Package gov.usgs.earthquake.indexer

Class ExternalIndexerListener

java.lang.Object

gov.usgs.util.DefaultConfigurable

gov.usgs.earthquake.product.AbstractListener

gov.usgs.earthquake.indexer.DefaultIndexerListener

gov.usgs.earthquake.indexer.ExternalIndexerListener

All Implemented Interfaces:

IndexerListener, Configurable

Direct Known Subclasses:

ExternalPreferredListener

public class ExternalIndexerListener
extends DefaultIndexerListener

ExternalIndexerListener triggers external, non-Java listener processes. Provides a translation to a command-line interface for the product indexer to speak with external, non-Java listeners. As a child-class of the AbstractListener, this also accepts the following configration parameters:

command

(Required) The command to execute. This must be an executable command and may include arguments. Any product-specific arguments are appended at the end of command.

storage

(Required) A directory used to store all products. Each product is extracted into a separate directory within this directory and is referenced by the --directory=/path/to/directory argument when command is executed.

processUnassociated

(Optional, Default = false) Whether or not to process unassociated products. Valid values are "true" and "false".

processPreferredOnly

(Optional, Default = false) Whether or not to process only preferred products of the type accepted by this listener. Valid values are "true" and "false".

autoArchive

(Optional, Default = false) Whether or not to archive products from storage when they are archived by the indexer.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	AUTO_ARCHIVE_DEFAULT	Default state for auto archive
static final String	AUTO_ARCHIVE_PROPERTY	Configuration parameter for autoArchive.
static final String	COMMAND_PROPERTY	Configuration parameter for command.
static final String	EVENT_ACTION_ARGUMENT	Argument for event action
static final String	EVENT_IDS_ARGUMENT	Argument for event ids
static final String	PREFERRED_DEPTH_ARGUMENT	Argument for preferred depth
static final String	PREFERRED_EVENTSOURCE_ARGUMENT	Argument for preferred eventsource
static final String	PREFERRED_EVENTSOURCECODE_ARGUMENT	Argument for preferred eventsourcecode
static final String	PREFERRED_ID_ARGUMENT	Argument for preferred event id
static final String	PREFERRED_LATITUDE_ARGUMENT	Argument for preferred latitude
static final String	PREFERRED_LONGITUDE_ARGUMENT	Argument for preferred longitude
static final String	PREFERRED_MAGNITUDE_ARGUMENT	Argument for preferred magnitude
static final String	PREFERRED_ORIGIN_TIME_ARGUMENT	Argument for preferred eventitme
static final String	SIGNATURE_ARGUMENT	Argument used to pass signature to external process.
static final String	STORAGE_DIRECTORY_PROPERTY	Short circuit to directly configure storage directory.
static final String	STORAGE_NAME_PROPERTY	Configuration parameter for storage directory product.

Fields inherited from class gov.usgs.earthquake.indexer.DefaultIndexerListener

IGNORE_ARCHIVE_DEFAULT, IGNORE_ARCHIVE_PROPERTY, PROCESS_ONLY_WHEN_EVENT_CHANGE_DEFAULT, PROCESS_ONLY_WHEN_EVENT_CHANGE_PROPERTY, PROCESS_PREFERRED_ONLY_DEFAULT, PROCESS_PREFERRED_ONLY_PROPERTY, PROCESS_UNASSOCIATED_DEFAULT, PROCESS_UNASSOCIATED_PROPERTY

Fields inherited from class gov.usgs.earthquake.product.AbstractListener

ATTEMPT_COUNT_PROPERTY, DEFAULT_ATTEMPT_COUNT, DEFAULT_RETRY_DELAY, DEFAULT_TIMEOUT, EXCLUDE_SOURCES_PROPERTY, EXCLUDE_TYPES_PROPERTY, INCLUDE_ACTUALS_PROPERTY, INCLUDE_DEVELOPMENTS_PROPERTY, INCLUDE_INTERNALS_PROPERTY, INCLUDE_SCENARIOS_PROPERTY, INCLUDE_SOURCES_PROPERTY, INCLUDE_TESTS_PROPERTY, INCLUDE_TYPES_PROPERTY, MAX_TRIES_PROPERTY, RETRY_DELAY_PROPERTY, TIMEOUT_PROPERTY

Constructor Summary

Constructors

Constructor	Description
ExternalIndexerListener()	Construct a new ExternalIndexerListener object The listener must be configured with a FileProductStorage and a command to function.

Method Summary

Modifier and Type	Method	Description
void	configure(Config config)	Configure an ExternalNotificationListener using a Config object.
String	getCommand()
String	getEventArguments(Event event)	Get command line arguments for an event.
String	getProductSummaryArguments(ProductSummary summary)	Get command line arguments for a product summary.
String	getProductSummaryCommand(Event event, ProductSummary summary)	Get the command for a specific event and summary.
String	getProductSummaryCommand(IndexerEvent change, IndexerChange indexerChange)	Get the product command and add the indexer arguments to it.
FileProductStorage	getStorage()
boolean	isAutoArchive()
void	onIndexerEvent(IndexerEvent change)	This method is called when the indexer makes a change to the ProductIndex.
void	runProductCommand(String command, Product product)	Run a product command.
void	setAutoArchive(boolean autoArchive)
void	setCommand(String command)
void	setStorage(FileProductStorage storage)
void	shutdown()	Called when client is shutting down.
void	startup()	Called after client has been configured and should begin processing.
Product	storeProduct(Product product)	Store product associated with the change.

Methods inherited from class gov.usgs.earthquake.indexer.DefaultIndexerListener

accept, accept, getProcessOnlyPreferredProducts, getProcessUnassociatedProducts, isIgnoreArchive, isProcessOnlyWhenEventChanged, setIgnoreArchive, setProcessOnlyPreferredProducts, setProcessOnlyWhenEventChanged, setProcessUnassociatedProducts

Methods inherited from class gov.usgs.earthquake.product.AbstractListener

accept, getExcludeSources, getExcludeTypes, getIncludeSources, getIncludeTypes, getMaxTries, getRetryDelay, getTimeout, isIncludeActuals, isIncludeDevelopments, isIncludeInternals, isIncludeScenarios, isIncludeTests, setIncludeActuals, setIncludeDevelopments, setIncludeInternals, setIncludeScenarios, setIncludeTests, setMaxTries, setRetryDelay, setTimeout

Methods inherited from class gov.usgs.util.DefaultConfigurable

getName, setName

Methods inherited from class java.lang.Object

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

Methods inherited from interface gov.usgs.util.Configurable

getName, setName

Methods inherited from interface gov.usgs.earthquake.indexer.IndexerListener

getMaxTries, getTimeout

Field Details

EVENT_ACTION_ARGUMENT

public static final String EVENT_ACTION_ARGUMENT

Argument for event action

See Also:

• Constant Field Values

EVENT_IDS_ARGUMENT

public static final String EVENT_IDS_ARGUMENT

Argument for event ids

See Also:

• Constant Field Values

PREFERRED_ID_ARGUMENT

public static final String PREFERRED_ID_ARGUMENT

Argument for preferred event id

See Also:

• Constant Field Values

PREFERRED_EVENTSOURCE_ARGUMENT

public static final String PREFERRED_EVENTSOURCE_ARGUMENT

Argument for preferred eventsource

See Also:

• Constant Field Values

PREFERRED_EVENTSOURCECODE_ARGUMENT

public static final String PREFERRED_EVENTSOURCECODE_ARGUMENT

Argument for preferred eventsourcecode

See Also:

• Constant Field Values

PREFERRED_MAGNITUDE_ARGUMENT

public static final String PREFERRED_MAGNITUDE_ARGUMENT

Argument for preferred magnitude

See Also:

• Constant Field Values

PREFERRED_LONGITUDE_ARGUMENT

public static final String PREFERRED_LONGITUDE_ARGUMENT

Argument for preferred longitude

See Also:

• Constant Field Values

PREFERRED_LATITUDE_ARGUMENT

public static final String PREFERRED_LATITUDE_ARGUMENT

Argument for preferred latitude

See Also:

• Constant Field Values

PREFERRED_DEPTH_ARGUMENT

public static final String PREFERRED_DEPTH_ARGUMENT

Argument for preferred depth

See Also:

• Constant Field Values

PREFERRED_ORIGIN_TIME_ARGUMENT

public static final String PREFERRED_ORIGIN_TIME_ARGUMENT

Argument for preferred eventitme

See Also:

• Constant Field Values

STORAGE_NAME_PROPERTY

public static final String STORAGE_NAME_PROPERTY

Configuration parameter for storage directory product.

See Also:

• Constant Field Values

STORAGE_DIRECTORY_PROPERTY

public static final String STORAGE_DIRECTORY_PROPERTY

Short circuit to directly configure storage directory.

See Also:

• Constant Field Values

COMMAND_PROPERTY

public static final String COMMAND_PROPERTY

Configuration parameter for command.

See Also:

• Constant Field Values

AUTO_ARCHIVE_PROPERTY

public static final String AUTO_ARCHIVE_PROPERTY

Configuration parameter for autoArchive.

See Also:

• Constant Field Values

AUTO_ARCHIVE_DEFAULT

public static final String AUTO_ARCHIVE_DEFAULT

Default state for auto archive

See Also:

• Constant Field Values

SIGNATURE_ARGUMENT

public static final String SIGNATURE_ARGUMENT

Argument used to pass signature to external process.

See Also:

• Constant Field Values

Constructor Details

ExternalIndexerListener

public ExternalIndexerListener()

Construct a new ExternalIndexerListener object The listener must be configured with a FileProductStorage and a command to function.

Method Details

onIndexerEvent

public void onIndexerEvent(IndexerEvent change)
                    throws Exception

Description copied from interface: IndexerListener

This method is called when the indexer makes a change to the ProductIndex.

Specified by:

onIndexerEvent in interface IndexerListener

Overrides:

onIndexerEvent in class DefaultIndexerListener

Parameters:

change - description of the change.

Throws:

Exception - if error occurs

storeProduct

public Product storeProduct(Product product)
                     throws Exception

Store product associated with the change.

Parameters:

product - product to be stored.

Returns:

a new product object, read from the listener storage.

Throws:

Exception - if error occurs

runProductCommand

public void runProductCommand(String command,
 Product product)
                       throws Exception

Run a product command.

Parameters:

command - command and arguments.

product - product, when set and empty content (path "") is defined, the content is provided to the command on stdin.

Throws:

Exception - if error occurs

getProductSummaryCommand

public String getProductSummaryCommand(IndexerEvent change,
 IndexerChange indexerChange)
                                throws Exception

Get the product command and add the indexer arguments to it.

Parameters:

change - The IndexerEvent received by the ExternalIndexerListener

indexerChange - The IndexerChange

Returns:

the command to execute with its arguments as a string

Throws:

Exception - if error occurs

getProductSummaryCommand

public String getProductSummaryCommand(Event event,
 ProductSummary summary)
                                throws Exception

Get the command for a specific event and summary.

Parameters:

event - Specific event

summary - Specific product summary

Returns:

command line arguments as a string.

Throws:

Exception - if error occurs

getEventArguments

public String getEventArguments(Event event)

Get command line arguments for an event.

Parameters:

event - the event

Returns:

command line arguments

getProductSummaryArguments

public String getProductSummaryArguments(ProductSummary summary)
                                  throws IOException

Get command line arguments for a product summary.

Parameters:

summary - the product summary

Returns:

command line arguments

Throws:

IOException - if IO error occurs

configure

public void configure(Config config)
               throws Exception

Configure an ExternalNotificationListener using a Config object.

Specified by:

configure in interface Configurable

Overrides:

configure in class DefaultIndexerListener

Parameters:

config - the config containing a

Throws:

Exception - if configuration exceptions occur.

shutdown

public void shutdown()
              throws Exception

Called when client is shutting down.

Specified by:

shutdown in interface Configurable

Overrides:

shutdown in class DefaultConfigurable

Throws:

Exception - if exceptions occur while starting.

startup

public void startup()
             throws Exception

Called after client has been configured and should begin processing.

Specified by:

startup in interface Configurable

Overrides:

startup in class DefaultConfigurable

Throws:

Exception - if exceptions occur while starting.

getStorage

public FileProductStorage getStorage()

Returns:

the storage

setStorage

public void setStorage(FileProductStorage storage)

Parameters:

storage - the storage to set

getCommand

public String getCommand()

Returns:

the command

setCommand

public void setCommand(String command)

Parameters:

command - the command to set

isAutoArchive

public boolean isAutoArchive()

Returns:

the autoArchive

setAutoArchive

public void setAutoArchive(boolean autoArchive)

Parameters:

autoArchive - the autoArchive to set