import java.util.Date;
import net.yacy.cora.document.RSSFeed;
import net.yacy.cora.document.RSSMessage;
import net.yacy.cora.protocol.RequestHeader;
import de.anomic.search.Switchboard;
import de.anomic.server.serverObjects;
import de.anomic.server.serverSwitch;
import de.anomic.yacy.yacyChannel;
public class feed {
public static serverObjects respond(final RequestHeader header, final serverObjects post, final serverSwitch env) {
final Switchboard sb = (Switchboard) env;
// insert default values
final serverObjects prop = new serverObjects();
prop.put("channel_title", "");
prop.put("channel_description", "");
prop.put("channel_pubDate", "");
prop.put("item", "0");
if ((post == null) || (env == null)) return prop;
final boolean authorized = sb.verifyAuthentication(header, false);
final String channelNames = post.get("set");
if (channelNames == null) return prop;
final String[] channels = channelNames.split(","); // several channel names can be given and separated by comma
int messageCount = 0;
int messageMaxCount = Math.min(post.getInt("count", 100), 1000);
channelIteration: for (final String channelName: channels) {
// prevent that unauthorized access to this servlet get results from private data
final yacyChannel channel = yacyChannel.valueOf(channelName);
if (channel == null) continue channelIteration;
if (!authorized && yacyChannel.privateChannels.contains(channel)) continue channelIteration; // allow only public channels if not authorized
if ("TEST".equals(channelName)) {
// for interface testing return at least one single result
prop.putXML("channel_title", "YaCy News Testchannel");
prop.putXML("channel_description", "");
prop.put("channel_pubDate", (new Date()).toString());
prop.putXML("item_" + messageCount + "_title", channelName + ": " + "YaCy Test Entry " + (new Date()).toString());
prop.putXML("item_" + messageCount + "_description", "abcdefg");
prop.putXML("item_" + messageCount + "_link", "http://yacy.net");
prop.put("item_" + messageCount + "_pubDate", (new Date()).toString());
prop.put("item_" + messageCount + "_guid", System.currentTimeMillis());
messageCount++;
messageMaxCount--;
continue channelIteration;
}
// read the channel
final RSSFeed feed = yacyChannel.channels(channel);
if (feed == null || feed.isEmpty()) continue channelIteration;
RSSMessage message = feed.getChannel();
if (message != null) {
prop.putXML("channel_title", message.getTitle());
prop.putXML("channel_description", message.getDescription());
prop.put("channel_pubDate", message.getPubDate());
}
while (messageMaxCount > 0 && !feed.isEmpty()) {
message = feed.pollMessage();
if (message == null) continue;
// create RSS entry
prop.putXML("item_" + messageCount + "_title", channelName + ": " + message.getTitle());
prop.putXML("item_" + messageCount + "_description", message.getDescription());
prop.putXML("item_" + messageCount + "_link", message.getLink());
prop.put("item_" + messageCount + "_pubDate", message.getPubDate());
prop.put("item_" + messageCount + "_guid", message.getGuid());
messageCount++;
messageMaxCount--;
}
if (messageMaxCount == 0) break channelIteration;
}
prop.put("item", messageCount);
// return rewrite properties
return prop;
}
}