io.helidon.config.Config.asNode()方法的使用及代码示例

x33g5p2x  于2022-01-18 转载在 其他  
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本文整理了Java中io.helidon.config.Config.asNode()方法的一些代码示例，展示了Config.asNode()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Config.asNode()方法的具体详情如下：
包路径：io.helidon.config.Config
类名称：Config
方法名：asNode

Config.asNode介绍

[英]Returns existing current config node as a Optional instance or Optional#empty() in case of Type#MISSING node.
[中]将现有的当前配置节点作为可选实例返回，如果类型#缺少节点，则返回可选的#empty（）。

代码示例

代码示例来源：origin: oracle/helidon

/**
 * Performs the given action with the config node if node
 * {@link #exists() exists}, otherwise does nothing.
 *
 * @param action the action to be performed if the node exists
 * @see #exists()
 * @see #type()
 */
default void ifExists(Consumer<Config> action) {
  asNode().ifPresent(action);
}

代码示例来源：origin: oracle/helidon

public <T> Function<T, Supplier<PollingStrategy>> apply(Config config, Class<T> targetType)
    throws ConfigMappingException, MissingValueException {
  Config properties = config.get(PROPERTIES_KEY) // use properties config node
      .asNode()
      .orElse(Config.empty(config)); // or empty config node
  return OptionalHelper.from(config.get(TYPE_KEY).asString() // `type` is specified
                    .flatMap(type -> this
                        .builtin(type, properties, targetType))) // return built-in polling strategy
      .or(() -> config.get(CLASS_KEY)
          .as(Class.class) // `class` is specified
          .flatMap(clazz -> custom(clazz, properties, targetType))) // return custom polling strategy
      .asOptional()
      .orElseThrow(() -> new ConfigMappingException(config.key(), "Uncompleted polling-strategy configuration."));
}

代码示例来源：origin: oracle/helidon

@Override
public RetryPolicy apply(Config config) throws ConfigMappingException, MissingValueException {
  Config properties = config.get(PROPERTIES_KEY) // use properties config node
      .asNode()
      .orElse(Config.empty(config)); // or empty config node
  return OptionalHelper.from(config.get(TYPE_KEY).asString() // `type` is specified
      .flatMap(type -> this.builtin(type, properties))) // return built-in retry policy
      .or(() -> config.get(CLASS_KEY)
          .as(Class.class) // `class` is specified
          .flatMap(clazz -> custom(clazz, properties))) // return custom retry policy
      .asOptional()
      .orElseThrow(() -> new ConfigMappingException(config.key(), "Uncompleted retry-policy configuration."));
}

代码示例来源：origin: oracle/helidon

/**
 * Update builder from configuration. See
 * {@link JwtProvider.JwtOutboundTarget#create(Config, TokenHandler)}
 * for configuration options description.
 *
 * @param config to update builder from
 * @return updated builder instance
 */
public Builder config(Config config) {
  config.get("outbound-token")
      .asNode()
      .map(TokenHandler::create)
      .ifPresent(this::tokenHandler);
  config.get("jwt-kid").asString().ifPresent(this::jwtKid);
  config.get("jwk-kid").asString().ifPresent(this::jwkKid);
  config.get("jwt-audience").asString().ifPresent(this::jwtAudience);
  config.get("jwt-not-before-seconds").asInt().ifPresent(this::notBeforeSeconds);
  config.get("jwt-validity-seconds").asLong().ifPresent(this::validitySeconds);
  return this;
}

代码示例来源：origin: oracle/helidon

@Override
public ConfigSource apply(Config config) throws ConfigMappingException, MissingValueException {
  Config properties = config.get(PROPERTIES_KEY) // use properties config node
      .asNode()
      .orElse(Config.empty(config)); // or empty config node
  return OptionalHelper.from(config.get(TYPE_KEY)
                    .asString() // `type` is specified
                    .flatMap(type -> OptionalHelper
                        .from(builtin(type, properties)) // return built-in source
                        .or(() -> providers(type, properties))
                        .asOptional())) // or use sources - custom type to class mapping
      .or(() -> config.get(CLASS_KEY)
          .as(Class.class) // `class` is specified
          .flatMap(clazz -> custom(clazz, properties))) // return custom source
      .asOptional()
      .orElseThrow(() -> new ConfigMappingException(config.key(), "Uncompleted source configuration."));
}

代码示例来源：origin: oracle/helidon

/**
 * Load an instance from configuration.
 * Expected keys:
 * <ul>
 * <li>jwt-kid - the key id to put into JWT</li>
 * <li>jwk-kid - the key id to look for when signing the JWT</li>
 * <li>jwt-audience - the audience of this JWT</li>
 * <li>jwt-not-before-seconds - not before seconds</li>
 * <li>jwt-validity-seconds - validity of JWT</li>
 * </ul>
 *
 * @param config         configuration to load data from
 * @param defaultHandler default outbound token handler
 * @return a new instance configured from config
 * @see #JwtOutboundTarget(TokenHandler, String, String, String, int, long)
 */
public static JwtOutboundTarget fromConfig(Config config, TokenHandler defaultHandler) {
  TokenHandler tokenHandler = config.get("outbound-token")
      .asNode()
      .map(TokenHandler::create)
      .orElse(defaultHandler);
  return new JwtOutboundTarget(
      tokenHandler,
      config.get("jwt-kid").asString().orElse(null),
      config.get("jwk-kid").asString().orElse(null),
      config.get("jwt-audience").asString().orElse(null),
      config.get("jwt-not-before-seconds").asInt().orElse(5),
      config.get("jwt-validity-seconds").asLong().orElse(60L * 60 * 24));
}

代码示例来源：origin: io.helidon.config/helidon-config

/**
 * Performs the given action with the config node if node
 * {@link #exists() exists}, otherwise does nothing.
 *
 * @param action the action to be performed if the node exists
 * @see #exists()
 * @see #type()
 */
default void ifExists(Consumer<Config> action) {
  asNode().ifPresent(action);
}

代码示例来源：origin: io.helidon.config/helidon-config

@Override
public RetryPolicy apply(Config config) throws ConfigMappingException, MissingValueException {
  Config properties = config.get(PROPERTIES_KEY) // use properties config node
      .asNode()
      .orElse(Config.empty(config)); // or empty config node
  return OptionalHelper.from(config.get(TYPE_KEY).asString() // `type` is specified
      .flatMap(type -> this.builtin(type, properties))) // return built-in retry policy
      .or(() -> config.get(CLASS_KEY)
          .as(Class.class) // `class` is specified
          .flatMap(clazz -> custom(clazz, properties))) // return custom retry policy
      .asOptional()
      .orElseThrow(() -> new ConfigMappingException(config.key(), "Uncompleted retry-policy configuration."));
}

代码示例来源：origin: io.helidon.config/helidon-config

public <T> Function<T, Supplier<PollingStrategy>> apply(Config config, Class<T> targetType)
    throws ConfigMappingException, MissingValueException {
  Config properties = config.get(PROPERTIES_KEY) // use properties config node
      .asNode()
      .orElse(Config.empty(config)); // or empty config node
  return OptionalHelper.from(config.get(TYPE_KEY).asString() // `type` is specified
                    .flatMap(type -> this
                        .builtin(type, properties, targetType))) // return built-in polling strategy
      .or(() -> config.get(CLASS_KEY)
          .as(Class.class) // `class` is specified
          .flatMap(clazz -> custom(clazz, properties, targetType))) // return custom polling strategy
      .asOptional()
      .orElseThrow(() -> new ConfigMappingException(config.key(), "Uncompleted polling-strategy configuration."));
}

代码示例来源：origin: io.helidon.security.providers/helidon-security-providers-jwt

/**
 * Update builder from configuration. See
 * {@link JwtProvider.JwtOutboundTarget#create(Config, TokenHandler)}
 * for configuration options description.
 *
 * @param config to update builder from
 * @return updated builder instance
 */
public Builder config(Config config) {
  config.get("outbound-token")
      .asNode()
      .map(TokenHandler::create)
      .ifPresent(this::tokenHandler);
  config.get("jwt-kid").asString().ifPresent(this::jwtKid);
  config.get("jwk-kid").asString().ifPresent(this::jwkKid);
  config.get("jwt-audience").asString().ifPresent(this::jwtAudience);
  config.get("jwt-not-before-seconds").asInt().ifPresent(this::notBeforeSeconds);
  config.get("jwt-validity-seconds").asLong().ifPresent(this::validitySeconds);
  return this;
}

代码示例来源：origin: io.helidon.config/helidon-config

@Override
public ConfigSource apply(Config config) throws ConfigMappingException, MissingValueException {
  Config properties = config.get(PROPERTIES_KEY) // use properties config node
      .asNode()
      .orElse(Config.empty(config)); // or empty config node
  return OptionalHelper.from(config.get(TYPE_KEY)
                    .asString() // `type` is specified
                    .flatMap(type -> OptionalHelper
                        .from(builtin(type, properties)) // return built-in source
                        .or(() -> providers(type, properties))
                        .asOptional())) // or use sources - custom type to class mapping
      .or(() -> config.get(CLASS_KEY)
          .as(Class.class) // `class` is specified
          .flatMap(clazz -> custom(clazz, properties))) // return custom source
      .asOptional()
      .orElseThrow(() -> new ConfigMappingException(config.key(), "Uncompleted source configuration."));
}

代码示例来源：origin: io.helidon.microprofile.jwt/helidon-microprofile-jwt-auth

/**
 * Load an instance from configuration.
 * Expected keys:
 * <ul>
 * <li>jwt-kid - the key id to put into JWT</li>
 * <li>jwk-kid - the key id to look for when signing the JWT</li>
 * <li>jwt-audience - the audience of this JWT</li>
 * <li>jwt-not-before-seconds - not before seconds</li>
 * <li>jwt-validity-seconds - validity of JWT</li>
 * </ul>
 *
 * @param config         configuration to load data from
 * @param defaultHandler default outbound token handler
 * @return a new instance configured from config
 * @see #JwtOutboundTarget(TokenHandler, String, String, String, int, long)
 */
public static JwtOutboundTarget fromConfig(Config config, TokenHandler defaultHandler) {
  TokenHandler tokenHandler = config.get("outbound-token")
      .asNode()
      .map(TokenHandler::create)
      .orElse(defaultHandler);
  return new JwtOutboundTarget(
      tokenHandler,
      config.get("jwt-kid").asString().orElse(null),
      config.get("jwk-kid").asString().orElse(null),
      config.get("jwt-audience").asString().orElse(null),
      config.get("jwt-not-before-seconds").asInt().orElse(5),
      config.get("jwt-validity-seconds").asLong().orElse(60L * 60 * 24));
}

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