165 lines
5.5 KiB
C#
165 lines
5.5 KiB
C#
using System;
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using System.Collections.Generic;
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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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using MediaBrowser.Controller;
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using MediaBrowser.Controller.Entities;
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using MediaBrowser.Controller.Persistence;
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using MediaBrowser.Model.IO;
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using MediaBrowser.Model.Logging;
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using MediaBrowser.Model.Serialization;
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using SQLitePCL.pretty;
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namespace Emby.Server.Implementations.Data
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{
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/// <summary>
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/// Class SQLiteUserRepository
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/// </summary>
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public class SqliteUserRepository : BaseSqliteRepository, IUserRepository
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{
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private readonly IJsonSerializer _jsonSerializer;
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private readonly IMemoryStreamFactory _memoryStreamProvider;
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public SqliteUserRepository(ILogger logger, IServerApplicationPaths appPaths, IJsonSerializer jsonSerializer, IMemoryStreamFactory memoryStreamProvider)
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: base(logger)
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{
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_jsonSerializer = jsonSerializer;
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_memoryStreamProvider = memoryStreamProvider;
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DbFilePath = Path.Combine(appPaths.DataPath, "users.db");
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}
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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 "SQLite";
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}
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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 void Initialize()
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{
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using (var connection = CreateConnection())
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{
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string[] queries = {
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"create table if not exists users (guid GUID primary key, data BLOB)",
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"create index if not exists idx_users on users(guid)",
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"create table if not exists schema_version (table_name primary key, version)",
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"pragma shrink_memory"
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};
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connection.RunQueries(queries);
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}
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}
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/// <summary>
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/// Save a user in the repo
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/// </summary>
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/// <param name="user">The user.</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">user</exception>
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public async Task SaveUser(User user, CancellationToken cancellationToken)
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{
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if (user == null)
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{
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throw new ArgumentNullException("user");
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}
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cancellationToken.ThrowIfCancellationRequested();
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var serialized = _jsonSerializer.SerializeToBytes(user, _memoryStreamProvider);
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cancellationToken.ThrowIfCancellationRequested();
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using (WriteLock.Write())
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{
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using (var connection = CreateConnection())
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{
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connection.RunInTransaction(db =>
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{
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using (var statement = db.PrepareStatement("replace into users (guid, data) values (@guid, @data)"))
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{
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statement.TryBind("@guid", user.Id.ToGuidParamValue());
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statement.TryBind("@data", serialized);
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statement.MoveNext();
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}
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});
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}
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}
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}
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/// <summary>
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/// Retrieve all users from the database
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/// </summary>
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/// <returns>IEnumerable{User}.</returns>
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public IEnumerable<User> RetrieveAllUsers()
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{
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var list = new List<User>();
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using (WriteLock.Read())
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{
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using (var connection = CreateConnection(true))
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{
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foreach (var row in connection.Query("select guid,data from users"))
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{
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var id = row[0].ReadGuid();
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using (var stream = _memoryStreamProvider.CreateNew(row[1].ToBlob()))
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{
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stream.Position = 0;
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var user = _jsonSerializer.DeserializeFromStream<User>(stream);
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user.Id = id;
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list.Add(user);
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}
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}
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}
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}
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return list;
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}
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/// <summary>
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/// Deletes the user.
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/// </summary>
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/// <param name="user">The user.</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">user</exception>
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public async Task DeleteUser(User user, CancellationToken cancellationToken)
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{
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if (user == null)
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{
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throw new ArgumentNullException("user");
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}
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cancellationToken.ThrowIfCancellationRequested();
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using (WriteLock.Write())
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{
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using (var connection = CreateConnection())
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{
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connection.RunInTransaction(db =>
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{
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using (var statement = db.PrepareStatement("delete from users where guid=@id"))
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{
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statement.TryBind("@id", user.Id.ToGuidParamValue());
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statement.MoveNext();
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}
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});
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}
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}
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}
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}
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} |