Contributing#
We welcome all kinds of contributions to EvaDB.
Setting up the Development Environment#
First, you will need to checkout the repository from GitHub and build EvaDB from the source. Follow the following instructions to build EvaDB locally. We recommend using a virtual environment and the pip package manager.
git clone https://github.com/georgia-tech-db/eva.git && cd eva
python3 -m venv test_evadb # create a virtual environment
source test_evadb/bin/activate # activate the virtual environment
pip install --upgrade pip # upgrade pip
pip install -e ".[dev]" # build and install the EvaDB package
bash script/test/test.sh # run the EvaDB test suite
After installing the package locally, you can make changes and run the test cases to check their impact.
pip install . # reinstall EvaDB package to include local changes
pkill -9 evadb_server # kill running EvaDB server (if any)
evadb_server& # launch EvaDB server with newly installed package
Testing#
Check if your local changes broke any unit or integration tests by running the following script:
bash script/test/test.sh
If you want to run a specific test file, use the following command.
python -m pytest test/integration_tests/test_select_executor.py
Use the following command to run a specific test case within a specific test file.
python -m pytest test/integration_tests/test_select_executor.py -k 'test_should_load_and_select_in_table'
Submitting a Contribution#
Follow the following steps to contribute to EvaDB:
Merge the most recent changes from the master branch
git remote add origin git@github.com:georgia-tech-db/eva.git
git pull . origin/master
Run the test script to ensure that all the test cases pass.
If you are adding a new EvaDB command, add an illustrative example usage in the documentation.
Run the following command to ensure that code is properly formatted.
python script/formatting/formatter.py
Code Style#
We use the black code style for formatting the Python code. For docstrings and documentation, we use Google Pydoc format.
def function_with_types_in_docstring(param1, param2) -> bool:
"""Example function with types documented in the docstring.
Additional explanatory text can be added in paragraphs.
Args:
param1 (int): The first parameter.
param2 (str): The second parameter.
Returns:
bool: The return value. True for success, False otherwise.
Debugging#
We recommend using Visual Studio Code with a debugger for developing EvaDB. Here are the steps for setting up the development environment:
Install the Python extension in Visual Studio Code.
Install the Python Test Explorer extension.
3. Follow these instructions to run a particular test case from the file: Getting started.
Architecture Diagram#
Troubleshooting#
If the test suite fails with a PermissionDenied exception, update the path_prefix attribute under the storage section in the EvaDB configuration file (~/.evadb/evadb.yml
) to a directory where you have write privileges.