Elements

The probe breaks event data down into tokens and parses them into elements. Elements are used to assign values to ObjectServer fields; the field values contain the event details in a form that the ObjectServer understands.

The following table describes the elements that the probe generates. Not all the elements described are generated for each event. The elements that the probe generates depend on the event type.

Table 1. Elements
Element name	Element description
`$Category`	This element indicates the category type.
`$Endpoint`	This element indicates the endpoint.
`$InstanceId`	This element displays the Instance ID, a unique identifier for an instance of the probe
`$Level`	This element indicates the message level of the fault. The level can take one of the following values: `0: SYS_EMERG` `1: SYS_ALERT` `2: SYS_CRIT` `3: SYS_ERR` `4: SYS_WARN` `5: SYS_NOTICE` `6: SYS_INFO`
`$LogMessage`	This element displays the event log message transformed from `$Xmlmessage`. The transformation is performed by the file specified by the TransformerFile property.
`$NodeType`	This element indicates the node type.
`$MessageTS`	This element displays the event message timestamp.
`$Messagetype`	This element indicates the event message type.
`$ModuleId`	This element displays the module ID.
`$Source`	This element indicates the event source.
`$SequenceNum`	This element displays the sequence number.
`$Type`	This element displays the fault type raised by the system. The fault can be one of the following types: `0: INVALID` `1: SYSTEM` `2: REQUEST` `3: ESPONSE` `4: TRACE` `5: BUFFER` `6: UVE` `7: OBJECT` `8: FLOW` `9: TRACE_OBJECT` `10: SYSLOG` `11: ALARM`
`$TransformerName`	This element displays the Transformer Name.
`$Xmlmessage`	This element displays event log messages from the device under Contrail's system monitoring.