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query_plugins.go
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/
query_plugins.go
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package keeper
import (
"encoding/json"
wasmTypes "github.com/CosmWasm/go-cosmwasm/types"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
"github.com/cosmos/cosmos-sdk/x/bank"
"github.com/cosmos/cosmos-sdk/x/staking"
)
type QueryHandler struct {
Ctx sdk.Context
Plugins QueryPlugins
}
var _ wasmTypes.Querier = QueryHandler{}
func (q QueryHandler) Query(request wasmTypes.QueryRequest) ([]byte, error) {
if request.Bank != nil {
return q.Plugins.Bank(q.Ctx, request.Bank)
}
if request.Custom != nil {
return q.Plugins.Custom(q.Ctx, request.Custom)
}
if request.Staking != nil {
return q.Plugins.Staking(q.Ctx, request.Staking)
}
if request.Wasm != nil {
return q.Plugins.Wasm(q.Ctx, request.Wasm)
}
return nil, wasmTypes.Unknown{}
}
type CustomQuerier func(ctx sdk.Context, request json.RawMessage) ([]byte, error)
type QueryPlugins struct {
Bank func(ctx sdk.Context, request *wasmTypes.BankQuery) ([]byte, error)
Custom CustomQuerier
Staking func(ctx sdk.Context, request *wasmTypes.StakingQuery) ([]byte, error)
Wasm func(ctx sdk.Context, request *wasmTypes.WasmQuery) ([]byte, error)
}
func DefaultQueryPlugins(bank bank.ViewKeeper, staking staking.Keeper, wasm Keeper) QueryPlugins {
return QueryPlugins{
Bank: BankQuerier(bank),
Custom: NoCustomQuerier,
Staking: StakingQuerier(staking),
Wasm: WasmQuerier(wasm),
}
}
func (e QueryPlugins) Merge(o *QueryPlugins) QueryPlugins {
// only update if this is non-nil and then only set values
if o == nil {
return e
}
if o.Bank != nil {
e.Bank = o.Bank
}
if o.Custom != nil {
e.Custom = o.Custom
}
if o.Staking != nil {
e.Staking = o.Staking
}
if o.Wasm != nil {
e.Wasm = o.Wasm
}
return e
}
func BankQuerier(bank bank.ViewKeeper) func(ctx sdk.Context, request *wasmTypes.BankQuery) ([]byte, error) {
return func(ctx sdk.Context, request *wasmTypes.BankQuery) ([]byte, error) {
if request.AllBalances != nil {
addr, err := sdk.AccAddressFromBech32(request.AllBalances.Address)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrInvalidAddress, request.AllBalances.Address)
}
coins := bank.GetCoins(ctx, addr)
res := wasmTypes.AllBalancesResponse{
Amount: convertSdkCoinsToWasmCoins(coins),
}
return json.Marshal(res)
}
if request.Balance != nil {
addr, err := sdk.AccAddressFromBech32(request.Balance.Address)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrInvalidAddress, request.Balance.Address)
}
coins := bank.GetCoins(ctx, addr)
amount := coins.AmountOf(request.Balance.Denom)
res := wasmTypes.BalanceResponse{
Amount: wasmTypes.Coin{
Denom: request.Balance.Denom,
Amount: amount.String(),
},
}
return json.Marshal(res)
}
return nil, wasmTypes.UnsupportedRequest{"unknown BankQuery variant"}
}
}
func NoCustomQuerier(ctx sdk.Context, request json.RawMessage) ([]byte, error) {
return nil, wasmTypes.UnsupportedRequest{"custom"}
}
func StakingQuerier(keeper staking.Keeper) func(ctx sdk.Context, request *wasmTypes.StakingQuery) ([]byte, error) {
return func(ctx sdk.Context, request *wasmTypes.StakingQuery) ([]byte, error) {
if request.BondedDenom != nil {
denom := keeper.BondDenom(ctx)
res := wasmTypes.BondedDenomResponse{
Denom: denom,
}
return json.Marshal(res)
}
if request.Validators != nil {
validators := keeper.GetBondedValidatorsByPower(ctx)
//validators := keeper.GetAllValidators(ctx)
wasmVals := make([]wasmTypes.Validator, len(validators))
for i, v := range validators {
wasmVals[i] = wasmTypes.Validator{
Address: v.OperatorAddress.String(),
Commission: v.Commission.Rate.String(),
MaxCommission: v.Commission.MaxRate.String(),
MaxChangeRate: v.Commission.MaxChangeRate.String(),
}
}
res := wasmTypes.ValidatorsResponse{
Validators: wasmVals,
}
return json.Marshal(res)
}
if request.AllDelegations != nil {
delegator, err := sdk.AccAddressFromBech32(request.AllDelegations.Delegator)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrInvalidAddress, request.AllDelegations.Delegator)
}
sdkDels := keeper.GetAllDelegatorDelegations(ctx, delegator)
delegations, err := sdkToDelegations(ctx, keeper, sdkDels)
if err != nil {
return nil, err
}
res := wasmTypes.AllDelegationsResponse{
Delegations: delegations,
}
return json.Marshal(res)
}
if request.Delegation != nil {
delegator, err := sdk.AccAddressFromBech32(request.Delegation.Delegator)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrInvalidAddress, request.Delegation.Delegator)
}
validator, err := sdk.ValAddressFromBech32(request.Delegation.Validator)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrInvalidAddress, request.Delegation.Validator)
}
var res wasmTypes.DelegationResponse
d, found := keeper.GetDelegation(ctx, delegator, validator)
if found {
res.Delegation, err = sdkToFullDelegation(ctx, keeper, d)
if err != nil {
return nil, err
}
}
return json.Marshal(res)
}
return nil, wasmTypes.UnsupportedRequest{"unknown Staking variant"}
}
}
func sdkToDelegations(ctx sdk.Context, keeper staking.Keeper, delegations []staking.Delegation) (wasmTypes.Delegations, error) {
result := make([]wasmTypes.Delegation, len(delegations))
bondDenom := keeper.BondDenom(ctx)
for i, d := range delegations {
// shares to amount logic comes from here:
// https://github.com/cosmos/cosmos-sdk/blob/v0.38.3/x/staking/keeper/querier.go#L404
val, found := keeper.GetValidator(ctx, d.ValidatorAddress)
if !found {
return nil, sdkerrors.Wrap(staking.ErrNoValidatorFound, "can't load validator for delegation")
}
amount := sdk.NewCoin(bondDenom, val.TokensFromShares(d.Shares).TruncateInt())
// Accumulated Rewards???
// can relegate? other query for redelegations?
// keeper.GetRedelegation
result[i] = wasmTypes.Delegation{
Delegator: d.DelegatorAddress.String(),
Validator: d.ValidatorAddress.String(),
Amount: convertSdkCoinToWasmCoin(amount),
}
}
return result, nil
}
func sdkToFullDelegation(ctx sdk.Context, keeper staking.Keeper, delegation staking.Delegation) (*wasmTypes.FullDelegation, error) {
val, found := keeper.GetValidator(ctx, delegation.ValidatorAddress)
if !found {
return nil, sdkerrors.Wrap(staking.ErrNoValidatorFound, "can't load validator for delegation")
}
bondDenom := keeper.BondDenom(ctx)
amount := sdk.NewCoin(bondDenom, val.TokensFromShares(delegation.Shares).TruncateInt())
// can relegate? other query for redelegations?
// keeper.GetRedelegation
return &wasmTypes.FullDelegation{
Delegator: delegation.DelegatorAddress.String(),
Validator: delegation.ValidatorAddress.String(),
Amount: convertSdkCoinToWasmCoin(amount),
// TODO: AccumulatedRewards
AccumulatedRewards: wasmTypes.NewCoin(0, bondDenom),
// TODO: Determine redelegate
CanRedelegate: wasmTypes.NewCoin(0, bondDenom),
}, nil
}
func WasmQuerier(wasm Keeper) func(ctx sdk.Context, request *wasmTypes.WasmQuery) ([]byte, error) {
return func(ctx sdk.Context, request *wasmTypes.WasmQuery) ([]byte, error) {
if request.Smart != nil {
addr, err := sdk.AccAddressFromBech32(request.Smart.ContractAddr)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrInvalidAddress, request.Smart.ContractAddr)
}
return wasm.QuerySmart(ctx, addr, request.Smart.Msg)
}
if request.Raw != nil {
addr, err := sdk.AccAddressFromBech32(request.Raw.ContractAddr)
if err != nil {
return nil, sdkerrors.Wrap(sdkerrors.ErrInvalidAddress, request.Raw.ContractAddr)
}
models := wasm.QueryRaw(ctx, addr, request.Raw.Key)
// TODO: do we want to change the return value?
return json.Marshal(models)
}
return nil, wasmTypes.UnsupportedRequest{"unknown WasmQuery variant"}
}
}
func convertSdkCoinsToWasmCoins(coins []sdk.Coin) wasmTypes.Coins {
converted := make(wasmTypes.Coins, len(coins))
for i, c := range coins {
converted[i] = convertSdkCoinToWasmCoin(c)
}
return converted
}
func convertSdkCoinToWasmCoin(coin sdk.Coin) wasmTypes.Coin {
return wasmTypes.Coin{
Denom: coin.Denom,
Amount: coin.Amount.String(),
}
}