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/**
* Copyright (C) 2008 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/dbwebserver.h"
#include "mongo/db/operation_context.h"
#include "mongo/db/stats/snapshots.h"
#include "mongo/util/mongoutils/html.h"
namespace mongo {
namespace {
using namespace html;
using std::fixed;
using std::setprecision;
using std::string;
using std::stringstream;
class DBTopStatus : public WebStatusPlugin {
public:
DBTopStatus() : WebStatusPlugin("dbtop", 50, "(occurrences|percent of elapsed)") {}
void display(stringstream& ss, double elapsed, const Top::UsageData& usage) {
ss << "<td>";
ss << usage.count;
ss << "</td><td>";
double per = 100 * ((double)usage.time) / elapsed;
if (per == (int)per)
ss << (int)per;
else {
const auto precision = ss.precision();
const auto flags = ss.flags();
ss << setprecision(1) << fixed << per;
ss.flags(flags);
ss.precision(precision);
}
ss << '%';
ss << "</td>";
}
void display(stringstream& ss,
double elapsed,
const string& ns,
const Top::CollectionData& data) {
if (ns != "TOTAL" && data.total.count == 0)
return;
ss << "<tr><th>" << html::escape(ns) << "</th>";
display(ss, elapsed, data.total);
display(ss, elapsed, data.readLock);
display(ss, elapsed, data.writeLock);
display(ss, elapsed, data.queries);
display(ss, elapsed, data.getmore);
display(ss, elapsed, data.insert);
display(ss, elapsed, data.update);
display(ss, elapsed, data.remove);
ss << "</tr>\n";
}
void run(OperationContext* txn, stringstream& ss) {
StatusWith<SnapshotDiff> diff = statsSnapshots.computeDelta();
if (!diff.isOK())
return;
ss << "<table border=1 cellpadding=2 cellspacing=0>";
ss << "<tr align='left'><th>";
ss << a("http://dochub.mongodb.org/core/whatisanamespace", "namespace")
<< "NS</a></th>"
"<th colspan=2>total</th>"
"<th colspan=2>Reads</th>"
"<th colspan=2>Writes</th>"
"<th colspan=2>Queries</th>"
"<th colspan=2>GetMores</th>"
"<th colspan=2>Inserts</th>"
"<th colspan=2>Updates</th>"
"<th colspan=2>Removes</th>";
ss << "</tr>\n";
const Top::UsageMap& usage = diff.getValue().usageDiff;
unsigned long long elapsed = diff.getValue().timeElapsed;
for (Top::UsageMap::const_iterator i = usage.begin(); i != usage.end(); ++i) {
display(ss, (double)elapsed, i->first, i->second);
}
ss << "</table>";
}
virtual void init() {}
} dbtopStatus;
} // namespace
} // namespace mongo
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