69 lines
1.8 KiB
Go
69 lines
1.8 KiB
Go
package keeper
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import (
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"fmt"
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abci "github.com/tendermint/tendermint/abci/types"
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"github.com/cosmos/cosmos-sdk/client"
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/cosmos/cosmos-sdk/x/supply/internal/types"
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)
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// NewQuerier creates a querier for supply REST endpoints
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func NewQuerier(k Keeper) sdk.Querier {
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return func(ctx sdk.Context, path []string, req abci.RequestQuery) (res []byte, err sdk.Error) {
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switch path[0] {
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case types.QueryTotalSupply:
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return queryTotalSupply(ctx, req, k)
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case types.QuerySupplyOf:
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return querySupplyOf(ctx, req, k)
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default:
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return nil, sdk.ErrUnknownRequest("unknown supply query endpoint")
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}
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}
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}
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func queryTotalSupply(ctx sdk.Context, req abci.RequestQuery, k Keeper) ([]byte, sdk.Error) {
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var params types.QueryTotalSupplyParams
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err := types.ModuleCdc.UnmarshalJSON(req.Data, ¶ms)
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if err != nil {
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return nil, sdk.ErrInternal(fmt.Sprintf("failed to parse params: %s", err))
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}
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totalSupply := k.GetSupply(ctx).Total
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start, end := client.Paginate(len(totalSupply), params.Page, params.Limit, 100)
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if start < 0 || end < 0 {
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totalSupply = sdk.Coins{}
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} else {
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totalSupply = totalSupply[start:end]
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}
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res, err := totalSupply.MarshalJSON()
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if err != nil {
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return nil, sdk.ErrInternal(sdk.AppendMsgToErr("failed to JSON marshal result: %s", err.Error()))
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}
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return res, nil
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}
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func querySupplyOf(ctx sdk.Context, req abci.RequestQuery, k Keeper) ([]byte, sdk.Error) {
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var params types.QuerySupplyOfParams
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err := types.ModuleCdc.UnmarshalJSON(req.Data, ¶ms)
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if err != nil {
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return nil, sdk.ErrInternal(fmt.Sprintf("failed to parse params: %s", err))
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}
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supply := k.GetSupply(ctx).Total.AmountOf(params.Denom)
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res, err := supply.MarshalJSON()
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if err != nil {
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return nil, sdk.ErrInternal(sdk.AppendMsgToErr("failed to JSON marshal result: %s", err.Error()))
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}
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return res, nil
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}
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