6.3.3 Services List 

Having defined the SLA, a services list for the proxy to download was created. The service 

files indicates to the proxy what services it should retrieve SLAs for. For the case study, the 

only service listed was the Yahoo Mail service, which was assigned a service ID of 100 and 

a contract ID of 1.  

Table 13: 

Service File Specifying the Yahoo Mail service

6.3.4 SLA and Services List Deployment 

Once the SLA and services list was created, they were placed in a subdirectory of the Web 

server. The respective files were named 

100 1.xml

 and 

services.xml

. First the proxy retrieves 

the services file and parses the xml to determine what services it should have SLAs for. For 

each service listed that the proxy does not have an SLA for already, it will retrieve a file with 

a naming convention of 

serviceID

contractID

.xml, serviceID and contractID being extracted 

from the service and contract identifier in the service list.

6.3.5 Proxy Initialisation 

The proxy was configured to connect to the local Web server for the services list and SLAs. 

Once the proxy was initialised it connected to the Web server and downloaded the services 

a

a

e