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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"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/cosmos/cosmos-sdk/wire"
"github.com/cosmos/cosmos-sdk/x/auth"
authcmd "github.com/cosmos/cosmos-sdk/x/auth/client/cli"
)
// register REST routes
func RegisterRoutes(ctx context.CoreContext, r *mux.Router, cdc *wire.Codec, storeName string) {
r.HandleFunc(
"/accounts/{address}",
QueryAccountRequestHandlerFn(storeName, cdc, authcmd.GetAccountDecoder(cdc), ctx),
).Methods("GET")
}
// query accountREST Handler
func QueryAccountRequestHandlerFn(storeName string, cdc *wire.Codec, decoder auth.AccountDecoder, ctx context.CoreContext) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
bech32addr := vars["address"]
addr, err := sdk.AccAddressFromBech32(bech32addr)
if err != nil {
w.WriteHeader(http.StatusBadRequest)
w.Write([]byte(err.Error()))
return
}
res, err := ctx.QueryStore(auth.AddressStoreKey(addr), storeName)
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
w.Write([]byte(fmt.Sprintf("couldn't query account. Error: %s", err.Error())))
return
}
// the query will return empty if there is no data for this account
if len(res) == 0 {
w.WriteHeader(http.StatusNoContent)
return
}
// decode the value
account, err := decoder(res)
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
w.Write([]byte(fmt.Sprintf("couldn't parse query result. Result: %s. Error: %s", res, err.Error())))
return
}
// print out whole account
output, err := cdc.MarshalJSON(account)
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
w.Write([]byte(fmt.Sprintf("couldn't marshall query result. Error: %s", err.Error())))
return
}
w.Write(output)
}
}