core: add new RandomSec= setting for time units

This allows configuration of a random time on top of the elapse events,
in order to spread time events in a network evenly across a range.

1 files changed, 17 insertions, 0 deletions

diff --git a/src/shared/bus-util.c b/src/shared/bus-util.c
index dab4934901..38281045b8 100644
--- a/src/shared/bus-util.c
+++ b/src/shared/bus-util.c
@@ -1442,6 +1442,23 @@ int bus_append_unit_property_assignment(sd_bus_message *m, const char *assignmen
                         return bus_log_create_error(r);
 
                 return 0;
+
+        } else if (streq(field, "RandomSec")) {
+                usec_t t;
+
+                r = parse_sec(eq, &t);
+                if (r < 0)
+                        return log_error_errno(r, "Failed to parse RandomSec= parameter: %s", eq);
+
+                r = sd_bus_message_append_basic(m, SD_BUS_TYPE_STRING, "RandomUSec");
+                if (r < 0)
+                        return bus_log_create_error(r);
+
+                r = sd_bus_message_append(m, "v", "t", t);
+                if (r < 0)
+                        return bus_log_create_error(r);
+
+                return 0;
         }
 
         r = sd_bus_message_append_basic(m, SD_BUS_TYPE_STRING, field);