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184 lines
5.6 KiB
C#
184 lines
5.6 KiB
C#
using MediaBrowser.Common.Configuration;
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using MediaBrowser.Model.Logging;
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using MediaBrowser.Model.Social;
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using MediaBrowser.Server.Implementations.Persistence;
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using System;
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using System.Data;
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using System.IO;
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using System.Threading;
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using System.Threading.Tasks;
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namespace MediaBrowser.Server.Implementations.Social
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{
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public class SharingRepository : BaseSqliteRepository
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{
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private IDbConnection _connection;
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private IDbCommand _saveShareCommand;
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private readonly IApplicationPaths _appPaths;
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public SharingRepository(ILogManager logManager, IApplicationPaths appPaths)
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: base(logManager)
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{
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_appPaths = appPaths;
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}
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/// <summary>
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/// Opens the connection to the database
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/// </summary>
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/// <returns>Task.</returns>
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public async Task Initialize()
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{
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var dbFile = Path.Combine(_appPaths.DataPath, "shares.db");
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_connection = await SqliteExtensions.ConnectToDb(dbFile, Logger).ConfigureAwait(false);
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string[] queries = {
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"create table if not exists Shares (Id GUID, ItemId TEXT, UserId TEXT, ExpirationDate DateTime, PRIMARY KEY (Id))",
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"create index if not exists idx_Shares on Shares(Id)",
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//pragmas
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"pragma temp_store = memory",
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"pragma shrink_memory"
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};
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_connection.RunQueries(queries, Logger);
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PrepareStatements();
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}
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/// <summary>
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/// Prepares the statements.
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/// </summary>
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private void PrepareStatements()
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{
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_saveShareCommand = _connection.CreateCommand();
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_saveShareCommand.CommandText = "replace into Shares (Id, ItemId, UserId, ExpirationDate) values (@Id, @ItemId, @UserId, @ExpirationDate)";
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_saveShareCommand.Parameters.Add(_saveShareCommand, "@Id");
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_saveShareCommand.Parameters.Add(_saveShareCommand, "@ItemId");
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_saveShareCommand.Parameters.Add(_saveShareCommand, "@UserId");
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_saveShareCommand.Parameters.Add(_saveShareCommand, "@ExpirationDate");
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}
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public async Task CreateShare(SocialShareInfo info)
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{
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if (info == null)
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{
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throw new ArgumentNullException("info");
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}
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if (string.IsNullOrWhiteSpace(info.Id))
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{
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throw new ArgumentNullException("info.Id");
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}
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var cancellationToken = CancellationToken.None;
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cancellationToken.ThrowIfCancellationRequested();
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await WriteLock.WaitAsync(cancellationToken).ConfigureAwait(false);
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IDbTransaction transaction = null;
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try
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{
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transaction = _connection.BeginTransaction();
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_saveShareCommand.GetParameter(0).Value = new Guid(info.Id);
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_saveShareCommand.GetParameter(1).Value = info.ItemId;
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_saveShareCommand.GetParameter(2).Value = info.UserId;
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_saveShareCommand.GetParameter(3).Value = info.ExpirationDate;
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_saveShareCommand.Transaction = transaction;
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_saveShareCommand.ExecuteNonQuery();
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transaction.Commit();
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}
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catch (OperationCanceledException)
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{
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if (transaction != null)
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{
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transaction.Rollback();
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}
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throw;
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}
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catch (Exception e)
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{
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Logger.ErrorException("Failed to save share:", e);
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if (transaction != null)
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{
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transaction.Rollback();
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}
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throw;
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}
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finally
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{
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if (transaction != null)
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{
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transaction.Dispose();
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}
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WriteLock.Release();
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}
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}
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public SocialShareInfo GetShareInfo(string id)
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{
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if (string.IsNullOrWhiteSpace(id))
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{
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throw new ArgumentNullException("id");
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}
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var cmd = _connection.CreateCommand();
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cmd.CommandText = "select Id, ItemId, UserId, ExpirationDate from Shares where id = @id";
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cmd.Parameters.Add(cmd, "@id", DbType.Guid).Value = new Guid(id);
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using (var reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess | CommandBehavior.SingleResult | CommandBehavior.SingleRow))
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{
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if (reader.Read())
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{
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return GetSocialShareInfo(reader);
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}
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}
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return null;
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}
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private SocialShareInfo GetSocialShareInfo(IDataReader reader)
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{
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var info = new SocialShareInfo();
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info.Id = reader.GetGuid(0).ToString("N");
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info.ItemId = reader.GetString(1);
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info.UserId = reader.GetString(2);
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info.ExpirationDate = reader.GetDateTime(3).ToUniversalTime();
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return info;
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}
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public async Task DeleteShare(string id)
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{
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}
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protected override void CloseConnection()
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{
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if (_connection != null)
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{
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if (_connection.IsOpen())
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{
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_connection.Close();
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}
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_connection.Dispose();
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_connection = null;
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}
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}
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}
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}
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