std::vector<double> beatTrack(const AgentParameters ¶ms,
const EventList &events,
const EventList &beats)
{
AgentList agents;
int count = 0;
double beatTime = -1;
if (!beats.empty()) {
count = beats.size() - 1;
EventList::const_iterator itr = beats.end();
--itr;
beatTime = itr->time;
}
if (count > 0) { // tempo given by mean of initial beats
double ioi = (beatTime - beats.begin()->time) / count;
agents.push_back(new Agent(params, ioi));
}
else // tempo not given; use tempo induction
agents = Induction::beatInduction(params, events);
if (!beats.empty()) {
for (AgentList::iterator itr = agents.begin(); itr != agents.end(); ++itr) {
(*itr)->beatTime = beatTime;
(*itr)->beatCount = count;
(*itr)->events = beats;
}
}
agents.beatTrack(events, params, -1);
Agent *best = agents.bestAgent();
std::vector<double> resultBeatTimes;
if (best) {
best->fillBeats(beatTime);
for (EventList::const_iterator itr = best->events.begin();
itr != best->events.end(); ++itr) {
resultBeatTimes.push_back(itr->time);
}
}
for (AgentList::iterator ai = agents.begin(); ai != agents.end(); ++ai) {
delete *ai;
}
return resultBeatTimes;
}
AgentList Induction::beatInduction(const AgentParameters ¶ms,
const EventList &events)
{
int i, j, b, bestCount;
bool submult;
int intervals = 0; // number of interval clusters
std::vector<int> bestn; // count of high-scoring clusters
bestn.resize(topN);
double ratio, err;
int degree;
int maxClusterCount = (int) ceil((maxIOI - minIOI) / clusterWidth);
std::vector<double> clusterMean;
clusterMean.resize(maxClusterCount);
std::vector<int> clusterSize;
clusterSize.resize(maxClusterCount);
std::vector<int> clusterScore;
clusterScore.resize(maxClusterCount);
EventList::const_iterator ptr1, ptr2;
Event e1, e2;
ptr1 = events.begin();
while (ptr1 != events.end()) {
e1 = *ptr1;
++ptr1;
ptr2 = events.begin();
e2 = *ptr2;
++ptr2;
while (e2 != e1 && ptr2 != events.end()) {
e2 = *ptr2;
++ptr2;
}
while (ptr2 != events.end()) {
e2 = *ptr2;
++ptr2;
double ioi = e2.time - e1.time;
if (ioi < minIOI) // skip short intervals
continue;
if (ioi > maxIOI) // ioi too long
break;
for (b = 0; b < intervals; b++) // assign to nearest cluster
if (std::fabs(clusterMean[b] - ioi) < clusterWidth) {
if ((b < intervals - 1) && (std::fabs(clusterMean[b + 1] - ioi)
< std::fabs(clusterMean[b] - ioi))) {
b++; // next cluster is closer
}
clusterMean[b] = (clusterMean[b] * clusterSize[b] + ioi)
/ (clusterSize[b] + 1);
clusterSize[b]++;
break;
}
if (b == intervals) { // no suitable cluster; create new one
if (intervals == maxClusterCount) {
// System.err.println("Warning: Too many clusters");
continue; // ignore this IOI
}
intervals++;
for ( ; (b > 0) && (clusterMean[b - 1] > ioi); b--) {
clusterMean[b] = clusterMean[b - 1];
clusterSize[b] = clusterSize[b - 1];
}
clusterMean[b] = ioi;
clusterSize[b] = 1;
}
}
}
for (b = 0; b < intervals; b++) // merge similar intervals
// TODO: they are now in order, so don't need the 2nd loop
// TODO: check BOTH sides before averaging or upper gps don't work
for (i = b + 1; i < intervals; i++)
if (std::fabs(clusterMean[b] - clusterMean[i]) < clusterWidth) {
clusterMean[b] = (clusterMean[b] * clusterSize[b] +
clusterMean[i] * clusterSize[i]) /
(clusterSize[b] + clusterSize[i]);
clusterSize[b] = clusterSize[b] + clusterSize[i];
--intervals;
for (j = i + 1; j <= intervals; j++) {
clusterMean[j - 1] = clusterMean[j];
clusterSize[j - 1] = clusterSize[j];
}
}
if (intervals == 0)
return AgentList();
for (b = 0; b < intervals; b++)
clusterScore[b] = 10 * clusterSize[b];
bestn[0] = 0;
bestCount = 1;
for (b = 0; b < intervals; b++) {
for (i = 0; i <= bestCount; i++) {
if (i < topN && (i == bestCount || clusterScore[b] > clusterScore[bestn[i]])) {
if (bestCount < topN)
bestCount++;
for (j = bestCount - 1; j > i; j--)
bestn[j] = bestn[j - 1];
bestn[i] = b;
break;
}
}
}
for (b = 0; b < intervals; b++) { // score intervals
for (i = b + 1; i < intervals; i++) {
ratio = clusterMean[b] / clusterMean[i];
submult = ratio < 1;
if (submult)
degree = (int) nearbyint(1 / ratio);
else
degree = (int) nearbyint(ratio);
if ((degree >= 2) && (degree <= 8)) {
if (submult)
err = std::fabs(clusterMean[b] * degree - clusterMean[i]);
else
err = std::fabs(clusterMean[b] - clusterMean[i] * degree);
if (err < (submult ? clusterWidth : clusterWidth * degree)) {
if (degree >= 5)
degree = 1;
else
degree = 6 - degree;
clusterScore[b] += degree * clusterSize[i];
clusterScore[i] += degree * clusterSize[b];
}
}
}
}
AgentList a;
for (int index = 0; index < bestCount; index++) {
b = bestn[index];
// Adjust it, using the size of super- and sub-intervals
double newSum = clusterMean[b] * clusterScore[b];
int newCount = clusterSize[b];
int newWeight = clusterScore[b];
for (i = 0; i < intervals; i++) {
if (i == b)
continue;
ratio = clusterMean[b] / clusterMean[i];
if (ratio < 1) {
degree = (int) nearbyint(1 / ratio);
if ((degree >= 2) && (degree <= 8)) {
err = std::fabs(clusterMean[b] * degree - clusterMean[i]);
if (err < clusterWidth) {
newSum += clusterMean[i] / degree * clusterScore[i];
newCount += clusterSize[i];
newWeight += clusterScore[i];
}
}
}
else {
degree = (int) nearbyint(ratio);
if ((degree >= 2) && (degree <= 8)) {
err = std::fabs(clusterMean[b] - degree * clusterMean[i]);
if (err < clusterWidth * degree) {
newSum += clusterMean[i] * degree * clusterScore[i];
newCount += clusterSize[i];
newWeight += clusterScore[i];
}
}
}
}
double beat = newSum / newWeight;
// Scale within range ... hope the grouping isn't ternary :(
while (beat < minIBI) // Maximum speed
beat *= 2.0;
while (beat > maxIBI) // Minimum speed
beat /= 2.0;
if (beat >= minIBI) {
a.push_back(new Agent(params, beat));
}
}
return a;
}
void Configuration::readApplicationSettings(xml_node<> *app)
{
xml_node<> *sess = singleChildElement(app, "session-management");
if (sess) {
xml_node<> *dedicated = singleChildElement(sess, "dedicated-process");
xml_node<> *shared = singleChildElement(sess, "shared-process");
std::string tracking = singleChildElementValue(sess, "tracking", "");
if (dedicated && shared)
throw WServer::Exception("<application-settings> requires either "
"<dedicated-process> or <shared-process>, "
"not both");
if (dedicated) {
sessionPolicy_ = DedicatedProcess;
setInt(dedicated, "max-num-sessions", maxNumSessions_);
}
if (shared) {
sessionPolicy_ = SharedProcess;
setInt(shared, "num-processes", numProcesses_);
}
if (!tracking.empty()) {
if (tracking == "Auto")
sessionTracking_ = CookiesURL;
else if (tracking == "URL")
sessionTracking_ = URL;
else
throw WServer::Exception("<session-tracking>: expecting 'Auto' "
"or 'URL'");
}
setInt(sess, "timeout", sessionTimeout_);
setInt(sess, "bootstrap-timeout", bootstrapTimeout_);
setInt(sess, "server-push-timeout", serverPushTimeout_);
setBoolean(sess, "reload-is-new-session", reloadIsNewSession_);
}
std::string maxRequestStr
= singleChildElementValue(app, "max-request-size", "");
if (!maxRequestStr.empty())
maxRequestSize_ = boost::lexical_cast< ::int64_t >(maxRequestStr) * 1024;
std::string debugStr = singleChildElementValue(app, "debug", "");
if (!debugStr.empty()) {
if (debugStr == "stack")
errorReporting_ = ErrorMessageWithStack;
else if (debugStr == "true")
errorReporting_ = NoErrors;
else if (debugStr == "false")
errorReporting_ = ErrorMessage;
else
throw WServer::Exception("<debug>: expecting 'true', 'false',"
"or 'stack'");
}
setInt(app, "num-threads", numThreads_);
xml_node<> *fcgi = singleChildElement(app, "connector-fcgi");
if (!fcgi)
fcgi = app; // backward compatibility
valgrindPath_ = singleChildElementValue(fcgi, "valgrind-path",
valgrindPath_);
runDirectory_ = singleChildElementValue(fcgi, "run-directory",
runDirectory_);
setInt(fcgi, "num-threads", numThreads_); // backward compatibility < 3.2.0
xml_node<> *isapi = singleChildElement(app, "connector-isapi");
if (!isapi)
isapi = app; // backward compatibility
setInt(isapi, "num-threads", numThreads_); // backward compatibility < 3.2.0
std::string maxMemoryRequestSizeStr =
singleChildElementValue(isapi, "max-memory-request-size", "");
if (!maxMemoryRequestSizeStr.empty()) {
isapiMaxMemoryRequestSize_ = boost::lexical_cast< ::int64_t >
(maxMemoryRequestSizeStr) * 1024;
}
setInt(app, "session-id-length", sessionIdLength_);
/*
* If a session-id-prefix is defined in the configuration file, then
* we loose the prefix defined by the connector (e.g. wthttpd), but who
* would do such a thing ? */
connectorSessionIdPrefix_
= singleChildElementValue(app,"session-id-prefix",
connectorSessionIdPrefix_);
setBoolean(app, "send-xhtml-mime-type", xhtmlMimeType_);
if (xhtmlMimeType_)
LOG_WARN("ignoring send-xhtml-mime-type setting: HTML5 is now always used");
redirectMsg_ = singleChildElementValue(app, "redirect-message", redirectMsg_);
setBoolean(app, "behind-reverse-proxy", behindReverseProxy_);
setBoolean(app, "strict-event-serialization", serializedEvents_);
setBoolean(app, "web-sockets", webSockets_);
setBoolean(app, "inline-css", inlineCss_);
setBoolean(app, "persistent-sessions", persistentSessions_);
uaCompatible_ = singleChildElementValue(app, "UA-Compatible", "");
setBoolean(app, "progressive-bootstrap", progressiveBoot_);
if (progressiveBoot_)
setBoolean(app, "split-script", splitScript_);
setBoolean(app, "session-id-cookie", sessionIdCookie_);
setBoolean(app, "cookie-checks", cookieChecks_);
std::string plainAjaxSessionsRatioLimit
= singleChildElementValue(app, "plain-ajax-sessions-ratio-limit", "");
if (!plainAjaxSessionsRatioLimit.empty())
maxPlainSessionsRatio_
= boost::lexical_cast<float>(plainAjaxSessionsRatioLimit);
setBoolean(app, "ajax-puzzle", ajaxPuzzle_);
setInt(app, "indicator-timeout", indicatorTimeout_);
setInt(app, "double-click-timeout", doubleClickTimeout_);
std::vector<xml_node<> *> userAgents = childElements(app, "user-agents");
for (unsigned i = 0; i < userAgents.size(); ++i) {
xml_node<> *userAgentsList = userAgents[i];
std::string type;
if (!attributeValue(userAgentsList, "type", type))
throw WServer::Exception("<user-agents> requires attribute 'type'");
std::string mode;
attributeValue(userAgentsList, "mode", mode);
AgentList *list;
if (type == "ajax") {
list = &ajaxAgentList_;
if (mode == "black-list")
ajaxAgentWhiteList_ = false;
else if (mode == "white-list")
ajaxAgentWhiteList_ = true;
else
throw WServer::Exception
("<user-agents type=\"ajax\" requires attribute 'mode' with value "
"\"white-list\" or \"black-list\"");
} else if (type == "bot")
list = &botList_;
else
throw WServer::Exception
("<user-agents> requires attribute 'type' with value "
"\"ajax\" or \"bot\"");
std::vector<xml_node<> *> agents
= childElements(userAgentsList, "user-agent");
for (unsigned j = 0; j < agents.size(); ++j)
list->push_back(elementValue(agents[j], "user-agent"));
}
xml_node<> *properties = singleChildElement(app, "properties");
if (properties) {
std::vector<xml_node<> *> nodes = childElements(properties, "property");
for (unsigned i = 0; i < nodes.size(); ++i) {
xml_node<> *property = nodes[i];
std::string name;
if (!attributeValue(property, "name", name))
throw WServer::Exception("<property> requires attribute 'name'");
std::string value = elementValue(property, "property");
if (name == "approot")
name = "appRoot";
if (name == "appRoot" && !appRoot_.empty())
LOG_WARN("ignoring configuration property 'appRoot' ("
<< value
<< ") because was already set to " << appRoot_);
else
properties_[name] = value;
}
}
}
