RFR: 7167: Agent Plugin

[Joshua Matsuoka]

On Fri, 12 Mar 2021 12:09:54 GMT, Marcus Hirt <hirt at openjdk.org> wrote:

>> This PR adds the Agent Plugin to JMC. This is a plugin for controlling the jmc agent and provides a way to attach it and add probes to any JVMs in the JVM browser, as well as providing a preset manager for creating/modifying probe presets.
>> 
>> There is still a small amount of cleanup to be done so I'll mark it as a draft for now but it would be great to get a review :)
>
> New plug-ins must have both 16x16 and 32x32 pixel versions of icons, and preferably also either a vector version, or a higher resolution variant checked into jmc-graphics. Let me know if you need help inventing something. :)

I see. Do you have any ideas/preferences for what the icon should look like for the agent plugin?

> application/org.openjdk.jmc.console.ext.agent/plugin.xml line 3:
> 
>> 1: <?xml version="1.0" encoding="UTF-8"?>
>> 2: <!--   
>> 3:    Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
> 
> 2021 now.

These files were created in 2020 but at the same time they'd be new files in JMC, would you prefer if we updated the headers to just 2021, or can we do 2020, 2021 like other files created in 2020?

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PR: https://git.openjdk.java.net/jmc/pull/226