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FileAppService.cs
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FileAppService.cs
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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Linq.Dynamic.Core;
using System.Threading.Tasks;
using EasyAbp.FileManagement.Containers;
using EasyAbp.FileManagement.Files.Dtos;
using EasyAbp.FileManagement.Options.Containers;
using EasyAbp.FileManagement.Permissions;
using EasyAbp.FileManagement.Users;
using JetBrains.Annotations;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Authorization.Infrastructure;
using Microsoft.Extensions.Caching.Distributed;
using Volo.Abp.Application.Dtos;
using Volo.Abp.Application.Services;
using Volo.Abp.Caching;
using Volo.Abp.Content;
using Volo.Abp.ObjectExtending;
using Volo.Abp.Users;
namespace EasyAbp.FileManagement.Files
{
public class FileAppService : ReadOnlyAppService<File, FileInfoDto, Guid, GetFileListInput>, IFileAppService
{
private readonly IFileManager _fileManager;
private readonly IFileRepository _repository;
private readonly IFileUserLookupService _fileUserLookupService;
private readonly IFileContainerConfigurationProvider _configurationProvider;
public FileAppService(
IFileManager fileManager,
IFileRepository repository,
IFileUserLookupService fileUserLookupService,
IFileContainerConfigurationProvider configurationProvider) : base(repository)
{
_fileManager = fileManager;
_repository = repository;
_fileUserLookupService = fileUserLookupService;
_configurationProvider = configurationProvider;
}
public override async Task<FileInfoDto> GetAsync(Guid id)
{
var file = await GetEntityByIdAsync(id);
await AuthorizationService.CheckAsync(new FileGetInfoOperationInfoModel(file),
new OperationAuthorizationRequirement { Name = FileManagementPermissions.File.Default });
return await MapToGetOutputDtoAsync(file);
}
public override async Task<PagedResultDto<FileInfoDto>> GetListAsync(GetFileListInput input)
{
await AuthorizationService.CheckAsync(
new FileGetListOperationInfoModel(input.ParentId, input.FileContainerName, input.OwnerUserId),
new OperationAuthorizationRequirement { Name = FileManagementPermissions.File.Default });
var query = await CreateFilteredQueryAsync(input);
var totalCount = await AsyncExecuter.CountAsync(query);
var entityDtos = new List<FileInfoDto>();
if (totalCount > 0)
{
query = ApplySorting(query, input);
query = ApplyPaging(query, input);
var entities = await AsyncExecuter.ToListAsync(query);
entityDtos = await MapToGetListOutputDtosAsync(entities);
}
return new PagedResultDto<FileInfoDto>(
totalCount,
entityDtos
);
}
protected override async Task<List<FileInfoDto>> MapToGetListOutputDtosAsync(List<File> entities)
{
var dtos = await base.MapToGetListOutputDtosAsync(entities);
await LoadRelatedUserInfoModelsAsync(dtos);
return dtos;
}
protected override async Task<FileInfoDto> MapToGetOutputDtoAsync(File entity)
{
var dto = await base.MapToGetOutputDtoAsync(entity);
await LoadRelatedUserInfoModelsAsync(new List<FileInfoDto> { dto });
return dto;
}
protected virtual async Task LoadRelatedUserInfoModelsAsync(IList<FileInfoDto> dtos)
{
var userIds = dtos
.Where(x => x.CreatorId.HasValue)
.Select(x => x.CreatorId.Value)
.Distinct()
.Union(dtos
.Where(x => x.LastModifierId.HasValue)
.Select(x => x.LastModifierId.Value)
.Distinct())
.Union(dtos
.Where(x => x.OwnerUserId.HasValue)
.Select(x => x.OwnerUserId.Value)
.Distinct())
.ToList();
var users = new Dictionary<Guid, BriefFileUserInfoModel>();
foreach (var userId in userIds)
{
users[userId] = (await _fileUserLookupService.FindByIdAsync(userId)).ToBriefUserInfoModel();
}
foreach (var dto in dtos)
{
if (dto.CreatorId.HasValue)
{
dto.Creator = users[dto.CreatorId.Value];
}
if (dto.LastModifierId.HasValue)
{
dto.LastModifier = users[dto.LastModifierId.Value];
}
if (dto.OwnerUserId.HasValue)
{
dto.Owner = users[dto.OwnerUserId.Value];
}
}
}
protected override IQueryable<File> ApplySorting(IQueryable<File> query, GetFileListInput input)
{
return input.Sorting.IsNullOrWhiteSpace()
? query.OrderBy(x => x.FileType).ThenBy(x => x.FileName)
: query.OrderBy(x => x.FileType).ThenBy(input.Sorting!);
}
protected override async Task<IQueryable<File>> CreateFilteredQueryAsync(GetFileListInput input)
{
await Task.CompletedTask;
return (await _repository.GetQueryableAsync())
.Where(x => x.ParentId == input.ParentId && x.OwnerUserId == input.OwnerUserId &&
x.FileContainerName == input.FileContainerName)
.WhereIf(input.DirectoryOnly, x => x.FileType == FileType.Directory)
.WhereIf(!input.Filter.IsNullOrWhiteSpace(), x => x.FileName.Contains(input.Filter));
}
[Authorize]
public virtual async Task<CreateFileOutput> CreateAsync(CreateFileInput input)
{
var fileName = ProcessInputFileName(false, input.FileName);
var parent = await TryGetEntityByNullableIdAsync(input.ParentId);
await AuthorizationService.CheckAsync(
new FileCreationOperationInfoModel(parent, input.FileContainerName, fileName, input.MimeType,
input.FileType, input.Content?.LongLength, input.OwnerUserId),
new OperationAuthorizationRequirement { Name = FileManagementPermissions.File.Create });
var model = new CreateFileModel(input.FileContainerName, input.OwnerUserId, fileName.Trim(), input.MimeType,
input.FileType, parent, input.Content);
input.MapExtraPropertiesTo(model, MappingPropertyDefinitionChecks.Source);
var file = await _fileManager.CreateAsync(model);
return await MapToCreateOutputDtoAsync(file);
}
[Authorize]
public virtual async Task<CreateFileOutput> CreateWithStreamAsync(CreateFileWithStreamInput input)
{
var fileName = ProcessInputFileName(input.GenerateUniqueFileName, input.Content.FileName);
var parent = await TryGetEntityByNullableIdAsync(input.ParentId);
await AuthorizationService.CheckAsync(
new FileCreationOperationInfoModel(parent, input.FileContainerName, fileName, input.Content.ContentType,
FileType.RegularFile, input.Content.ContentLength, input.OwnerUserId),
new OperationAuthorizationRequirement { Name = FileManagementPermissions.File.Create });
var model = new CreateFileWithStreamModel(input.FileContainerName, input.OwnerUserId, fileName,
input.Content.ContentType, FileType.RegularFile, parent, input.Content.GetStream());
input.MapExtraPropertiesTo(model, MappingPropertyDefinitionChecks.Source);
var file = await _fileManager.CreateAsync(model);
return await MapToCreateOutputDtoAsync(file);
}
protected virtual async Task<CreateFileOutput> MapToCreateOutputDtoAsync(File file)
{
var downloadInfo = file.FileType == FileType.RegularFile
? await _fileManager.GetDownloadInfoAsync(file)
: null;
return new CreateFileOutput
{
FileInfo = ObjectMapper.Map<File, FileInfoDto>(file),
DownloadInfo = downloadInfo
};
}
[Authorize]
public virtual async Task DeleteAsync(Guid id)
{
var file = await GetEntityByIdAsync(id);
await AuthorizationService.CheckAsync(
new FileDeletionOperationInfoModel(file),
new OperationAuthorizationRequirement { Name = FileManagementPermissions.File.Delete });
await _fileManager.DeleteAsync(file);
}
public virtual async Task<CreateManyFileOutput> CreateManyAsync(CreateManyFileInput input)
{
var fileNames = new Dictionary<CreateFileInput, string>();
var parents = new Dictionary<Guid, File>();
foreach (var fileInfo in input.FileInfos)
{
fileNames[fileInfo] = ProcessInputFileName(false, fileInfo.FileName);
if (fileInfo.ParentId != null && !parents.ContainsKey(fileInfo.ParentId.Value))
{
parents[fileInfo.ParentId.Value] = await TryGetEntityByNullableIdAsync(fileInfo.ParentId.Value);
}
await AuthorizationService.CheckAsync(
new FileCreationOperationInfoModel(
fileInfo.ParentId.HasValue ? parents[fileInfo.ParentId.Value] : null,
fileInfo.FileContainerName, fileInfo.FileName, fileInfo.MimeType, fileInfo.FileType,
fileInfo.Content?.LongLength, fileInfo.OwnerUserId),
new OperationAuthorizationRequirement { Name = FileManagementPermissions.File.Create });
}
var models = new List<CreateFileModel>();
foreach (var model in input.FileInfos.Select(fileInfo => new CreateFileModel(fileInfo.FileContainerName,
fileInfo.OwnerUserId, fileNames[fileInfo], fileInfo.MimeType, fileInfo.FileType,
fileInfo.ParentId.HasValue ? parents[fileInfo.ParentId.Value] : null, fileInfo.Content)))
{
input.MapExtraPropertiesTo(model, MappingPropertyDefinitionChecks.Source);
models.Add(model);
}
var files = await _fileManager.CreateManyAsync(models);
var outputItems = new List<CreateFileOutput>();
foreach (var file in files)
{
outputItems.Add(await MapToCreateOutputDtoAsync(file));
}
return new CreateManyFileOutput { Items = outputItems };
}
public virtual async Task<CreateManyFileOutput> CreateManyWithStreamAsync(CreateManyFileWithStreamInput input)
{
var parent = await TryGetEntityByNullableIdAsync(input.ParentId);
var fileNames = new Dictionary<IRemoteStreamContent, string>();
foreach (var fileInfo in input.FileContents)
{
fileNames[fileInfo] = ProcessInputFileName(input.GenerateUniqueFileName, fileInfo.FileName);
await AuthorizationService.CheckAsync(
new FileCreationOperationInfoModel(parent, input.FileContainerName, fileInfo.FileName,
fileInfo.ContentType, FileType.RegularFile, fileInfo.ContentLength, input.OwnerUserId),
new OperationAuthorizationRequirement { Name = FileManagementPermissions.File.Create });
}
var models = new List<CreateFileWithStreamModel>();
foreach (var model in input.FileContents.Select(fileInfo => new CreateFileWithStreamModel(
input.FileContainerName, input.OwnerUserId, fileNames[fileInfo], fileInfo.ContentType,
FileType.RegularFile, parent, fileInfo.GetStream())))
{
input.MapExtraPropertiesTo(model, MappingPropertyDefinitionChecks.Source);
models.Add(model);
}
var files = await _fileManager.CreateManyAsync(models);
var outputItems = new List<CreateFileOutput>();
foreach (var file in files)
{
outputItems.Add(await MapToCreateOutputDtoAsync(file));
}
return new CreateManyFileOutput { Items = outputItems };
}
protected virtual string ProcessInputFileName(bool generateUniqueFileName, [CanBeNull] string inputFileName)
{
return generateUniqueFileName || inputFileName == null
? GenerateUniqueFileName(inputFileName)
: inputFileName;
}
[Authorize]
public virtual async Task<FileInfoDto> MoveAsync(Guid id, MoveFileInput input)
{
var newFileName = ProcessInputFileName(false, input.NewFileName);
var file = await GetEntityByIdAsync(id);
var newParent = await TryGetEntityByNullableIdAsync(input.NewParentId);
await AuthorizationService.CheckAsync(
new FileMoveOperationInfoModel(file, newParent, newFileName, file.MimeType),
new OperationAuthorizationRequirement { Name = FileManagementPermissions.File.Move });
input.MapExtraPropertiesTo(file);
await _fileManager.MoveAsync(file, new MoveFileModel(newParent, newFileName, file.MimeType));
return await MapToGetOutputDtoAsync(file);
}
protected virtual async Task<File> TryGetEntityByNullableIdAsync(Guid? fileId)
{
return fileId.HasValue ? await GetEntityByIdAsync(fileId.Value) : null;
}
public virtual async Task<FileDownloadInfoModel> GetDownloadInfoAsync(Guid id)
{
var file = await GetEntityByIdAsync(id);
await AuthorizationService.CheckAsync(new FileGetDownloadInfoOperationInfoModel(file),
new OperationAuthorizationRequirement { Name = FileManagementPermissions.File.GetDownloadInfo });
var downloadLimitCache =
LazyServiceProvider.LazyGetRequiredService<IDistributedCache<UserFileDownloadLimitCacheItem>>();
var configuration = _configurationProvider.Get(file.FileContainerName);
if (!configuration.GetDownloadInfoTimesLimitEachUserPerMinute.HasValue)
{
return await _fileManager.GetDownloadInfoAsync(file);
}
var cacheItemKey = GetDownloadLimitCacheItemKey();
var absoluteExpiration = Clock.Now.AddMinutes(1);
var cacheItem = await downloadLimitCache.GetOrAddAsync(GetDownloadLimitCacheItemKey(),
() => Task.FromResult(new UserFileDownloadLimitCacheItem
{
Count = 0,
AbsoluteExpiration = absoluteExpiration
}), () => new DistributedCacheEntryOptions
{
AbsoluteExpiration = absoluteExpiration
});
if (cacheItem!.Count >= configuration.GetDownloadInfoTimesLimitEachUserPerMinute.Value)
{
throw new UserGetDownloadInfoExceededLimitException();
}
var infoModel = await _fileManager.GetDownloadInfoAsync(file);
cacheItem.Count++;
await downloadLimitCache.SetAsync(cacheItemKey, cacheItem, new DistributedCacheEntryOptions
{
AbsoluteExpiration = cacheItem.AbsoluteExpiration
});
return infoModel;
}
protected virtual string GetDownloadLimitCacheItemKey()
{
return CurrentUser.GetId().ToString();
}
[Authorize]
public virtual async Task<FileInfoDto> UpdateInfoAsync(Guid id, UpdateFileInfoInput input)
{
var newFileName = ProcessInputFileName(false, input.FileName);
var file = await GetEntityByIdAsync(id);
await AuthorizationService.CheckAsync(
new FileUpdateInfoOperationInfoModel(file, newFileName, file.MimeType),
new OperationAuthorizationRequirement { Name = FileManagementPermissions.File.Update });
input.MapExtraPropertiesTo(file);
await _fileManager.UpdateInfoAsync(file, new UpdateFileInfoModel(newFileName, file.MimeType));
return await MapToGetOutputDtoAsync(file);
}
public virtual async Task<FileDownloadOutput> DownloadAsync(Guid id, string token)
{
var provider = LazyServiceProvider.LazyGetRequiredService<ILocalFileDownloadProvider>();
await provider.CheckTokenAsync(token, id);
var file = await GetEntityByIdAsync(id);
return new FileDownloadOutput
{
FileName = file.FileName,
MimeType = file.MimeType,
Content = await provider.GetDownloadBytesAsync(file)
};
}
public virtual async Task<IRemoteStreamContent> DownloadWithStreamAsync(Guid id, string token)
{
var provider = LazyServiceProvider.LazyGetRequiredService<ILocalFileDownloadProvider>();
await provider.CheckTokenAsync(token, id);
var file = await GetEntityByIdAsync(id);
return new RemoteStreamContent(
await provider.GetDownloadStreamAsync(file),
fileName: file.FileName,
contentType: file.MimeType);
}
[Authorize]
public virtual Task<PublicFileContainerConfiguration> GetConfigurationAsync(string fileContainerName,
Guid? ownerUserId)
{
return Task.FromResult(_configurationProvider.Get(fileContainerName).ToPublicConfiguration());
}
public virtual async Task<FileLocationDto> GetLocationAsync(Guid id)
{
var file = await GetEntityByIdAsync(id);
var location = await _fileManager.GetFileLocationAsync(file);
return new FileLocationDto
{
Id = file.Id,
Location = location
};
}
public virtual async Task<FileInfoDto> GetByPathAsync(string path, string fileContainerName, Guid? ownerUserId)
{
var file = await _fileManager.GetByPathAsync(path, fileContainerName, ownerUserId);
await AuthorizationService.CheckAsync(new FileGetInfoOperationInfoModel(file),
new OperationAuthorizationRequirement { Name = FileManagementPermissions.File.Default });
return await MapToGetOutputDtoAsync(file);
}
protected virtual string GenerateUniqueFileName([CanBeNull] string fileName)
{
return Guid.NewGuid().ToString("N") + Path.GetExtension(fileName);
}
}
}