content: /*
   * Copyright The OpenTelemetry Authors
   * SPDX-License-Identifier: Apache-2.0
   */
  
  package io.opentelemetry.instrumentation.spring.autoconfigure.internal;
  
  import io.opentelemetry.sdk.autoconfigure.spi.internal.DefaultConfigProperties;
  import java.util.Collections;
  import java.util.Map;
  import org.springframework.core.convert.converter.Converter;
  
  /**
   * The MapConverter class is used to convert a String to a Map. The String is expected to be in the
   * format of a comma separated list of key=value pairs, e.g. key1=value1,key2=value2.
   *
   * <p>This is the expected format for the <code>OTEL_RESOURCE_ATTRIBUTES</code> and <code>
   * OTEL_EXPORTER_OTLP_HEADERS</code> environment variables.
   *
   * <p>This class is internal and is hence not for public use. Its APIs are unstable and can change
   * at any time.
   */
  public class OtelMapConverter implements Converter<String, Map<String, String>> {
  
    public static final String KEY = "key";
  
    @Override
    public Map<String, String> convert(String source) {
      DefaultConfigProperties properties =
          DefaultConfigProperties.createFromMap(Collections.singletonMap(KEY, source));
  
      return properties.getMap(KEY);
    }
  }
  