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The template uses Apache Velocity to render all tokenized content. The following variables are available for use in your template:

Variable	Description
`$alert.getAlertDefinition()`
`$alert.getAlertText()`
`$alert.getAlertName()`
`$alert.getAlertState()`
`$alert.getServiceName()`
`$alert.hasComponentName()`
`$alert.getComponentName()`
`$alert.hasHostName()`
`$alert.getHostName()`
`$ambari.getServerUrl()`	The Ambari Server URL.
`$ambari.getServerVersion()`	The Ambari Server version.
`$ambari.getServerHostName()`	The Ambari Server hostname.
`$dispatch.getTargetName()`	The notification target name.
`$dispatch.getTargetDescription()`	The notification target description.
`$summary.getAlerts(service,alertState)`	A list of all alerts for a given service or alert state (OK\|WARNING\|CRITICAL\|UNKNOWN).
`$summary.getServicesByAlertState(alertState)`	A list of all services for a given alert state (OK\|WARNING\|CRITICAL\|UNKNOWN).
`$summary.getServices()`	A list of all services.
`$summary.getCriticalCount()`	The CRITICAL alert count.
`$summary.getOkCount()`	The OK alert count.
`$summary.getTotalCount()`	The total alert count.
`$summary.getUnknownCount()`	The UNKNOWN alert count.
`$summary.getWarningCount()`	The WARNING alert count.

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