Java Code Examples for org.apache.kafka.common.config.ConfigDef#Recommender

protected ConfigDef.Recommender getDefaultRecommender(Method method) {
  CustomTypeHandler<?> customTypeHandler = customTypeMap.get(method.getReturnType());
  if (customTypeHandler != null) {
    ConfigDef.Recommender v = customTypeHandler.recommender();
    if (v != null) {
      return v;
    }
  }

  if (method.getReturnType().isEnum()) {
    //noinspection unchecked
    return new EnumRecommender((Class<? extends Enum<?>>) method.getReturnType());
  }

  return null;
}
 

@Test
public void visible() {
  ConfigDef.Recommender recommender = Recommenders.enumValues(TestEnum.class);
  final List<Object> actual = recommender.validValues("asdf", ImmutableMap.of());
  final List<Object> expected = ImmutableList.copyOf(Arrays.stream(TestEnum.values()).map(Enum::toString).toArray());
  assertEquals(expected, actual);
}
 

@Test
public void validateDefault() {
  final ConfigDef.Recommender recommender = Recommenders.charset();
  final List<Object> expected = ImmutableList.copyOf(Charset.availableCharsets().keySet());
  final List<Object> actual = recommender.validValues("foo", ImmutableMap.of());
  assertEquals(expected, actual);
  assertTrue(recommender.visible("foo", ImmutableMap.of()));
}
 

@Test
public void minimalDefault() {
  final ConfigDef.Recommender recommender = Recommenders.charset(VisibleCallback.ALWAYS_VISIBLE, Charsets.UTF_8.name());
  final List<Object> expected = ImmutableList.of(Charsets.UTF_8.name());
  final List<Object> actual = recommender.validValues("foo", ImmutableMap.of());
  assertEquals(expected, actual);
  assertTrue(recommender.visible("foo", ImmutableMap.of()));
}
 

protected ConfigDef.Recommender getRecommender(Method method) {
  ConfigDef.Recommender userProvided = (ConfigDef.Recommender) invokeCompanion(method, "Recommender");
  if (userProvided != null) {
    return userProvided;
  }
  return getDefaultRecommender(method);
}
 

public ConfigDef.Recommender recommender() {
  return this.recommender;
}
 

public static ConfigDef.Recommender enumValues(Class<?> enumClass, String... excludes) {
  return enumValues(enumClass, VisibleCallback.ALWAYS_VISIBLE, excludes);
}
 

public static ConfigDef.Recommender enumValues(Class<?> enumClass, VisibleCallback visible, String... excludes) {
  return new EnumRecommender(enumClass, visible, excludes);
}
 

public static ConfigDef.Recommender charset() {
  return charset(VisibleCallback.ALWAYS_VISIBLE, Charset.availableCharsets().keySet());
}
 

public static ConfigDef.Recommender charset(VisibleCallback visible) {
  return charset(visible, Charset.availableCharsets().keySet());
}
 

public static ConfigDef.Recommender charset(VisibleCallback visible, String... charsets) {
  return charset(visible, ImmutableList.copyOf(charsets));
}
 

public static ConfigDef.Recommender charset(VisibleCallback visible, Iterable<String> charsets) {
  return new CharsetRecommender(charsets, visible);
}
 

@Test
public void visible() {
  ConfigDef.Recommender recommender = Recommenders.visibleIf("ssl.enabled", true);
  assertTrue(recommender.visible("somekey", ImmutableMap.of("ssl.enabled", true)));
  assertFalse(recommender.visible("somekey", ImmutableMap.of("ssl.enabled", false)));
}
 

default ConfigDef.Recommender recommender() {
  return null;
}
 

/**
 * Method is used to return a recommender that will mark a ConfigItem as visible if
 * the configKey is set to the specified value.
 *
 * @param configKey The setting to retrieve the value from.
 * @param value     The expected value.
 * @return recommender
 */
public static ConfigDef.Recommender visibleIf(String configKey, Object value) {
  return new VisibleIfRecommender(configKey, value, ValidValuesCallback.EMPTY);
}
 

/**
 * Method is used to return a recommender that will mark a ConfigItem as visible if
 * the configKey is set to the specified value.
 *
 * @param configKey           The setting to retrieve the value from.
 * @param value               The expected value.
 * @param validValuesCallback The expected value.
 * @return recommender
 */
public static ConfigDef.Recommender visibleIf(String configKey, Object value, ValidValuesCallback validValuesCallback) {
  return new VisibleIfRecommender(configKey, value, validValuesCallback);
}