Package org.apache.solr.cloud.autoscaling

Class SystemLogListener

java.lang.Object

org.apache.solr.cloud.autoscaling.TriggerListenerBase

org.apache.solr.cloud.autoscaling.SystemLogListener

All Implemented Interfaces:

Closeable, AutoCloseable, TriggerListener

public class SystemLogListener
extends TriggerListenerBase

This listener saves events to the CollectionAdminParams.SYSTEM_COLL collection.

Configuration properties:

• collection - optional string, specifies what collection should be used for storing events. Default value is CollectionAdminParams.SYSTEM_COLL.

Field Summary

Fields

Modifier and Type	Field	Description
static String	ACTION_FIELD
static String	AFTER_ACTIONS_FIELD
static String	BEFORE_ACTIONS_FIELD
static String	COLLECTIONS_FIELD
static String	DOC_TYPE
static String	EVENT_SOURCE_FIELD
static String	EVENT_TYPE_FIELD
static String	MESSAGE_FIELD
static String	SOURCE
static String	SOURCE_FIELD
static String	STAGE_FIELD

Fields inherited from class org.apache.solr.cloud.autoscaling.TriggerListenerBase

cloudManager, config, enabled, loader, requiredProperties, validProperties, validPropertyPrefixes

Constructor Summary

Constructors

Constructor	Description
SystemLogListener()

Method Summary

Modifier and Type	Method	Description
void	configure(SolrResourceLoader loader, SolrCloudManager cloudManager, AutoScalingConfig.TriggerListenerConfig config)	Called when listener is created but before it's initialized and used.
void	onEvent(TriggerEvent event, TriggerEventProcessorStage stage, String actionName, ActionContext context, Throwable error, String message)	This method is called when either a particular stage or actionName is reached during event processing.

Methods inherited from class org.apache.solr.cloud.autoscaling.TriggerListenerBase

close, getConfig, init, isEnabled

Methods inherited from class java.lang.Object

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

Field Detail

SOURCE_FIELD

public static final String SOURCE_FIELD

See Also:

Constant Field Values

EVENT_SOURCE_FIELD

public static final String EVENT_SOURCE_FIELD

See Also:

Constant Field Values

EVENT_TYPE_FIELD

public static final String EVENT_TYPE_FIELD

See Also:

Constant Field Values

STAGE_FIELD

public static final String STAGE_FIELD

See Also:

Constant Field Values

ACTION_FIELD

public static final String ACTION_FIELD

See Also:

Constant Field Values

MESSAGE_FIELD

public static final String MESSAGE_FIELD

See Also:

Constant Field Values

BEFORE_ACTIONS_FIELD

public static final String BEFORE_ACTIONS_FIELD

See Also:

Constant Field Values

AFTER_ACTIONS_FIELD

public static final String AFTER_ACTIONS_FIELD

See Also:

Constant Field Values

COLLECTIONS_FIELD

public static final String COLLECTIONS_FIELD

See Also:

Constant Field Values

SOURCE

public static final String SOURCE

DOC_TYPE

public static final String DOC_TYPE

See Also:

Constant Field Values

Constructor Detail

SystemLogListener

public SystemLogListener()

Method Detail

configure

public void configure(SolrResourceLoader loader,
                      SolrCloudManager cloudManager,
                      AutoScalingConfig.TriggerListenerConfig config)
               throws TriggerValidationException

Description copied from interface: TriggerListener

Called when listener is created but before it's initialized and used. This method should also verify that the configuration parameters are correct. It may be called multiple times.

Specified by:

configure in interface TriggerListener

Overrides:

configure in class TriggerListenerBase

Parameters:

loader - loader to use for instantiating sub-components

cloudManager - current instance of SolrCloudManager

config - coniguration

Throws:

TriggerValidationException - contains details of invalid configuration parameters.

onEvent

public void onEvent(TriggerEvent event,
                    TriggerEventProcessorStage stage,
                    String actionName,
                    ActionContext context,
                    Throwable error,
                    String message)
             throws Exception

Description copied from interface: TriggerListener

This method is called when either a particular stage or actionName is reached during event processing.

Parameters:

event - current event being processed

stage - TriggerEventProcessorStage that this listener was registered for, or null

actionName - TriggerAction name that this listener was registered for, or null

context - optional ActionContext when the processing stage is related to an action, or null

error - optional Throwable error, or null

message - optional message

Throws:

Exception