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JMX metrics gathering Groovy script runner

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/*
 * Copyright The OpenTelemetry Authors
 * SPDX-License-Identifier: Apache-2.0
 */

package io.opentelemetry.contrib.jmxmetrics;

import static java.nio.charset.StandardCharsets.UTF_8;

import groovy.lang.Binding;
import groovy.lang.GroovyShell;
import groovy.lang.Script;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URI;
import java.net.URL;
import java.nio.file.FileSystem;
import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.codehaus.groovy.control.CompilationFailedException;

public class GroovyRunner {
  private static final Logger logger = Logger.getLogger(GroovyRunner.class.getName());

  private final List