io.avaje.validation.http.HttpValidatorProvider Maven / Gradle / Ivy

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plugin to provide validation to request payloads for avaje-http

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package io.avaje.validation.http;

import io.avaje.inject.BeanScopeBuilder;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Locale;

/**
 * Plugin for avaje inject that provides a default Http Validator instance.
 */
public final class HttpValidatorProvider implements io.avaje.inject.spi.InjectPlugin {

  private static final Class VALIDATOR_HTTP_CLASS = avajeHttpOnClasspath();

  private static Class avajeHttpOnClasspath() {
    try {
      return Class.forName("io.avaje.http.api.Validator");
    } catch (ClassNotFoundException e) {
      return null;
    }
  }

  @Override
  public Class[] provides() {
    return VALIDATOR_HTTP_CLASS == null ? new Class[]{} : new Class[]{VALIDATOR_HTTP_CLASS};
  }

  @Override
  public void apply(BeanScopeBuilder builder) {
    if (VALIDATOR_HTTP_CLASS == null) {
      return;
    }

    builder.provideDefault(null, VALIDATOR_HTTP_CLASS, () -> {
      final var props = builder.configPlugin();
      final var locales = new ArrayList();

      props.get("validation.locale.default")
        .map(Locale::forLanguageTag)
        .ifPresent(locales::add);

      props.get("validation.locale.addedLocales").stream()
        .flatMap(s -> Arrays.stream(s.split(",")))
        .map(Locale::forLanguageTag)
        .forEach(locales::add);

      final var beanValidator = new BeanValidator(locales);
      builder.addPostConstruct(beanValidator::setValidator);
      return beanValidator;
    });
  }
}