tap-csv-folder

tap-csv-folder is a Singer tap for CSV files stored in a folder on a local or remote filesystem.

Built with the Meltano Tap SDK for Singer Taps.

Installation

Install from GitHub:

pipx install git+https://github.com/MeltanoLabs/tap-csv-folder.git@main

Install in a Meltano project:

meltano add extractor tap-csv-folder --from-ref https://raw.githubusercontent.com/MeltanoLabs/tap-csv-folder/refs/heads/main/plugin.yml

Configuration

Accepted Config Options

Setting	Required	Default	Description
delimiter	False	,	Field delimiter character.
quotechar	False	"	Quote character.
escapechar	False	None	Escape character.
doublequote	False	true	Whether quotechar inside a field should be doubled.
lineterminator	False
Line terminator character.
filesystem	False	local	The filesystem to use.
path	False	None	Path to the directory where the files are stored.
read_mode	False	None	Use one_stream_per_file to read each file as a separate stream, or merge to merge all files into a single stream.
stream_name	False	files	Name of the stream to use when read_mode is merge.

Filesystem settings

The following settings are provided by the Singer SDK for filesystems and supported by the tap.

Setting	Required	Default	Description
ftp	False	None	FTP connection settings
ftp.host	True	None	FTP server host
ftp.port	False	21	FTP server port
ftp.username	False	None	FTP username
ftp.password	False	None	FTP password
ftp.timeout	False	60	Timeout of the FTP connection in seconds
ftp.encoding	False	utf-8	FTP server encoding
sftp	False	None	SFTP connection settings
sftp.host	True	None	SFTP server host
sftp.ssh_kwargs	False	None	SSH connection settings
sftp.ssh_kwargs.port	False	22	SFTP server port
sftp.ssh_kwargs.username	True	None	SFTP username
sftp.ssh_kwargs.password	False	None	SFTP password
sftp.ssh_kwargs.pkey	False	None	Private key
sftp.ssh_kwargs.timeout	False	60	Timeout of the SFTP connection in seconds

Built-in Singer SDK capabilities

The following settings are provided by the Singer SDK and automatically supported by the tap.

Setting	Required	Default	Description
stream_maps	False	None	Config object for stream maps capability. For more information check out Stream Maps.
stream_map_config	False	None	User-defined config values to be used within map expressions.
faker_config	False	None	Config for the Faker instance variable fake used within map expressions. Only applicable if the plugin specifies faker as an addtional dependency (through the singer-sdk faker extra or directly).
faker_config.seed	False	None	Value to seed the Faker generator for deterministic output: https://faker.readthedocs.io/en/master/#seeding-the-generator
faker_config.locale	False	None	One or more LCID locale strings to produce localized output for: https://faker.readthedocs.io/en/master/#localization
flattening_enabled	False	None	'True' to enable schema flattening and automatically expand nested properties.
flattening_max_depth	False	None	The max depth to flatten schemas.
batch_config	False	None
batch_config.encoding	False	None	Specifies the format and compression of the batch files.
batch_config.encoding.format	False	None	Format to use for batch files.
batch_config.encoding.compression	False	None	Compression format to use for batch files.
batch_config.storage	False	None	Defines the storage layer to use when writing batch files
batch_config.storage.root	False	None	Root path to use when writing batch files.
batch_config.storage.prefix	False	None	Prefix to use when writing batch files.

A full list of supported settings and capabilities for this tap is available by running:

tap-csv-folder --about

Configure using environment variables

This Singer tap will automatically import any environment variables within the working directory's .env if the --config=ENV is provided, such that config values will be considered if a matching environment variable is set either in the terminal context or in the .env file.

Source Authentication and Authorization

Usage

You can easily run tap-csv-folder by itself or in a pipeline using Meltano.

Executing the Tap Directly

tap-csv-folder --version
tap-csv-folder --help
tap-csv-folder --config CONFIG --discover > ./catalog.json

Developer Resources

Follow these instructions to contribute to this project.

Initialize your Development Environment

pipx install poetry
poetry install

Create and Run Tests

Create tests within the tests subfolder and then run:

poetry run pytest

You can also test the tap-csv-folder CLI interface directly using poetry run:

poetry run tap-csv-folder --help

Testing with Meltano

Note: This tap will work in any Singer environment and does not require Meltano. Examples here are for convenience and to streamline end-to-end orchestration scenarios.

Next, install Meltano (if you haven't already) and any needed plugins:

# Install meltano
pipx install meltano
# Initialize meltano within this directory
cd tap-csv-folder
meltano install

Now you can test and orchestrate using Meltano:

# Test invocation:
meltano invoke tap-csv-folder --version
# OR run a test `elt` pipeline:
meltano run tap-csv-folder target-jsonl

SDK Dev Guide

See the dev guide for more instructions on how to use the SDK to develop your own taps and targets.