move to async profiler 4.2

[fggarcia]

This pull request removes experimental converters for "hotcold" and "pprof" formats, simplifies output types, and updates dependencies. The main impact is the removal of support for "hotcold" and "nflx" output types, as well as the associated converter implementations. Additionally, there are minor improvements to string padding logic and a dependency update.

Removal of experimental converters and output types:

• Deleted the jfr2hotcoldflame and jfr2pprof experimental converter implementations, removing support for hot/cold flame graphs and pprof conversion (src/main/java/io/github/dpsoft/ap/converters/experimental/hotcold/jfr2hotcoldflame.java, src/main/java/io/github/dpsoft/ap/converters/experimental/pprof/jfr2pprof.java) [1] [2].
• Removed the experimental package-info and related import statements, fully cleaning up unused experimental code (src/main/java/io/github/dpsoft/ap/converters/experimental/package-info.java, src/main/java/io/github/dpsoft/ap/util/ProfilerExecutor.java) [1] [2].

Simplification of output types and logic:

• Removed HOT_COLD and NFLX output types from the Output enum and related logic in Command.java, so these formats are no longer available as output options (src/main/java/io/github/dpsoft/ap/command/Command.java) [1] [2].

Dependency and code improvements:

• Updated the me.bechberger.ap-loader.version property in pom.xml to a newer version, ensuring compatibility with recent changes.
• Simplified the string padding logic in Functions.java to use modern Java features for cleaner code (src/main/java/io/github/dpsoft/ap/functions/Functions.java).

[Copilot]

Pull request overview

This pull request upgrades the async-profiler dependency from version 2.9-6 to 4.2-10 and removes experimental converter implementations. The changes simplify the codebase by removing support for hot/cold flame graphs and Netflix FlameScope output formats, while updating the integration with the newer async-profiler API.

• Updated async-profiler loader dependency from version 2.9-6 to 4.2-10
• Removed experimental converter classes and the HOT_COLD and NFLX output types
• Refactored output conversion logic to use new converter classes from the updated dependency
• Fixed a bug in string padding logic

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
pom.xml	Updates ap-loader dependency version to 4.2-10 to support async-profiler 4.2
src/main/java/io/github/dpsoft/ap/command/Command.java	Removes HOT_COLD and NFLX output enum values and updates shouldCompress() logic
src/main/java/io/github/dpsoft/ap/util/ProfilerExecutor.java	Migrates from one.converter.* to one.convert.* package, refactors conversion methods to use new converter classes, and extracts getArguments() helper method
src/main/java/io/github/dpsoft/ap/functions/Functions.java	Simplifies padString() implementation using String.repeat() and fixes off-by-one padding bug
src/main/java/io/github/dpsoft/ap/converters/experimental/pprof/jfr2pprof.java	Deletes experimental pprof converter (now provided by dependency)
src/main/java/io/github/dpsoft/ap/converters/experimental/hotcold/jfr2hotcoldflame.java	Deletes experimental hot/cold converter implementation
src/main/java/io/github/dpsoft/ap/converters/experimental/hotcold/HotColdFlameGraph.java	Deletes experimental hot/cold flame graph visualization class
src/main/java/io/github/dpsoft/ap/converters/experimental/package-info.java	Removes package documentation for deleted experimental package
src/main/java/one/converter/CollapsedStacks.java	Deletes CollapsedStacks class (now provided by updated dependency)
src/main/java/one/converter/Arguments.java	Deletes Arguments class (now provided by updated dependency in one.convert package)

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[dpsoft]

@fggarcia awesome!!