meltano-map-transformer - Meltano Hub

Meltano Map Transformer

meltano-map-transformer (meltano variant)

A map transformer which implements the Stream Maps capability from Meltano's tap and target SDK.

The meltano-map-transformer mapper is a plugin for transforming data between an extractor and a loader. Commonly used for obfuscating, filtering, or removing sensitive data from streams.

Getting Started

Prerequisites

If you haven't already, follow the initial steps of the Getting Started guide:

Installation and configuration

Add the meltano-map-transformer mapper to your project using
```
meltano add
```
:

meltano add --plugin-type mapper meltano-map-transformer

Configure the meltano-map-transformer settings using

meltano config

:

meltano config meltano-map-transformer set --interactive

Next steps

Follow the remaining steps of the Getting Started guide:

Inline Data Mapping
See the mappers documentation or the plugin repo's README.md for more details on configuration.

If you run into any issues, learn how to get help.

Capabilities

The current capabilities for meltano-map-transformer may have been automatically set when originally added to the Hub. Please review the capabilities when using this mapper. If you find they are out of date, please consider updating them by making a pull request to the YAML file that defines the capabilities for this mapper.

This plugin has the following capabilities:

about
stream-maps
schema-flattening
structured-logging

You can override these capabilities or specify additional ones in your meltano.yml by adding the capabilities key.

Settings

The meltano-map-transformer settings that are known to Meltano are documented below. To quickly find the setting you're looking for, click on any setting name from the list:

flattening_max_key_length

Expand To Show SDK Settings

stream_maps
stream_map_config
flattening_enabled
flattening_max_depth
faker_config.locale
faker_config.seed

You can also list these settings using

meltano config

with the list subcommand:

meltano config meltano-map-transformer list

You can override these settings or specify additional ones in your meltano.yml by adding the settings key.

Please consider adding any settings you have defined locally to this definition on MeltanoHub by making a pull request to the YAML file that defines the settings for this plugin.

Max Key Length (flattening_max_key_length)

Environment variable: MELTANO_MAP_TRANSFORMER_FLATTENING_MAX_KEY_LENGTH

The maximum length of a flattened key.

Configure this setting directly using the following Meltano command:

meltano config meltano-map-transformer set flattening_max_key_length [value]

Expand To Show SDK Settings

Stream Maps (stream_maps)

Environment variable: MELTANO_MAP_TRANSFORMER_STREAM_MAPS

Config object for stream maps capability. For more information check out Stream Maps.

Configure this setting directly using the following Meltano command:

meltano config meltano-map-transformer set stream_maps [value]

User Stream Map Configuration (stream_map_config)

Environment variable: MELTANO_MAP_TRANSFORMER_STREAM_MAP_CONFIG

User-defined config values to be used within map expressions.

Configure this setting directly using the following Meltano command:

meltano config meltano-map-transformer set stream_map_config [value]

Enable Schema Flattening (flattening_enabled)

Environment variable: MELTANO_MAP_TRANSFORMER_FLATTENING_ENABLED

'True' to enable schema flattening and automatically expand nested properties.

Configure this setting directly using the following Meltano command:

meltano config meltano-map-transformer set flattening_enabled [value]

Max Flattening Depth (flattening_max_depth)

Environment variable: MELTANO_MAP_TRANSFORMER_FLATTENING_MAX_DEPTH

The max depth to flatten schemas.

Configure this setting directly using the following Meltano command:

meltano config meltano-map-transformer set flattening_max_depth [value]

Faker Locale (faker_config.locale)

Environment variable: MELTANO_MAP_TRANSFORMER_FAKER_CONFIG_LOCALE

One or more LCID locale strings to produce localized output for: https://faker.readthedocs.io/en/master/#localization

Configure this setting directly using the following Meltano command:

meltano config meltano-map-transformer set faker_config locale [value]

Faker Seed (faker_config.seed)

Environment variable: MELTANO_MAP_TRANSFORMER_FAKER_CONFIG_SEED

Value to seed the Faker generator for deterministic output: https://faker.readthedocs.io/en/master/#seeding-the-generator

Configure this setting directly using the following Meltano command:

meltano config meltano-map-transformer set faker_config seed [value]

Something missing?

This page is generated from a YAML file that you can contribute changes to.

Edit it on GitHub!

Looking for help?

If you're having trouble getting the meltano-map-transformer mapper to work, look for an existing issue in its repository, file a new issue, or join the Meltano Slack community and ask for help in the

#plugins-general

channel.

Meltano Map Transformer is built and maintained by the Meltano community. For connectors that are built, tested, and supported by the Meltano team, explore Meltano Cloud.

Expert support — get support from experts who build and support connectors on Meltano Cloud
Tested daily — daily monitoring catches issues before they hit your pipelines
Low maintenance — API changes, schema drift and breaking changes handled for you

Get in touch Book a demo

Install

meltano add
                --plugin-type mapper meltano-map-transformer

Maintenance Status

Repo

https://github.com/MeltanoLabs/meltano-map-transform

Maintainer

Meltano Stats

PyPI Stats

Keywords