datetime and retain recording interfaces

Author: Dhruv Tyagi

CMakeLists.txt

@@ -46,6 +46,7 @@ rosidl_generate_interfaces(${PROJECT_NAME}
   "msg/HttpRequest.msg"
   "msg/HttpResponse.msg"
   "msg/MapIdNamePair.msg"
+  "msg/DateTime.msg"
   "srv/FetchRouteNode.srv"
   "srv/ModifyRouteNode.srv"
   "srv/ModifyRouteEdge.srv"
@@ -67,6 +68,7 @@ rosidl_generate_interfaces(${PROJECT_NAME}
   "srv/StopBagRetention.srv"
   "srv/ListContinuousRecordings.srv"
   "srv/DeleteContinuousRecording.srv"
+  "srv/RetainRecording.srv"
   "action/GenerateOfflineMap.action"
   DEPENDENCIES ${dependencies}
 )

msg/DateTime.msg

@@ -0,0 +1,9 @@
+# Date
+uint16 year
+uint8 month
+uint8 day
+
+# Time (UTC)
+uint8 hour
+uint8 minute
+uint8 second

srv/RetainRecording.srv

@@ -0,0 +1,19 @@
+## Request
+
+# Start time for retention
+polymath_msgs/DateTime start_time
+
+# End time for retention
+polymath_msgs/DateTime end_time
+
+# Session suffix (optional, recommended)
+string session_suffix
+
+---
+## Response
+
+# Indicate successful run of service
+bool success
+
+# Error messages
+string error