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ethrpc.go
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ethrpc.go
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/*
Package ethrpc implements RPC methods to interact with the ethreum node geth.
*/
package ethrpc
import (
"errors"
jsonrpc "github.com/KeisukeYamashita/go-jsonrpc"
)
/*
RPCClient ...
*/
type RPCClient struct {
*jsonrpc.RPCClient
}
/*
RPCer ...
Interface for other jsonrpc.
*/
type RPCer interface {
GetBlockNumber() (string, error)
}
/*
NewRPCClient ...
NewRPCClient creates JSONRPC clients for your bitcoin node.
*/
func NewRPCClient(endpoint string) *RPCClient {
c := new(RPCClient)
c.RPCClient = jsonrpc.NewRPCClient(endpoint)
return c
}
/*
GetBlockNumber ...
GetBlockNumber gets the most resent block height
*/
func (c *RPCClient) GetBlockNumber() (string, error) {
resp, err := c.RPCClient.Call("eth_blockNumber")
if err != nil {
return "", err
}
if resp.Error != nil {
return "", errors.New(resp.Error.Message)
}
var heightHex string
resp.GetObject(&heightHex)
return heightHex, nil
}
/*
GetBalance ...
GetBalance gets the balance of eth with the given address
*/
func (c *RPCClient) GetBalance(addr string) (string, error) {
resp, err := c.RPCClient.Call("eth_getBalance", addr)
if err != nil {
return "", err
}
if resp.Error != nil {
return "", errors.New(resp.Error.Message)
}
var balance string
resp.GetObject(&balance)
return balance, nil
}