqcHead,46	// Part of head47	sourceChainState.System._key.BlockHash,48	sourceChainState.System._key.Number,49	sourceChainState.System._key.Digest,50] + auraKeys,5152cleanupRaw(raw) = {53	[key]: raw[key]54	for key in std.objectFields(raw)55	if std.all(std.map(function(prefix) !std.startsWith(key, prefix), unwantedPrefixes))56};575859local originalRaw = rawSpec.genesis.raw.top;60local outSpec = rawSpec {61	genesis+: {62		raw+: {63			top: cleanupRaw(raw) {64				[key]: originalRaw[key]65				for key in wantedKeys66				if std.objectHas(originalRaw, key)67			},68		},69	},70};7172local pow10(n) = std.foldl(function(a, _) a * std.bigint('10'), std.range(0, n), std.bigint('1'));7374local75	aliceAccount = sourceChainState.System._encodeKey.Account(['0xd43593c715fdd31c61141abd04a99fd6822c8558854ccde39a5684e7a56da27d']),76	totalIssuance = sourceChainState.Balances._encodeKey.TotalIssuance([]),77	Munique = pow10(6 + 18),78;7980outSpec {81	genesis+: {82		raw+: {83			top+: {84				[totalIssuance]: sourceChainState.Balances._encodeValue.TotalIssuance(85					if std.objectHas(super, totalIssuance)86						then sourceChainState.Balances._decodeValue.TotalIssuance(super[totalIssuance])87						else std.bigint(0)88					- if std.objectHas(super, aliceAccount)89						then sourceChainState.System._decodeValue.Account(super[aliceAccount]).data.free90						else std.bigint(0)91					+ Munique92				),93				[aliceAccount]: sourceChainState.System._encodeValue.Account({94					nonce: 0,95					consumers: 3,96					providers: 1,97					sufficients: 0,98					data: {99						free: Munique,100						reserved: std.bigint('0'),101						misc_frozen: std.bigint('0'),102						fee_frozen: std.bigint('0'),103					},104				},)105			},106		},107	},108}