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/**
* Copyright (C) 2014 MongoDB 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.
*/
#pragma once
#include <string>
#include "mongo/base/disallow_copying.h"
#include "mongo/base/string_data.h"
#include "mongo/db/jsobj.h"
namespace mongo {
/**
* This class represents the layout and contents of documents contained in the
* config.actionlog collection. All manipulation of documents coming from that
* collection should be done with this class.
*
* Usage Example:
*
* // Contact the config. 'conn' has been obtained before.
* DBClientBase* conn;
* BSONObj query = QUERY(ActionLogType::exampleField("exampleFieldName"));
* exampleDoc = conn->findOne(ActionLogType::ConfigNS, query);
*
* // Process the response.
* ActionLogType exampleType;
* std::string errMsg;
* if (!exampleType.parseBSON(exampleDoc, &errMsg) || !exampleType.isValid(&errMsg)) {
* // Can't use 'exampleType'. Take action.
* }
* // use 'exampleType'
*
*/
class ActionLogType {
MONGO_DISALLOW_COPYING(ActionLogType);
public:
//
// schema declarations
//
// Name of the actionlog collection in the config server.
static const std::string ConfigNS;
// Field names and types in the actionlog collection type.
static const BSONField<std::string> server;
static const BSONField<std::string> what;
static const BSONField<Date_t> time;
static const BSONField<BSONObj> details;
// Common field names included under details
static const BSONField<int> candidateChunks;
static const BSONField<int> chunksMoved;
static const BSONField<bool> didError;
static const BSONField<long long> executionTimeMicros;
static const BSONField<std::string> errmsg;
//
// actionlog type methods
//
ActionLogType();
~ActionLogType();
/**
* Returns true if all the mandatory fields are present and have valid
* representations. Otherwise returns false and fills in the optional 'errMsg' string.
*/
bool isValid(std::string* errMsg) const;
/**
* Returns the BSON representation of the entry.
*/
BSONObj toBSON() const;
void buildDetails();
/**
* Clears and populates the internal state using the 'source' BSON object if the
* latter contains valid values. Otherwise sets errMsg and returns false.
*/
bool parseBSON(const BSONObj& source, std::string* errMsg);
/**
* Clears the internal state.
*/
void clear();
/**
* Copies all the fields present in 'this' to 'other'.
*/
void cloneTo(ActionLogType* other) const;
/**
* Returns a std::string representation of the current internal state.
*/
std::string toString() const;
//
// individual field accessors
//
void setServer(const StringData& server) {
_server = server.toString();
_isServerSet = true;
}
void unsetServer() { _isServerSet = false; }
bool isServerSet() const { return _isServerSet; }
// Calling get*() methods when the member is not set results in undefined behavior
const std::string& getServer() const {
dassert(_isServerSet);
return _what;
}
void setWhat(const StringData& what) {
_what = what.toString();
_isWhatSet = true;
}
void unsetWhat() { _isWhatSet = false; }
bool isWhatSet() const { return _isWhatSet; }
// Calling get*() methods when the member is not set results in undefined behavior
const std::string& getWhat() const {
dassert(_isWhatSet);
return _what;
}
void setTime(const Date_t time) {
_time = time;
_isTimeSet = true;
}
void unsetTime() { _isTimeSet = false; }
bool isTimeSet() const { return _isTimeSet; }
// Calling get*() methods when the member is not set results in undefined behavior
const Date_t getTime() const {
dassert(_isTimeSet);
return _time;
}
void setDetails(const BSONObj& details) {
_details = details.getOwned();
_isDetailsSet = true;
}
void unsetDetails() { _isDetailsSet = false; }
bool isDetailsSet() const { return _isDetailsSet; }
// Calling get*() methods when the member is not set results in undefined behavior
const BSONObj getDetails() const {
dassert(_isDetailsSet);
return _details;
}
private:
// Convention: (M)andatory, (O)ptional, (S)pecial rule.
std::string _server; // (M) hostname of server that we are making the change on.
// Does not include port.
bool _isServerSet;
std::string _what; // (M) what the action being performed was.
bool _isWhatSet;
Date_t _time; // (M) time this change was made
bool _isTimeSet;
BSONObj _details; // (M) A BSONObj containing extra information about some operations
bool _isDetailsSet;
};
} // namespace mongo
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