io.syndesis.credential.CredentialProviderRegistry.java Source code

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Here is the source code for io.syndesis.credential.CredentialProviderRegistry.java

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/**
 * Copyright (C) 2016 Red Hat, Inc.
 *
 * 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 io.syndesis.credential;

import java.util.Map;
import java.util.function.Function;
import java.util.stream.Collectors;

import io.syndesis.dao.manager.DataManager;
import io.syndesis.model.connection.Connector;

import org.springframework.boot.autoconfigure.social.SocialProperties;
import org.springframework.core.io.support.SpringFactoriesLoader;
import org.springframework.util.ClassUtils;

final class CredentialProviderRegistry implements CredentialProviderLocator {

    private final Map<String, CredentialProviderFactory> credentialProviderFactories;

    private final DataManager dataManager;

    /* default */ static class ConnectorSettings extends SocialProperties {

        ConnectorSettings(final Connector connector) {
            setAppId(requiredProperty(connector, Credentials.CLIENT_ID_TAG));
            setAppSecret(requiredProperty(connector, Credentials.CLIENT_SECRET_TAG));
        }

        private static String requiredProperty(final Connector connector, final String tag) {
            return connector.propertyTaggedWith(tag).orElseThrow(() -> new IllegalArgumentException(
                    "No property tagged with `" + tag + "` on connector: " + connector));
        }
    }

    CredentialProviderRegistry(final DataManager dataManager) {
        this.dataManager = dataManager;

        credentialProviderFactories = SpringFactoriesLoader
                .loadFactories(CredentialProviderFactory.class, ClassUtils.getDefaultClassLoader()).stream()
                .collect(Collectors.toMap(CredentialProviderFactory::id, Function.identity()));
    }

    @Override
    public CredentialProvider providerWithId(final String providerId) {
        final Connector connector = dataManager.fetch(Connector.class, providerId);

        if (connector == null) {
            throw new IllegalArgumentException("Unable to find connector with id: " + providerId);
        }

        final SocialProperties socialProperties = new ConnectorSettings(connector);

        final CredentialProvider providerWithId = credentialProviderFactories.get(providerId)
                .create(socialProperties);

        if (providerWithId == null) {
            throw new IllegalArgumentException("Unable to locate credential provider with id: " + providerId);
        }

        return providerWithId;
    }

}