com.github.triceo.robozonky.app.configuration.ConfirmationProviderLoader Maven / Gradle / Ivy
/*
* Copyright 2017 Lukáš Petrovický
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.github.triceo.robozonky.app.configuration;
import java.util.Optional;
import java.util.ServiceLoader;
import java.util.stream.Stream;
import java.util.stream.StreamSupport;
import com.github.triceo.robozonky.api.confirmations.ConfirmationProvider;
import com.github.triceo.robozonky.api.confirmations.ConfirmationProviderService;
import com.github.triceo.robozonky.app.util.ExtensionsManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
final class ConfirmationProviderLoader {
private static final Logger LOGGER = LoggerFactory.getLogger(ConfirmationProviderLoader.class);
private static final ServiceLoader LOADER =
ExtensionsManager.INSTANCE.getServiceLoader(ConfirmationProviderService.class);
static Optional load(final String providerId) {
ConfirmationProviderLoader.LOGGER.trace("Looking up confirmation provider '{}'.", providerId);
return StreamSupport.stream(ConfirmationProviderLoader.LOADER.spliterator(), false)
.peek(cp ->
ConfirmationProviderLoader.LOGGER.debug("Evaluating confirmation provider '{}' with '{}'.",
providerId, cp.getClass()))
.map(cp -> cp.find(providerId))
.flatMap(o -> o.isPresent() ? Stream.of(o.get()) : Stream.empty())
.findFirst();
}
}