public static void agentmain()

in winegrower-extension/winegrower-agent/src/main/java/org/apache/winegrower/extension/agent/WinegrowerAgent.java [48:95]
45 lines of code
7 McCabe index (conditional complexity)

    public static void agentmain(final String agentArgs, final Instrumentation instrumentation) {
        if (Boolean.getBoolean("winegrower.agent.started")) {
            return;
        }
        if (DEBUG) {
            print("agentargs: " + agentArgs);
        }

        ofNullable(extractConfig(agentArgs, "libs="))
            .ifPresent(value -> toLibStream(value)
                  .forEach(lib -> {
                      try {
                          instrumentation.appendToSystemClassLoaderSearch(new JarFile(lib));
                      } catch (final IOException e) {
                          throw new IllegalArgumentException(e);
                      }
                  }));

        final Collection<URL> isolatedLibs = ofNullable(extractConfig(agentArgs, "isolatedlibs="))
            .map(value -> toLibStream(value)
                .map(lib -> {
                    try {
                        return lib.toURI().toURL();
                    } catch (final IOException e) {
                         throw new IllegalArgumentException(e);
                    }
                }).collect(toList()))
            .orElseGet(Collections::emptyList);

        final URLClassLoader loader = new WinegrowerAgentClassLoader(
                isolatedLibs,
                toValues(extractConfig(agentArgs, "ignoredParentClasses=")).collect(toList()),
                toValues(extractConfig(agentArgs, "ignoredParentResources=")).collect(toList()));
        final Thread thread = Thread.currentThread();
        final ClassLoader contextualLoader = thread.getContextClassLoader();
        thread.setContextClassLoader(loader);
        try {
            doStart(agentArgs, instrumentation);
        } catch (final Throwable e) {
            final Integer exitStatus = Integer.getInteger("winegrower.agent.exitStatusOnError", -1);
            if (exitStatus > 0) {
                System.exit(exitStatus);
            }
            throw new IllegalStateException(e);
        } finally {
            thread.setContextClassLoader(contextualLoader);
        }
    }