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querier.go
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querier.go
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package keeper
import (
"fmt"
abci "github.com/tendermint/tendermint/abci/types"
"github.com/cosmos/cosmos-sdk/codec"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/x/distribution/types"
)
// nolint
const (
QueryParams = "params"
QueryValidatorOutstandingRewards = "validator_outstanding_rewards"
QueryValidatorCommission = "validator_commission"
QueryValidatorSlashes = "validator_slashes"
QueryDelegationRewards = "delegation_rewards"
QueryDelegatorTotalRewards = "delegator_total_rewards"
QueryDelegatorValidators = "delegator_validators"
QueryWithdrawAddr = "withdraw_addr"
ParamCommunityTax = "community_tax"
ParamBaseProposerReward = "base_proposer_reward"
ParamBonusProposerReward = "bonus_proposer_reward"
ParamWithdrawAddrEnabled = "withdraw_addr_enabled"
)
func NewQuerier(k Keeper) sdk.Querier {
return func(ctx sdk.Context, path []string, req abci.RequestQuery) ([]byte, sdk.Error) {
switch path[0] {
case QueryParams:
return queryParams(ctx, path[1:], req, k)
case QueryValidatorOutstandingRewards:
return queryValidatorOutstandingRewards(ctx, path[1:], req, k)
case QueryValidatorCommission:
return queryValidatorCommission(ctx, path[1:], req, k)
case QueryValidatorSlashes:
return queryValidatorSlashes(ctx, path[1:], req, k)
case QueryDelegationRewards:
return queryDelegationRewards(ctx, path[1:], req, k)
case QueryDelegatorTotalRewards:
return queryDelegatorTotalRewards(ctx, path[1:], req, k)
case QueryDelegatorValidators:
return queryDelegatorValidators(ctx, path[1:], req, k)
case QueryWithdrawAddr:
return queryDelegatorWithdrawAddress(ctx, path[1:], req, k)
default:
return nil, sdk.ErrUnknownRequest("unknown distr query endpoint")
}
}
}
func queryParams(ctx sdk.Context, path []string, req abci.RequestQuery, k Keeper) ([]byte, sdk.Error) {
switch path[0] {
case ParamCommunityTax:
bz, err := codec.MarshalJSONIndent(k.cdc, k.GetCommunityTax(ctx))
if err != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marshal result to JSON", err.Error()))
}
return bz, nil
case ParamBaseProposerReward:
bz, err := codec.MarshalJSONIndent(k.cdc, k.GetBaseProposerReward(ctx))
if err != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marshal result to JSON", err.Error()))
}
return bz, nil
case ParamBonusProposerReward:
bz, err := codec.MarshalJSONIndent(k.cdc, k.GetBonusProposerReward(ctx))
if err != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marshal result to JSON", err.Error()))
}
return bz, nil
case ParamWithdrawAddrEnabled:
bz, err := codec.MarshalJSONIndent(k.cdc, k.GetWithdrawAddrEnabled(ctx))
if err != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marshal result to JSON", err.Error()))
}
return bz, nil
default:
return nil, sdk.ErrUnknownRequest(fmt.Sprintf("%s is not a valid query request path", req.Path))
}
}
// params for query 'custom/distr/validator_outstanding_rewards'
type QueryValidatorOutstandingRewardsParams struct {
ValidatorAddress sdk.ValAddress `json:"validator_address"`
}
// creates a new instance of QueryValidatorOutstandingRewardsParams
func NewQueryValidatorOutstandingRewardsParams(validatorAddr sdk.ValAddress) QueryValidatorOutstandingRewardsParams {
return QueryValidatorOutstandingRewardsParams{
ValidatorAddress: validatorAddr,
}
}
func queryValidatorOutstandingRewards(ctx sdk.Context, path []string, req abci.RequestQuery, k Keeper) ([]byte, sdk.Error) {
var params QueryValidatorOutstandingRewardsParams
err := k.cdc.UnmarshalJSON(req.Data, ¶ms)
if err != nil {
return nil, sdk.ErrUnknownRequest(sdk.AppendMsgToErr("incorrectly formatted request data", err.Error()))
}
bz, err := codec.MarshalJSONIndent(k.cdc, k.GetValidatorOutstandingRewards(ctx, params.ValidatorAddress))
if err != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marshal result to JSON", err.Error()))
}
return bz, nil
}
// params for query 'custom/distr/validator_commission'
type QueryValidatorCommissionParams struct {
ValidatorAddress sdk.ValAddress `json:"validator_address"`
}
// creates a new instance of QueryValidatorCommissionParams
func NewQueryValidatorCommissionParams(validatorAddr sdk.ValAddress) QueryValidatorCommissionParams {
return QueryValidatorCommissionParams{
ValidatorAddress: validatorAddr,
}
}
func queryValidatorCommission(ctx sdk.Context, path []string, req abci.RequestQuery, k Keeper) ([]byte, sdk.Error) {
var params QueryValidatorCommissionParams
err := k.cdc.UnmarshalJSON(req.Data, ¶ms)
if err != nil {
return nil, sdk.ErrUnknownRequest(sdk.AppendMsgToErr("incorrectly formatted request data", err.Error()))
}
commission := k.GetValidatorAccumulatedCommission(ctx, params.ValidatorAddress)
bz, err := codec.MarshalJSONIndent(k.cdc, commission)
if err != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marshal result to JSON", err.Error()))
}
return bz, nil
}
// params for query 'custom/distr/validator_slashes'
type QueryValidatorSlashesParams struct {
ValidatorAddress sdk.ValAddress `json:"validator_address"`
StartingHeight uint64 `json:"starting_height"`
EndingHeight uint64 `json:"ending_height"`
}
// creates a new instance of QueryValidatorSlashesParams
func NewQueryValidatorSlashesParams(validatorAddr sdk.ValAddress, startingHeight uint64, endingHeight uint64) QueryValidatorSlashesParams {
return QueryValidatorSlashesParams{
ValidatorAddress: validatorAddr,
StartingHeight: startingHeight,
EndingHeight: endingHeight,
}
}
func queryValidatorSlashes(ctx sdk.Context, path []string, req abci.RequestQuery, k Keeper) ([]byte, sdk.Error) {
var params QueryValidatorSlashesParams
err := k.cdc.UnmarshalJSON(req.Data, ¶ms)
if err != nil {
return nil, sdk.ErrUnknownRequest(sdk.AppendMsgToErr("incorrectly formatted request data", err.Error()))
}
events := make([]types.ValidatorSlashEvent, 0)
k.IterateValidatorSlashEventsBetween(ctx, params.ValidatorAddress, params.StartingHeight, params.EndingHeight,
func(height uint64, event types.ValidatorSlashEvent) (stop bool) {
events = append(events, event)
return false
},
)
bz, err := codec.MarshalJSONIndent(k.cdc, events)
if err != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marshal result to JSON", err.Error()))
}
return bz, nil
}
// params for query 'custom/distr/delegation_rewards'
type QueryDelegationRewardsParams struct {
DelegatorAddress sdk.AccAddress `json:"delegator_address"`
ValidatorAddress sdk.ValAddress `json:"validator_address"`
}
// creates a new instance of QueryDelegationRewardsParams
func NewQueryDelegationRewardsParams(delegatorAddr sdk.AccAddress, validatorAddr sdk.ValAddress) QueryDelegationRewardsParams {
return QueryDelegationRewardsParams{
DelegatorAddress: delegatorAddr,
ValidatorAddress: validatorAddr,
}
}
func queryDelegationRewards(ctx sdk.Context, _ []string, req abci.RequestQuery, k Keeper) ([]byte, sdk.Error) {
var params QueryDelegationRewardsParams
err := k.cdc.UnmarshalJSON(req.Data, ¶ms)
if err != nil {
return nil, sdk.ErrUnknownRequest(sdk.AppendMsgToErr("incorrectly formatted request data", err.Error()))
}
// cache-wrap context as to not persist state changes during querying
ctx, _ = ctx.CacheContext()
val := k.stakingKeeper.Validator(ctx, params.ValidatorAddress)
del := k.stakingKeeper.Delegation(ctx, params.DelegatorAddress, params.ValidatorAddress)
endingPeriod := k.incrementValidatorPeriod(ctx, val)
rewards := k.calculateDelegationRewards(ctx, val, del, endingPeriod)
bz, err := codec.MarshalJSONIndent(k.cdc, rewards)
if err != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marshal result to JSON", err.Error()))
}
return bz, nil
}
// params for query 'custom/distr/delegator_total_rewards' and 'custom/distr/delegator_validators'
type QueryDelegatorParams struct {
DelegatorAddress sdk.AccAddress `json:"delegator_address"`
}
// creates a new instance of QueryDelegationRewardsParams
func NewQueryDelegatorParams(delegatorAddr sdk.AccAddress) QueryDelegatorParams {
return QueryDelegatorParams{
DelegatorAddress: delegatorAddr,
}
}
func queryDelegatorTotalRewards(ctx sdk.Context, _ []string, req abci.RequestQuery, k Keeper) ([]byte, sdk.Error) {
var params QueryDelegatorParams
err := k.cdc.UnmarshalJSON(req.Data, ¶ms)
if err != nil {
return nil, sdk.ErrUnknownRequest(sdk.AppendMsgToErr("incorrectly formatted request data", err.Error()))
}
// cache-wrap context as to not persist state changes during querying
ctx, _ = ctx.CacheContext()
var totalRewards sdk.DecCoins
k.stakingKeeper.IterateDelegations(
ctx, params.DelegatorAddress,
func(_ int64, del sdk.Delegation) (stop bool) {
val := k.stakingKeeper.Validator(ctx, del.GetValidatorAddr())
endingPeriod := k.incrementValidatorPeriod(ctx, val)
rewards := k.calculateDelegationRewards(ctx, val, del, endingPeriod)
totalRewards = totalRewards.Add(rewards)
return false
},
)
bz, err := codec.MarshalJSONIndent(k.cdc, totalRewards)
if err != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marshal result to JSON", err.Error()))
}
return bz, nil
}
func queryDelegatorValidators(ctx sdk.Context, _ []string, req abci.RequestQuery, k Keeper) ([]byte, sdk.Error) {
var params QueryDelegatorParams
err := k.cdc.UnmarshalJSON(req.Data, ¶ms)
if err != nil {
return nil, sdk.ErrUnknownRequest(sdk.AppendMsgToErr("incorrectly formatted request data", err.Error()))
}
// cache-wrap context as to not persist state changes during querying
ctx, _ = ctx.CacheContext()
var validators []sdk.ValAddress
k.stakingKeeper.IterateDelegations(
ctx, params.DelegatorAddress,
func(_ int64, del sdk.Delegation) (stop bool) {
validators = append(validators[:], del.GetValidatorAddr())
return false
},
)
bz, err := codec.MarshalJSONIndent(k.cdc, validators)
if err != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marshal result to JSON", err.Error()))
}
return bz, nil
}
// params for query 'custom/distr/withdraw_addr'
type QueryDelegatorWithdrawAddrParams struct {
DelegatorAddress sdk.AccAddress `json:"delegator_address"`
}
// NewQueryDelegatorWithdrawAddrParams creates a new instance of QueryDelegatorWithdrawAddrParams.
func NewQueryDelegatorWithdrawAddrParams(delegatorAddr sdk.AccAddress) QueryDelegatorWithdrawAddrParams {
return QueryDelegatorWithdrawAddrParams{DelegatorAddress: delegatorAddr}
}
func queryDelegatorWithdrawAddress(ctx sdk.Context, _ []string, req abci.RequestQuery, k Keeper) ([]byte, sdk.Error) {
var params QueryDelegatorWithdrawAddrParams
err := k.cdc.UnmarshalJSON(req.Data, ¶ms)
if err != nil {
return nil, sdk.ErrUnknownRequest(sdk.AppendMsgToErr("incorrectly formatted request data", err.Error()))
}
// cache-wrap context as to not persist state changes during querying
ctx, _ = ctx.CacheContext()
withdrawAddr := k.GetDelegatorWithdrawAddr(ctx, params.DelegatorAddress)
bz, err := codec.MarshalJSONIndent(k.cdc, withdrawAddr)
if err != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marshal result to JSON", err.Error()))
}
return bz, nil
}