RFR: 8342035: jlink plugins for setting java.vendor, java.vm.vendor and java.vendor.url

[Alan Bateman]

On Thu, 7 Nov 2024 21:38:28 GMT, Henry Jen <henryjen at openjdk.org> wrote:

> Add jlink plugins to allow branding change for java.vendor, java.vm.vendor and java.vendor.url.
> 
> The jlink plugin will change the value in java.lang.VersionProps, which will set those property values. The `java.vm.vendor` was initialized by VM with value set at build time, and then later be replaced with value from VersionProps.
> 
> To keep current behavior, we treat 'N/A' value as no-op to mimic current build behavior. Perhaps we don't really need this, as proper value should be set with `branding.conf` in official build.

src/java.base/share/classes/java/lang/VersionProps.java.template line 131:

> 129:         // Default branding.conf value is "N/A", which did not affect java.vm.vendor
> 130:         if (! VENDOR_VM.equals("N/A")) {
> 131:             props.put("java.vm.vendor", VENDOR_VM);

Magnus might have suggestions on this, maybe it would be better to default in the conf file to the empty string so that we don't have to deal with "N/A" in several places.

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/21964#discussion_r1866399627