Indexer

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The indexer is a complex listener that processes products to aggregate the various product types from various sources into the seismic events to which they relate. In addition to the standard listener properties, this type of listener accepts the following specific properties:

archiveInterval

The interval (in milliseconds) on which to run the configured archive policies

Default: 300000

archivePolicy

A comma-separated list of named configuration sub-sections, each of which define an archive policy

associator

The name of a configuration sub-section defining an associator for the indexer to use when associating products.

Optional, default: DefaultAssociator

associateUsingCurrentProducts

Boolean flag indicating if only current (i.e., not superseded) products shall be considered when searching for candidate events to which a product should be associated.

Optional, default: false

index

Property referencing a JDBCProductIndex configuration sub-section.

One of index or indexFile is required

indexFile

The name of a file where a SQLite database for the index will be created.

One of index or indexFile is required

listeners

A comma-separated list of listeners to be notified about indexing events. Each listener should be a reference to a named configuration sub-section defining an IndexerListener.

localRegionsFile

The path to a local file containing regional information used when determining preferred weight for products.

Default: regions.json

modules

A comma-separated list of modules used when summarizing a product. Each module should be a reference to a named configuration sub-section defining an IndexerModule.

storage

A reference to a named configuration sub-section defining the storage used by the indexer

One of storage and storageDirectory is required

storageDirectory

The name of the directory where a FileProductStorage should be created for use by the indexer.

One of storage and storageDirectory is required

Example configuration

Note: Dependent configuration sub-sections not shown in this configuration example.

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listeners = indexer

[indexer]
type = gov.usgs.earthquake.indexer.Indexer
index = indexer_index
listenerIndex = indexer_listener_index
storage = indexer_storage

Note: The indexer leverages configuration for both a listenerIndex and an index. The listenerIndex keeps track of which products the listener has previously received notifications about from its receiver. Conversely the index is where products are summarized and associated into events.

Last modified: Fri Aug 16 13:01:31 UTC 2024