diff --git a/master/status_httpd.cc b/master/status_httpd.cc
index 3c807783ccbdde7415aed9198d201e93fd8bcb9d..e1e1e6793ff2a8fd8cffa2b52759fd5b985b0c9e 100644
--- a/master/status_httpd.cc
+++ b/master/status_httpd.cc
@@ -1,15 +1,62 @@
// $Id$
+#include <numeric>
#include <iostream>
#include <sstream>
#include <string>
#include "status_httpd.h"
+using namespace std;
+
namespace dos {
+static void normalize(vector<double>& values)
+{
+ ostringstream ds;
+ double min = min_element(values.begin(), values.end());
+ double max = max_element(values.begin(), values.end());
+ vector<double>::iterator i;
+ for (i = values.begin(); i != values.end(); ++i)
+ *i = (*i - min) / (max - min);
+}
+
+static string to_dataset(vector<double>& values)
+{
+ static const char vchar[] =
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
+ normalize(values);
+ ostringstream ds;
+ vector<double>::const_iterator i;
+ for (i = values.begin(); i != values.end(); ++i)
+ ds << vchar[static_cast<int>(100 * (*i))];
+ return ds.str();
+}
+
+static string qps_graph(const vector<QpsTuple>& qps_values,
+ int width=500, int height=200)
+{
+ ostringstream url;
+ url << "http://chart.apis.google.com/chart"
+ << "?chs=" << width << "x" << height
+ << "&cht=lc";
+
+ vector<double> stdup, avg, stddown;
+ vector<QpsTuple>::const_iterator i;
+ for (i = qps_values.begin(); i != qps_values.end(); ++i) {
+ stdup.push_back((*i).value + (*i).std_dev);
+ avg.push_back((*i).value);
+ stddown.push_back((*i).value - (*i).std_dev);
+ }
+
+ url << "&chd=s:"
+ << to_dataset(stdup) << ","
+ << to_dataset(avg) << ","
+ << to_dataset(stddown);
+}
+
void StatusHttpd::handle_status(evhttp_request *req)
{
- std::ostringstream resp;
+ ostringstream resp;
resp << "<?xml version=\"1.0\"?>\n"
<< "<html lang=\"en\">\n"
@@ -19,13 +66,20 @@ void StatusHttpd::handle_status(evhttp_request *req)
resp << "<h1>NoDDoS Master</h1>";
- resp << "<p>Global QPS: <b>" << logic->get_qps() << "</b></p>"
+ vector<QpsTuple> qps_values;
+ logic->get_store()->read_stats(qps_values, 24);
+ string graph_url = qps_graph(qps_values);
+ resp << "<table><tr><td valign=\"top\">"
+ << "<p>Global QPS: <b>" << logic->get_qps() << "</b></p>"
<< "<p>Global status: <b>" << logic->get_status().str()
- << "</b></p>\n";
+ << "</b></p>\n"
+ << "</td><td>"
+ << "<img src=\"" << graph_url << "\" border=\"0\"/>"
+ << "</td></tr></table>\n";
resp << "<h3>Nodes</h3><ul>";
- std::vector<std::string> nodes = logic->nodes();
- std::vector<std::string>::const_iterator i;
+ vector<string> nodes = logic->nodes();
+ vector<string>::const_iterator i;
for (i = nodes.begin(); i != nodes.end(); i++)
resp << "<li><a href=\"http://" << (*i)
<< "/\">" << (*i) << "</a></li>";
@@ -33,7 +87,7 @@ void StatusHttpd::handle_status(evhttp_request *req)
resp << "<h3>Blacklisted hosts</h3><table class=\"d\">"
<< "<thead><tr><th>IP</th></tr></thead><tbody>";
- std::vector<std::string> blacklist = logic->get_blacklist();
+ vector<string> blacklist = logic->get_blacklist();
for (i = blacklist.begin(); i != blacklist.end(); i++)
resp << "<tr><td>" << (*i) << "</td></tr>";
resp << "</tbody></table>\n";