111 lines
3.1 KiB
Go
111 lines
3.1 KiB
Go
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// Copyright (c) 2014-2017 The btcsuite developers
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// Copyright (c) 2019-2020 The Namecoin developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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package main
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import (
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"encoding/json"
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"log"
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"github.com/btcsuite/btcd/btcjson"
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"github.com/btcsuite/btcd/rpcclient"
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)
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// NameShowCmd defines the name_show JSON-RPC command.
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type NameShowCmd struct {
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Name string
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}
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// NameShowResult models the data from the name_show command.
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type NameShowResult struct {
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Name string `json:"name"`
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NameEncoding string `json:"name_encoding"`
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NameError string `json:"name_error"`
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Value string `json:"value"`
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ValueEncoding string `json:"value_encoding"`
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ValueError string `json:"value_error"`
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TxID string `json:"txid"`
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Vout uint32 `json:"vout"`
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Address string `json:"address"`
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IsMine bool `json:"ismine"`
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Height int32 `json:"height"`
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ExpiresIn int32 `json:"expires_in"`
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Expired bool `json:"expired"`
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}
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// FutureNameShowResult is a future promise to deliver the result
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// of a NameShowAsync RPC invocation (or an applicable error).
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type FutureNameShowResult chan *rpcclient.Response
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// Receive waits for the Response promised by the future and returns detailed
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// information about a name.
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func (r FutureNameShowResult) Receive() (*NameShowResult, error) {
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res, err := rpcclient.ReceiveFuture(r)
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if err != nil {
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return nil, err
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}
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// Unmarshal result as a name_show result object
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var nameShow NameShowResult
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err = json.Unmarshal(res, &nameShow)
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if err != nil {
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return nil, err
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}
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return &nameShow, nil
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}
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// NameShowAsync returns an instance of a type that can be used to get the
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// result of the RPC at some future time by invoking the Receive function on
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// the returned instance.
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//
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// See NameShow for the blocking version and more details.
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func NameShowAsync(c *rpcclient.Client, name string) FutureNameShowResult {
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cmd := &NameShowCmd{
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Name: name,
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}
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return c.SendCmd(cmd)
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}
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// NameShow returns detailed information about a name.
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func NameShow(c *rpcclient.Client, name string) (*NameShowResult, error) {
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return NameShowAsync(c, name).Receive()
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}
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func init() {
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// No special flags for commands in this file.
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flags := btcjson.UsageFlag(0)
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btcjson.MustRegisterCmd("name_show", (*NameShowCmd)(nil), flags)
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}
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func main() {
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// Connect to local namecoin core RPC server using HTTP POST mode.
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connCfg := &rpcclient.ConnConfig{
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Host: "localhost:8336",
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User: "yourrpcuser",
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Pass: "yourrpcpass",
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HTTPPostMode: true, // Namecoin core only supports HTTP POST mode
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DisableTLS: true, // Namecoin core does not provide TLS by default
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}
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// Notice the notification parameter is nil since notifications are
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// not supported in HTTP POST mode.
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client, err := rpcclient.New(connCfg, nil)
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if err != nil {
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log.Fatal(err)
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}
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defer client.Shutdown()
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// Get the current block count.
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result, err := NameShow(client, "d/namecoin")
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if err != nil {
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log.Fatal(err)
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}
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value := result.Value
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log.Printf("Value of d/namecoin: %s", value)
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}
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