Fiji Updater

The Fiji Updater is a mechanism to update individual components of Fiji. It keeps users up-to-date with everything an installation is made of, including both plugins and the core libraries those plugins need.

The Updater can handle 3rd-party update sites: anybody with write access to a web server can set up their own update site which users can decide to follow.

For more details, see the Updater page on the ImageJ wiki.

History

This component was previously published as net.imagej:imagej-updater, in the imagej/imagej-updater repository. It was renamed because the name had stopped describing the thing: the Updater is the mechanism that maintains Fiji installations, it encodes Fiji's directory layout and launcher conventions, and it was called the Fiji Updater originally.

The rename also opened up the API, which had been frozen by its coordinates for a long while. Expect 3.x to differ from 2.x wherever that made the tool better.

Platform naming conventions

The Updater uses a so-called short platform name for each OS+arch combo. These names are used in the Updater's db.xml.gz files, as well as for platform-specific subdirectories beneath the jars, lib, and java folders.

Operating system	Architecture	Short platform name	Long platform name
Linux	x86 32-bit	linux32	N/A
Linux	x86 64-bit	linux64	linux-x64
Linux	ARM 64-bit	linux-arm64	linux-arm64
macOS	x86 64-bit	macos64	macos-x64
macOS	ARM 64-bit	macos-arm64	macos-arm64
Windows	x86 32-bit	win32	N/A
Windows	x86 64-bit	win64	windows-x64
Windows	ARM 64-bit	win-arm64	windows-arm64
Linux	any	linuxx¹	N/A
macOS	any	macosx²	N/A
Windows	any	winx³	N/A

¹ The linuxx platform is a group encompassing linux-arm64 and linux64. ² The macosx platform is a group encompassing macos-arm64 and macos64. ³ The winx platform is a group encompassing win-arm64 and win64.

The long platform names only appear in the filenames of Jaunch-based native launcher binaries, as well as in the filenames of the Fiji latest downloads.