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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* 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 Server Side 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/db/commands/server_status_internal.h"
#include <iostream>
#include "mongo/db/commands/server_status_metric.h"
#include "mongo/util/str.h"
namespace mongo {
using std::cerr;
using std::endl;
using std::map;
using std::string;
MetricTree* MetricTree::theMetricTree = NULL;
void MetricTree::add(ServerStatusMetric* metric) {
string name = metric->getMetricName();
if (name[0] == '.')
_add(name.substr(1), metric);
else
_add(str::stream() << "metrics." << name, metric);
}
void MetricTree::_add(const string& path, ServerStatusMetric* metric) {
size_t idx = path.find(".");
if (idx == string::npos) {
_metrics[path] = metric;
return;
}
string myLevel = path.substr(0, idx);
if (_metrics.count(myLevel) > 0) {
cerr << "metric conflict on: " << myLevel << endl;
fassertFailed(16461);
}
MetricTree*& sub = _subtrees[myLevel];
if (!sub)
sub = new MetricTree();
sub->_add(path.substr(idx + 1), metric);
}
void MetricTree::appendTo(BSONObjBuilder& b) const {
for (map<string, ServerStatusMetric*>::const_iterator i = _metrics.begin(); i != _metrics.end();
++i) {
i->second->appendAtLeaf(b);
}
for (map<string, MetricTree*>::const_iterator i = _subtrees.begin(); i != _subtrees.end();
++i) {
BSONObjBuilder bb(b.subobjStart(i->first));
i->second->appendTo(bb);
bb.done();
}
}
} // namespace mongo
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