resolve #1030

src/AzureIoTHub.Portal.Infrastructure/ConfigHandlerBase.cs

@@ -39,6 +39,8 @@ internal abstract class ConfigHandlerBase : ConfigHandler
         internal const string MetricExporterRefreshIntervalKey = "Metrics:ExporterRefreshIntervalInSeconds";
         internal const string MetricLoaderRefreshIntervalKey = "Metrics:LoaderRefreshIntervalInMinutes";
 
+        internal const string SyncDevicesJobRefreshIntervalKey = "Job:SyncDeviceJobRefreshIntervalInSeconds";
+
         internal const string IdeasEnabledKey = "Ideas:Enabled";
         internal const string IdeasUrlKey = "Ideas:Url";
         internal const string IdeasAuthenticationHeaderKey = "Ideas:Authentication:Header";

src/AzureIoTHub.Portal.Infrastructure/DevelopmentConfigHandler.cs

@@ -16,6 +16,8 @@ internal DevelopmentConfigHandler(IConfiguration config)
 
         public override string PortalName => this.config[PortalNameKey];
 
+        public override int SyncDevicesJobRefreshIntervalInSeconds => this.config.GetValue(SyncDevicesJobRefreshIntervalKey, 300);
+
         public override int MetricExporterRefreshIntervalInSeconds => this.config.GetValue(MetricExporterRefreshIntervalKey, 30);
 
         public override int MetricLoaderRefreshIntervalInMinutes => this.config.GetValue(MetricLoaderRefreshIntervalKey, 10);