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