/
registryimplementerget.go
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/
registryimplementerget.go
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// Copyright © 2019 Weald Technology Trading
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package cmd
import (
"fmt"
"os"
"github.com/spf13/cobra"
"github.com/engram-network/gramreal/v2/cli"
ens "github.com/wealdtech/go-ens/v3"
erc1820 "github.com/wealdtech/go-erc1820"
)
// registryImplementerGetCmd represents the registry implementer get command.
var registryImplementerGetCmd = &cobra.Command{
Use: "get",
Short: "Obtain the address of an ERC-1820 interface implementer",
Long: `Obtain the address of an implementer registered with the ERC-1820 registry for a given interface. For example:
gramreal registry implementer get --interface=ERC777Token --address=0x1234...5678
In quiet mode this will return 0 if the implementer has an address, otherwise 1.`,
Run: func(cmd *cobra.Command, args []string) {
cli.Assert(registryImplementerInterface != "", quiet, "--interface is required")
address, err := c.Resolve(registryImplementerAddressStr)
cli.ErrCheck(err, quiet, "failed to resolve name")
registry, err := erc1820.NewRegistry(c.Client())
cli.ErrCheck(err, quiet, "failed to obtain ERC-1820 registry")
implementer, err := registry.InterfaceImplementer(registryImplementerInterface, &address)
cli.ErrCheck(err, quiet, "failed to obtain implementer")
if *implementer == ens.UnknownAddress {
os.Exit(exitFailure)
}
if !quiet {
fmt.Printf("%s\n", ens.Format(c.Client(), *implementer))
}
os.Exit(exitSuccess)
},
}
func init() {
registryImplementerFlags(registryImplementerGetCmd)
registryImplementerCmd.AddCommand(registryImplementerGetCmd)
}