Add DisallowConcurrentExecution to JobTriggerAttribute

Allow configuration of job concurrency via JobTriggerAttribute.
Constructor now accepts disallowConcurrentExecution parameter.
Job registration uses this setting to control concurrent execution.

Author: bvdcode

Sources/EasyExtensions.Quartz/Attributes/JobTriggerAttribute.cs

@@ -29,6 +29,14 @@ public class JobTriggerAttribute : Attribute
         /// </summary>
         public string? CronSchedule { get; }
 
+        /// <summary>
+        /// Gets or sets a value indicating whether concurrent execution of this operation is disallowed.
+        /// </summary>
+        /// <remarks>When set to <see langword="true"/>, attempts to execute the operation concurrently
+        /// may be prevented, depending on the implementation. This can be used to ensure that only one instance of the
+        /// operation runs at a time.</remarks>
+        public bool DisallowConcurrentExecution { get; set; } = true;
+
         /// <summary>
         /// Create a new instance of <see cref="JobTriggerAttribute"/>.
         /// </summary>
@@ -38,10 +46,11 @@ public class JobTriggerAttribute : Attribute
         /// <param name="seconds"> Interval: Seconds. </param>
         /// <param name="startNow"> Start now. </param>
         /// <param name="repeatForever"> Interval: Repeat forever. </param>
+        /// <param name="disallowConcurrentExecution"> Indicates whether concurrent execution of this operation is disallowed. </param>
         /// <param name="cronSchedule"> Cron schedule, if specified, it will override the interval. <br/>
         /// See <see href="https://www.quartz-scheduler.org/documentation/quartz-2.3.0/tutorials/crontrigger.html">Quartz CronTrigger Documentation</see> for more information. </param>
         public JobTriggerAttribute(int days = 0, int hours = 0, int minutes = 0, int seconds = 0,
-            bool startNow = true, bool repeatForever = true, string? cronSchedule = "")
+            bool startNow = true, bool repeatForever = true, string? cronSchedule = "", bool disallowConcurrentExecution = true)
         {
             TimeSpan interval = new TimeSpan(days, hours, minutes, seconds);
             if (interval <= TimeSpan.Zero && string.IsNullOrWhiteSpace(cronSchedule))
@@ -52,6 +61,7 @@ public JobTriggerAttribute(int days = 0, int hours = 0, int minutes = 0, int sec
             CronSchedule = cronSchedule;
             RepeatForever = repeatForever;
             Interval = new TimeSpan(days, hours, minutes, seconds);
+            DisallowConcurrentExecution = disallowConcurrentExecution;
         }
     }
 }

Sources/EasyExtensions.Quartz/Extensions/ServiceCollectionExtensions.cs

@@ -67,7 +67,7 @@ private static void SetupQuartz(IServiceCollectionQuartzConfigurator configurato
                 var jobKey = new JobKey(job.Name);
                 configurator.AddJob(job, jobKey, x => x
                     .WithIdentity(jobKey)
-                    .DisallowConcurrentExecution());
+                    .DisallowConcurrentExecution(concurrentExecutionDisallowed: jobTriggerAttribute.DisallowConcurrentExecution));
                 configurator.AddTrigger(opts =>
                 {
                     opts.ForJob(jobKey)