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Opened 6 weeks ago

Last modified 6 weeks ago

#17083 assigned enhancement

Create jlink native runtimes

Reported by: Don-vip Owned by: Don-vip
Priority: normal Milestone:
Component: Core Version:
Keywords: java11 javafx webstart Cc: stoecker, simon04, floscher, michael2402, wiktorn

Description

With the end of Java WebStart and public JRE availability from Oracle (end of 2020) we need to find another deployment technology that matches our needs:

  • still offer a simple jar for power users, and Linux distributions that include the Java and JavaFX runtimes, as they manage the security updates themselves
  • provide a simple way for Windows and macOS users to get JOSM, Java and JavaFX runtimes
  • provide a light mechanism to get JOSM latest updates every day
  • make sure users get Java security updates if we ship the runtimes ourselves

Java 9 introduced a new tool (jlink) to create custom Java runtimes that only include the classes needed for an application. It allows to create smaller runtimes and also gives a significant boost when starting the JVM (less stuff to load).

I never considered it seriously until today because jlink does not allow cross-platform builds. So if we go this way, we need to get three build servers (Linux, Windows, macOS).

I found today an open source project that managed to do it. The results in size are quite impressive (less than 40 Mb). This is achieved using Azure Pipelines: Microsoft provides a free offer for open source projects (10 free parallel jobs with unlimited minutes).

I will try to build native runtimes with OpenJDK 11, JavaFX 11 and JOSM to see if it works :)

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Change History (1)

comment:1 Changed 6 weeks ago by Don-vip

Summary: Create jlink native runtimes using Azure PipelinesCreate jlink native runtimes

Ah it seems I totally misunderstood what jlink was capable of. We cannot create a single image that runs on different OS, but we should be able on a given host to create images targeted for a different OS. So we might not need the Microsoft offer at all, if we can create the images on our Linux server.

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