Ballerina-lang: Error installing ballerina plugin for vs code

[christian-posta]

Description:
Trying to install ballerina plugin on VS Code fails

Steps to reproduce:

Affected Versions:
VS Code: 1.29.1 (1.29.1)
Ballerina VS Code plugin: 0.983.0

OS, DB, other environment details and versions:
Mac OS X (10.12.6)

This is what pops up

[xlight05]

https://groups.google.com/forum/#!topic/ballerina-dev/cBPV0cw2pRY

[christian-posta]

Awesome thanks!

On Tue, Nov 27, 2018 at 9:44 PM Anjana Supun [e-mail]
wrote:

https://groups.google.com/forum/#!topic/ballerina-dev/cBPV0cw2pRY

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Christian Posta
twitter: @christianposta
http://blog.christianposta.com http://www.christianposta.com/blog

[christian-posta]

So I'm still seeing errors:

And I get no autocomplete or "intellisense"

The plugin stays installed this time though; it doesn't get kicked out on restart.

VSCode version: 1.29.1
Ballerina VSCode plugin version: 0.983.1

[cartyc]

I am getting similar errors to christian

VSCode Version: 1.29.1
Ballerina VSCode Version: 0.983.1
OSX: 10.14.1

[nadeeshaan]

Can you specify the ballerina version you are using?

[cartyc]

Ballerina 0.983.0

[nadeeshaan]

Can you try with the vscode plugin version 0.983.0?

[cartyc]

I will attempt a downgrade. That version was giving me the same issues the other day.

[nadeeshaan]

Also, try to remove other ballerina plugin versions from the extensions directory

[cartyc]

Hadn't thought to do that. Gave it a try uninstalled and deleted the folders in the extensions dir. Same result, tried with both 0.983.1 and 0.983.0.

[christian-posta]

0.983.0 doesn’t even stay installed on my end, gets removed when VS code
restarts

On Wed, Nov 28, 2018 at 7:39 PM Chris Carty [e-mail]
wrote:

Hadn't thought to do that. Gave it a try uninstalled and deleted the
folders in the extensions dir. Same result, tried with both 0.983.1 and
0.983.0.

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Christian Posta
twitter: @christianposta
http://blog.christianposta.com http://www.christianposta.com/blog

[nadeeshaan]

@christian-posta yesterday there was a security-related concern in vscode market lace and due to that reason, they have automatically removed the extensions. Now they have corrected the issue.

[1] https://groups.google.com/forum/#!searchin/ballerina-dev/Ballerina$20VSCode$20plugin$20was$20unpublished$20from$20marketplace%7Csort:date/ballerina-dev/cBPV0cw2pRY/WYf203sECwAJ

[christian-posta]

yes but i still get errors in the plugin. It's not all that useful at the
moment if it doesn't work

On Wed, Nov 28, 2018 at 8:22 PM Nadeeshaan Gunasinghe <
[email protected]> wrote:

@christian-posta https://github.com/christian-posta yesterday there was
a security-related concern in vscode market lace and due to that reason,
they have automatically removed the extensions. Now they have corrected the
issue.

[1]
https://groups.google.com/forum/#!searchin/ballerina-dev/Ballerina$20VSCode$20plugin$20was$20unpublished$20from$20marketplace%7Csort:date/ballerina-dev/cBPV0cw2pRY/WYf203sECwAJ

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https://github.com/ballerina-platform/ballerina-lang/issues/11958#issuecomment-442692490,
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--
Christian Posta
twitter: @christianposta
http://blog.christianposta.com http://www.christianposta.com/blog

[nadeeshaan]

@christian-posta can you provide the following information?

• You have installed the ballerina v0983.0
• You have installed the ballerina vscode plugin version 0.983.1
• If you have set ballerina.home in vscode settings.json, please remove it
• You have installed VSCode 1.26.0 or higher.
• Also, can you provide us the output you get for $BALLERINA_HOME?
• If you are getting further errors what are the errors you are seeing?

[kaviththiranga]

I am not seeing this issue with plugin version 0.983.1 too.

[kaviththiranga]

@christian-posta, @cartyc can you open the extensions tab and see whether there are two Ballerina extensions are listed as installed. One with the id ballerina.ballerina and another one with ballerina.ballerina-temp, both versioned as 0.983.1.
One with the id suffix "-temp" was shared in the thread as a workaround for those who were blocked and needed an immediate fix - as we were not sure about the time it takes to get the extension republished in market place.
If this is the case, please uninstall the one with id "ballerina.ballerina-temp" and see.

[cartyc]

@kaviththiranga I only have the one listed.

[cartyc]

@kaviththiranga Is there anything else I can provide to help?

[NipunaMarcus]

Can you please provide some details for the points mentioned in this comment?
https://github.com/ballerina-platform/ballerina-lang/issues/11958#issuecomment-442907471

Specially the 3rd point and the last two points as you have provided details on other points....

[cartyc]

• You have installed the ballerina vscode plugin version 0.983.1
  Yes I have. The previous version 0.981.1 worked with no issue.

• If you have set ballerina.home in vscode settings.json, please remove it
  This is the current setting in vscode "ballerina.home": ""

• Also, can you provide us the output you get for $BALLERINA_HOME?
  echoing $BALLERINA_HOME returns nothing.

• If you are getting further errors what are the errors you are seeing?
  I haven't gotten any other errors aside from what I've outlined already. I will share if I do.

[rasika]

@cartyc Please remove below entry from the settings.json. I can reproduce the same issue when having below entry.

"ballerina.home": ""

Also If you have installed ballerina using homebrew there's a known issue https://github.com/ballerina-platform/ballerina-lang/issues/9724. You need to set "ballerina.home": "/usr/local/Cellar/ballerina/0.983.0/libexec" specifically.

[ponsilva]

Hi, today I'am getting similar error
Unknown Error : Failed to start Ballerina Plugin

My environment
Ballerina 0.983.0
VSCode version: 1.29.1
Ballerina VSCode plugin version: 0.983.1 (from marketplace)
OS: Windows

In the output window I found the exception:

java.lang.UnsupportedClassVersionError: org/ballerinalang/langserver/launchers/stdio/Main : Unsupported major.minor version 52.0
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:791)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
    at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482)
Exception in thread "main" [Info  - 2:51:43 PM] Connection to server got closed. Server will restart.

After some retry with failure:
Exception in thread "main" [Error - 2:51:54 PM] Connection to server got closed. Server will not be restarted.

[rasika]

Hi @ponsilva No, that's a different issue.

Unsupported major.minor version 52.0 means you are running ballerina on-top of an older JRE(less than JRE8).

By any means did you download zip distribution? I recommend you to download platform-specific distribution to make things straight forward.

[ponsilva]

I installed Ballerina using ballerina-windows-installer-x64-0.983.0.msi
I check again my env variables, thanks

[cartyc]

It has been removed, my settings.json now looks like.
{
"window.zoomLevel": -1,
"extensions.autoUpdate": false,
}

Same error. I did not install using the homebrew install rather through the macOS package from ballerina.io. I had installed a previous version of Ballerina through homebrew but uninstalled it a while ago, maybe there is something hanging on.

[hevayo]

@cartyc , @christian-posta, Sorry for the trouble with the plugin. We tried diffrent cases but still couldn’t figure out the cause for the issue. Can you please try the following to help us to find the root cause.

• Verify if the Ballerina version detected by the plugin is correct.

In settings, set “ballerina.debugLog” to true and restart VSCode. Next, open Ballerina output channel in VScode output window. You should be able to see the Ballerina installation that the plugin is using as shown below. Please verify whether it matches v0.983.0 installation dir in your machine.

• Check if languageserver script is working properly.

Under the hood, plugin is using a shell script to start language-server. It is located at <ballerina.home>/lib/tools/lang-server/launchers/language-server-launcher.bat (for osx and linux, there is a sh file). Can you try starting that sh/bat file directly. It should start without displaying any error and you should see no output if it starts correctly, the process will just hang on.

• Try with manually setting ballerina.home.

Alternatively, you can manually set the “ballerina.home” directory path in VSCode settings. If you set ballerina.home in settings plugin will pick that without trying to autodetect ballerina home and plugin should work normally.

[cartyc]

@hevayo Thanks for taking the time to help troubleshoot this

I ran the language server and I got the following output:
sh /Library/Ballerina/ballerina-0.983.0/lib/tools/lang-server/launcher/language-server-launcher.sh Error: Ballerina is supported only on JDK 1.8

So I checked which java version:
java -version java version "9.0.1" Java(TM) SE Runtime Environment (build 9.0.1+11) Java HotSpot(TM) 64-Bit Server VM (build 9.0.1+11, mixed mode)

Looks like that might be the issue?

[kaviththiranga]

@cartyc, thanks for the info. Yes, this seems to be the issue. Ideally it should be using the JRE provided by Ballerina installer, but seems this is a bug in the script. We will fix this for the next release and meanwhile provide you a script with the fix, soon.

[cartyc]

Thanks that sounds great. Looking forward to the fix 😊

[kaviththiranga]

@cartyc fix is merged and will be available with next release.
https://github.com/ballerina-platform/ballerina-lang/pull/12226
Please apply the diff to script in your local installation dir. Uploading shell scripts is not allowed on github, hence I am unable to provide it here.
Thanks.

[cartyc]

I just gave the new script a test and it works!

Thanks so much @kaviththiranga

[ponsilva]

In Windows, I had to set JAVA_HOME as
C:\Programmi\Ballerina\ballerina-0.983.0\bre\lib\jre1.8.0_172
before running VS Code and then it works.

[ponsilva]

JAVA_HOME in my environment is set by default to
C:\Programmi\Java\jdk1.7.0_21

[kaviththiranga]

@ponsilva, thanks for the information. We will investigate the lang-server script for Windows and get back to you. Initially we could find the issue only in sh file, hence the fix only addressed it.

[jeradrutnam]

@ponsilva - Thanks. We were able to reproduce the issue. We'll fix it and give an update.

[jeradrutnam]

@ponsilva - Fixed issue in #12316 and it will be available in the next release.

For the time being please apply the diff to the script in your local installation directory (e.g. C:\Program Files\Ballerina\ballerina-0.983.1\lib\tools\lang-server\launcher\language-server-launcher.bat). Uploading shell scripts is not allowed on GitHub, hence I am unable to provide it here.

Thanks.

[ponsilva]

Using the updated language-server-launcher.bat VS Code starts Ballerina Plugin without errors.

Thanks @jeradrutnam

[hevayo]

Closing since all the issues are resolved. Please reopen if you think otherwise.