DocSpace-buildtools/common/ASC.Data.Storage/StorageUploader.cs

/*
 *
 * (c) Copyright Ascensio System Limited 2010-2018
 *
 * This program is freeware. You can redistribute it and/or modify it under the terms of the GNU 
 * General Public License (GPL) version 3 as published by the Free Software Foundation (https://www.gnu.org/copyleft/gpl.html). 
 * In accordance with Section 7(a) of the GNU GPL its Section 15 shall be amended to the effect that 
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 *
 * THIS PROGRAM IS DISTRIBUTED WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY OR
 * FITNESS FOR A PARTICULAR PURPOSE. For more details, see GNU GPL at https://www.gnu.org/copyleft/gpl.html
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*/


using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;

using ASC.Common;
using ASC.Common.Caching;
using ASC.Common.Logging;
using ASC.Common.Threading.Progress;
using ASC.Core;
using ASC.Core.Common.Settings;
using ASC.Core.Tenants;
using ASC.Data.Storage.Configuration;
using ASC.Migration;

using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Options;

namespace ASC.Data.Storage
{
    [Singletone]
    public class StorageUploader
    {
        private static readonly TaskScheduler Scheduler;
        private static readonly CancellationTokenSource TokenSource;

        private ICache Cache { get; set; }
        private static readonly object Locker;

        private IServiceProvider ServiceProvider { get; }
        private TempStream TempStream { get; }
        private ICacheNotify<MigrationProgress> CacheMigrationNotify { get; }

        static StorageUploader()
        {
            Scheduler = new ConcurrentExclusiveSchedulerPair(TaskScheduler.Default, 4).ConcurrentScheduler;
            TokenSource = new CancellationTokenSource();
            Locker = new object();
        }

        public StorageUploader(IServiceProvider serviceProvider, TempStream tempStream, ICacheNotify<MigrationProgress> cacheMigrationNotify, ICache cache)
        {
            ServiceProvider = serviceProvider;
            TempStream = tempStream;
            CacheMigrationNotify = cacheMigrationNotify;
            Cache = cache;
        }

        public void Start(int tenantId, StorageSettings newStorageSettings, StorageFactoryConfig storageFactoryConfig)
        {
            if (TokenSource.Token.IsCancellationRequested) return;

            MigrateOperation migrateOperation;

            lock (Locker)
            {
                migrateOperation = Cache.Get<MigrateOperation>(GetCacheKey(tenantId));
                if (migrateOperation != null) return;

                migrateOperation = new MigrateOperation(ServiceProvider, CacheMigrationNotify, tenantId, newStorageSettings, storageFactoryConfig, TempStream);
                Cache.Insert(GetCacheKey(tenantId), migrateOperation, DateTime.MaxValue);
            }

            var task = new Task(migrateOperation.RunJob, TokenSource.Token, TaskCreationOptions.LongRunning);

            task.ConfigureAwait(false)
                .GetAwaiter()
                .OnCompleted(() =>
                {
                    lock (Locker)
                    {
                        Cache.Remove(GetCacheKey(tenantId));
                    }
                });

            task.Start(Scheduler);
        }

        public MigrateOperation GetProgress(int tenantId)
        {
            lock (Locker)
            {
                return Cache.Get<MigrateOperation>(GetCacheKey(tenantId));
            }
        }

        public static void Stop()
        {
            TokenSource.Cancel();
        }

        private static string GetCacheKey(int tenantId)
        {
            return typeof(MigrateOperation).FullName + tenantId;
        }
    }

    public class MigrateOperation : ProgressBase
    {
        private readonly ILog Log;
        private static readonly string ConfigPath;
        private readonly IEnumerable<string> Modules;
        private readonly StorageSettings settings;
        private readonly int tenantId;

        static MigrateOperation()
        {
            ConfigPath = "";
        }

        public MigrateOperation(
            IServiceProvider serviceProvider,
            ICacheNotify<MigrationProgress> cacheMigrationNotify,
            int tenantId,
            StorageSettings settings,
            StorageFactoryConfig storageFactoryConfig,
            TempStream tempStream)
        {
            ServiceProvider = serviceProvider;
            CacheMigrationNotify = cacheMigrationNotify;
            this.tenantId = tenantId;
            this.settings = settings;
            StorageFactoryConfig = storageFactoryConfig;
            TempStream = tempStream;
            Modules = storageFactoryConfig.GetModuleList(ConfigPath, true);
            StepCount = Modules.Count();
            Log = serviceProvider.GetService<IOptionsMonitor<ILog>>().CurrentValue;
        }

        private IServiceProvider ServiceProvider { get; }
        private StorageFactoryConfig StorageFactoryConfig { get; }
        private TempStream TempStream { get; }
        private ICacheNotify<MigrationProgress> CacheMigrationNotify { get; }

        protected override void DoJob()
        {
            try
            {
                Log.DebugFormat("Tenant: {0}", tenantId);
                using var scope = ServiceProvider.CreateScope();
                var tempPath = scope.ServiceProvider.GetService<TempPath>();
                var scopeClass = scope.ServiceProvider.GetService<MigrateOperationScope>();
                var (tenantManager, securityContext, storageFactory, options, storageSettingsHelper, settingsManager) = scopeClass;
                var tenant = tenantManager.GetTenant(tenantId);
                tenantManager.SetCurrentTenant(tenant);

                securityContext.AuthenticateMe(tenant.OwnerId);

                foreach (var module in Modules)
                {
                    var oldStore = storageFactory.GetStorage(ConfigPath, tenantId.ToString(), module);
                    var store = storageFactory.GetStorageFromConsumer(ConfigPath, tenantId.ToString(), module, storageSettingsHelper.DataStoreConsumer(settings));
                    var domains = StorageFactoryConfig.GetDomainList(ConfigPath, module).ToList();

                    var crossModuleTransferUtility = new CrossModuleTransferUtility(options, TempStream, tempPath, oldStore, store);

                    string[] files;
                    foreach (var domain in domains)
                    {
                        Status = module + domain;
                        Log.DebugFormat("Domain: {0}", domain);
                        files = oldStore.ListFilesRelative(domain, "\\", "*.*", true);

                        foreach (var file in files)
                        {
                            Log.DebugFormat("File: {0}", file);
                            crossModuleTransferUtility.CopyFile(domain, file, domain, file);
                        }
                    }

                    Log.Debug("Domain:");

                    files = oldStore.ListFilesRelative(string.Empty, "\\", "*.*", true)
                        .Where(path => domains.All(domain => !path.Contains(domain + "/")))
                        .ToArray();

                    foreach (var file in files)
                    {
                        Log.DebugFormat("File: {0}", file);
                        crossModuleTransferUtility.CopyFile("", file, "", file);
                    }

                    StepDone();

                    MigrationPublish();
                }

                settingsManager.Save(settings);
                tenant.SetStatus(TenantStatus.Active);
                tenantManager.SaveTenant(tenant);
            }
            catch (Exception e)
            {
                Error = e;
                Log.Error(e);
            }

            MigrationPublish();
        }

        private void MigrationPublish()
        {
            CacheMigrationNotify.Publish(new MigrationProgress
            {
                TenantId = tenantId,
                Progress = Percentage,
                Error = Error.ToString(),
                IsCompleted = IsCompleted
            },
            CacheNotifyAction.Insert);
        }
    }

    public class MigrateOperationScope
    {
        private TenantManager TenantManager { get; }
        private SecurityContext SecurityContext { get; }
        private StorageFactory StorageFactory { get; }
        private IOptionsMonitor<ILog> Options { get; }
        private StorageSettingsHelper StorageSettingsHelper { get; }
        private SettingsManager SettingsManager { get; }

        public MigrateOperationScope(TenantManager tenantManager,
            SecurityContext securityContext,
            StorageFactory storageFactory,
            IOptionsMonitor<ILog> options,
            StorageSettingsHelper storageSettingsHelper,
            SettingsManager settingsManager)
        {
            TenantManager = tenantManager;
            SecurityContext = securityContext;
            StorageFactory = storageFactory;
            Options = options;
            StorageSettingsHelper = storageSettingsHelper;
            SettingsManager = settingsManager;
        }

        public void Deconstruct(out TenantManager tenantManager,
            out SecurityContext securityContext,
            out StorageFactory storageFactory,
            out IOptionsMonitor<ILog> options,
            out StorageSettingsHelper storageSettingsHelper,
            out SettingsManager settingsManager)
        {
            tenantManager = TenantManager;
            securityContext = SecurityContext;
            storageFactory = StorageFactory;
            options = Options;
            storageSettingsHelper = StorageSettingsHelper;
            settingsManager = SettingsManager;
        }
    }
}