Example
The
following example searches for the requested buddy’s name in a data
source and, if it finds a unique entry, adds the buddy and updates
the buddy’s status information in an Application scope buddyStatus
structure. If it doesn’t find the name, it declines the buddy. If
there are multiple entries for the buddy name in the database, it
tells the gateway not to respond. It logs all actions.
<cffunction name="onAddBuddyRequest">
<cfargument name="CFEvent" type="struct" required="YES">
<cfquery name="buddysearch" datasource="cfdocexamples">
SELECT IM_ID
FROM Employees
WHERE IM_ID = '#CFEvent.Data.SENDER#'
</cfquery>
<cflock scope="APPLICATION" timeout="10" type="EXCLUSIVE">
<cfscript>
// If the name is in the DB once, accept; if it is missing, decline.
// If it is in the DB multiple times, take no action.
if (buddysearch.RecordCount IS 0) {
action="decline";
reason="Invalid ID";
}
else if (buddysearch.RecordCount IS 1) {
action="accept";
reason="Valid ID";
//Add the buddy to the buddy status structure only if accepted.
if (NOT StructKeyExists(Application,
"buddyStatus")) {
Application.buddyStatus=StructNew();
}
if (NOT StructKeyExists(Application.buddyStatus,
CFEvent.Data.SENDER)) {
Application.buddyStatus[#CFEvent.Data.SENDER#]=StructNew();
}
Application.buddyStatus[#CFEvent.Data.SENDER#].status=
"Accepted Buddy Request";
Application.buddyStatus[#CFEvent.Data.SENDER#].timeStamp=
CFEvent.Data.TIMESTAMP;
Application.buddyStatus[#CFEvent.Data.SENDER#].message=
CFEvent.Data.MESSAGE;
}
else {
action="noact";
}
</cfscript>
</cflock>
<!--- Log the request and decision information. --->
<cflog file="#CFEvent.GatewayID#Status"
text="onAddBuddyRequest; SENDER: #CFEvent.Data.SENDER# MESSAGE:
#CFEvent.Data.MESSAGE# TIMESTAMP: #CFEvent.Data.TIMESTAMP# ACTION: #action#">
<!--- Return the action decision. --->
<cfset retValue = structNew()>
<cfset retValue.command = action>
<cfset retValue.BuddyID = CFEvent.DATA.SENDER>
<cfset retValue.Reason = reason>
<cfreturn retValue>
</cffunction>
