Packages

package root

Definition Classes: root

package com

Definition Classes: root

package here

Definition Classes: com

package platform

Definition Classes: here

package data

Definition Classes: platform

package processing

This package provides the Data Processing Library for building distributed data processing applications.

A Runner both implements the interface with the environment for an application to run, and starts the application. The application, in turn, is driven by a Driver, that controls and performs the distributed processing.

Choose a Runner best suited for the environment where the application runs.

The Driver performs one of more tasks which read layers from input catalogs and write to one or more layers of an output catalog.

The main entry point in the processing library is the com.here.platform.data.processing.driver.DriverBuilder class where you can add different kinds of tasks to the driver. The driver runs the tasks, and commits the final results to the output catalog.

Tasks are implemented using one or more compilers.

The simplest compiler is the direct compiler which maps each input tile to N output tiles. The application needs to define com.here.platform.data.processing.compiler.Direct1ToNCompiler.

Other more complex compilation patterns are based on some kind of dependency tracking between input partitions and output partitions.

The processing Library supports the following patterns:

- com.here.platform.data.processing.compiler.NonIncrementalCompiler: non-incremental compilation only - com.here.platform.data.processing.compiler.DepCompiler: non-incremental dependency calculation and incremental compilation - com.here.platform.data.processing.compiler.IncrementalDepCompiler: incremental dependency calculation and compilation - com.here.platform.data.processing.compiler.Direct1ToNCompiler: incremental compilation where every output tile depends only on one input tile, and this mapping is independent from tile content - com.here.platform.data.processing.compiler.DirectMToNCompiler: incremental compilation where every output tile depends on multiple input tiles, and this mapping is independent from tile content - com.here.platform.data.processing.compiler.MapGroupCompiler: incremental compilation where every output tile can depend on multiple input tiles, and this mapping depend on the tile content - com.here.platform.data.processing.compiler.RefTreeCompiler: fully-managed two phases incremental compilation that can resolve references between input partitions. Input/Output dependency management is implemented and the developer doesn't need to provide this logic

The application's main object normally mixes in the a runner trait (like PipelineRunner) to setup the Driver, and interfaces with the environment where the application is run. See the Main classes in the example compilers for more details.

com.here.platform.data.processing.catalog, com.here.platform.data.processing.blobstore, and com.here.platform.data.processing.publisher contain utilities for accessing catalogs and payloads in a Spark-friendly way, providing an RDD-based abstraction over data and metadata. These classes are used by the processing library, but can also be used independently.

Definition Classes: data

package driver

Definition Classes: processing

package config

This package contains the configuration classes for all components of a Driver.

This package contains the configuration classes for all components of a Driver. Configuration is read from application.conf and provided to the developer as a com.here.platform.data.processing.driver.config.CompleteConfig instance, when the driver is setup.

Definition Classes: driver

package deltasets

Definition Classes: driver

package filter

Definition Classes: driver

package impl

Definition Classes: driver

package deltasets

package executors

package state

CatalogIdVersionEncoding

FixedVersionIdEncoding

Implicits

PreviousRunIdEncoding

package job

Definition Classes: driver

package modes

Definition Classes: driver

package runner

Definition Classes: driver

com.here.platform.data.processing.driver

impl

package impl

Ordering

Alphabetic

Visibility

Public
Protected

Package Members

package deltasets
package executors
package state

Type Members

sealed abstract class CatalogIdVersionEncoding extends AnyRef
Defines an encoding scheme for version information in catalog IDs.
Defines an encoding scheme for version information in catalog IDs. Every class extending this trait must define a separate encoding scheme with a unique identifier.
Attributes
protected
trait CommitProducer extends DriverTask
Produces commits for the com.here.platform.data.processing.driver.Driver to commit, together with the produced map.
class CompleteConfigLoader extends CompleteConfig
Loads the configuration from application.conf and/or reference.conf.
Loads the configuration from application.conf and/or reference.conf. The search path and syntax are based on lightbend/config (https://github.com/lightbend/config), formerly known as Typesafe config.
In a single JVM, you can have multiple instances of this class. Though all of them share the same file-based configuration, there may be different overrides provided as constructor parameters.
class DriverContextImpl extends DriverContext
Private implementation of com.here.platform.data.processing.driver.DriverContext.
Private implementation of com.here.platform.data.processing.driver.DriverContext. This sets up all the common objects that every com.here.platform.data.processing.driver.DriverTask, com.here.platform.data.processing.driver.modes.TaskMode and in general every compiler see.
class DriverImpl extends Driver with ContextLogging
The main implementation of the com.here.platform.data.processing.driver.Driver interface.
class FailOnEmptyUploader extends Uploader
Wrapper to fail an upload if the payload is empty.
abstract class FixedVersionIdEncoding extends CatalogIdVersionEncoding
The CatalogIdVersionEncoding for com.here.platform.data.processing.driver.Default.FixedVersionId
The CatalogIdVersionEncoding for com.here.platform.data.processing.driver.Default.FixedVersionId
Attributes
protected[driver]
abstract class PreviousRunIdEncoding extends CatalogIdVersionEncoding
The CatalogIdVersionEncoding for com.here.platform.data.processing.driver.Default.PreviousRunId
The CatalogIdVersionEncoding for com.here.platform.data.processing.driver.Default.PreviousRunId
Attributes
protected[driver]

Value Members

object CatalogIdVersionEncoding
Provides generic functionality for encoding and decoding version information in catalog IDs.
Provides generic functionality for encoding and decoding version information in catalog IDs.
Attributes
protected[driver]
object DepResolution
Contains utility functions to manage catalog dependencies.
object Implicits

Packages

impl

package impl

Package Members

Type Members

Value Members

Ungrouped

impl