Add Quartz StartupDelay option

framework/src/Volo.Abp.Quartz/Volo/Abp/Quartz/AbpQuartzModule.cs

@@ -1,4 +1,5 @@
 using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Options;
 using Quartz;
 using Quartz.Impl;
 using Quartz.Spi;
@@ -20,9 +21,15 @@ public override void ConfigureServices(ServiceConfigurationContext context)
 
         public override void OnApplicationInitialization(ApplicationInitializationContext context)
         {
+            var options = context.ServiceProvider.GetRequiredService<IOptions<AbpQuartzPreOptions>>().Value;
+
             _scheduler = context.ServiceProvider.GetService<IScheduler>();
             _scheduler.JobFactory = context.ServiceProvider.GetService<IJobFactory>();
-            _scheduler.Start();
+
+            if (options.StartDelay != null && options.StartDelay.Ticks > 0)
+                _scheduler.StartDelayed(options.StartDelay);
+            else
+                _scheduler.Start();
         }
 
         public override void OnApplicationShutdown(ApplicationShutdownContext context)

framework/src/Volo.Abp.Quartz/Volo/Abp/Quartz/AbpQuartzPreOptions.cs

@@ -1,14 +1,23 @@
-using System.Collections.Specialized;
+using System;
+using System.Collections.Specialized;
 
 namespace Volo.Abp.Quartz
 {
     public class AbpQuartzPreOptions
     {
+        /// <summary>
+        /// The quartz configuration. Available properties can be found within Quartz.Impl.StdSchedulerFactory.
+        /// </summary>
         public NameValueCollection Properties { get; set; }
+        /// <summary>
+        /// How long Quartz should wait before starting. Default: 0.
+        /// </summary>
+        public TimeSpan StartDelay { get; set; }
 
         public AbpQuartzPreOptions()
         {
             Properties = new NameValueCollection();
+            StartDelay = new TimeSpan(0);
         }
     }
 }