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querier.go
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querier.go
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package account
import (
"fmt"
"github.com/cosmos/cosmos-sdk/codec"
sdk "github.com/cosmos/cosmos-sdk/types"
abci "github.com/tendermint/tendermint/abci/types"
)
// query endpoints supported by the truchain Querier
const (
QueryAppAccount = "account"
QueryAppAccounts = "accounts"
QueryPrimaryAccount = "primary_account"
QueryPrimaryAccounts = "primary_accounts"
QueryParams = "params"
)
// QueryAppAccountParams are params for querying app accounts by address queries
type QueryAppAccountParams struct {
Address sdk.AccAddress `json:"address"`
}
// QueryAppAccountsParams are params for querying app accounts by address queries
type QueryAppAccountsParams struct {
Addresses []sdk.AccAddress `json:"addresses"`
}
// QueryPrimaryAccountParams are params for querying app accounts by address queries
type QueryPrimaryAccountParams struct {
Address sdk.AccAddress `json:"address"`
}
// QueryPrimaryAccountParams are params for querying app accounts by address queries
type QueryPrimaryAccountsParams struct {
Addresses []sdk.AccAddress `json:"addresses"`
}
// NewQuerier creates a new querier
func NewQuerier(keeper Keeper) sdk.Querier {
return func(ctx sdk.Context, path []string, request abci.RequestQuery) ([]byte, sdk.Error) {
switch path[0] {
case QueryAppAccount:
return queryAppAccount(ctx, request, keeper)
case QueryAppAccounts:
return queryAppAccounts(ctx, request, keeper)
case QueryPrimaryAccount:
return queryPrimaryAccount(ctx, request, keeper)
case QueryPrimaryAccounts:
return queryPrimaryAccounts(ctx, request, keeper)
case QueryParams:
return queryParams(ctx, keeper)
default:
return nil, sdk.ErrUnknownRequest(fmt.Sprintf("Unknown truchain query endpoint: auth/%s", path[0]))
}
}
}
func queryAppAccount(ctx sdk.Context, request abci.RequestQuery, k Keeper) (result []byte, err sdk.Error) {
params := QueryAppAccountParams{}
if err = unmarshalQueryParams(request, ¶ms); err != nil {
return
}
appAccount, ok := k.getAppAccount(ctx, params.Address)
if !ok {
return nil, ErrAppAccountNotFound(params.Address)
}
result, jsonErr := codec.MarshalJSONIndent(k.codec, appAccount)
if jsonErr != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marshal result to JSON", jsonErr.Error()))
}
return result, nil
}
func queryPrimaryAccount(ctx sdk.Context, request abci.RequestQuery, k Keeper) (result []byte, err sdk.Error) {
params := QueryPrimaryAccountParams{}
if err = unmarshalQueryParams(request, ¶ms); err != nil {
return
}
primaryAccount, err := k.PrimaryAccount(ctx, params.Address)
if err != nil {
return nil, ErrAppAccountNotFound(params.Address)
}
result, jsonErr := codec.MarshalJSONIndent(k.codec, primaryAccount)
if jsonErr != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marshal result to JSON", jsonErr.Error()))
}
return result, nil
}
func queryAppAccounts(ctx sdk.Context, request abci.RequestQuery, k Keeper) (result []byte, err sdk.Error) {
params := QueryAppAccountsParams{}
if err = unmarshalQueryParams(request, ¶ms); err != nil {
return
}
accounts := make([]AppAccount, 0, len(params.Addresses))
for _, addr := range params.Addresses {
appAccount, ok := k.getAppAccount(ctx, addr)
if !ok {
return nil, ErrAppAccountNotFound(addr)
}
accounts = append(accounts, appAccount)
}
result, jsonErr := codec.MarshalJSONIndent(k.codec, accounts)
if jsonErr != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marshal result to JSON", jsonErr.Error()))
}
return result, nil
}
func queryPrimaryAccounts(ctx sdk.Context, request abci.RequestQuery, k Keeper) (result []byte, err sdk.Error) {
params := QueryPrimaryAccountsParams{}
if err = unmarshalQueryParams(request, ¶ms); err != nil {
return
}
accounts := make([]PrimaryAccount, 0, len(params.Addresses))
for _, addr := range params.Addresses {
primaryAccount, err := k.PrimaryAccount(ctx, addr)
if err != nil {
return nil, ErrAppAccountNotFound(addr)
}
accounts = append(accounts, primaryAccount)
}
result, jsonErr := codec.MarshalJSONIndent(k.codec, accounts)
if jsonErr != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marshal result to JSON", jsonErr.Error()))
}
return result, nil
}
func queryParams(ctx sdk.Context, keeper Keeper) (result []byte, err sdk.Error) {
params := keeper.GetParams(ctx)
result, jsonErr := ModuleCodec.MarshalJSON(params)
if jsonErr != nil {
return nil, sdk.ErrInternal(sdk.AppendMsgToErr("could not marsal result to JSON", jsonErr.Error()))
}
return result, nil
}
func unmarshalQueryParams(request abci.RequestQuery, params interface{}) (sdkErr sdk.Error) {
err := ModuleCodec.UnmarshalJSON(request.Data, params)
if err != nil {
sdkErr = sdk.ErrUnknownRequest(fmt.Sprintf("Incorrectly formatted request data - %s", err.Error()))
return
}
return
}