// ------------------------------------------------------
// for "AttrRqst"
// Return: attrbute list for the URL/"service type"
// format: (attr1=value1),(attr2=value2)
// if tag != "", return ONLY those attributes in tag
// ------------------------------------------------------
public synchronized String getAttrList(String url, String scope, String tag, String ltag) {
if (table.containsKey(ltag + url)) {
Entry e = (Entry) table.get(ltag + url);
if (!e.getDeleted() && scope.equalsIgnoreCase(e.getScope())) {
return e.getAttr(tag);
} else {
return "";
}
} else { // Not URL, try servive type
return typeAttrList(url, scope, tag, ltag);
}
}
private synchronized String typeAttrList(String type, String scope, String tag, String ltag) {
StringBuffer attrList = new StringBuffer();
Iterator values = table.values().iterator();
while (values.hasNext()) {
Entry e = (Entry) values.next();
if (!e.getDeleted()
&& type.equalsIgnoreCase(e.getType())
&& scope.equalsIgnoreCase(e.getScope())
&& ltag.equalsIgnoreCase(e.getLtag())) {
String s = e.getAttr(tag);
if (attrList.length() > 0) attrList.append(",");
attrList.append(s);
}
}
return attrList.toString();
}
// ------------------------------------------------------------------
// send newer updates to the peer through "tcp" peering connection
// compare each entry's updating ID with IDs in (adalist, atslist)
// ------------------------------------------------------------------
public synchronized void antiEntropy(slpTcpHandler tcp, String scope, String rda, long rts) {
TreeMap tmp = new TreeMap();
Iterator values = table.values().iterator();
while (values.hasNext()) {
Entry e = (Entry) values.next();
String ada = e.getAcceptDA();
long ats = e.getAcceptTS();
if (ada.equalsIgnoreCase(rda)
&& ats > rts
&& // for newer updates
Util.shareString(scope, e.getScope(), ",")) {
tmp.put(new Long(ats), e.getLtag().concat(e.getURL()));
}
}
long ctime = System.currentTimeMillis() / 1000;
values = tmp.values().iterator();
while (values.hasNext()) {
String k = (String) values.next();
Entry e = (Entry) table.get(k);
int ltime = (int) (e.getArrivalTS() / 1000 + e.getLifetime() - ctime);
byte[] buf =
composer.SrvReg(
0,
Const.fresh_flag,
e.getLtag(),
e.getURL(),
ltime,
e.getType(),
e.getScope(),
e.getAttr(""));
buf =
composer.MeshFwdExt(buf, Const.Fwded, e.getVersionTS(), e.getAcceptDA(), e.getAcceptTS());
tcp.send(buf, buf.length);
if (e.getDeleted()) {
buf = composer.SrvDeReg(0, e.getLtag(), e.getScope(), e.getURL(), ltime, "");
buf =
composer.MeshFwdExt(
buf, Const.Fwded, e.getVersionTS(), e.getAcceptDA(), e.getAcceptTS());
tcp.send(buf, buf.length);
}
}
}
