org.apache.ambari.server.state.alert

Class AlertHelper

java.lang.Object

org.apache.ambari.server.state.alert.AlertHelper

public class AlertHelper
extends Object

Constructor Summary

Constructors

Constructor and Description
AlertHelper()

Method Summary

Modifier and Type	Method and Description
void	addStaleAlerts(Long hostId, List<StaleAlert> staleAlertsDefinitionId) Saves stale alerts for specified host.
void	clearStaleAlert(Long definitionId) Removes specified stale alert from specified host.
void	clearStaleAlert(Long hostId, Long definitionId) Removes specified stale alert from specified host.
void	clearStaleAlerts(Long hostId) Removes all stale alerts for specified host.
List<Long>	getHostIdsByDefinitionId(Long definitionId) Retrieves all host ids containing specified definition id.
Map<Long,Long>	getStaleAlerts(Long hostId) Retrieves stale alerts for specified host.
int	getThresholdValue(Object value, int defaultValue) Converts the given value to an integer safely.
int	getWaitFactorMultiplier(AlertDefinition definition) Gets the wait factor multiplier off of the definition, returning INTERVAL_WAIT_FACTOR_DEFAULT if not specified.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AlertHelper

public AlertHelper()

Method Detail

getWaitFactorMultiplier

public int getWaitFactorMultiplier(AlertDefinition definition)

Gets the wait factor multiplier off of the definition, returning INTERVAL_WAIT_FACTOR_DEFAULT if not specified. This will look for STALE_INTERVAL_MULTIPLIER_PARAM_KEY in the definition parameters. The value returned from this method will be guaranteed to be in the range of 2 to 10.

Parameters:

definition - the definition to read

Returns:

the wait factor interval multiplier

getThresholdValue

public int getThresholdValue(Object value,
                             int defaultValue)

Converts the given value to an integer safely.

Parameters:

value -

defaultValue -

Returns:

addStaleAlerts

public void addStaleAlerts(Long hostId,
                           List<StaleAlert> staleAlertsDefinitionId)

Saves stale alerts for specified host.

Parameters:

hostId - host id

staleAlertsDefinitionId - list of stale alerts

getStaleAlerts

public Map<Long,Long> getStaleAlerts(Long hostId)

Retrieves stale alerts for specified host.

Parameters:

hostId - host id

Returns:

clearStaleAlerts

public void clearStaleAlerts(Long hostId)

Removes all stale alerts for specified host.

Parameters:

hostId - host id

clearStaleAlert

public void clearStaleAlert(Long hostId,
                            Long definitionId)

Removes specified stale alert from specified host.

Parameters:

hostId - host id.

definitionId - alert definition id.

clearStaleAlert

public void clearStaleAlert(Long definitionId)

Removes specified stale alert from specified host.

Parameters:

definitionId - alert definition id.

getHostIdsByDefinitionId

public List<Long> getHostIdsByDefinitionId(Long definitionId)

Retrieves all host ids containing specified definition id.

Parameters:

definitionId - alert definition id.

Returns:

host ids list.