Class Reference
Cache for UNIX 2018.1.3
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persistent class %Monitor.Alert extends %Persistent, %CSP.Page

This class allows user applications to generate an alert using one of the supported external monitoring protocols. See the External() class method for details.

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Parameters Properties Methods Queries Indices ForeignKeys Triggers
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Summary

Methods
%AddToSaveSet %AddToSyncSet %BMEBuilt %CheckConstraints
%CheckConstraintsForExtent %ClassIsLatestVersion %ClassName %ComposeOid
%ConstructClone %Delete %DeleteExtent %DeleteId
%DispatchClassMethod %DispatchGetModified %DispatchGetProperty %DispatchMethod
%DispatchSetModified %DispatchSetMultidimProperty %DispatchSetProperty %Exists
%ExistsId %Extends %GUID %GUIDSet
%GetLock %GetParameter %GetSwizzleObject %Id
%InsertBatch %IsA %IsModified %IsNull
%KillExtent %KillExtentData %LoadFromMemory %LockExtent
%LockId %New %NormalizeObject %ObjectIsNull
%ObjectModified %Oid %OnBeforeAddToSync %OnDetermineClass
%Open %OpenId %OriginalNamespace %PackageName
%PhysicalAddress %PurgeIndices %Reload %RemoveFromSaveSet
%ResolveConcurrencyConflict %RollBack %Save %SaveDirect
%SaveIndices %SerializeObject %SetModified %SortBegin
%SortEnd %SyncObjectIn %SyncTransport %UnlockExtent
%UnlockId %ValidateIndices %ValidateObject ConvertParameter
Decrypt Encrypt EscapeHTML EscapeURL
External HyperEventCall HyperEventHead Include
InsertHiddenField InsertHiddenFields IsPrivate Link
OnHTTPHeader OnPage OnPageError OnPostHTTP
OnPostHyperEvent OnPreHTTP OnPreHyperEvent Page
QuoteJS RewriteURL ShowError StartTimer
StopTimer ThrowError UnescapeHTML UnescapeURL


Methods

• classmethod External(type As %String = "", appname As %String = "", severity As %Integer = 0, msg As %String = "") as %Status
This class method allows a Cache application to send an alert using an external monitoring or management interface, currently either SNMP or WMI. This call may be used within the Alert Evaluation Method to forward alerts generated by the Cache Monitor, or from anywhere within the application itself to simply create an SNMP Trap or WMI Event.

The parameters used are:

type = either 'SNMP' or 'WMI' to indicate how to send the alert

appname = a brief string (MAXLEN=20) to identify the source or application creating the alert

severity = a severity code where 0=info, 1=warning, 2=severe, 3=fatal

msg = a text message (MAXLEN=1024) which describes the problem or event

For SNMP, the alert is sent using the cacheAppAlert trap, with each of the parameters attached as auxiliary objects (see the ISC-CACHE.MIB). For WMI, a Cache_Event is constructed in the same way as other Cache SNMP system traps. The severity code is included as the Severity property, and the 'appname' and 'msg' parameters are appended with a dash separator in the AdditionalInfo property.



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