com.vaushell.superpipes.nodes.fb.N_FB_Post.java Source code

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Here is the source code for com.vaushell.superpipes.nodes.fb.N_FB_Post.java

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/*
 * Copyright (C) 2013 Fabien Vauchelles (fabien_AT_vauchelles_DOT_com).
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3, 29 June 2007, of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301  USA
 */

package com.vaushell.superpipes.nodes.fb;

import com.vaushell.superpipes.dispatch.Message;
import com.vaushell.superpipes.nodes.A_Node;
import com.vaushell.superpipes.tools.retry.A_Retry;
import com.vaushell.superpipes.tools.scribe.fb.FacebookClient;
import com.vaushell.superpipes.tools.scribe.fb.FacebookException;
import java.io.IOException;
import java.net.URI;
import java.nio.file.Path;
import java.nio.file.Paths;
import org.joda.time.DateTime;
import org.joda.time.Duration;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Post a message to Facebook.
 *
 * @author Fabien Vauchelles (fabien_AT_vauchelles_DOT_com)
 */
public class N_FB_Post extends A_Node {
    // PUBLIC
    public N_FB_Post() {
        super(null, SECURE_ANTIBURST);

        this.client = new FacebookClient();
        this.forcedTarget = null;
    }

    // PROTECTED
    @Override
    protected void prepareImpl() throws Exception {
        final Path tokenPath = getDispatcher().getDatas().resolve(Paths.get(getNodeID(), "token"));

        final String pageName = getProperties().getConfigString("pagename", null);
        if (pageName == null) {
            client.login(getProperties().getConfigString("key"), getProperties().getConfigString("secret"),
                    tokenPath, getDispatcher().getVCodeFactory()
                            .create("[" + getClass().getName() + " / " + getNodeID() + "] "));

            forcedTarget = getProperties().getConfigString("userid", null);
        } else {
            client.loginAsPage(pageName, getProperties().getConfigString("key"),
                    getProperties().getConfigString("secret"), tokenPath, getDispatcher().getVCodeFactory()
                            .create("[" + getClass().getName() + " / " + getNodeID() + "] "));
        }
    }

    @Override
    protected void loop() throws Exception {
        // Receive
        setMessage(getLastMessageOrWait());

        if (LOGGER.isTraceEnabled()) {
            LOGGER.trace("[" + getNodeID() + "] receive message : " + Message.formatSimple(getMessage()));
        }

        if (!getMessage().contains(Message.KeyIndex.URI)) {
            throw new IllegalArgumentException("message doesn't have an uri");
        }

        // Send to FB
        final URI uri = (URI) getMessage().getProperty(Message.KeyIndex.URI);
        final String uriStr;
        if (uri == null) {
            uriStr = null;
        } else {
            uriStr = uri.toString();
        }

        final String caption;
        if (getMessage().contains(Message.KeyIndex.URI_SOURCE)) {
            caption = ((URI) getMessage().getProperty(Message.KeyIndex.URI_SOURCE)).getHost();
        } else {
            caption = null;
        }

        final DateTime date;
        if (getProperties().getConfigBoolean("backdating", Boolean.FALSE)) {
            date = (DateTime) getMessage().getProperty(Message.KeyIndex.PUBLISHED_DATE);
        } else {
            date = null;
        }

        final String ID = new A_Retry<String>() {
            @Override
            protected String executeContent() throws FacebookException, IOException {
                final String title = (String) getMessage().getProperty(Message.KeyIndex.TITLE);

                final String ID = client.postLink(forcedTarget,
                        (String) getMessage().getProperty(Message.KeyIndex.CONTENT), uriStr, title, caption,
                        (String) getMessage().getProperty(Message.KeyIndex.DESCRIPTION), date);

                if (ID == null || ID.isEmpty()) {
                    throw new IOException("Cannot post link with title=" + title);
                } else {
                    return ID;
                }
            }
        }.setRetry(getProperties().getConfigInteger("retry", 10))
                .setWaitTime(getProperties().getConfigDuration("wait-time", new Duration(5000L)))
                .setWaitTimeMultiplier(getProperties().getConfigDouble("wait-time-multiplier", 2.0))
                .setJitterRange(getProperties().getConfigInteger("jitter-range", 500))
                .setMaxDuration(getProperties().getConfigDuration("max-duration", new Duration(0L))).execute();

        if (LOGGER.isTraceEnabled()) {
            LOGGER.trace("[" + getNodeID() + "] receive ID : " + ID);
        }

        getMessage().setProperty("id-facebook", ID);

        sendMessage();
    }

    @Override
    protected void terminateImpl() throws Exception {
        // Nothing
    }

    // PRIVATE
    private static final Logger LOGGER = LoggerFactory.getLogger(N_FB_Post.class);
    private final FacebookClient client;
    private String forcedTarget;
}