components/camel-google-drive/src/main/java/org/apache/camel/component/google/drive/GoogleDriveComponent.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.camel.component.google.drive;

import com.google.api.services.drive.Drive;
import org.apache.camel.CamelContext;
import org.apache.camel.Endpoint;
import org.apache.camel.component.google.drive.internal.GoogleDriveApiCollection;
import org.apache.camel.component.google.drive.internal.GoogleDriveApiName;
import org.apache.camel.spi.Metadata;
import org.apache.camel.spi.annotations.Component;
import org.apache.camel.support.component.AbstractApiComponent;
import org.apache.camel.util.ObjectHelper;

/**
 * Represents the component that manages {@link GoogleDriveEndpoint}.
 */
@Component("google-drive")
public class GoogleDriveComponent extends AbstractApiComponent<GoogleDriveApiName, GoogleDriveConfiguration, GoogleDriveApiCollection> {

    @Metadata(label = "advanced")
    private Drive client;
    @Metadata(label = "advanced")
    private GoogleDriveClientFactory clientFactory;
    
    public GoogleDriveComponent() {
        super(GoogleDriveEndpoint.class, GoogleDriveApiName.class, GoogleDriveApiCollection.getCollection());
    }

    public GoogleDriveComponent(CamelContext context) {
        super(context, GoogleDriveEndpoint.class, GoogleDriveApiName.class, GoogleDriveApiCollection.getCollection());
    }

    @Override
    protected GoogleDriveApiName getApiName(String apiNameStr) throws IllegalArgumentException {
        return GoogleDriveApiName.fromValue(apiNameStr);
    }

    public Drive getClient(GoogleDriveConfiguration googleDriveConfiguration) {
        if (client == null) {
            client = getClientFactory().makeClient(googleDriveConfiguration.getClientId(), googleDriveConfiguration.getClientSecret(), 
                    googleDriveConfiguration.getScopes(), googleDriveConfiguration.getApplicationName(), 
                    googleDriveConfiguration.getRefreshToken(), googleDriveConfiguration.getAccessToken());
        }
        return client;
    }
    
    public GoogleDriveClientFactory getClientFactory() {
        if (clientFactory == null) {
            // configure https proxy from camelContext
            if (ObjectHelper.isNotEmpty(getCamelContext().getGlobalOption("http.proxyHost")) 
                    && ObjectHelper.isNotEmpty(getCamelContext().getGlobalOption("http.proxyPort"))) {
                String host = getCamelContext().getGlobalOption("http.proxyHost");
                int port = Integer.parseInt(getCamelContext().getGlobalOption("http.proxyPort"));
                clientFactory = new BatchGoogleDriveClientFactory(host, port);
            } else {
                clientFactory = new BatchGoogleDriveClientFactory();
            }
        }
        return clientFactory;
    }

    /**
     * To use the shared configuration
     */
    @Override
    public void setConfiguration(GoogleDriveConfiguration configuration) {
        super.setConfiguration(configuration);
    }

    @Override
    public GoogleDriveConfiguration getConfiguration() {
        if (configuration == null) {
            configuration = new GoogleDriveConfiguration();
        }
        return super.getConfiguration();
    }

    /**
     * To use the GoogleCalendarClientFactory as factory for creating the client.
     * Will by default use {@link BatchGoogleDriveClientFactory}
     */
    public void setClientFactory(GoogleDriveClientFactory clientFactory) {
        this.clientFactory = clientFactory;
    }
    
    @Override
    protected Endpoint createEndpoint(String uri, String methodName, GoogleDriveApiName apiName,
                                      GoogleDriveConfiguration endpointConfiguration) {
        endpointConfiguration.setApiName(apiName);
        endpointConfiguration.setMethodName(methodName);
        GoogleDriveEndpoint endpoint = new GoogleDriveEndpoint(uri, this, apiName, methodName, endpointConfiguration);
        endpoint.setClientFactory(clientFactory);
        return endpoint;
    }
}