/
main.go
110 lines (93 loc) · 3.05 KB
/
main.go
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// Copyright (c) 2014-2017 The btcsuite developers
// Copyright (c) 2019-2020 The Namecoin developers
// Use of this source code is governed by an ISC
// license that can be found in the LICENSE file.
package main
import (
"encoding/json"
"log"
"github.com/btcsuite/btcd/btcjson"
"github.com/btcsuite/btcd/rpcclient"
)
// NameShowCmd defines the name_show JSON-RPC command.
type NameShowCmd struct {
Name string
}
// NameShowResult models the data from the name_show command.
type NameShowResult struct {
Name string `json:"name"`
NameEncoding string `json:"name_encoding"`
NameError string `json:"name_error"`
Value string `json:"value"`
ValueEncoding string `json:"value_encoding"`
ValueError string `json:"value_error"`
TxID string `json:"txid"`
Vout uint32 `json:"vout"`
Address string `json:"address"`
IsMine bool `json:"ismine"`
Height int32 `json:"height"`
ExpiresIn int32 `json:"expires_in"`
Expired bool `json:"expired"`
}
// FutureNameShowResult is a future promise to deliver the result
// of a NameShowAsync RPC invocation (or an applicable error).
type FutureNameShowResult chan *rpcclient.Response
// Receive waits for the Response promised by the future and returns detailed
// information about a name.
func (r FutureNameShowResult) Receive() (*NameShowResult, error) {
res, err := rpcclient.ReceiveFuture(r)
if err != nil {
return nil, err
}
// Unmarshal result as a name_show result object
var nameShow NameShowResult
err = json.Unmarshal(res, &nameShow)
if err != nil {
return nil, err
}
return &nameShow, nil
}
// NameShowAsync returns an instance of a type that can be used to get the
// result of the RPC at some future time by invoking the Receive function on
// the returned instance.
//
// See NameShow for the blocking version and more details.
func NameShowAsync(c *rpcclient.Client, name string) FutureNameShowResult {
cmd := &NameShowCmd{
Name: name,
}
return c.SendCmd(cmd)
}
// NameShow returns detailed information about a name.
func NameShow(c *rpcclient.Client, name string) (*NameShowResult, error) {
return NameShowAsync(c, name).Receive()
}
func init() {
// No special flags for commands in this file.
flags := btcjson.UsageFlag(0)
btcjson.MustRegisterCmd("name_show", (*NameShowCmd)(nil), flags)
}
func main() {
// Connect to local namecoin core RPC server using HTTP POST mode.
connCfg := &rpcclient.ConnConfig{
Host: "localhost:8336",
User: "yourrpcuser",
Pass: "yourrpcpass",
HTTPPostMode: true, // Namecoin core only supports HTTP POST mode
DisableTLS: true, // Namecoin core does not provide TLS by default
}
// Notice the notification parameter is nil since notifications are
// not supported in HTTP POST mode.
client, err := rpcclient.New(connCfg, nil)
if err != nil {
log.Fatal(err)
}
defer client.Shutdown()
// Get the current block count.
result, err := NameShow(client, "d/namecoin")
if err != nil {
log.Fatal(err)
}
value := result.Value
log.Printf("Value of d/namecoin: %s", value)
}