org.thales.punch.libraries.storm.bolt.file

Interface IFileNameSupplier

All Superinterfaces:

Serializable, Supplier<String>

All Known Implementing Classes:

ObjectStorageFileNameSupplier

public interface IFileNameSupplier
extends Supplier<String>, Serializable

Each batch receives a unique file name (or object name). This interface defines a supplier of such names.

To get it straight, if an archive is a filesystem with root "/data/archive", a batch file in there could be "/data/archive/2019/09/2/punchplatformxyz.csv.gz". The "2019/09/2/punchplatformxyz.csv.gz" part is the called object id.

This sounds simple but the logic of generating the id is very configurable and depends on each type of archive type (filesystem, object storage).

Hence the need to have such id IFileNameSupplier.

Author:

dimi

Method Summary

Modifier and Type	Method and Description
IFileNameSupplier	prepare(org.thales.punch.libraries.objectstorage.indexing.BatchMetadata metaData) Prepare this supplier before you use it to get a new batch identifier.

Methods inherited from interface java.util.function.Supplier

get

Method Detail

prepare

IFileNameSupplier prepare(org.thales.punch.libraries.objectstorage.indexing.BatchMetadata metaData)

Prepare this supplier before you use it to get a new batch identifier. You must basically call this for each batch once you have your BatchMetadata. It allows the supplier to generate the correct identifier.

Parameters:

metaData - the current batch meta data.

Returns:

this supplier