jellyfin-server/Emby.Server.Implementations/Data/SqliteUserRepository.cs

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using System;
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using System.Collections.Generic;
using System.IO;
using MediaBrowser.Controller;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Persistence;
using MediaBrowser.Model.Serialization;
using Microsoft.Extensions.Logging;
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using SQLitePCL.pretty;
namespace Emby.Server.Implementations.Data
{
/// <summary>
/// Class SQLiteUserRepository
/// </summary>
public class SqliteUserRepository : BaseSqliteRepository, IUserRepository
{
private readonly IJsonSerializer _jsonSerializer;
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public SqliteUserRepository(ILogger logger, IServerApplicationPaths appPaths, IJsonSerializer jsonSerializer)
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: base(logger)
{
_jsonSerializer = jsonSerializer;
DbFilePath = Path.Combine(appPaths.DataPath, "users.db");
}
/// <summary>
/// Gets the name of the repository
/// </summary>
/// <value>The name.</value>
public string Name => "SQLite";
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/// <summary>
/// Opens the connection to the database
/// </summary>
/// <returns>Task.</returns>
public void Initialize()
{
using (var connection = CreateConnection())
{
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RunDefaultInitialization(connection);
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var localUsersTableExists = TableExists(connection, "LocalUsersv2");
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connection.RunQueries(new[] {
"create table if not exists LocalUsersv2 (Id INTEGER PRIMARY KEY, guid GUID NOT NULL, data BLOB NOT NULL)",
"drop index if exists idx_users"
});
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if (!localUsersTableExists && TableExists(connection, "Users"))
{
TryMigrateToLocalUsersTable(connection);
}
}
}
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private void TryMigrateToLocalUsersTable(ManagedConnection connection)
{
try
{
connection.RunQueries(new[]
{
"INSERT INTO LocalUsersv2 (guid, data) SELECT guid,data from users"
});
}
catch (Exception ex)
{
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Logger.LogError(ex, "Error migrating users database");
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}
}
/// <summary>
/// Save a user in the repo
/// </summary>
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public void CreateUser(User user)
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{
if (user == null)
{
throw new ArgumentNullException(nameof(user));
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}
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var serialized = _jsonSerializer.SerializeToBytes(user);
using (WriteLock.Write())
{
using (var connection = CreateConnection())
{
connection.RunInTransaction(db =>
{
using (var statement = db.PrepareStatement("insert into LocalUsersv2 (guid, data) values (@guid, @data)"))
{
statement.TryBind("@guid", user.Id.ToGuidBlob());
statement.TryBind("@data", serialized);
statement.MoveNext();
}
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var createdUser = GetUser(user.Id, false);
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if (createdUser == null)
{
throw new ApplicationException("created user should never be null");
}
user.InternalId = createdUser.InternalId;
}, TransactionMode);
}
}
}
public void UpdateUser(User user)
{
if (user == null)
{
throw new ArgumentNullException(nameof(user));
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}
var serialized = _jsonSerializer.SerializeToBytes(user);
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using (WriteLock.Write())
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{
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using (var connection = CreateConnection())
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{
connection.RunInTransaction(db =>
{
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using (var statement = db.PrepareStatement("update LocalUsersv2 set data=@data where Id=@InternalId"))
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{
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statement.TryBind("@InternalId", user.InternalId);
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statement.TryBind("@data", serialized);
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statement.MoveNext();
}
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}, TransactionMode);
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}
}
}
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private User GetUser(Guid guid, bool openLock)
{
using (openLock ? WriteLock.Read() : null)
{
using (var connection = CreateConnection(true))
{
using (var statement = connection.PrepareStatement("select id,guid,data from LocalUsersv2 where guid=@guid"))
{
statement.TryBind("@guid", guid);
foreach (var row in statement.ExecuteQuery())
{
return GetUser(row);
}
}
}
}
return null;
}
private User GetUser(IReadOnlyList<IResultSetValue> row)
{
var id = row[0].ToInt64();
var guid = row[1].ReadGuidFromBlob();
using (var stream = new MemoryStream(row[2].ToBlob()))
{
stream.Position = 0;
var user = _jsonSerializer.DeserializeFromStream<User>(stream);
user.InternalId = id;
user.Id = guid;
return user;
}
}
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/// <summary>
/// Retrieve all users from the database
/// </summary>
/// <returns>IEnumerable{User}.</returns>
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public List<User> RetrieveAllUsers()
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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 id,guid,data from LocalUsersv2"))
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{
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list.Add(GetUser(row));
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}
}
}
return list;
}
/// <summary>
/// Deletes the user.
/// </summary>
/// <param name="user">The user.</param>
/// <returns>Task.</returns>
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/// <exception cref="ArgumentNullException">user</exception>
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public void DeleteUser(User user)
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{
if (user == null)
{
throw new ArgumentNullException(nameof(user));
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}
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using (WriteLock.Write())
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{
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using (var connection = CreateConnection())
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{
connection.RunInTransaction(db =>
{
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using (var statement = db.PrepareStatement("delete from LocalUsersv2 where Id=@id"))
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{
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statement.TryBind("@id", user.InternalId);
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statement.MoveNext();
}
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}, TransactionMode);
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}
}
}
}
}