handle --wait option directly from executable (#1701)

etc/agent.cfg

@@ -30,8 +30,6 @@
 
 # maximum initial delay before first target, in seconds
 delaytime = 3600
-# maximum delay between each targets, in seconds
-wait =
 # do not contact the target before next scheduled time
 lazy = 0
 

fusioninventory-agent

@@ -104,6 +104,11 @@ if ($options->{'list-tasks'}) {
     exit 0;
 }
 
+if ($options->{wait}) {
+    my $time = int rand($options->{wait});
+    sleep $time;
+}
+
 eval {
     $agent->init(options => $options);
     $agent->run();
@@ -134,7 +139,6 @@ B<fusioninventory-agent> [options] [--server server|--local directory|--sdout]
 
   Target scheduling options
     --delaytime=DURATION        maximum initial delay before first target, in seconds (3600)
-    -w --wait=DURATION          maximum delay between each target, in seconds
     --lazy                      do not contact the target before next scheduled time
 
   Task selection options
@@ -180,6 +184,7 @@ B<fusioninventory-agent> [options] [--server server|--local directory|--sdout]
     --conf-file=FILE            configuration file
 
   Execution mode options
+    -w --wait=DURATION          maximum delay before execution, in seconds
     -d --daemon                 run the agent as a daemon (false)
     --no-fork                   don't fork in background (false)
     --debug                     debug mode (false)
@@ -330,11 +335,6 @@ between LIMIT / 2 and LIMIT seconds. This setting is ignored for server targets
 after the initial contact, in favor of server-specified parameter
 (PROLOG_FREQ).
 
-=item B<-w> I<LIMIT>, B<--wait>=I<LIMIT>
-
-Set a delay between each targets, whose value is computed randomly between 0
-and LIMIT seconds.
-
 =item B<--lazy>
 
 Do not contact the target before next scheduled time.
@@ -539,6 +539,12 @@ none: don't read any configuration
 
 =over
 
+=item B<-w> I<LIMIT>, B<--wait>=I<LIMIT>
+
+Wait a random delay whose value is computed randomly between 0 and LIMIT
+seconds, before execution. This is useful when execution is triggered from some
+kind of system scheduling on multiple clients, to spread the server load.
+
 =item B<-d>, B<--daemon>
 
 Run the agent as a daemon.

lib/FusionInventory/Agent/Config.pm

@@ -40,7 +40,6 @@ my $default = {
     'tag'                     => undef,
     'timeout'                 => undef,
     'user'                    => undef,
-    'wait'                    => undef,
     # deprecated options
     'no-ocsdeploy'            => undef,
     'no-inventory'            => undef,

lib/FusionInventory/Agent/Scheduler.pm

@@ -12,7 +12,6 @@ sub new {
         logger     => $params{logger} ||
                       FusionInventory::Agent::Logger->new(),
         lazy       => $params{lazy},
-        wait       => $params{wait},
         background => $params{background},
         targets    => []
     };
@@ -62,17 +61,6 @@ sub getNextTarget {
         }
     }
 
-    if ($self->{wait}) {
-        # return next target after waiting for a random delay
-        my $time = int rand($self->{wait});
-        $logger->info(
-            "[scheduler] sleeping for $time second(s) because of the wait " .
-            "parameter"
-        );
-        sleep $time;
-        return $target;
-    }
-
     # return next target immediatly
     return $target;
 }
@@ -112,11 +100,6 @@ the logger object to use (default: a new stderr logger)
 a flag to ensure targets whose next scheduled execution date has not been
 reached yet will get ignored. Only useful when I<background> flag is not set.
 
-=item I<wait>
-
-a number of second to wait before returning each target. Only useful when
-I<background> flag is not set.
-
 =item I<background>
 
 a flag to set if the agent is running as a resident program, aka a daemon in