reger
11 years ago
commit
5c4a3d1c01
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#[encoded]#
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// seedlist.java
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// -----------------------
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// part of YaCy
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// (C) by Michael Peter Christen; mc@yacy.net
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// first published on http://yacy.net
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// Frankfurt, Germany, 2013
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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import java.util.ArrayList;
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import java.util.Map;
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import net.yacy.cora.protocol.RequestHeader;
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import net.yacy.peers.Seed;
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import net.yacy.search.Switchboard;
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import net.yacy.server.serverCore;
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import net.yacy.server.serverObjects;
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import net.yacy.server.serverSwitch;
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/**
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* this servlet generates the same file as the principal peers upload to a bootstrap position
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* you can call it either with
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* http://localhost:8090/yacy/seedlist.html
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* or to generate json (or jsonp) with
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* http://localhost:8090/yacy/seedlist.json
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* http://localhost:8090/yacy/seedlist.json?callback=seedlist
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*/
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public final class seedlist {
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private static final int LISTMAX = 1000;
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public static serverObjects respond(final RequestHeader header, final serverObjects post, final serverSwitch env) {
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// return variable that accumulates replacements
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final Switchboard sb = (Switchboard) env;
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int maxcount = Math.min(LISTMAX, post == null ? Integer.MAX_VALUE : post.getInt("maxcount", Integer.MAX_VALUE));
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final ArrayList<Seed> v = sb.peers.getSeedlist(maxcount, true);
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final serverObjects prop = new serverObjects();
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// write simple-encoded seed lines or json
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String EXT = header.get("EXT");
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boolean json = EXT != null && EXT.equals("json");
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if (json) {
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// check for JSONP
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if ( post != null && post.containsKey("callback") ) {
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prop.put("jsonp-start", post.get("callback") + "([");
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prop.put("jsonp-end", "]);");
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} else {
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prop.put("jsonp-start", "");
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prop.put("jsonp-end", "");
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}
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// construct json property lists
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for (int i = 0; i < v.size(); i++) {
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prop.putJSON("peers_" + i + "_map_0_k", Seed.HASH);
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prop.putJSON("peers_" + i + "_map_0_v", v.get(i).hash);
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prop.put("peers_" + i + "_map_0_c", 1);
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Map<String, String> map = v.get(i).getMap();
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int c = 1;
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for (Map.Entry<String, String> m: map.entrySet()) {
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prop.putJSON("peers_" + i + "_map_" + c + "_k", m.getKey());
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prop.putJSON("peers_" + i + "_map_" + c + "_v", m.getValue());
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prop.put("peers_" + i + "_map_" + c + "_c", 1);
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c++;
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}
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prop.put("peers_" + i + "_map_" + (c - 1) + "_c", 0);
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prop.put("peers_" + i + "_map", c);
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prop.put("peers_" + i + "_c", i < v.size() - 1 ? 1 : 0);
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}
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prop.put("peers", v.size());
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} else {
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final StringBuilder encoded = new StringBuilder(1024);
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for (Seed seed: v) {
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encoded.append(seed.genSeedStr(null)).append(serverCore.CRLF_STRING);
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}
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prop.put("encoded", encoded.toString());
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}
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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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@ -0,0 +1,6 @@
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#[jsonp-start]#{
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"peers":[#{peers}#{
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#{map}#"#[k]#":"#[v]#"#(c)#::,#(/c)#
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#{/map}#}#(c)#::,#(/c)##{/peers}#
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]
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}#[jsonp-end]#
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