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BaseStorage.cs
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using System;
using System.Collections.Generic;
using System.Diagnostics.Contracts;
using System.IO;
using System.Text.Json;
using System.Threading;
using System.Threading.Tasks;
using ManagedCode.Communication;
using ManagedCode.MimeTypes;
using ManagedCode.Storage.Core.Models;
namespace ManagedCode.Storage.Core;
public abstract class BaseStorage<T, TOptions> : IStorage<T, TOptions> where TOptions : IStorageOptions
{
protected bool IsContainerCreated;
protected TOptions StorageOptions;
private readonly SemaphoreSlim _semaphoreSlim = new(1, 1);
protected BaseStorage(TOptions storageOptions)
{
Contract.Assert(storageOptions is not null);
StorageOptions = storageOptions;
// ReSharper disable once VirtualMemberCallInConstructor
StorageClient = CreateStorageClient();
}
public async Task<Result> CreateContainerAsync(CancellationToken cancellationToken = default)
{
try
{
await _semaphoreSlim.WaitAsync(cancellationToken);
cancellationToken.ThrowIfCancellationRequested();
var result = await CreateContainerInternalAsync(cancellationToken);
cancellationToken.ThrowIfCancellationRequested();
IsContainerCreated = result.IsSuccess;
return result;
}
catch (Exception ex)
{
return Result.Fail(ex);
}
finally
{
_semaphoreSlim.Release();
}
}
public abstract Task<Result> RemoveContainerAsync(CancellationToken cancellationToken = default);
public async Task<Result> DeleteDirectoryAsync(string directory, CancellationToken cancellationToken = default)
{
return await DeleteDirectoryInternalAsync(directory, cancellationToken);
}
public Task<Result<BlobMetadata>> UploadAsync(Stream content, CancellationToken cancellationToken = default)
{
return UploadAsync(content, new UploadOptions(), cancellationToken);
}
public Task<Result<BlobMetadata>> UploadAsync(byte[] data, CancellationToken cancellationToken = default)
{
return UploadAsync(data, new UploadOptions(), cancellationToken);
}
public Task<Result<BlobMetadata>> UploadAsync(string content, CancellationToken cancellationToken = default)
{
return UploadAsync(content, new UploadOptions(), cancellationToken);
}
public Task<Result<BlobMetadata>> UploadAsync(FileInfo fileInfo, CancellationToken cancellationToken = default)
{
return UploadAsync(fileInfo, new UploadOptions(), cancellationToken);
}
public Task<Result<BlobMetadata>> UploadAsync(Stream stream, Action<UploadOptions> action, CancellationToken cancellationToken = default)
{
var options = new UploadOptions();
action.Invoke(options);
return UploadAsync(stream, options, cancellationToken);
}
public Task<Result<BlobMetadata>> UploadAsync(byte[] data, Action<UploadOptions> action, CancellationToken cancellationToken = default)
{
var options = new UploadOptions();
action.Invoke(options);
return UploadAsync(data, options, cancellationToken);
}
public Task<Result<BlobMetadata>> UploadAsync(string content, Action<UploadOptions> action, CancellationToken cancellationToken = default)
{
var options = new UploadOptions();
action.Invoke(options);
return UploadAsync(content, options, cancellationToken);
}
public Task<Result<BlobMetadata>> UploadAsync(FileInfo fileInfo, Action<UploadOptions> action, CancellationToken cancellationToken = default)
{
var options = new UploadOptions();
action.Invoke(options);
return UploadAsync(fileInfo, options, cancellationToken);
}
public Task<Result<BlobMetadata>> UploadAsync(Stream stream, UploadOptions options, CancellationToken cancellationToken = default)
{
if (string.IsNullOrWhiteSpace(options.MimeType))
options.MimeType = MimeHelper.GetMimeType(options.FileName);
return UploadInternalAsync(stream, SetUploadOptions(options), cancellationToken);
}
public async Task<Result<BlobMetadata>> UploadAsync(byte[] data, UploadOptions options, CancellationToken cancellationToken = default)
{
if (string.IsNullOrWhiteSpace(options.MimeType))
options.MimeType = MimeHelper.GetMimeType(options.FileName);
using var stream = new MemoryStream(data, writable: false);
return await UploadInternalAsync(stream, SetUploadOptions(options), cancellationToken);
}
public async Task<Result<BlobMetadata>> UploadAsync(string content, UploadOptions options, CancellationToken cancellationToken = default)
{
if (string.IsNullOrWhiteSpace(options.MimeType))
options.MimeType = MimeHelper.TEXT;
using var stream = new Utf8StringStream(content);
return await UploadInternalAsync(stream, SetUploadOptions(options), cancellationToken);
}
public async Task<Result<BlobMetadata>> UploadAsync(FileInfo fileInfo, UploadOptions options, CancellationToken cancellationToken = default)
{
if (string.IsNullOrWhiteSpace(options.MimeType))
options.MimeType = MimeHelper.GetMimeType(fileInfo.Extension);
if (string.IsNullOrEmpty(options.FileName))
{
options.FileName = fileInfo.Name;
}
using var stream = fileInfo.OpenRead();
return await UploadInternalAsync(stream, SetUploadOptions(options), cancellationToken);
}
public Task<Result<LocalFile>> DownloadAsync(string fileName, CancellationToken cancellationToken = default)
{
var file = new LocalFile();
DownloadOptions options = new() { FileName = fileName };
return DownloadInternalAsync(file, options, cancellationToken);
}
public Task<Result<LocalFile>> DownloadAsync(BlobMetadata metadata, CancellationToken cancellationToken = default)
{
var file = new LocalFile();
DownloadOptions options = new() { FileName = metadata.FullName };
return DownloadInternalAsync(file, options, cancellationToken);
}
public Task<Result<LocalFile>> DownloadAsync(DownloadOptions options, CancellationToken cancellationToken = default)
{
var keepAlive = options.LocalPath is not null;
LocalFile file = new(options.LocalPath, keepAlive);
return DownloadInternalAsync(file, options, cancellationToken);
}
public Task<Result<LocalFile>> DownloadAsync(Action<DownloadOptions> action, CancellationToken cancellationToken = default)
{
DownloadOptions options = new();
action.Invoke(options);
var keepAlive = options.LocalPath is not null;
LocalFile file = new(options.LocalPath, keepAlive);
return DownloadInternalAsync(file, options, cancellationToken);
}
public Task<Result<bool>> DeleteAsync(string fileName, CancellationToken cancellationToken = default)
{
DeleteOptions options = new() { FileName = fileName };
return DeleteInternalAsync(options, cancellationToken);
}
public Task<Result<bool>> DeleteAsync(DeleteOptions options, CancellationToken cancellationToken = default)
{
return DeleteInternalAsync(options, cancellationToken);
}
public Task<Result<bool>> DeleteAsync(Action<DeleteOptions> action, CancellationToken cancellationToken = default)
{
DeleteOptions options = new();
action.Invoke(options);
return DeleteInternalAsync(options, cancellationToken);
}
public Task<Result<bool>> ExistsAsync(string fileName, CancellationToken cancellationToken = default)
{
ExistOptions options = new() { FileName = fileName };
return ExistsInternalAsync(options, cancellationToken);
}
public Task<Result<bool>> ExistsAsync(ExistOptions options, CancellationToken cancellationToken = default)
{
return ExistsInternalAsync(options, cancellationToken);
}
public Task<Result<bool>> ExistsAsync(Action<ExistOptions> action, CancellationToken cancellationToken = default)
{
ExistOptions options = new();
action.Invoke(options);
return ExistsInternalAsync(options, cancellationToken);
}
public Task<Result<BlobMetadata>> GetBlobMetadataAsync(string fileName, CancellationToken cancellationToken = default)
{
MetadataOptions options = new() { FileName = fileName };
return GetBlobMetadataInternalAsync(options, cancellationToken);
}
public Task<Result<BlobMetadata>> GetBlobMetadataAsync(MetadataOptions options, CancellationToken cancellationToken = default)
{
return GetBlobMetadataInternalAsync(options, cancellationToken);
}
public Task<Result<BlobMetadata>> GetBlobMetadataAsync(Action<MetadataOptions> action, CancellationToken cancellationToken = default)
{
MetadataOptions options = new();
action.Invoke(options);
return GetBlobMetadataInternalAsync(options, cancellationToken);
}
public abstract IAsyncEnumerable<BlobMetadata> GetBlobMetadataListAsync(string? directory = null, CancellationToken cancellationToken = default);
public Task<Result> SetLegalHoldAsync(bool hasLegalHold, string fileName, CancellationToken cancellationToken = default)
{
LegalHoldOptions options = new() { FileName = fileName };
return SetLegalHoldInternalAsync(hasLegalHold, options, cancellationToken);
}
public Task<Result> SetLegalHoldAsync(bool hasLegalHold, LegalHoldOptions options, CancellationToken cancellationToken = default)
{
return SetLegalHoldInternalAsync(hasLegalHold, options, cancellationToken);
}
public Task<Result> SetLegalHoldAsync(bool hasLegalHold, Action<LegalHoldOptions> action, CancellationToken cancellationToken = default)
{
LegalHoldOptions options = new();
action.Invoke(options);
return SetLegalHoldInternalAsync(hasLegalHold, options, cancellationToken);
}
public Task<Result<bool>> HasLegalHoldAsync(string fileName, CancellationToken cancellationToken = default)
{
LegalHoldOptions options = new() { FileName = fileName };
return HasLegalHoldInternalAsync(options, cancellationToken);
}
public Task<Result<bool>> HasLegalHoldAsync(LegalHoldOptions options, CancellationToken cancellationToken = default)
{
return HasLegalHoldInternalAsync(options, cancellationToken);
}
public Task<Result<bool>> HasLegalHoldAsync(Action<LegalHoldOptions> action, CancellationToken cancellationToken = default)
{
LegalHoldOptions options = new();
action.Invoke(options);
return HasLegalHoldInternalAsync(options, cancellationToken);
}
public Task<Result> SetStorageOptions(TOptions options, CancellationToken cancellationToken = default)
{
StorageOptions = options;
StorageClient = CreateStorageClient();
return CreateContainerAsync(cancellationToken);
}
public Task<Result> SetStorageOptions(Action<TOptions> options, CancellationToken cancellationToken = default)
{
//try to make deep copy of StorageOptions
StorageOptions = JsonSerializer.Deserialize<TOptions>(JsonSerializer.Serialize(StorageOptions))!;
options.Invoke(StorageOptions);
StorageClient = CreateStorageClient();
return CreateContainerAsync(cancellationToken);
}
public abstract Task<Result<Stream>> GetStreamAsync(string fileName, CancellationToken cancellationToken = default);
public T StorageClient { get; protected set; }
protected abstract T CreateStorageClient();
protected Task<Result> EnsureContainerExist(CancellationToken cancellationToken = default)
{
if (StorageClient is null)
throw new InvalidOperationException("Storage client is not initialized.");
if (IsContainerCreated)
return Result.Succeed()
.AsTask();
return CreateContainerAsync(cancellationToken);
}
protected UploadOptions SetUploadOptions(UploadOptions options)
{
if (string.IsNullOrWhiteSpace(options.FileName))
options.FileName = Guid.NewGuid()
.ToString("N");
if (!string.IsNullOrWhiteSpace(options.FileNamePrefix))
options.FileName = options.FileNamePrefix + options.FileName;
return options;
}
protected abstract Task<Result> CreateContainerInternalAsync(CancellationToken cancellationToken = default);
protected abstract Task<Result> DeleteDirectoryInternalAsync(string directory, CancellationToken cancellationToken = default);
protected abstract Task<Result<BlobMetadata>> UploadInternalAsync(Stream stream, UploadOptions options,
CancellationToken cancellationToken = default);
protected abstract Task<Result<LocalFile>> DownloadInternalAsync(LocalFile localFile, DownloadOptions options,
CancellationToken cancellationToken = default);
protected abstract Task<Result<bool>> DeleteInternalAsync(DeleteOptions options, CancellationToken cancellationToken = default);
protected abstract Task<Result<bool>> ExistsInternalAsync(ExistOptions options, CancellationToken cancellationToken = default);
protected abstract Task<Result<BlobMetadata>> GetBlobMetadataInternalAsync(MetadataOptions options,
CancellationToken cancellationToken = default);
protected abstract Task<Result> SetLegalHoldInternalAsync(bool hasLegalHold, LegalHoldOptions options,
CancellationToken cancellationToken = default);
protected abstract Task<Result<bool>> HasLegalHoldInternalAsync(LegalHoldOptions options, CancellationToken cancellationToken = default);
public void Dispose()
{
if (StorageClient is IDisposable disposable)
disposable.Dispose();
GC.SuppressFinalize(this);
}
}