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query.go
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query.go
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package rest
import (
"fmt"
"net/http"
"github.com/gorilla/mux"
"github.com/cosmos/cosmos-sdk/client/context"
"github.com/cosmos/cosmos-sdk/types/rest"
"github.com/tuckermint/sdk-application-tutorial/x/minisupply/internal/types"
)
// RegisterRoutes registers staking-related REST handlers to a router
func RegisterRoutes(cliCtx context.CLIContext, r *mux.Router) {
registerQueryRoutes(cliCtx, r)
}
func registerQueryRoutes(cliCtx context.CLIContext, r *mux.Router) {
// Query the total supply of coins
r.HandleFunc(
"/minisupply/total",
totalSupplyHandlerFn(cliCtx),
).Methods("GET")
// Query the supply of a single denom
r.HandleFunc(
"/minisupply/total/{denom}",
supplyOfHandlerFn(cliCtx),
).Methods("GET")
}
// HTTP request handler to query the total supply of coins
func totalSupplyHandlerFn(cliCtx context.CLIContext) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
_, page, limit, err := rest.ParseHTTPArgsWithLimit(r, 0)
if err != nil {
rest.WriteErrorResponse(w, http.StatusBadRequest, err.Error())
return
}
cliCtx, ok := rest.ParseQueryHeightOrReturnBadRequest(w, cliCtx, r)
if !ok {
return
}
params := types.NewQueryTotalSupplyParams(page, limit)
bz, err := cliCtx.Codec.MarshalJSON(params)
if err != nil {
rest.WriteErrorResponse(w, http.StatusBadRequest, err.Error())
return
}
res, height, err := cliCtx.QueryWithData(fmt.Sprintf("custom/%s/%s", types.QuerierRoute, types.QueryTotalSupply), bz)
if err != nil {
rest.WriteErrorResponse(w, http.StatusInternalServerError, err.Error())
return
}
cliCtx = cliCtx.WithHeight(height)
rest.PostProcessResponse(w, cliCtx, res)
}
}
// HTTP request handler to query the supply of a single denom
func supplyOfHandlerFn(cliCtx context.CLIContext) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
denom := mux.Vars(r)["denom"]
cliCtx, ok := rest.ParseQueryHeightOrReturnBadRequest(w, cliCtx, r)
if !ok {
return
}
params := types.NewQuerySupplyOfParams(denom)
bz, err := cliCtx.Codec.MarshalJSON(params)
if err != nil {
rest.WriteErrorResponse(w, http.StatusBadRequest, err.Error())
return
}
res, height, err := cliCtx.QueryWithData(fmt.Sprintf("custom/%s/%s", types.QuerierRoute, types.QuerySupplyOf), bz)
if err != nil {
rest.WriteErrorResponse(w, http.StatusInternalServerError, err.Error())
return
}
cliCtx = cliCtx.WithHeight(height)
rest.PostProcessResponse(w, cliCtx, res)
}
}