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How to Create an Override for a Rule

System Center

Updated: May 22, 2009

Applies To: Operations Manager 2007 R2, Operations Manager 2007 SP1, System Center Operations Manager 2007

You can create an override for a property or configuration parameter for a rule. A property override changes the default value of a rule property, and a configuration override changes the default value of a custom configuration setting for a rule. If you want to create an override for a rule, use the ManagementPackRulePropertyOverride or ManagementPackRuleConfigurationOverride class. These classes are derived from the ManagementPackRuleOverride class.

Only the Enabled property can be overridden for rules. To figure out which parameters can be overridden, you must look at the definition of the rule in the Management Pack that defines the rule. All the parameters that can be overridden are defined in the OverrideableParameters element of the rule. You can also call the GetOverrideableParameters method to get the list of parameters programmatically.

The following example creates an override for the Enabled property of a rule.

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Text;
using Microsoft.EnterpriseManagement;
using Microsoft.EnterpriseManagement.Administration;
using Microsoft.EnterpriseManagement.Common;
using Microsoft.EnterpriseManagement.Configuration;
using Microsoft.EnterpriseManagement.Monitoring;

namespace SDKSamples
{
    class Program
    {
        //---------------------------------------------------------------------
        static void Main(string[] args)
        {
            ManagementGroup                     mg;
            ManagementPack                      mp;
            MonitoringClassCriteria             classCriteria;
            MonitoringClass                     monitoringClass;
            MonitoringRuleCriteria              ruleCriteria;
            MonitoringRule                      rule;
            ManagementPackRulePropertyOverride  ruleOverride;

            mg = new ManagementGroup("localhost");

            mp = mg.GetManagementPacks("OverrideTestMP")[0];

            classCriteria = new MonitoringClassCriteria("Name='Microsoft.SQLServer.2005.Database'");

            monitoringClass = mg.GetMonitoringClasses(classCriteria)[0];

            ruleCriteria = new MonitoringRuleCriteria("DisplayName='Collect Database Free Space (%)'");

            rule = monitoringClass.GetMonitoringRules(ruleCriteria)[0];

            ruleOverride = new ManagementPackRulePropertyOverride(mp, "SampleRuleOverride");

            ruleOverride.Rule           = rule;
            ruleOverride.Property       = ManagementPackWorkflowProperty.Enabled;
            ruleOverride.Value          = "false";
            ruleOverride.Context        = monitoringClass;
            ruleOverride.DisplayName    = "SampleRuleOverride";

            mp.Verify();
            
            //Save the changes into the management pack.
            mp.AcceptChanges();
        }        
    }
}

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