/**
* Copyright (C) 2012 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 .
*
* 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/s/type_tags.h"
#include "mongo/db/field_parser.h"
#include "mongo/util/mongoutils/str.h"
namespace mongo {
using std::string;
using mongoutils::str::stream;
const std::string TagsType::ConfigNS = "config.tags";
const BSONField TagsType::ns("ns");
const BSONField TagsType::tag("tag");
const BSONField TagsType::min("min");
const BSONField TagsType::max("max");
TagsType::TagsType() {
clear();
}
TagsType::~TagsType() {
}
bool TagsType::isValid(std::string* errMsg) const {
std::string dummy;
if (errMsg == NULL) {
errMsg = &dummy;
}
// All the mandatory fields must be present.
if (!_isNsSet) {
*errMsg = stream() << "missing " << ns.name() << " field";
return false;
}
if (!_isTagSet) {
*errMsg = stream() << "missing " << tag.name() << " field";
return false;
}
if (!_isMinSet) {
*errMsg = stream() << "missing " << min.name() << " field";
return false;
}
if (!_isMaxSet) {
*errMsg = stream() << "missing " << max.name() << " field";
return false;
}
// NOTE: all the following semantic checks should eventually become the caller's
// responsibility, and should be moved out of this class completely
// 'min' and 'max' must share the same fields.
if (_min.nFields() != _max.nFields()) {
*errMsg = stream() << "min and max have a different number of keys";
return false;
}
BSONObjIterator minIt(_min);
BSONObjIterator maxIt(_max);
while (minIt.more() && maxIt.more()) {
BSONElement minElem = minIt.next();
BSONElement maxElem = maxIt.next();
if (strcmp(minElem.fieldName(), maxElem.fieldName())) {
*errMsg = stream() << "min and max must have the same set of keys";
return false;
}
}
// 'max' should be greater than 'min'.
if (_min.woCompare(_max) >= 0) {
*errMsg = stream() << "max key must be greater than min key";
return false;
}
return true;
}
BSONObj TagsType::toBSON() const {
BSONObjBuilder builder;
if (_isNsSet) builder.append(ns(), _ns);
if (_isTagSet) builder.append(tag(), _tag);
if (_isMinSet) builder.append(min(), _min);
if (_isMaxSet) builder.append(max(), _max);
return builder.obj();
}
bool TagsType::parseBSON(const BSONObj& source, string* errMsg) {
clear();
std::string dummy;
if (!errMsg) errMsg = &dummy;
FieldParser::FieldState fieldState;
fieldState = FieldParser::extract(source, ns, &_ns, errMsg);
if (fieldState == FieldParser::FIELD_INVALID) return false;
_isNsSet = fieldState == FieldParser::FIELD_SET;
fieldState = FieldParser::extract(source, tag, &_tag, errMsg);
if (fieldState == FieldParser::FIELD_INVALID) return false;
_isTagSet = fieldState == FieldParser::FIELD_SET;
fieldState = FieldParser::extract(source, min, &_min, errMsg);
if (fieldState == FieldParser::FIELD_INVALID) return false;
_isMinSet = fieldState == FieldParser::FIELD_SET;
fieldState = FieldParser::extract(source, max, &_max, errMsg);
if (fieldState == FieldParser::FIELD_INVALID) return false;
_isMaxSet = fieldState == FieldParser::FIELD_SET;
return true;
}
void TagsType::clear() {
_ns.clear();
_isNsSet = false;
_tag.clear();
_isTagSet = false;
_min = BSONObj();
_isMinSet = false;
_max = BSONObj();
_isMaxSet = false;
}
void TagsType::cloneTo(TagsType* other) const {
other->clear();
other->_ns = _ns;
other->_isNsSet = _isNsSet;
other->_tag = _tag;
other->_isTagSet = _isTagSet;
other->_min = _min;
other->_isMinSet = _isMinSet;
other->_max = _max;
other->_isMaxSet = _isMaxSet;
}
std::string TagsType::toString() const {
return toBSON().toString();
}
} // namespace mongo