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114 lines
4.2 KiB
Markdown
114 lines
4.2 KiB
Markdown
---
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title: Prerequisites
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slug: /developers/contribute/build-code-and-run-tests/prerequisites
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---
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# Prerequisites
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This guide will help you set up all prerequisites to develop on OpenMetadata.
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OpenMetadata being a full stack project, we use the following for development:
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- [Docker 20 or higher](https://docs.docker.com/engine/install/)
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- [Java JDK 17](https://docs.oracle.com/en/java/javase/17/install/overview-jdk-installation.html)
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- [Antlr 4.9.2](https://www.antlr.org/) - `sudo make install_antlr_cli`
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- [JQ](https://jqlang.github.io/jq/) - `brew install jq` (osx) `apt-get install jq` (Ubuntu)
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- [Maven 3.5.x or higher](https://maven.apache.org/install.html) - (with Java JDK 11)
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- [Python 3.7, 3.8 or 3.9](https://www.python.org/downloads/)
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- [Node >=16.0.0 & Node <= 18.0.0](https://nodejs.org/en/download/)
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- [Yarn ^1.22.0](https://classic.yarnpkg.com/lang/en/docs/install/)
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- [Rpm (Optional, only to run RPM profile with maven)](https://macappstore.org/rpm/)
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To validate the installation of the above tools, you can run:
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```shell
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make prerequisites
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```
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### Example Snapshot on a Macbook
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```shell
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> docker --version
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Docker version 20.10.8, build 3967b7d
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> java -version
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openjdk version "17.0.8.1" 2023-08-24
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OpenJDK Runtime Environment AdoptOpenJDK-17.0.8.1+0 (build 17.0.8.1+0)
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OpenJDK 64-Bit Server VM AdoptOpenJDK-17.0.8.1+0 (build 17.0.8.1+0, mixed mode)
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> antlr4
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ANTLR Parser Generator Version 4.9.2
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-o ___ specify output directory where all output is generated
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-lib ___ specify location of grammars, tokens files
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-atn generate rule augmented transition network diagrams
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-encoding ___ specify grammar file encoding; e.g., euc-jp
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-message-format ___ specify output style for messages in antlr, gnu, vs2005
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-long-messages show exception details when available for errors and warnings
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-listener generate parse tree listener (default)
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-no-listener don\'t generate parse tree listener
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-visitor generate parse tree visitor
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-no-visitor don\'t generate parse tree visitor (default)
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-package ___ specify a package/namespace for the generated code
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-depend generate file dependencies
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-D<option>=value set/override a grammar-level option
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-Werror treat warnings as errors
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-XdbgST launch StringTemplate visualizer on generated code
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-XdbgSTWait wait for STViz to close before continuing
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-Xforce-atn use the ATN simulator for all predictions
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-Xlog dump lots of logging info to antlr-timestamp.log
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-Xexact-output-dir all output goes into -o dir regardless of paths/package
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> mvn -version
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Apache Maven 3.8.2 (ea98e05a04480131370aa0c110b8c54cf726c06f)
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Maven home: /usr/local/Cellar/maven/3.8.2/libexec
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Java version: 11.0.11, vendor: AdoptOpenJDK, runtime: /Library/Java/JavaVirtualMachines/adoptopenjdk-11.jdk/Contents/Home
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Default locale: en_US, platform encoding: UTF-8
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OS name: "mac os x", version: "10.15.7", arch: "x86_64", family: "mac"
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> make -version
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GNU Make 3.81
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Copyright (C) 2006 Free Software Foundation, Inc.
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This is free software; see the source for copying conditions.
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There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
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PARTICULAR PURPOSE.
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This program built for i386-apple-darwin11.3.0
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> python --version
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Python 3.9.9
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> node --version
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v17.3.0
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> yarn --version
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1.22.17
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> rpm --version
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RPM version 4.17.0
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> jq --version
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jq-1.6
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```
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### Install pre-commit hooks
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We use pre-commit hooks to run checkstyle for Java and Python and format it as per our coding style.
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Please install the following to format the code during the git commit process
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```shell
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git clone https://github.com/open-metadata/OpenMetadata
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cd openmetadata
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python3 -m venv env
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source env/bin/activate
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pip install pre-commit
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make install_dev
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make install_test precommit_install
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```
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### OpenMetadata API Backend
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We use Java for developing OpenMetadata backend server. Following are the key technologies that we use for the backend:
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- [jsonschema2pojo](https://www.jsonschema2pojo.org/) for Java code generation
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- [Dropwizard](https://www.dropwizard.io/en/latest/) for the web service application
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- [JDBI3](http://jdbi.org/) for database access
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