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invariants.go
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/
invariants.go
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package keeper
import (
"fmt"
sdk "github.com/okex/exchain/libs/cosmos-sdk/types"
"github.com/okex/exchain/libs/cosmos-sdk/x/auth/exported"
"github.com/okex/exchain/libs/cosmos-sdk/x/supply/internal/types"
)
// RegisterInvariants register all supply invariants
func RegisterInvariants(ir sdk.InvariantRegistry, k Keeper) {
ir.RegisterRoute(types.ModuleName, "total-supply", TotalSupply(k))
}
// AllInvariants runs all invariants of the supply module.
func AllInvariants(k Keeper) sdk.Invariant {
return func(ctx sdk.Context) (string, bool) {
return TotalSupply(k)(ctx)
}
}
// TotalSupply checks that the total supply reflects all the coins held in accounts
func TotalSupply(k Keeper) sdk.Invariant {
return func(ctx sdk.Context) (string, bool) {
var expectedTotal sdk.Coins
supply := k.GetSupply(ctx)
k.ak.IterateAccounts(ctx, func(acc exported.Account) bool {
expectedTotal = expectedTotal.Add(acc.GetCoins()...)
return false
})
var supplyCoins sdk.DecCoins
for _, coin := range supply.GetTotal() {
if !coin.Amount.IsZero() {
supplyCoins = supplyCoins.Add(coin)
}
}
broken := !expectedTotal.IsEqual(supplyCoins)
return sdk.FormatInvariant(types.ModuleName, "total supply",
fmt.Sprintf(
"\tsum of accounts coins: %v\n"+
"\tsupply.Total: %v\n",
expectedTotal, supply.GetTotal())), broken
}
}