Interfaces for Storage Manager (#12)

* Retention management services

* List continuous recordings service

* Delete recording interface

* datetime and retain recording interfaces

* Status message

* Storage status

* Removed stop retention srv

* Changed to builtin time

* Removed custom date time

* status to summary

* Renamed storage services

* docstrings summary

* cmake fix

* Removed status

---------

Co-authored-by: Dhruv Tyagi <dhruv@polymathrobotics.com>

Author: dhruvtya

CMakeLists.txt

@@ -49,6 +49,7 @@ rosidl_generate_interfaces(${PROJECT_NAME}
   "msg/HttpResponse.msg"
   "msg/MapIdNamePair.msg"
   "msg/GeoBoundary.msg"
+  "msg/StorageSummary.msg"
   "srv/FetchRouteNode.srv"
   "srv/ModifyRouteNode.srv"
   "srv/ModifyRouteEdge.srv"
@@ -66,6 +67,10 @@ rosidl_generate_interfaces(${PROJECT_NAME}
   "srv/ListBagRecordings.srv"
   "srv/DeleteMap.srv"
   "srv/ListMaps.srv"
+  "srv/StorageStartSession.srv"
+  "srv/StorageStopSession.srv"
+  "srv/StorageRemoveSession.srv"
+  "srv/StorageSaveSession.srv"
   "action/GenerateOfflineMap.action"
   DEPENDENCIES ${dependencies}
 )

msg/StorageSummary.msg

@@ -0,0 +1,11 @@
+# Based on storage configuration, is storage available for recording?
+bool is_storage_available
+
+# Size of bags directory in bytes
+uint64 bags_dir_size_bytes
+
+# Available disk space in bytes
+uint64 available_disk_space_bytes
+
+# When was the summary updated last
+builtin_interfaces/Time last_updated

srv/StorageRemoveSession.srv

@@ -0,0 +1,13 @@
+## Request
+
+# File/session name
+string name
+
+---
+## Response
+
+# Indicate successful run of service
+bool success
+
+# Error messages
+string error

srv/StorageSaveSession.srv

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

srv/StorageStartSession.srv

@@ -0,0 +1,13 @@
+## Request
+
+# Session suffix (optional, recommended)
+string session_suffix
+
+---
+## Response
+
+# Indicate successful run of service
+bool success
+
+# Error messages
+string error

srv/StorageStopSession.srv

@@ -0,0 +1,10 @@
+## Request
+
+---
+## Response
+
+# Indicate successful run of service
+bool success
+
+# Error messages
+string error