Split Entries for JDK 8 and 11

[JoelProminic]

We want to start using JDK 11 as the default JDK for Moonshine to better support the language server. However, we have some features and pending features that use the HCL Domino API, which requires JDK 8.

To support this, we want to have two entries for Java in Moonshine SDK Installer:

Label	Required For	Notes
OpenJDK	Java Development, Editor Enhancements, Flex/ActionScript Compilation and Debug, Feathers Compilation, Apache Ant Integration, PrimeFaces Project Preview	This will be JDK 11.
OpenJDK 8	Domino Support

I was surprised that the The "Java Development" feature is new - it seemed odd that this was not added before. Here is a description:

Compile Java Applications

We will need to store the two SDKs separately in Moonshine. We can discuss the options for this in a Moonshine issue.

[rat-moonshine]

So a new feature entry is being added - Java Development. Currently this adds into this ordering, we can change this though:

Addition of the newer JDK 8 entry now looks like this, when the existing entry now pointed to download JDK 11:

Version number also added #39 .

The only problem that currently I'm seeing is download-ability. Currently, the mechanism to determine if Java installed (and adding a downloaded tick) works in following ways:

1. Checks if already setup in Moonshine Settings (when running inside Moonshine)
2. Check by the named directory under the MoonshineSDKs
3. Check if the JAVA_HOME exists in system environment variable

Since I have JAVA_HOME added to environment variable it immediately marks both the JDK entries as downloaded (and need not any further action). This maybe Okay against the usual JDK entry, but for JDK8 user may requires to have it downloaded explicitly, for which we may avail some option like re-download (in case of Royale Nightly) or something.

Thoughts are welcome.

[rat-moonshine]

Currently, we don't have a version check mechanism for Java, and neither for any other SDK other than Flex. This may create problem when:

• User already has JAVA_HOME set to v8.0
• We wants to push v11.0
• SDK Installer marked the JDK-entry is present based on the JAVA_HOME present
• JDK v11.0 entry do not have a download button

[JoelProminic]

Moonshine SDK Installer will need to check the Java version at least.

If there are Java directories in MoonshineSDKs, iterate through them and:

• Assign the latest version >= 11.0 to the OpenJDK entry
• Assign the latest version of Java 1.8 to the OpenJDK 8 entry
• Ignore versions < 1.8

Then, check JAVA_HOME

• if the version is > 11.0, then assign it to OpenJDK if it is not assigned already
• if the version is 1.8, then assign it to OpenJDK 8 if it is not assigned already
• if the version is < 1.8, then ignore it.

If OpenJDK or OpenJDK 8 does not have a matching JDK assigned, then they should be conidered uninstalled.

[rat-moonshine]

Some updates until now:

• Moonshine now has two pointers to setup JDK-default (v11) and JDK v8
• MSKDI updated to detect availability of the JDK versions based on the logic it has, and discussed recently
• Both the JDK path/settings auto-setup by MSDKI codes if applicable
• Based on the found Java-version MSDKI set the appropriate JDK path in Moonshine settings

This still in a starting stage of the development, problems may found, and needs more tests.

[JoelProminic]

I did a quick test with the standard use case on macOS, and the Moonshine SDK Installer use cases look good. The Installer logic also worked.

Here is a test matrix based on the logic we discussed above. Let me know if there are any missing cases, or if some cases are not possible to test:

OS	MoonshineSDKs	Environnment	OpenJDK	OpenJDK 8	Test Results
macOS	JDK 8 only	N/A	Missing	Installed	Confirmed
macOS	JDK 6 only	N/A	Missing	Installed
macOS	Both JDK 8 and 11	N/A	Installed	Installed	Confirmed
macOS	JDK 11 only	N/A	Installed	Missing	Confirmed
macOS	No JDK	N/A	Missing	Missing	Confirmed
Windows	JDK 8 only	Not Set	Missing	Installed	Confirmed
Windows	JDK 8 only	JDK 6	Missing	Installed (8)	Confirmed
Windows	JDK 8 only	JDK 11	Installed	Installed	Confirmed
Windows	JDK 11 only	Not Set	Installed	Missing	Confirmed
Windows	JDK 11 only	JDK 8	Installed	Installed	Confirmed
Windows	JDK 11 only	JDK 15	Installed (11)	Missing	Confirmed
Windows	Both JDK 8 and 11	Any	Installed	Installed	Confirmed
Windows	Both JDK 8 and 11	Not Set	Installed	Installed	Confirmed
Windows	No JDK	JDK 6	Missing	Missing	Confirmed
Windows	No JDK	JDK 15	Installed	Missing	Confirmed

I excluded the cases where different versions of the JDK appear in MoonshineSDKs, since this shouldn't happen without manual intervention from the user.

The logic was not working like I expected on the Moonshine side, but we'll discuss this in Moonshine-IDE/Moonshine-IDE#755

[rat-moonshine]

I have updated the above test-matrix with more entries I could think about, with some fixes.

However, I couldn't able to get a full tests on macOS since download problem of OpenJDK versions. While I tried to download v11 or v15 from https://adoptopenjdk.net/releases.html site, resulting tar.gz file always extracts a single file instead of a directory in my tests.

I see the resulting file has 'bin' folder inside it, if I right-click on the file and chose "Show Package Content". But extract-out those files on a directory and if try running on Terminal (i.e. java -version), macOS refused to run the executable.

For now, I leave the macOS tests at my side.

[JoelProminic]

I noticed that the "Required for" list for OpenJDK 8 is: Java Development, Domino Support

I'd like to keep OpenJDK as the only requirement for Java Development, so that the user doesn't feel like they need to install both if they don't specifically need JDK 8.

[JoelProminic]

In my macOS tests, I see that OpenJDK 8 now installs with this path:

~/Downloads/MoonshineSDKs/Java/openjdk-1.8.0/Contents/Home/bin/java

This causes the OpenJDK 8 check to fail, since it expects this path

~/Downloads/MoonshineSDKs/Java/openjdk-1.8.0/bin/java

The OpenJDK (11) install matches the second pattern above.

[rat-moonshine]

I have fixed the problem where JDK 11 was unzipping properly but JDK 8 - and the resulting JDK 8 directory left an .app file like structure.

Here is some notes on the fix, I see I did some weird handling for the JDK particularly where it involves looking into Contents/Home structure - https://github.com/prominic/Moonshine-SDK-Installer/blob/features/issue_38_jdk11/MoonshineSDKInstaller/src/components/HelperInstaller.mxml#L344. Until now it was triggering for the default-JDK only, once I added JDK8 into the condition it also starts downloading in an expected way.

I'd like to keep OpenJDK as the only requirement for Java Development, so that the user doesn't feel like they need to install both if they don't specifically need JDK 8.

I have removed JDK8 'Java Development' criteria.

[JoelProminic]

I think this logic is working well. It should be fine to merge this, as long as it is not a problem if the Moonshine-IDE/Moonshine-IDE#755 changes are not merged yet - that issue needs more work.

[piotrzarzycki21]

I'm not sure why we have miss that during our review. This seems to be ready. Can we close it ?

[JoelProminic]

Yeah, the MSDKI side of this seems fine, though there are some remaining issues on the Moonshine side (Moonshine-IDE/Moonshine-IDE#755).