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191 lines
6.4 KiB
191 lines
6.4 KiB
using MediaBrowser.Common.Configuration;
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using MediaBrowser.Controller.Entities;
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using MediaBrowser.Controller.Persistence;
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using MediaBrowser.Model.Logging;
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using MediaBrowser.Model.Serialization;
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using System;
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using System.Collections.Generic;
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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.Sqlite
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{
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/// <summary>
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/// Class SQLiteUserDataRepository
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/// </summary>
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public class SQLiteUserDataRepository : SqliteRepository, IUserDataRepository
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{
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/// <summary>
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/// The repository name
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/// </summary>
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public const string RepositoryName = "SQLite";
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/// <summary>
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/// Gets the name of the repository
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/// </summary>
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/// <value>The name.</value>
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public string Name
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{
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get
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{
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return RepositoryName;
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}
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}
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/// <summary>
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/// The _protobuf serializer
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/// </summary>
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private readonly IProtobufSerializer _protobufSerializer;
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/// <summary>
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/// The _app paths
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/// </summary>
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private readonly IApplicationPaths _appPaths;
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/// <summary>
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/// Initializes a new instance of the <see cref="SQLiteUserDataRepository" /> class.
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/// </summary>
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/// <param name="appPaths">The app paths.</param>
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/// <param name="protobufSerializer">The protobuf serializer.</param>
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/// <param name="logger">The logger.</param>
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/// <exception cref="System.ArgumentNullException">protobufSerializer</exception>
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public SQLiteUserDataRepository(IApplicationPaths appPaths, IProtobufSerializer protobufSerializer, ILogger logger)
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: base(logger)
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{
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if (protobufSerializer == null)
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{
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throw new ArgumentNullException("protobufSerializer");
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}
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if (appPaths == null)
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{
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throw new ArgumentNullException("appPaths");
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}
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_protobufSerializer = protobufSerializer;
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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, "userdata.db");
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await ConnectToDB(dbFile).ConfigureAwait(false);
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string[] queries = {
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"create table if not exists userdata (id GUID, userId GUID, data BLOB)",
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"create unique index if not exists userdataindex on userdata (id, userId)",
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"create table if not exists schema_version (table_name primary key, version)",
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//pragmas
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"pragma temp_store = memory"
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};
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RunQueries(queries);
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}
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/// <summary>
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/// Saves the user data.
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/// </summary>
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/// <param name="userId">The user id.</param>
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/// <param name="userDataId">The user data id.</param>
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/// <param name="userData">The user data.</param>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <returns>Task.</returns>
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/// <exception cref="System.ArgumentNullException">
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/// userData
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/// or
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/// cancellationToken
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/// or
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/// userId
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/// or
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/// userDataId
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/// </exception>
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public Task SaveUserData(Guid userId, Guid userDataId, UserItemData userData, CancellationToken cancellationToken)
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{
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if (userData == null)
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{
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throw new ArgumentNullException("userData");
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}
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if (cancellationToken == null)
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{
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throw new ArgumentNullException("cancellationToken");
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}
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if (userId == Guid.Empty)
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{
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throw new ArgumentNullException("userId");
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}
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if (userDataId == Guid.Empty)
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{
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throw new ArgumentNullException("userDataId");
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}
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cancellationToken.ThrowIfCancellationRequested();
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return Task.Run(() =>
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{
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var serialized = _protobufSerializer.SerializeToBytes(userData);
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cancellationToken.ThrowIfCancellationRequested();
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var cmd = connection.CreateCommand();
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cmd.CommandText = "replace into userdata (id, userId, data) values (@1, @2, @3)";
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cmd.AddParam("@1", userDataId);
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cmd.AddParam("@2", userId);
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cmd.AddParam("@3", serialized);
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QueueCommand(cmd);
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});
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}
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/// <summary>
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/// Gets the user data.
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/// </summary>
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/// <param name="userId">The user id.</param>
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/// <param name="userDataId">The user data id.</param>
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/// <returns>Task{UserItemData}.</returns>
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/// <exception cref="System.ArgumentNullException">
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/// userId
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/// or
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/// userDataId
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/// </exception>
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public async Task<UserItemData> GetUserData(Guid userId, Guid userDataId)
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{
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if (userId == Guid.Empty)
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{
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throw new ArgumentNullException("userId");
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}
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if (userDataId == Guid.Empty)
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{
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throw new ArgumentNullException("userDataId");
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}
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var cmd = connection.CreateCommand();
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cmd.CommandText = "select data from userdata where id = @id and userId=@userId";
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var idParam = cmd.Parameters.Add("@id", DbType.Guid);
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idParam.Value = userDataId;
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var userIdParam = cmd.Parameters.Add("@userId", DbType.Guid);
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userIdParam.Value = userId;
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using (var reader = await cmd.ExecuteReaderAsync(CommandBehavior.SequentialAccess | CommandBehavior.SingleResult | CommandBehavior.SingleRow).ConfigureAwait(false))
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{
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if (reader.Read())
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{
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using (var stream = GetStream(reader, 0))
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{
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return _protobufSerializer.DeserializeFromStream<UserItemData>(stream);
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}
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}
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}
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return null;
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}
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}
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}
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