343 lines
14 KiB
C#
343 lines
14 KiB
C#
using System.Collections.Concurrent;
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using System.Globalization;
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using System.IO;
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using System.Security.Cryptography;
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using System.Threading.Channels;
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using Microsoft.Extensions.Configuration;
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using Minio;
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using Minio.DataModel.Args;
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using Minio.DataModel.Notification;
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using Minio.Exceptions;
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using Newtonsoft.Json.Linq;
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using Polly;
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using Polly.Retry;
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namespace Hopetry.Services
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{
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public partial class MinioService
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{
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private IMinioClient _minioClient;
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public readonly string _bucketName = null;
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public MinioService()
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{
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var builder = new ConfigurationBuilder()
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.SetBasePath(Directory.GetCurrentDirectory())
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.AddJsonFile("global.json", optional: false, reloadOnChange: true);
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// 构建配置
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var config = builder.Build();
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var minioConfig = config.GetSection("Minio");
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_minioClient = new MinioClient()
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.WithEndpoint(minioConfig["Endpoint"])
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.WithCredentials(minioConfig["AccessKey"], minioConfig["SecretKey"]).Build();
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_bucketName = minioConfig["BucketName"]!;
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/*_minioClient = new MinioClient()
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.WithEndpoint("123.132.248.154:9107")
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.WithCredentials("oZNgo25pNXnKFV9oKGh4", "66GYn0x1XAEInSa9wdCutzvUWKfhH1EhqxPJ6a9u")
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.Build();*/
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EnsureBucketExistsAsync(_bucketName).Wait();
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}
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AsyncRetryPolicy policy = Policy
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.Handle<MinioException>()
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.WaitAndRetryAsync(3, retryAttempt =>
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TimeSpan.FromSeconds(Math.Pow(2, retryAttempt)),
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onRetry: (exception, delay, retryCount, context) =>
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{
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//日志
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// _logger.LogWarning($"Retry {retryCount} for {context.PolicyKey}: {exception.Message}");
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});
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// 使用 Channel 实现生产者-消费者模式
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private static readonly Channel<(string ObjectName, string ETag)> SyncChannel =
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Channel.CreateBounded<(string, string)>(new BoundedChannelOptions(10000)
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{
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SingleWriter = false,
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SingleReader = false,
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FullMode = BoundedChannelFullMode.Wait
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});
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public async Task ListObject(string bucketName)
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{
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var listArgs = new ListObjectsArgs()
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.WithBucket(bucketName)
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.WithVersions(true)
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.WithRecursive(true);
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try
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{
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var observable = _minioClient.ListObjectsEnumAsync(listArgs);
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//observable.ConfigureAwait(false);
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await foreach (var item in observable)
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{
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Console.WriteLine("==============");
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Console.WriteLine(item.Key);
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//Console.WriteLine(item.IsDir);
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Console.WriteLine(item.LastModified);
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Console.WriteLine(item.Size);
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Console.WriteLine(item.ETag);
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Console.WriteLine(item.VersionId);
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Console.WriteLine("==============");
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}
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}
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catch (Exception e)
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{
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Console.WriteLine(e);
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Console.WriteLine("我抛出的");
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}
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}
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/// <summary>
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/// 同步下载 todo 需要合并另外一个同步方法
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/// </summary>
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/// <param name="bucket"></param>
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/// <param name="localDir"></param>
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/// <param name="maxParallel"></param>
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public async Task MirrorAsync1(string bucket, string localDir, int maxParallel = 5)
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{
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var count = 0;
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var producerTasks = new List<Task>();
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var listArgs = new ListObjectsArgs()
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.WithBucket(bucket)
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.WithRecursive(true);
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// 预先生成本地文件索引（大幅减少 File.Exists 调用） 基于字典
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var localFileIndex = await BuildLocalFileIndex(localDir);
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//var x = policy.ExecuteAsync(() => Task.FromResult(_minioClient.ListObjectsEnumAsync(listArgs)));
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var observable = _minioClient.ListObjectsEnumAsync(listArgs);
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await foreach (var item in observable)
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{
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var index = item.Key.LastIndexOf("/", StringComparison.Ordinal);
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if (index > 0)
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{
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var dir = Path.Combine(localDir, item.Key.Substring(0, index));
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if (!Directory.Exists(dir))
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{
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Directory.CreateDirectory(dir);
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}
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}
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producerTasks.Add(Task.Run(async () =>
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{
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var localPath = Path.Combine(localDir, item.Key.Replace('/', Path.DirectorySeparatorChar));
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// 快速路径判断（存在性检查）
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if (!localFileIndex.TryGetValue(localPath, out var localMeta))
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{
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// 如果不存在，则加入下载队列
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await SyncChannel.Writer.WriteAsync((item.Key, item.ETag));
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}
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else
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{
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DateTime itemLastModified =
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DateTime.Parse(item.LastModified, null, DateTimeStyles.RoundtripKind);
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if ((ulong)localMeta.Size != item.Size || localMeta.LastModified < itemLastModified ||
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!VerifyETag(localPath, item.ETag))
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{
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await SyncChannel.Writer.WriteAsync((item.Key, item.ETag));
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}
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}
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}));
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}
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await Task.WhenAll(producerTasks);
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SyncChannel.Writer.Complete(); // 关键步骤！
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// 阶段2: 并行消费下载任务
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var consumerTask = Task.Run(async () =>
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{
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await Parallel.ForEachAsync(SyncChannel.Reader.ReadAllAsync(),
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new ParallelOptions { MaxDegreeOfParallelism = maxParallel },
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async (item, _) =>
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{
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count++;
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await DownLoadObject(bucket, item.ObjectName, localDir, item.ETag);
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}
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);
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});
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// 等待消费完成
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await consumerTask;
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Console.WriteLine($"{count}个文件下载完成");
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}
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/// <summary>
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/// 构建本地文件内存索引（路径 → 元数据）
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/// </summary>
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/// <param name="rootDir"></param>
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/// <returns></returns>
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private async Task<ConcurrentDictionary<string, (long Size, DateTime LastModified)>> BuildLocalFileIndex(
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string rootDir)
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{
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var index =
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new ConcurrentDictionary<string, (long Size, DateTime LastModified)>(StringComparer.OrdinalIgnoreCase);
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await Parallel.ForEachAsync(Directory.EnumerateFiles(rootDir, "*", SearchOption.AllDirectories),
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async (path, _) =>
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{
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var info = new FileInfo(path);
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index.TryAdd(path, (info.Length, info.LastWriteTimeUtc));
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});
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return index;
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}
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public async Task EnsureBucketExistsAsync(string bucketName)
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{
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var existsArgs = new BucketExistsArgs().WithBucket(bucketName);
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var x = await _minioClient.BucketExistsAsync(existsArgs);
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Console.WriteLine($" {bucketName} exist status: " + x);
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// 如果存储桶不存在，则创建存储桶
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if (!x)
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{
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var makeArgs = new MakeBucketArgs().WithBucket(bucketName);
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await _minioClient.MakeBucketAsync(makeArgs);
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}
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}
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/// <summary>
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/// 上伟文件
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/// </summary>
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/// <param name="fileRecord"></param>
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/*public async Task UploadFileAsync(FileRecord fileRecord)
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{
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var putArgs = new PutObjectArgs()
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.WithBucket(_bucketName)
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.WithObject(fileRecord.FileName)
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.WithFileName(fileRecord.LocalPath)
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// application/zip
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.WithContentType("application/octet-stream");
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await _minioClient.PutObjectAsync(putArgs);
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}*/
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/// <summary>
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/// 列出存储桶内所有文件
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/// </summary>
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/// <param name="bucket"></param>
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public async Task ListAllObject()
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{
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// Just list of objects
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// Check whether 'mybucket' exists or not.
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var existsArgs = new BucketExistsArgs().WithBucket(_bucketName);
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bool found = await _minioClient.BucketExistsAsync(existsArgs);
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if (found)
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{
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// List objects from 'my-bucketname'
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ListObjectsArgs args = new ListObjectsArgs()
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.WithBucket(_bucketName)
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.WithRecursive(false);
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// ListObjectsEnumAsync 新方法
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var observable = _minioClient.ListObjectsEnumAsync(args);
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var x = observable.GetAsyncEnumerator();
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await x.MoveNextAsync();
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Console.WriteLine(x.Current.Key);
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Console.WriteLine(x.Current.Size);
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Console.WriteLine(x.Current.ETag);
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Console.WriteLine(x.Current.LastModified);
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Console.WriteLine(x.Current.IsDir);
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/*IDisposable subscription = observable.Subscribe(
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item => Console.WriteLine("OnNext: {0}", item.Key),
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ex => Console.WriteLine("OnError: {0}", ex.Message),
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() => Console.WriteLine("OnComplete: {0}"));*/
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}
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else
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{
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Console.WriteLine("mybucket does not exist");
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}
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}
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// todo 下载
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public async Task DownLoadObject(string bucketName, string objectKey, string localDir, string objectETag)
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{
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var index = objectKey.LastIndexOf("/", StringComparison.Ordinal);
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if (index > 0)
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{
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var dir = Path.Combine(localDir, objectKey.Substring(0, index));
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if (!Directory.Exists(dir))
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{
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Directory.CreateDirectory(dir);
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}
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}
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var localPath = Path.Combine(localDir, objectKey.Replace('/', Path.DirectorySeparatorChar));
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var getArgs = new GetObjectArgs()
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.WithBucket(string.IsNullOrEmpty(bucketName) ? _bucketName : bucketName)
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.WithObject(objectKey)
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.WithFile(localPath);
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await _minioClient.GetObjectAsync(getArgs);
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if (VerifyETag(localPath, objectETag))
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{
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// todo 先忽略处理
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}
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Console.WriteLine($"{objectKey} Download complete");
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}
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// 差异检测：通过 ETag 和修改时间对比
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private async Task<bool> NeedSyncAsync(string bucket, string objectName, string localPath)
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{
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if (!File.Exists(localPath)) return true;
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var remoteMeta = await GetObjectMetadata(bucket, objectName);
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var localInfo = new FileInfo(localPath);
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return localInfo.Length != remoteMeta.Size ||
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localInfo.LastWriteTimeUtc < remoteMeta.LastModified ||
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!VerifyETag(localPath, remoteMeta.ETag);
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}
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// 获取远程对象元数据
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public async Task<(long Size, DateTime LastModified, string ETag)> GetObjectMetadata(string bucket,
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string objectName)
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{
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var args = new StatObjectArgs().WithBucket(bucket).WithObject(objectName);
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var stat = await _minioClient.StatObjectAsync(args);
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return (stat.Size, stat.LastModified, stat.ETag);
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}
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// 校验本地文件 ETag（MinIO 使用 MD5）
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public bool VerifyETag(string filePath, string remoteETag)
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{
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using var md5 = MD5.Create();
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using var stream = File.OpenRead(filePath);
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var localHash = BitConverter.ToString(md5.ComputeHash(stream)).Replace("-", "").ToLower();
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return remoteETag.Trim('"').Equals(localHash, StringComparison.OrdinalIgnoreCase);
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}
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// 实时监听方法
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public async Task RealTimeListen(string bucketName, string localDir, string prefix = "", string suffix = "")
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{
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try
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{
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var events = new List<EventType> { EventType.ObjectCreatedAll };
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ListenBucketNotificationsArgs args = new ListenBucketNotificationsArgs()
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.WithBucket(bucketName)
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.WithEvents(events);
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IObservable<MinioNotificationRaw> observable = _minioClient.ListenBucketNotificationsAsync(args);
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IDisposable subscription = observable.Subscribe(
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async notification =>
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{
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Console.WriteLine($"Received notification: {notification.Json}");
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var obj = JObject.Parse(notification.Json);
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// s3:ObjectCreated:Put
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var eventType = obj["Records"]?[0]?["eventName"]?.Value<string>();
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var objectSize = obj["Records"]?[0]?["s3"]?["object"]?["size"]?.Value<long>();
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var objectKey = obj["Records"]?[0]?["s3"]?["object"]?["key"]?.Value<string>();
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var objectETag = obj["Records"]?[0]?["s3"]?["object"]?["eTag"]?.Value<string>();
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await DownLoadObject(bucketName, objectKey, localDir, objectETag);
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},
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ex => Console.WriteLine($"OnError: {ex}"),
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() => Console.WriteLine($"Stopped listening for bucket notifications\n"));
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}
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catch (MinioException e)
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{
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Console.WriteLine("Error occurred: " + e);
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}
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}
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}
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} |