public ReqContext(BeagleWebService wsp, IQueryResult result, IQueryable iq)
{
this.wsp = wsp;
this.result = result;
this.iq = iq;
this.reqProcessed = false;
}
public NetBeagleHandler(string hostname, string port, IQueryable iq)
{
this.Hostname = hostname;
this.Port = port;
netBeagleQueryable = iq;
log.Info("Instantiating NetBeagleHandler for " + Hostname + ":" + Port);
wsp = new BeagleWebService(Hostname, Port);
wsp.Timeout = 40000; //40 sec time limit per request
}
public NetBeagleHandler (string hostname, string port, IQueryable iq)
{
this.Hostname = hostname;
this.Port = port;
netBeagleQueryable = iq;
log.Info ("Instantiating NetBeagleHandler for " + Hostname + ":" + Port);
wsp = new BeagleWebService (Hostname, Port);
wsp.Timeout = 40000; //40 sec time limit per request
}
public static void DoQueryResponseHandler(IAsyncResult ar)
{
ReqContext rc = (ReqContext)ar.AsyncState;
IQueryable iq = rc.GetQueryable;
BeagleWebService wsp = rc.GetProxy;
IQueryResult result = rc.GetResult;
int count = 0;
//bool hitRejectsLogged = false;
try
{
SearchResult resp = wsp.EndBeagleQuery(ar);
if ((resp != null) && (resp.numResults > 0))
{
if (rc.SearchToken == null)
{
rc.SearchToken = resp.searchToken;
}
//NetContext nc = new NetContext(wsp, resp.searchToken);
HitResult[] hres = resp.hitResults;
ArrayList nwhits = new ArrayList();
for (int i = 0; i < hres.Length; i++)
{
try {
HitResult hr = hres[i];
Hit hit = new NetworkHit();
//[Uri Format] netbeagle://164.99.153.134:8888/searchToken?http:///....
if (hr.uri.StartsWith(NetworkedBeagle.BeagleNetPrefix))
{
hit.UriAsString = hr.uri;
}
else
{
string[] fragments = hr.uri.Split('/');
string hostNamePort = fragments[2];
hit.UriAsString = NetworkedBeagle.BeagleNetPrefix + hostNamePort + "/" + resp.searchToken + "?" + hr.uri;
}
hit.Type = hr.resourceType;
hit.MimeType = hr.mimeType;
hit.Source = "Network"; //hit.Source = hr.source;
hit.Score = hr.score;
if (hr.properties.Length > 0)
{
foreach (HitProperty hp in hr.properties)
{
Property p = Property.New(hp.PKey, hp.PVal);
p.IsMutable = hp.IsMutable;
p.IsSearched = hp.IsSearched;
hit.AddProperty(p);
}
}
//Add Snippet
((NetworkHit)hit).snippet = hr.snippet;
//if (hr.snippet != null)
//log.Debug("\nNBH: URI" + i + "=" + hr.uri + "\n Snippet=" + hr.snippet);
((NetworkHit)hit).context = new NetContext(hr.hashCode);
//Add NetBeagleQueryable instance
hit.SourceObject = iq;
hit.SourceObjectName = ((NetworkedBeagle)iq).Name;
nwhits.Add(hit);
count++;
}
catch (Exception ex2) {
log.Warn("Exception in NetBeagleHandler: DoQueryResponseHandler() while processing NetworkHit: {0} from {1}\n Reason: {2} ", hres[i].uri, wsp.Hostname + ":" + wsp.Port, ex2.Message);
//log.Error ("Exception StackTrace: " + ex.StackTrace);
}
} //end for
if (nwhits.Count > 0)
{
result.Add(nwhits);
}
/*
* if ((! result.Add (nwhits)) && (! hitRejectsLogged))
* {
* hitRejectsLogged = true;
* log.Info("NetBeagleHandler: Network Hits rejected by HitRegulator. Too many Hits!");
* }
*/
log.Info("NetBeagleHandler: DoQueryResponseHandler() Got {0} result(s) from Index {1} from Networked Beagle at {2}", count, resp.firstResultIndex, wsp.Hostname + ":" + wsp.Port);
int index = resp.firstResultIndex + resp.numResults;
if (index < resp.totalResults)
{
log.Debug("NetBeagleHandler: DoQueryResponseHandler() invoking GetResults with index: " + index);
string searchToken = resp.searchToken;
GetResultsRequest req = new GetResultsRequest();
req.startIndex = index;
req.searchToken = searchToken;
IAsyncResult ar2;
ar2 = wsp.BeginGetResults(req, NetBeagleHandler.DoQueryResponseHandler, rc);
return;
}
} //end if
else
{
if (resp == null)
{
log.Warn("NetBeagleHandler: DoQueryResponseHandler() got Null response from EndBeagleQuery() !");
}
}
}
catch (Exception ex) {
log.Error("Exception in NetBeagleHandler: DoQueryResponseHandler() - {0} - for {1} ", ex.Message, wsp.Hostname + ":" + wsp.Port);
}
//Signal completion of request handling
rc.RequestProcessed = true;
}
public ReqContext2(BeagleWebService wsp, ArrayList nwHits, BT.TileHitCollection thc)
{
this._thc = thc;
this._wsp = wsp;
this._nwHits = nwHits;
}
private bool tenHits = false; //Flag to do Prefetch check only every 10 hits
private void PrefetchSnippetsForNetworkHits(BT.TileHitCollection thc)
{
int lastDisplayed = 0;
if (maxDisplayed != 0)
lastDisplayed = thc.LastDisplayed + 1;
//We have cached snippets for network hits upto maxDisplayed
if (lastDisplayed < maxDisplayed)
return;
maxDisplayed = thc.LastDisplayed + 1;
//Do Prefetch check once every ten hits
tenHits = !tenHits;
if (!tenHits)
return;
if (lastDisplayed < thc.NumResults) {
int limit = 0;
ArrayList networkHits = new ArrayList();
if ((thc.NumResults - lastDisplayed) > MAX_HITS_AHEAD)
limit = lastDisplayed + MAX_HITS_AHEAD;
else
limit = thc.NumResults;
ArrayList hits = _rp.hitsCopy;
lock (hits.SyncRoot) {
if (limit > hits.Count)
limit = hits.Count;
log.Debug("PrefetchSnippets: Scanning result set for Network Hits from {0} to {1}", lastDisplayed, limit);
//Get all NetworkHits with snippets field not initialized:
for (int si = lastDisplayed; si < limit ; si++)
{
if ((hits[si] is NetworkHit) && (((NetworkHit)hits[si]).snippet == null))
networkHits.Add((NetworkHit)hits[si]);
}
}
log.Debug("PrefetchSnippets: Found {0} NetworkHits without snippets", networkHits.Count);
while (networkHits.Count > 0) {
ArrayList nwHitsPerNode = new ArrayList();
string hostnamePort = GetHostnamePort((NetworkHit)networkHits[0]);
//Gather NetworkHits from a specific target Networked Beagle
foreach (NetworkHit nh in networkHits)
{
string hnp = GetHostnamePort(nh);
if (hnp == null)
continue;
if (hnp.Equals(hostnamePort)) {
if (nwHitsPerNode.Count < MAX_HIT_IDS_PER_REQ)
nwHitsPerNode.Add(nh);
else
break;
}
}
//Remove NetworkHits for this Networked Beagle
int i = networkHits.Count;
while (--i >= 0) {
string hnp = GetHostnamePort((NetworkHit)networkHits[i]);
if ((hnp == null) || hnp.Equals(hostnamePort))
networkHits.RemoveAt(i);
}
if (nwHitsPerNode.Count > 0)
{
string[] f3 = hostnamePort.Split(':');
if (f3.Length < 2)
{
log.Warn("PrefetchSnippets: Invalid format netBeagle URI in NetworkHit");
continue;
}
BeagleWebService wsp = new BeagleWebService(f3[0], f3[1]);
string searchToken = GetSearchToken((NetworkHit)nwHitsPerNode[0]);
if (searchToken.Equals("beagle")) //Check if it is Older version of Beagle networking
searchToken = null;
if (searchToken != null) {
int[] hitHashCodes = new int [nwHitsPerNode.Count];
for (int j = 0; j < hitHashCodes.Length; j++)
hitHashCodes[j] = ((NetContext) ((NetworkHit)nwHitsPerNode[j]).context).hashCode;
log.Debug("PrefetchSnippets: Invoking GetSnippets on {0} for {1} hits", wsp.Hostname, nwHitsPerNode.Count);
GetSnippetsRequest sreq = new GetSnippetsRequest();
sreq.searchToken = searchToken;
sreq.hitHashCodes = hitHashCodes;
ReqContext2 rc = new ReqContext2(wsp, nwHitsPerNode, thc);
wsp.BeginGetSnippets(sreq, PrefetchSnippetsResponseHandler, rc);
}
//Signal change in TileHitCollection due to addition of snippets:
//_rp.rootTile.HitCollection.ClearSources(null);
}
} //end while
} //end if
}
public ReqContext(BeagleWebService wsp, IQueryResult result, IQueryable iq)
{
this.wsp = wsp;
this.result = result;
this.iq = iq;
this.reqProcessed = false;
}
