78 lines
2.0 KiB
Go
78 lines
2.0 KiB
Go
package rest
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import (
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"encoding/hex"
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"fmt"
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"net/http"
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"github.com/gorilla/mux"
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"github.com/tendermint/go-crypto/keys"
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"github.com/cosmos/cosmos-sdk/client/context"
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/cosmos/cosmos-sdk/wire"
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"github.com/cosmos/cosmos-sdk/x/stake"
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)
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func registerQueryRoutes(ctx context.CoreContext, r *mux.Router, cdc *wire.Codec, kb keys.Keybase) {
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r.HandleFunc("/stake/{delegator}/bonding_status/{candidate}", bondingStatusHandlerFn("stake", cdc, kb, ctx)).Methods("GET")
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}
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// BondingStatusHandlerFn - http request handler to query delegator bonding status
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func bondingStatusHandlerFn(storeName string, cdc *wire.Codec, kb keys.Keybase, ctx context.CoreContext) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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// read parameters
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vars := mux.Vars(r)
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delegator := vars["delegator"]
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candidate := vars["candidate"]
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bz, err := hex.DecodeString(delegator)
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if err != nil {
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w.WriteHeader(http.StatusBadRequest)
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w.Write([]byte(err.Error()))
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return
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}
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delegatorAddr := sdk.Address(bz)
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bz, err = hex.DecodeString(candidate)
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if err != nil {
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w.WriteHeader(http.StatusBadRequest)
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w.Write([]byte(err.Error()))
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return
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}
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validatorAddr := sdk.Address(bz)
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key := stake.GetDelegationKey(delegatorAddr, validatorAddr, cdc)
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res, err := ctx.Query(key, storeName)
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if err != nil {
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w.WriteHeader(http.StatusInternalServerError)
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w.Write([]byte(fmt.Sprintf("Couldn't query bond. Error: %s", err.Error())))
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return
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}
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// the query will return empty if there is no data for this bond
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if len(res) == 0 {
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w.WriteHeader(http.StatusNoContent)
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return
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}
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var bond stake.Delegation
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err = cdc.UnmarshalBinary(res, &bond)
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if err != nil {
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w.WriteHeader(http.StatusInternalServerError)
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w.Write([]byte(fmt.Sprintf("Couldn't decode bond. Error: %s", err.Error())))
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return
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}
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output, err := cdc.MarshalJSON(bond)
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if err != nil {
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w.WriteHeader(http.StatusInternalServerError)
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w.Write([]byte(err.Error()))
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return
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}
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w.Write(output)
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}
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}
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