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Menghubungkan ke database Amazon Neptune menggunakan otentikasi IAM dengan Gremlin.NET

Gambaran umum

Panduan ini menunjukkan cara menyambung ke database Amazon Neptune dengan otentikasi IAM diaktifkan menggunakan driver Gremlin .NET, dengan otentikasi Signature Version 4 dan AWS SDK untuk.NET v3.

Buat koneksi dasar

Untuk terhubung dengan Gremlin.NET, gunakan file SigV4RequestSigner sumber dari pustaka kustom. https://github.com/aws/amazon-neptune-gremlin-dotnet-sigv4 Contoh pengaturan proyek terletak di https://github.com/aws/amazon-neptune-gremlin-dotnet-sigv4/tree/main/example, dan tercermin di bawah ini.

Berkas Proyek:

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>netcoreapp8.0</TargetFramework>
  </PropertyGroup>

  <ItemGroup>
    <Compile Include="../src/SigV4RequestSigner.cs" Link="SigV4RequestSigner.cs" />
    <PackageReference Include="AWSSDK.Core" Version="3.7.402.24" />
    <PackageReference Include="gremlin.net" Version="3.7.3" />
  </ItemGroup>

</Project>

Contoh Program:

using System;
using System.Collections.Generic;
using System.Net.WebSockets;
using System.Linq;
using System.Net.Http;
using System.Security.Cryptography;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Web;
using Gremlin.Net;
using Gremlin.Net.Driver;
using Gremlin.Net.Driver.Remote;
using Gremlin.Net.Process;
using Gremlin.Net.Process.Traversal;
using Gremlin.Net.Structure;
using static Gremlin.Net.Process.Traversal.AnonymousTraversalSource;
using static Gremlin.Net.Process.Traversal.__;
using static Gremlin.Net.Process.Traversal.P;
using static Gremlin.Net.Process.Traversal.Order;
using static Gremlin.Net.Process.Traversal.Operator;
using static Gremlin.Net.Process.Traversal.Pop;
using static Gremlin.Net.Process.Traversal.Scope;
using static Gremlin.Net.Process.Traversal.TextP;
using static Gremlin.Net.Process.Traversal.Column;
using static Gremlin.Net.Process.Traversal.Direction;
using static Gremlin.Net.Process.Traversal.T;
using Amazon.Runtime.CredentialManagement;
using Amazon.Runtime;
using Amazon;
using Amazon.Util;
using Amazon.Neptune.Gremlin.Driver;

namespace NeptuneExample
{
    class Program
    {
        static void Main(string[] args)
        {
            /*
                Include your Neptune endpoint and port below.
            */
            var neptune_host = "neptune-endpoint"; // ex: mycluster.cluster.us-east-1.neptune.amazonaws.com
            var neptune_port = 8182;

            var gremlinServer = new GremlinServer(neptune_host, neptune_port);
            var gremlinClient = new GremlinClient(gremlinServer, webSocketConfiguration: new SigV4RequestSigner().signRequest(neptune_host, neptune_port));
            var remoteConnection = new DriverRemoteConnection(gremlinClient);
            var g = Traversal().WithRemote(remoteConnection);

            /* Example code to pull the first 5 vertices in a graph. */
            Console.WriteLine("Get List of Node Labels:");
            Int32 limitValue = 5;
            var output = g.V().Limit<Vertex>(limitValue).ToList();
            foreach(var item in output) {
                Console.WriteLine(item);
            }
        }
    }
}