How to use

of

method

in

org.ballerinalang.util.metrics.Tag

/**
 * Populate tags from a key/value pair.
 *
 * @param tags  An existing set of {@link Tag Tags}.
 * @param key   The tag key.
 * @param value The tag value.
 */
public static void tag(Set<Tag> tags, String key, String value) {
  tags.add(Tag.of(key, value));
}

  /**
   * Populate tags from a map of key/value pairs.
   *
   * @param tags    An existing set of {@link Tag Tags}.
   * @param tagsMap A map of key value pairs to be used as tags
   */
  public static void tags(Set<Tag> tags, Map<String, String> tagsMap) {
    tagsMap.forEach((key, value) -> tags.add(Tag.of(key, value)));
  }
}

/**
 * Populate tags from key/value pairs.
 *
 * @param tags      An existing set of {@link Tag Tags}.
 * @param keyValues Must be an even number of arguments representing key/value pairs of tags.
 */
public static void tags(Set<Tag> tags, String... keyValues) {
  if (keyValues == null || keyValues.length == 0) {
    return;
  }
  if (keyValues.length % 2 == 1) {
    throw new IllegalArgumentException("size must be even, it is a set of key=value pairs");
  }
  for (int i = 0; i < keyValues.length; i += 2) {
    tags.add(Tag.of(keyValues[i], keyValues[i + 1]));
  }
}