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GetContractABI gRPC Method

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Updated on
May 13, 2025

GetContractABI gRPC Method

Parameters

contractAddress
string
REQUIRED
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Returns

entrys
array
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anonymous
boolean
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constant
boolean
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name
string
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inputs
array
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indexed
boolean
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name
string
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type
string
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outputs
array
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indexed
boolean
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name
string
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type
string
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type
string
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payable
boolean
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stateMutability
string
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Request
1
package main
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import (
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	"context"
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	"crypto/tls"
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	"encoding/json"
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	"fmt"
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	"github.com/fbsobreira/gotron-sdk/pkg/client"
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	"google.golang.org/grpc"
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	"google.golang.org/grpc/credentials"
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	"log"
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)
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// Quicknode endpoints consist of two crucial components: the endpoint name and the corresponding token
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// For eg: QN Endpoint: https://docs-demo.tron-mainnet.quiknode.pro/abcde123456789
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// endpoint will be: docs-demo.tron-mainnet.quiknode.pro:50051  {50051 is the port number for Tron gRPC}
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// token will be : abcde123456789
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var token = "YOUR_TOKEN"
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var endpoint = "YOUR_ENDPOINT:50051"
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type auth struct {
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	token string
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}
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func (a *auth) GetRequestMetadata(ctx context.Context, uri ...string) (map[string]string, error) {
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	return map[string]string{
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		"x-token": a.token,
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	}, nil
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}
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func (a *auth) RequireTransportSecurity() bool {
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	return false
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}
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func main() {
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	opts := []grpc.DialOption{
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		grpc.WithTransportCredentials(credentials.NewTLS(&tls.Config{})),
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		grpc.WithPerRPCCredentials(&auth{token}),
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	}
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	conn := client.NewGrpcClient(endpoint)
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	if err := conn.Start(opts...); err != nil {
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		panic(err)
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	}
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	defer conn.Conn.Close()
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	contractAddress := "TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t"
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	fmt.Printf("Fetching ABI for contract: %s\n", contractAddress)
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	contractABI, err := conn.GetContractABI(contractAddress)
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	if err != nil {
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		log.Fatalf("Error getting contract ABI: %v\n", err)
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	}
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	fmt.Println("\nContract ABI Information:")
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	abiJSON, err := json.MarshalIndent(contractABI, "", "  ")
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	if err != nil {
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		log.Printf("Error marshaling ABI to JSON: %v\n", err)
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	} else {
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		fmt.Println(string(abiJSON))
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	}
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	if contractABI.Entrys != nil && len(contractABI.Entrys) > 0 {
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		fmt.Printf("\nContract has %d function entries\n", len(contractABI.Entrys))
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		maxFunctions := 5
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		if len(contractABI.Entrys) < maxFunctions {
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			maxFunctions = len(contractABI.Entrys)
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		}
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		fmt.Println("\nFunction Overview:")
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		for i := 0; i < maxFunctions; i++ {
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			entry := contractABI.Entrys[i]
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			fmt.Printf("%d. Name: %s, Type: %s\n", i+1, entry.Name, entry.Type)
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			if len(entry.Inputs) > 0 {
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				fmt.Print("   Parameters: ")
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				for j, input := range entry.Inputs {
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					fmt.Printf("%s (%s)", input.Name, input.Type)
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					if j < len(entry.Inputs)-1 {
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						fmt.Print(", ")
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					}
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				}
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				fmt.Println()
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			}
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			if len(entry.Outputs) > 0 {
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				fmt.Print("   Returns: ")
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				for j, output := range entry.Outputs {
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					fmt.Printf("%s (%s)", output.Name, output.Type)
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					if j < len(entry.Outputs)-1 {
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						fmt.Print(", ")
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					}
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				}
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				fmt.Println()
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			}
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		}
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		if len(contractABI.Entrys) > maxFunctions {
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			fmt.Printf("\n... and %d more functions\n", len(contractABI.Entrys)-maxFunctions)
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		}
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	} else {
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		fmt.Println("No function entries found in this contract's ABI.")
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	}
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}
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