make the bulk export retention time configurable (#917)

* #710 make the bulk export retention time configurable

* #710 spotless fix

---------

Co-authored-by: Steve Swinsburg <steve.swinsburg@digitalhealth.gov.au>

src/main/java/ca/uhn/fhir/jpa/starter/AppProperties.java

@@ -131,6 +131,8 @@ public class AppProperties {
 	private Integer expunge_thread_count = null;
 	private Elasticsearch elasticsearch = null;
 
+	private Integer bulk_export_file_retention_period_hours = 2;
+
 	public List<String> getCustomInterceptorClasses() {
 		return custom_interceptor_classes;
 	}
@@ -856,6 +858,14 @@ public class AppProperties {
 		this.elasticsearch = elasticsearch;
 	}
 
+	public Integer getBulk_export_file_retention_period_hours() {
+		return bulk_export_file_retention_period_hours;
+	}
+
+	public void setBulk_export_file_retention_period_hours(Integer bulk_export_file_retention_period_hours) {
+		this.bulk_export_file_retention_period_hours = bulk_export_file_retention_period_hours;
+	}
+
 	public static class Cors {
 		private Boolean allow_Credentials = true;
 		private List<String> allowed_origin = List.of("*");

src/main/java/ca/uhn/fhir/jpa/starter/common/FhirServerConfigCommon.java

@@ -302,6 +302,12 @@ public class FhirServerConfigCommon {
 			jpaStorageSettings.setHSearchIndexPrefix(indexPrefix != null ? indexPrefix : "");
 		}
 
+		// Configure the bulk export file retention period
+		if (appProperties.getBulk_export_file_retention_period_hours() != null) {
+			jpaStorageSettings.setBulkExportFileRetentionPeriodHours(
+					appProperties.getBulk_export_file_retention_period_hours());
+		}
+
 		return jpaStorageSettings;
 	}