RESTful access to the JVM info?

[broconne]

Is there a way to access the JVM heap info over HTTP? I checked the sagex api and didn't see a method to access JVM or heap information.

[wayner]

timranda should know - he wrote the JVM heap monitor plugin for the UI. But I think he is in the middle of moving right now.

And stuckless would know as well. You might be able to tell how the WebUI gets this info from the jar file that it uses. Presumably it uses an API method that you could access from sagex. Although I guess it is also possible that it uses a Java system command.

[stuckless]

Originally Posted by broconne

Is there a way to access the JVM heap info over HTTP? I checked the sagex api and didn't see a method to access JVM or heap information.

Well, in theory, you can access any java api via sagex remote apis. This is mainly true, because the STV allows you to embed java calls directly, albeit in a convoluted way.

http://192.168.1.10:8080/sagex/api?c=EvaluateExpression&1=java_lang_Runtime_freeMemory(java_lang_Runtime_getRuntime())&encoder=json]

Would return the jvm free Memory.

EvaluateExpression is documented here

http://192.168.1.10:8080/sagex/api?q=Evaluate

[broconne]

Originally Posted by stuckless

Well, in theory, you can access any java api via sagex remote apis. This is mainly true, because the STV allows you to embed java calls directly, albeit in a convoluted way.

http://192.168.1.10:8080/sagex/api?c=EvaluateExpression&1=java_lang_Runtime_freeMemory(java_lang_Runtime_getRuntime())&encoder=json]

Would return the jvm free Memory.

EvaluateExpression is documented here

http://192.168.1.10:8080/sagex/api?q=Evaluate

Perfect! Thanks!