[PM-6938] Allow certain database operations to be skipped (#3914)

* Centralize database migration logic

* Clean up unused usings

* Prizatize

* Remove verbose flag from Docker invocation

* Allow certain database operations to be skipped

* Readonly

src/Admin/Jobs/JobsHostedService.cs

@@ -76,14 +76,18 @@ public class JobsHostedService : BaseJobsHostedService
         {
             new Tuple<Type, ITrigger>(typeof(DeleteSendsJob), everyFiveMinutesTrigger),
             new Tuple<Type, ITrigger>(typeof(DatabaseExpiredGrantsJob), everyFridayAt10pmTrigger),
-            new Tuple<Type, ITrigger>(typeof(DatabaseUpdateStatisticsJob), everySaturdayAtMidnightTrigger),
-            new Tuple<Type, ITrigger>(typeof(DatabaseRebuildlIndexesJob), everySundayAtMidnightTrigger),
             new Tuple<Type, ITrigger>(typeof(DeleteCiphersJob), everyDayAtMidnightUtc),
             new Tuple<Type, ITrigger>(typeof(DatabaseExpiredSponsorshipsJob), everyMondayAtMidnightTrigger),
             new Tuple<Type, ITrigger>(typeof(DeleteAuthRequestsJob), everyFifteenMinutesTrigger),
             new Tuple<Type, ITrigger>(typeof(DeleteUnverifiedOrganizationDomainsJob), everyDayAtTwoAmUtcTrigger),
         };
 
+        if (!(_globalSettings.SqlServer?.DisableDatabaseMaintenanceJobs ?? false))
+        {
+            jobs.Add(new Tuple<Type, ITrigger>(typeof(DatabaseUpdateStatisticsJob), everySaturdayAtMidnightTrigger));
+            jobs.Add(new Tuple<Type, ITrigger>(typeof(DatabaseRebuildlIndexesJob), everySundayAtMidnightTrigger));
+        }
+
         if (!_globalSettings.SelfHosted)
         {
             jobs.Add(new Tuple<Type, ITrigger>(typeof(AliveJob), everyTopOfTheHourTrigger));

src/Core/Settings/GlobalSettings.cs

@@ -221,6 +221,8 @@ public class GlobalSettings : IGlobalSettings
         private string _connectionString;
         private string _readOnlyConnectionString;
         private string _jobSchedulerConnectionString;
+        public bool SkipDatabasePreparation { get; set; }
+        public bool DisableDatabaseMaintenanceJobs { get; set; }
 
         public string ConnectionString
         {

util/Migrator/DbMigrator.cs

@@ -13,11 +13,14 @@ public class DbMigrator
 {
     private readonly string _connectionString;
     private readonly ILogger<DbMigrator> _logger;
+    private readonly bool _skipDatabasePreparation;
 
-    public DbMigrator(string connectionString, ILogger<DbMigrator> logger = null)
+    public DbMigrator(string connectionString, ILogger<DbMigrator> logger = null,
+        bool skipDatabasePreparation = false)
     {
         _connectionString = connectionString;
         _logger = logger ?? CreateLogger();
+        _skipDatabasePreparation = skipDatabasePreparation;
     }
 
     public bool MigrateMsSqlDatabaseWithRetries(bool enableLogging = true,
@@ -31,7 +34,10 @@ public class DbMigrator
         {
             try
             {
-                PrepareDatabase(cancellationToken);
+                if (!_skipDatabasePreparation)
+                {
+                    PrepareDatabase(cancellationToken);
+                }
 
                 var success = MigrateDatabase(enableLogging, repeatable, folderName, dryRun, cancellationToken);
                 return success;

util/Migrator/SqlServerDbMigrator.cs

@@ -10,7 +10,8 @@ public class SqlServerDbMigrator : IDbMigrator
 
     public SqlServerDbMigrator(GlobalSettings globalSettings, ILogger<DbMigrator> logger)
     {
-        _migrator = new DbMigrator(globalSettings.SqlServer.ConnectionString, logger);
+        _migrator = new DbMigrator(globalSettings.SqlServer.ConnectionString, logger,
+            globalSettings.SqlServer.SkipDatabasePreparation);
     }
 
     public bool MigrateDatabase(bool enableLogging = true,