jupyterhub/repo2docker

Add support for Java

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#780 建立於 2019年9月7日

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 (6 留言) (0 反應) (0 負責人)Python (1,544 star) (358 fork)batch import
enhancementhelp wantedneeds: discussion

描述

Proposed change

Add support for installing Java and Java build tools.

Relevant package managers:

  • Maven triggered by pom.xml
  • Ant triggered by build.xml
  • Gradle triggered by gradle.build

What the BuildPack would do is

  • install Java (anything speaking against always installing the JDK?), matching the version configured in the configuration file
    • Java 8, 11, 12, and 13 are available from default sources, which seems enough options
$ docker run --rm -it buildpack-deps:bionic apt-get update && apt-cache search openjdk | grep Kit
[..]                                                  
Fetched 17.1 MB in 15s (1115 kB/s)                                                                                                            
Reading package lists... Done
default-jdk - Standard Java or Java compatible Development Kit
default-jdk-doc - Standard Java or Java compatible Development Kit (documentation)
default-jdk-headless - Standard Java or Java compatible Development Kit (headless)
openjdk-11-doc - OpenJDK Development Kit (JDK) documentation
openjdk-11-jdk - OpenJDK Development Kit (JDK)
openjdk-11-jdk-headless - OpenJDK Development Kit (JDK) (headless)
openjdk-11-source - OpenJDK Development Kit (JDK) source files
openjdk-12-doc - OpenJDK Development Kit (JDK) documentation
openjdk-12-jdk - OpenJDK Development Kit (JDK)
openjdk-12-jdk-headless - OpenJDK Development Kit (JDK) (headless)
openjdk-12-source - OpenJDK Development Kit (JDK) source files
openjdk-13-doc - OpenJDK Development Kit (JDK) documentation
openjdk-13-jdk - OpenJDK Development Kit (JDK)
openjdk-13-jdk-headless - OpenJDK Development Kit (JDK) (headless)
openjdk-13-source - OpenJDK Development Kit (JDK) source files
openjdk-8-doc - OpenJDK Development Kit (JDK) documentation
openjdk-8-jdk - OpenJDK Development Kit (JDK)
openjdk-8-jdk-headless - OpenJDK Development Kit (JDK) (headless)
openjdk-8-source - OpenJDK Development Kit (JDK) source files
  • install the build tool
  • run the build tool (Is there a need or a good way to define the used options?)

Alternative options

Users would have to install Java and build tools/project managers manually, e.g. using postBuild.

Who would use this feature?

Java users.

How much effort will adding it take?

Depending on how many build tools are supported (could of course be added later) I guess 2 days of work. A good part of that would be to create different project configurations for tests.

Who can do this work?

Somebody familiar with BuildPacks and Java, and the different Java build tools.

貢獻者指南

技術棧
javadocker
領域
backendinfrastructurebuild system
議題類型
feature
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
4
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-2 days
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
clear
前置要求
Understanding of repo2docker buildpacksFamiliarity with Java build tools (Maven, Gradle, Ant)Basic Docker knowledge
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
30
研究方向
Study existing buildpacks in repo2docker (e.g., Python, R) to understand the pattern. The maintainers have discussed how to handle multiple Java versions and build tools. Look at the comments in the issue for specific suggestions on implementation. The key files to modify are likely in the repo2docker/buildpacks directory. Create a new Java buildpack that detects pom.xml, build.xml, or gradle.build, installs the appropriate JDK and build tool, then runs the build.