Feature #1739: Drivers inform that the VM_POLL info is included, making things easier for the core when 0 vms are found

src/im/InformationManagerDriver.cc

@@ -91,6 +91,8 @@ void InformationManagerDriver::protocol(
 
     if ( action == "MONITOR" )
     {
+        bool vm_poll;
+
         host = hpool->get(id,true);
 
         if ( host == 0 )
@@ -145,6 +147,9 @@ void InformationManagerDriver::protocol(
 
         delete hinfo;
 
+        host->get_template_attribute("VM_POLL", vm_poll);
+
+        host->remove_template_attribute("VM_POLL");
         host->remove_template_attribute("VM");
 
         host->touch(true);
@@ -187,10 +192,7 @@ void InformationManagerDriver::protocol(
             delete *it;
         }
 
-        // TODO Some drivers do not return info about the VMs, but we should
-        // have a better way to check that. This will be true when no VMs are
-        // reported
-        if (!vm_att.empty())
+        if (vm_poll)
         {
             for (set<int>::iterator it = vm_ids.begin(); it != vm_ids.end(); it++)
             {

src/im_mad/remotes/vmware.d/vmware.rb

@@ -101,6 +101,8 @@ def get_vm_info(host, vm)
 end
 
 def get_all_vm_info(host, vms)
+    puts "VM_POLL=YES"
+
     vms.each do |vm|
         info=get_vm_info(host, vm)
 
@@ -111,7 +113,7 @@ def get_all_vm_info(host, vms)
 
         puts "VM=["
         puts "  ID=#{number},"
-        puts "  DEPLOY_ID=#{vm},\n"
+        puts "  DEPLOY_ID=#{vm},"
         puts "  POLL=\"#{info}\" ]"
     end
 end

src/vmm_mad/remotes/poll_ganglia.rb

@@ -113,6 +113,8 @@ if !ALL
 
     puts info_string(dom_info)
 else
+    puts "VM_POLL=YES"
+
     doms_info.each do |name, data|
         puts vm_info(name, data)
     end

src/vmm_mad/remotes/poll_xen_kvm.rb

@@ -346,6 +346,8 @@ end
 def print_all_vm_template(hypervisor)
     vms=hypervisor.get_all_vm_info
 
+    puts "VM_POLL=YES"
+
     vms.each do |name, data|
         number = -1