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Developing Locally

The following technologies are required to build Airbyte locally.

  1. Java 17
  2. Node 16
  3. Python 3.7
  4. Docker
  5. Postgresql
  6. Jq

{% hint style="info" %} Manually switching between different language versions can get hairy. We recommend using a version manager such as pyenv or jenv. {% endhint %}

To start contributing:

  1. Start by forking the repository

  2. Clone the fork on your workstation:

    git clone [email protected]:{YOUR_USERNAME}/airbyte.git
cd airbyte

  3. You're ready to start!

Build with gradle

To compile and build just the platform (not all the connectors):

SUB_BUILD=PLATFORM ./gradlew build

{% hint style="info" %} If you're using Mac M1 (Apple Silicon) machines, it is possible to compile Airbyte by setting some additional environment variables:

export DOCKER_BUILD_PLATFORM=linux/arm64
export DOCKER_BUILD_ARCH=arm64
export ALPINE_IMAGE=arm64v8/alpine:3.14
export POSTGRES_IMAGE=arm64v8/postgres:13-alpine
export JDK_VERSION=17
SUB_BUILD=PLATFORM ./gradlew build

There are some known issues (Temporal failing during runs, and some connectors not working). See the GitHub issue for more information.

{% endhint %}

This will build all the code and run all the unit tests.

SUB_BUILD=PLATFORM ./gradlew build creates all the necessary artifacts (Webapp, Jars and Docker images) so that you can run Airbyte locally. Since this builds everything, it can take some time.

{% hint style="info" %} Gradle will use all CPU cores by default. If Gradle uses too much/too little CPU, tuning the number of CPU cores it uses to better suit a dev's need can help.

Adjust this by either, 1. Setting an env var: export GRADLE_OPTS="-Dorg.gradle.workers.max=3". 2. Setting a cli option: SUB_BUILD=PLATFORM ./gradlew build --max-workers 3 3. Setting the org.gradle.workers.max property in the gradle.properties file.

A good rule of thumb is to set this to (# of cores - 1). {% endhint %}

{% hint style="info" %} On Mac, if you run into an error while compiling openssl (this happens when running pip install), you may need to explicitly add these flags to your bash profile so that the C compiler can find the appropriate libraries.

export LDFLAGS="-L/usr/local/opt/openssl/lib"
export CPPFLAGS="-I/usr/local/opt/openssl/include"

{% endhint %}

Run in dev mode with docker-compose

These instructions explain how to run a version of Airbyte that you are developing on (e.g. has not been released yet).

SUB_BUILD=PLATFORM ./gradlew build
VERSION=dev docker-compose up

The build will take a few minutes. Once it completes, Airbyte compiled at current git revision will be running in dev mode in your environment.

In dev mode, all data will be persisted in /tmp/dev_root.

Run acceptance tests

To run acceptance (end-to-end) tests, you must have the Airbyte running locally.

SUB_BUILD=PLATFORM ./gradlew clean build
VERSION=dev docker-compose up
SUB_BUILD=PLATFORM ./gradlew :airbyte-tests:acceptanceTests

Run formatting automation/tests

Airbyte runs a code formatter as part of the build to enforce code styles. You should run the formatter yourself before submitting a PR (otherwise the build will fail).

The command to run formatting varies slightly depending on which part of the codebase you are working in.

Platform

If you are working in the platform run SUB_BUILD=PLATFORM ./gradlew format from the root of the repo.

Connector

If you are working on an individual connectors run: ./gradlew :airbyte-integrations:<directory the connector is in e.g. source-postgres>:format.

Connector Infrastructure

Finally, if you are working in any module in :airbyte-integrations:bases or :airbyte-cdk:python, run SUB_BUILD=CONNECTORS_BASE ./gradlew format.

Note: If you are contributing a Python file without imports or function definitions, place the following comment at the top of your file:

"""
[FILENAME] includes [INSERT DESCRIPTION OF CONTENTS HERE]
"""

Develop on airbyte-webapp

  • Spin up Airbyte locally so the UI can make requests against the local API.
  • Stop the webapp.
docker-compose stop webapp
  • Start up the react app.
cd airbyte-webapp
npm install
npm start
  • Happy Hacking!

Connector Specification Caching

The Configuration API caches connector specifications. This is done to avoid needing to run Docker everytime one is needed in the UI. Without this caching, the UI crawls. If you update the specification of a connector and need to clear this cache so the API / UI picks up the change, you have two options:

  1. Go to the Admin page in the UI and update the version of the connector. Updating to any version, including the one you're already on, will trigger clearing the cache.
  2. Restart the server by running the following commands:
VERSION=dev docker-compose down -v
VERSION=dev docker-compose up

Resetting the Airbyte developer environment

Sometimes you'll want to reset the data in your local environment. One common case for this is if you are updating an connector's entry in the database (airbyte-config/init/src/main/resources/config), often the easiest thing to do, is wipe the local database and start it from scratch. To reset your data back to a clean install of Airbyte, follow these steps:

  • Delete the datastore volumes in docker

      VERSION=dev docker-compose down -v

  • Remove the data on disk

      rm -rf /tmp/dev_root
  rm -rf /tmp/airbyte_local

  • Rebuild the project

     SUB_BUILD=PLATFORM ./gradlew clean build
 VERSION=dev docker-compose up -V

Troubleshooting

gradlew Could not target platform: 'Java SE 14' using tool chain: 'JDK 8 (1.8)'.

Somehow gradle didn't pick up the right java version for some reason. Find the install version and set the JAVA_HOME environment to point to the JDK folder.

For example:

env JAVA_HOME=/usr/lib/jvm/java-14-openjdk ./gradlew  :airbyte-integrations:connectors:your-connector-dir:build