sozsoft-platform/api/src/Sozsoft.Platform.Domain/Data/PlatformDbMigrationService.cs

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Threading.Tasks;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Logging.Abstractions;
using Sozsoft.Platform.Data.Seeds;
using StackExchange.Redis;
using Volo.Abp.Data;
using Volo.Abp.DependencyInjection;
using Volo.Abp.Identity;
using Volo.Abp.MultiTenancy;
using Volo.Abp.TenantManagement;

namespace Sozsoft.Platform.Data;

public class PlatformDbMigrationService : ITransientDependency
{
    public ILogger<PlatformDbMigrationService> Logger { get; set; }

    private readonly IDataSeeder _dataSeeder;
    private readonly IEnumerable<IPlatformDbSchemaMigrator> _dbSchemaMigrators;
    private readonly ITenantRepository _tenantRepository;
    private readonly ICurrentTenant _currentTenant;
    private readonly IConfiguration _configuration;
    private readonly IEnumerable<IFinalSeeder> _finalSeeders;
    private readonly IListFormSeedDataApplier _listFormSeedDataApplier;

    public PlatformDbMigrationService(
        IDataSeeder dataSeeder,
        IEnumerable<IPlatformDbSchemaMigrator> dbSchemaMigrators,
        ITenantRepository tenantRepository,
        ICurrentTenant currentTenant,
        IConfiguration configuration,
        IEnumerable<IFinalSeeder> finalSeeders,
        IListFormSeedDataApplier listFormSeedDataApplier)
    {
        _dataSeeder = dataSeeder;
        _dbSchemaMigrators = dbSchemaMigrators;
        _tenantRepository = tenantRepository;
        _currentTenant = currentTenant;
        _configuration = configuration;
        _finalSeeders = finalSeeders;
        _listFormSeedDataApplier = listFormSeedDataApplier;

        Logger = NullLogger<PlatformDbMigrationService>.Instance;
    }

    public async Task MigrateAsync()
    {
        var seed = _configuration.GetValue("Seed", false);
        Logger.LogInformation($"Migrating database. Seed: {seed}. Env: {Environment.GetEnvironmentVariable("DOTNET_ENVIRONMENT")}");

        ClearCache();

        var initialMigrationAdded = AddInitialMigrationIfNotExist();

        if (initialMigrationAdded)
        {
            return;
        }

        Logger.LogInformation("Started database migrations...");

        await MigrateDatabaseSchemaAsync();
        if (seed)
        {
            await SeedDataAsync();
        }

        Logger.LogInformation($"Successfully completed host database migrations.");

        var tenants = await _tenantRepository.GetListAsync(includeDetails: true);

        var migratedDatabaseSchemas = new HashSet<string>();
        foreach (var tenant in tenants)
        {
            using (_currentTenant.Change(tenant.Id))
            {
                if (tenant.ConnectionStrings.Any())
                {
                    var tenantConnectionStrings = tenant.ConnectionStrings
                        .Select(x => x.Value)
                        .ToList();

                    if (!migratedDatabaseSchemas.IsSupersetOf(tenantConnectionStrings))
                    {
                        await MigrateDatabaseSchemaAsync(tenant);

                        migratedDatabaseSchemas.AddIfNotContains(tenantConnectionStrings);
                    }
                }
                if (seed)
                {
                    await SeedDataAsync(tenant);
                }
            }

            Logger.LogInformation($"Successfully completed {tenant.Name} tenant database migrations.");
        }

        Logger.LogInformation("Successfully completed all database migrations.");

        await ExecuteFinalSeedersAsync(tenants);

        // Seed; menu, yetki ve dil metni ekler. Calisan uygulama bu arada eski halleri onbellege
        // almis olabilir (ornegin wizard'in yeni menusu); migrate sonrasinda da temizlenir.
        if (seed)
            ClearCache();

        Logger.LogInformation("You can safely end this process...");
    }

    private void ClearCache()
    {
        using var redis = ConnectionMultiplexer.Connect(_configuration["Redis:Configuration"]!);
        redis.GetDatabase().Execute("FLUSHALL");
    }

    /// <summary>
    /// Tüm host ve tenant migration/seed adımları bittikten sonra,
    /// {host|tenants/{tenantId}}/{sql|postgres}/execute klasöründeki script'lerin dosya adından
    /// türeyen procedure'lerini ilgili bağlamda çalıştırır. İlgili tenant klasörü yoksa
    /// o tenant adımı sessizce atlanır.
    /// </summary>
    private async Task ExecuteFinalSeedersAsync(List<Tenant> tenants)
    {
        if (!_finalSeeders.Any())
        {
            Logger.LogInformation("No SQL executor registered, skipping execute scripts.");
            return;
        }

        Logger.LogInformation(
            "Executing SQL scripts for host and {TenantCount} tenant(s)...",
            tenants.Count);

        using (_currentTenant.Change(null))
        {
            foreach (var executor in _finalSeeders)
            {
                Logger.LogInformation("Running SQL scripts for host...");
                await executor.ExecuteAsync();
                Logger.LogInformation("Completed SQL scripts for host.");
            }
        }

        foreach (var tenant in tenants)
        {
            using (_currentTenant.Change(tenant.Id))
            {
                foreach (var executor in _finalSeeders)
                {
                    Logger.LogInformation(
                        "Running SQL scripts for {TenantName} tenant...",
                        tenant.Name);
                    await executor.ExecuteAsync(tenant.Id);
                    Logger.LogInformation(
                        "Completed SQL scripts for {TenantName} tenant.",
                        tenant.Name);
                }
            }
        }

        Logger.LogInformation("Successfully completed all SQL scripts.");
    }

    private async Task MigrateDatabaseSchemaAsync(Tenant? tenant = null)
    {
        Logger.LogInformation(
            $"Migrating schema for {(tenant == null ? "host" : tenant.Name + " tenant")} database...");

        foreach (var migrator in _dbSchemaMigrators)
        {
            await migrator.MigrateAsync();
        }
    }

    private async Task SeedDataAsync(Tenant? tenant = null)
    {
        Logger.LogInformation($"Executing {(tenant == null ? "host" : tenant.Name + " tenant")} database seed...");

        await _dataSeeder.SeedAsync(new DataSeedContext(tenant?.Id)
            .WithProperty(IdentityDataSeedContributor.AdminEmailPropertyName, PlatformConsts.AbpIdentity.User.AdminEmailDefaultValue)
            .WithProperty(IdentityDataSeedContributor.AdminPasswordPropertyName, PlatformConsts.AbpIdentity.User.AdminPasswordDefaultValue)
            .WithProperty(IdentityDataSeedContributor.AdminUserNamePropertyName, PlatformConsts.AbpIdentity.User.AdminEmailDefaultValue)
        );

        // Veri seed dosyalari ListForm tanimlarina ve tablolara dayandigi icin butun
        // contributor'lar bittikten sonra uygulanir; ABP contributor sirasi garanti degildir.
        await _listFormSeedDataApplier.ApplyAsync(tenant?.Id);
    }

    private bool AddInitialMigrationIfNotExist()
    {
        try
        {
            if (!DbMigrationsProjectExists())
            {
                return false;
            }
        }
        catch (Exception)
        {
            return false;
        }

        try
        {
            if (!MigrationsFolderExists())
            {
                AddInitialMigration();
                return true;
            }
            else
            {
                return false;
            }
        }
        catch (Exception e)
        {
            Logger.LogWarning("Couldn't determinate if any migrations exist : " + e.Message);
            return false;
        }
    }

    private bool DbMigrationsProjectExists()
    {
        var dbMigrationsProjectFolder = GetEntityFrameworkCoreProjectFolderPath();

        return dbMigrationsProjectFolder != null;
    }

    private bool MigrationsFolderExists()
    {
        var dbMigrationsProjectFolder = GetEntityFrameworkCoreProjectFolderPath();
        return dbMigrationsProjectFolder != null && Directory.Exists(Path.Combine(dbMigrationsProjectFolder, "Migrations"));
    }

    private void AddInitialMigration()
    {
        Logger.LogInformation("Creating initial migration...");

        string argumentPrefix;
        string fileName;

        if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX) || RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
        {
            argumentPrefix = "-c";
            fileName = "/bin/bash";
        }
        else
        {
            argumentPrefix = "/C";
            fileName = "cmd.exe";
        }

        var procStartInfo = new ProcessStartInfo(fileName,
            $"{argumentPrefix} \"abp create-migration-and-run-migrator \"{GetEntityFrameworkCoreProjectFolderPath()}\"\""
        );

        try
        {
            Process.Start(procStartInfo);
        }
        catch (Exception)
        {
            throw new Exception("Couldn't run ABP CLI...");
        }
    }

    private string? GetEntityFrameworkCoreProjectFolderPath()
    {
        var slnDirectoryPath = GetSolutionDirectoryPath();

        if (slnDirectoryPath == null)
        {
            throw new Exception("Solution folder not found!");
        }

        var srcDirectoryPath = Path.Combine(slnDirectoryPath, "src");

        return Directory.GetDirectories(srcDirectoryPath)
            .FirstOrDefault(d => d.EndsWith(".EntityFrameworkCore"));
    }

    private string? GetSolutionDirectoryPath()
    {
        var currentDirectory = new DirectoryInfo(Directory.GetCurrentDirectory());

        while (currentDirectory != null && Directory.GetParent(currentDirectory.FullName) != null)
        {
            currentDirectory = Directory.GetParent(currentDirectory.FullName);

            if (currentDirectory != null && Directory.GetFiles(currentDirectory.FullName).FirstOrDefault(f => f.EndsWith(".sln")) != null)
            {
                return currentDirectory.FullName;
            }
        }

        return null;
    }
}