hack to generate a unique message-id for messages created in the same second

by optionally add a 1 second offset counter to the current time (which is
used as the unique id part)

htroot/TransNews_p.java

@@ -74,6 +74,7 @@ public class TransNews_p {
         // read voting
         if ((post != null) && post.containsKey("publishtranslation")) {
             Iterator<String> filenameit = localTrans.keySet().iterator();
+            int msgcounter = 0;
             while (filenameit.hasNext()) {
                 String file = filenameit.next();
                 Map<String, String> tmptrans = localTrans.get(file);
@@ -109,6 +110,7 @@ public class TransNews_p {
                             map.put("file", file);
                             map.put("source", sourcetxt);
                             map.put("target", targettxt);
+                            map.put("#", Integer.toString(msgcounter++));
                             sb.peers.newsPool.publishMyNews(sb.peers.mySeed(), NewsPool.CATEGORY_TRANSLATION_ADD, map);
                         }
                     }

source/net/yacy/peers/NewsDB.java

@@ -261,12 +261,33 @@ public class NewsDB {
             removeStandards();
         }
 
+        /**
+         * Create a new news record and assign data for the unique message id.
+         * This is composed of Date-String + PeerHash. Date string is with precision
+         * seconds.
+         *
+         * To allow programatically to create more than one message per second
+         * a counter which is added to the date part can be given as attritues
+         * with key "#"
+         * @param mySeed
+         * @param category
+         * @param attributes
+         */
         private Record(final Seed mySeed, final String category, final Map<String, String> attributes) {
             if (category.length() > NewsDB.categoryStringLength) throw new IllegalArgumentException("category length (" + category.length() + ") exceeds maximum (" + NewsDB.categoryStringLength + ")");
             if (attributes.toString().length() > NewsDB.this.attributesMaxLength) throw new IllegalArgumentException("attributes length (" + attributes.toString().length() + ") exceeds maximum (" + NewsDB.this.attributesMaxLength + ")");
             this.attributes = attributes;
             this.received = null;
-            this.created = new Date();
+            // workaround for publishing multiple messages. Message id must be unique and is generated date-sting(yyyyMMddhhmmss)+peerhash
+            // publishing programatically 2 messages creates same id (because created in the same second). To work around this, if map contains
+            // key="#" use value as message counter and put this conter as offset in seconds to the id time part  20161231123001 .. 20161231123002 ..
+            if (attributes.containsKey("#")) {
+                int cnt = Integer.parseInt(attributes.get("#")); // get number used as counter/offset added as second
+                // add (counter * millisecond)
+                this.created = new Date(System.currentTimeMillis() + (cnt * 1000));
+            } else {
+                this.created = new Date();
+            }
             this.category = category;
             this.distributed = 0;
             this.originator = mySeed.hash;
@@ -295,6 +316,7 @@ public class NewsDB {
             this.attributes.remove("cre");
             this.attributes.remove("rec");
             this.attributes.remove("dis");
+            this.attributes.remove("#"); // special attribute for id offset (see Record(mySeed... )
         }
 
         @Override
@@ -350,4 +372,4 @@ public class NewsDB {
         }
     }
 
-}
+}