https://github.com/steveniemitz/littletable

In-memory JVM-based Bigtable emulator
https://github.com/steveniemitz/littletable

Last synced: about 1 month ago
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In-memory JVM-based Bigtable emulator

• Host: GitHub
• URL: https://github.com/steveniemitz/littletable
• Owner: steveniemitz
• License: apache-2.0
• Created: 2019-01-25T19:02:54.000Z (almost 7 years ago)
• Default Branch: master
• Last Pushed: 2022-07-27T16:00:41.000Z (over 3 years ago)
• Last Synced: 2025-05-28T10:11:24.110Z (6 months ago)
• Language: Java
• Homepage:
• Size: 169 KB
• Stars: 13
• Watchers: 2
• Forks: 2
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-bigtable - LittleTable - In-memory JVM-based emulator for Bigtable. (Tools / Emulators)

README

          
# LittleTable

[![Build Status](https://github.com/steveniemitz/littletable/actions/workflows/ci.yml/badge.svg)](https://github.com/steveniemitz/littletable/actions/workflows/ci.yml)

[![Maven Version](https://img.shields.io/maven-central/v/com.steveniemitz/littletable_2.12?label=littletable_2.12)](http://search.maven.org/#search|gav|1|g:"com.steveniemitz")

[![Mentioned in Awesome Bigtable](https://awesome.re/mentioned-badge-flat.svg)](https://github.com/zrosenbauer/awesome-bigtable)

## Overview

LittleTable is an emulator for [Google Cloud Bigtable](https://cloud.google.com/bigtable/), intended

to replace the emulator distributed with the `gcloud` utility.

It aims to provide full compatibility with the Cloud Bigtable API,

and fill the gaps in the Go-based emulator, such as the `sink` filter.

## Getting the emulator

Maven:

```xml

  com.steveniemitz

  littletable_2.12

  1.1.0

```

Gradle:

```gradle

compile 'com.steveniemitz:littletable_2.12:1.0.0'

```

sbt:

```sbt

libraryDependencies += "com.steveniemitz" %% "littletable" % "1.0.0"

```

### Other Dependencies

LittleTable assumes you'll "bring your own" dependencies for gRPC as well as [`bigtable-client-core`](https://mvnrepository.com/artifact/com.google.cloud.bigtable/bigtable-client-core).

By default, `bigtable-client-core` will also include the required gRPC dependencies, so adding a

dependency to that is all that's required.

See [`build.sbt`](build.sbt) for reasonable defaults.

## Usage

 

`BigtableEmulator.newBuilder` (or `BigtableEmulators.newBuilder` in Java) can be used to obtain an 

emulator builder.  The builder can configure an in-process gRPC transport, or a TCP transport 

(or both).  When using the in-process emulator, the session provided by the built emulator must be 

used.  For advanced usage, `BigtableEmulator.Builder.configureServerBuilder` can be used to 

configure a user-provided gRPC server builder.

```scala

val emulator = 

  BigtableEmulator.newBuilder

    .withInProcess

    .build()

// Start the emulator    

emulator.start()

// Use the client

val session = emulator.session

val rows = session.getDataClient.readFlatRowsList(...)

```

See the [`BigtableTestSuite`](src/test/scala/com/steveniemitz/littletable/BigtableTestSuite.scala) for a full example.