0g-chain/x/bep3/genesis.go
Kevin Davis 5fc85f10a6
Add rate limiting to bep3 assets (#623)
* feat: use only module account for bep3 txs

* wip: add time-based supply limits

* add tests and sims

* update genesis tests

* fix migration, committee tests

* update migrations

* fix: set previous block time in begin block

* update store decoder

* add additional bep3 params to committee

* revert incorrect rebase changes

* add migration test

* address review comments
2020-08-26 22:05:27 -04:00

123 lines
4.4 KiB
Go

package bep3
import (
"fmt"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/kava-labs/kava/x/bep3/types"
)
// InitGenesis initializes the store state from a genesis state.
func InitGenesis(ctx sdk.Context, keeper Keeper, supplyKeeper types.SupplyKeeper, gs GenesisState) {
// Check if the module account exists
moduleAcc := supplyKeeper.GetModuleAccount(ctx, ModuleName)
if moduleAcc == nil {
panic(fmt.Sprintf("%s module account has not been set", ModuleName))
}
if err := gs.Validate(); err != nil {
panic(fmt.Sprintf("failed to validate %s genesis state: %s", ModuleName, err))
}
keeper.SetPreviousBlockTime(ctx, gs.PreviousBlockTime)
keeper.SetParams(ctx, gs.Params)
for _, supply := range gs.Supplies {
keeper.SetAssetSupply(ctx, supply, supply.GetDenom())
}
var incomingSupplies sdk.Coins
var outgoingSupplies sdk.Coins
for _, swap := range gs.AtomicSwaps {
if swap.Validate() != nil {
panic(fmt.Sprintf("invalid swap %s", swap.GetSwapID()))
}
// Atomic swap assets must be both supported and active
err := keeper.ValidateLiveAsset(ctx, swap.Amount[0])
if err != nil {
panic(err)
}
keeper.SetAtomicSwap(ctx, swap)
// Add swap to block index or longterm storage based on swap.Status
// Increment incoming or outgoing supply based on swap.Direction
switch swap.Direction {
case Incoming:
switch swap.Status {
case Open:
// This index expires unclaimed swaps
keeper.InsertIntoByBlockIndex(ctx, swap)
incomingSupplies = incomingSupplies.Add(swap.Amount...)
case Expired:
incomingSupplies = incomingSupplies.Add(swap.Amount...)
case Completed:
// This index stores swaps until deletion
keeper.InsertIntoLongtermStorage(ctx, swap)
default:
panic(fmt.Sprintf("swap %s has invalid status %s", swap.GetSwapID(), swap.Status.String()))
}
case Outgoing:
switch swap.Status {
case Open:
keeper.InsertIntoByBlockIndex(ctx, swap)
outgoingSupplies = outgoingSupplies.Add(swap.Amount...)
case Expired:
outgoingSupplies = outgoingSupplies.Add(swap.Amount...)
case Completed:
keeper.InsertIntoLongtermStorage(ctx, swap)
default:
panic(fmt.Sprintf("swap %s has invalid status %s", swap.GetSwapID(), swap.Status.String()))
}
default:
panic(fmt.Sprintf("swap %s has invalid direction %s", swap.GetSwapID(), swap.Direction.String()))
}
}
// Asset's given incoming/outgoing supply much match the amount of coins in incoming/outgoing atomic swaps
supplies := keeper.GetAllAssetSupplies(ctx)
for _, supply := range supplies {
incomingSupply := incomingSupplies.AmountOf(supply.GetDenom())
if !supply.IncomingSupply.Amount.Equal(incomingSupply) {
panic(fmt.Sprintf("asset's incoming supply %s does not match amount %s in incoming atomic swaps",
supply.IncomingSupply, incomingSupply))
}
outgoingSupply := outgoingSupplies.AmountOf(supply.GetDenom())
if !supply.OutgoingSupply.Amount.Equal(outgoingSupply) {
panic(fmt.Sprintf("asset's outgoing supply %s does not match amount %s in outgoing atomic swaps",
supply.OutgoingSupply, outgoingSupply))
}
limit, err := keeper.GetSupplyLimit(ctx, supply.GetDenom())
if err != nil {
panic(err)
}
if supply.CurrentSupply.Amount.GT(limit.Limit) {
panic(fmt.Sprintf("asset's current supply %s is over the supply limit %s", supply.CurrentSupply, limit.Limit))
}
if supply.IncomingSupply.Amount.GT(limit.Limit) {
panic(fmt.Sprintf("asset's incoming supply %s is over the supply limit %s", supply.IncomingSupply, limit.Limit))
}
if supply.IncomingSupply.Amount.Add(supply.CurrentSupply.Amount).GT(limit.Limit) {
panic(fmt.Sprintf("asset's incoming supply + current supply %s is over the supply limit %s", supply.IncomingSupply.Add(supply.CurrentSupply), limit.Limit))
}
if supply.OutgoingSupply.Amount.GT(limit.Limit) {
panic(fmt.Sprintf("asset's outgoing supply %s is over the supply limit %s", supply.OutgoingSupply, limit.Limit))
}
}
}
// ExportGenesis writes the current store values to a genesis file, which can be imported again with InitGenesis
func ExportGenesis(ctx sdk.Context, k Keeper) (data GenesisState) {
params := k.GetParams(ctx)
swaps := k.GetAllAtomicSwaps(ctx)
supplies := k.GetAllAssetSupplies(ctx)
previousBlockTime, found := k.GetPreviousBlockTime(ctx)
if !found {
previousBlockTime = DefaultPreviousBlockTime
}
return NewGenesisState(params, swaps, supplies, previousBlockTime)
}