/
token.go
101 lines (87 loc) · 2.76 KB
/
token.go
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package keeper
import (
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/umee-network/umee/v4/x/leverage/types"
)
// CleanTokenRegistry deletes all blacklisted tokens in the leverage registry
// whose uToken supplies are zero. Called automatically on registry update.
func (k Keeper) CleanTokenRegistry(ctx sdk.Context) error {
tokens := k.GetAllRegisteredTokens(ctx)
for _, t := range tokens {
if t.Blacklist {
uDenom := types.ToUTokenDenom(t.BaseDenom)
uSupply := k.GetUTokenSupply(ctx, uDenom)
if uSupply.IsZero() {
err := k.deleteTokenSettings(ctx, t)
if err != nil {
return err
}
}
}
}
return nil
}
// deleteTokenSettings deletes a Token in the x/leverage module's KVStore.
// it should only be called by CleanTokenRegistry.
func (k Keeper) deleteTokenSettings(ctx sdk.Context, token types.Token) error {
store := ctx.KVStore(k.storeKey)
tokenKey := types.KeyRegisteredToken(token.BaseDenom)
store.Delete(tokenKey)
// call oracle hooks on deleted (not just blacklisted) token
k.hooks.AfterRegisteredTokenRemoved(ctx, token)
return nil
}
// SetTokenSettings stores a Token into the x/leverage module's KVStore.
func (k Keeper) SetTokenSettings(ctx sdk.Context, token types.Token) error {
if err := token.Validate(); err != nil {
return err
}
store := ctx.KVStore(k.storeKey)
tokenKey := types.KeyRegisteredToken(token.BaseDenom)
bz, err := k.cdc.Marshal(&token)
if err != nil {
return err
}
k.hooks.AfterTokenRegistered(ctx, token)
store.Set(tokenKey, bz)
return nil
}
// GetTokenSettings gets a token from the x/leverage module's KVStore.
func (k Keeper) GetTokenSettings(ctx sdk.Context, denom string) (types.Token, error) {
store := ctx.KVStore(k.storeKey)
tokenKey := types.KeyRegisteredToken(denom)
token := types.Token{}
bz := store.Get(tokenKey)
if len(bz) == 0 {
return token, types.ErrNotRegisteredToken.Wrap(denom)
}
err := k.cdc.Unmarshal(bz, &token)
return token, err
}
// SaveOrUpdateTokenSettingsToRegistry adds new tokens or updates the new tokens settings to registry.
func (k Keeper) SaveOrUpdateTokenSettingsToRegistry(
ctx sdk.Context, tokens []types.Token, registeredTokenDenoms map[string]bool, update bool,
) error {
for _, token := range tokens {
if err := token.Validate(); err != nil {
return err
}
}
for _, token := range tokens {
if update {
if _, ok := registeredTokenDenoms[token.BaseDenom]; !ok {
return types.ErrNotRegisteredToken.Wrapf("token %s is not registered", token.BaseDenom)
}
} else {
if _, ok := registeredTokenDenoms[token.BaseDenom]; ok {
return types.ErrDuplicateToken.Wrapf("token %s is already registered", token.BaseDenom)
}
}
}
for _, token := range tokens {
if err := k.SetTokenSettings(ctx, token); err != nil {
return err
}
}
return nil
}