Optimal Decomposition of Service Level Objectives into Policy Assertions

Algorithm 3

Policy attachment mechanisms.

<!- - External mechanism- ->

<PolicyAttachment>

 <AppliesTo>

  <EndpointReference>

   <wsdl:service name="SettlementService”>

  </EndpointReference>

 </AppliesTo>

 <Policy ReferenceURI="policies#PerformancePolicy" utility="float">

  <preCondition>

   <exchange:BusinessHours/>

  </preCondition>

 </PolicyReference>

</PolicyAttachment>

<!- - Embedded mechanism- ->

<wsdl:service name="SettlementService”>

 <PolicyReference URI="policies#PerformancePolicy" utility="float">

  <preCondition>

   <exchange:BusinessHours/>

  </preCondition>

 </PolicyReference>

</wsdl:service>