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genesis.go
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genesis.go
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package keeper
import (
"fmt"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/functionx/fx-core/x/gravity/types"
)
// InitGenesis starts a chain from a genesis state
func InitGenesis(ctx sdk.Context, k Keeper, data types.GenesisState) {
k.SetParams(ctx, data.Params)
// reset valsets in state
for _, vs := range data.Valsets {
k.StoreValset(ctx, &vs)
}
// reset valset confirmations in state
for _, conf := range data.ValsetConfirms {
k.SetValsetConfirm(ctx, conf)
}
// reset batches in state
for _, batch := range data.Batches {
k.StoreBatchUnsafe(ctx, &batch)
}
// reset batch confirmations in state
for _, conf := range data.BatchConfirms {
k.SetBatchConfirm(ctx, &conf)
}
// reset pool transactions in state
for _, tx := range data.UnbatchedTransfers {
if err := k.setPoolEntry(ctx, &tx); err != nil {
panic(err)
}
}
// reset attestations in state
for _, att := range data.Attestations {
claim, err := k.UnpackAttestationClaim(&att)
if err != nil {
panic("couldn't cast to claim")
}
k.SetAttestation(ctx, claim.GetEventNonce(), claim.ClaimHash(), &att)
}
k.setLastObservedEventNonce(ctx, data.LastObservedNonce)
// reset attestation state of specific validators
// this must be done after the above to be correct
for _, att := range data.Attestations {
claim, err := k.UnpackAttestationClaim(&att)
if err != nil {
panic("couldn't cast to claim")
}
// reconstruct the latest event nonce for every validator
// if somehow this genesis state is saved when all attestations
// have been cleaned up GetLastEventNonceByOracle handles that case
//
// if we where to save and load the last event nonce for every validator
// then we would need to carry that state forever across all chain restarts
// but since we've already had to handle the edge case of new validators joining
// while all attestations have already been cleaned up we can do this instead and
// not carry around every validators event nonce counter forever.
for _, vote := range att.Votes {
val, err := sdk.ValAddressFromBech32(vote)
if err != nil {
panic(err)
}
last := k.GetLastEventNonceByValidator(ctx, val)
if claim.GetEventNonce() > last {
k.setLastEventNonceByValidator(ctx, val, claim.GetEventNonce())
}
}
}
// reset delegate keys in state
for _, keys := range data.DelegateKeys {
err := keys.ValidateBasic()
if err != nil {
panic("Invalid delegate key in Genesis!")
}
val, err := sdk.ValAddressFromBech32(keys.Validator)
if err != nil {
panic(err)
}
orch, err := sdk.AccAddressFromBech32(keys.Orchestrator)
if err != nil {
panic(err)
}
// set the orchestrator address
k.SetOrchestratorValidator(ctx, val, orch)
// set the ethereum address
k.SetEthAddressForValidator(ctx, val, keys.EthAddress)
}
// populate state with cosmos originated denom-erc20 mapping
for _, item := range data.Erc20ToDenoms {
k.setFxOriginatedDenomToERC20(ctx, item.Denom, item.Erc20)
}
moduleAcc := k.ak.GetModuleAccount(ctx, types.ModuleName)
balances := k.bankKeeper.GetAllBalances(ctx, moduleAcc.GetAddress())
if balances.IsZero() {
if err := k.bankKeeper.SetBalances(ctx, moduleAcc.GetAddress(), data.ModuleCoins); err != nil {
panic(fmt.Errorf("mint module coins err!!!module:%v, coins:%v,err:%v", types.ModuleName, data.ModuleCoins, err))
}
k.ak.SetModuleAccount(ctx, moduleAcc)
}
}
// ExportGenesis exports all the state needed to restart the chain
// from the current state of the chain
func ExportGenesis(ctx sdk.Context, k Keeper) *types.GenesisState {
genesisState := &types.GenesisState{
Params: k.GetParams(ctx),
LastObservedNonce: k.GetLastObservedEventNonce(ctx),
}
for _, address := range k.GetDelegateKeys(ctx) {
genesisState.DelegateKeys = append(genesisState.DelegateKeys, *address)
}
for _, valset := range k.GetValsets(ctx) {
genesisState.Valsets = append(genesisState.Valsets, *valset)
}
k.IterateERC20ToDenom(ctx, func(key []byte, erc20ToDenom *types.ERC20ToDenom) bool {
genesisState.Erc20ToDenoms = append(genesisState.Erc20ToDenoms, *erc20ToDenom)
return false
})
for _, batch := range k.GetOutgoingTxBatches(ctx) {
genesisState.Batches = append(genesisState.Batches, *batch)
}
for _, tx := range k.GetPoolTransactions(ctx) {
genesisState.UnbatchedTransfers = append(genesisState.UnbatchedTransfers, *tx)
}
for _, vs := range genesisState.Valsets {
for _, cfg := range k.GetValsetConfirms(ctx, vs.Nonce) {
genesisState.ValsetConfirms = append(genesisState.ValsetConfirms, *cfg)
}
}
for _, batch := range genesisState.Batches {
genesisState.BatchConfirms = append(genesisState.BatchConfirms, k.GetBatchConfirmByNonceAndTokenContract(ctx, batch.BatchNonce, batch.TokenContract)...)
}
for _, attestations := range k.GetAttestationMapping(ctx) {
genesisState.Attestations = append(genesisState.Attestations, attestations...)
}
return genesisState
}