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one/include/History.h
2010-04-10 22:16:47 +02:00

216 lines
5.9 KiB
C++

/* -------------------------------------------------------------------------- */
/* Copyright 2002-2010, OpenNebula Project Leads (OpenNebula.org) */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); you may */
/* not use this file except in compliance with the License. You may obtain */
/* a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */
/* See the License for the specific language governing permissions and */
/* limitations under the License. */
/* -------------------------------------------------------------------------- */
#ifndef HISTORY_H_
#define HISTORY_H_
#include "ObjectSQL.h"
using namespace std;
/**
* The History class, it represents an execution record of a Virtual Machine.
*/
class History:public ObjectSQL
{
public:
enum MigrationReason
{
NONE, /** < Normal termination in host */
ERROR, /** < The VM was migrated because of an error */
STOP_RESUME,/** < The VM was migrated because of a stop/resume request*/
USER, /** < The VM was migrated because of an explicit request */
CANCEL /** < The VM was migrated because of an explicit cancel */
};
History(int oid, int _seq = -1);
History(
int oid,
int seq,
int hid,
string& hostname,
string& vm_dir,
string& vmm,
string& tm);
~History(){};
/**
* Function to write the History Record in an output stream
*/
friend ostream& operator<<(ostream& os, const History& history);
/**
* Function to print the History object into a string in
* plain text
* @param str the resulting string
* @return a reference to the generated string
*/
string& to_str(string& str) const;
/**
* Function to print the History object into a string in
* XML format
* @param xml the resulting XML string
* @return a reference to the generated string
*/
string& to_xml(string& xml) const;
private:
friend class VirtualMachine;
friend class VirtualMachinePool;
// ----------------------------------------
// DataBase implementation variables
// ----------------------------------------
enum ColNames
{
VID = 0,
SEQ = 1,
HOSTNAME = 2,
VM_DIR = 3,
HID = 4,
VMMMAD = 5,
TMMAD = 6,
STIME = 7,
ETIME = 8,
PROLOG_STIME = 9,
PROLOG_ETIME = 10,
RUNNING_STIME = 11,
RUNNING_ETIME = 12,
EPILOG_STIME = 13,
EPILOG_ETIME = 14,
REASON = 15,
LIMIT = 16
};
static const char * table;
static const char * db_names;
static const char * db_bootstrap;
void non_persistent_data();
static string column_name(const ColNames column)
{
switch (column)
{
case HID:
return "hid";
case ETIME:
return "etime";
case RUNNING_ETIME:
return "retime";
default:
return "";
}
}
// ----------------------------------------
// History fields
// ----------------------------------------
int oid;
int seq;
string hostname;
string vm_dir;
int hid;
string vmm_mad_name;
string tm_mad_name;
time_t stime;
time_t etime;
time_t prolog_stime;
time_t prolog_etime;
time_t running_stime;
time_t running_etime;
time_t epilog_stime;
time_t epilog_etime;
MigrationReason reason;
//Non-persistent history fields
string vm_lhome;
string transfer_file;
string deployment_file;
string context_file;
string vm_rhome;
string checkpoint_file;
string rdeployment_file;
/**
* Writes the history record in the DB
* @param db pointer to the database.
* @return 0 on success.
*/
int insert(SqlDB * db);
/**
* Reads the history record from the DB
* @param db pointer to the database.
* @return 0 on success.
*/
int select(SqlDB * db);
/**
* Removes the all history records from the DB
* @param db pointer to the database.
* @return 0 on success.
*/
int drop(SqlDB * db);
/**
* Updates the history record
* @param db pointer to the database.
* @return 0 on success.
*/
int update(SqlDB * db)
{
return insert(db);
}
/**
* Callback function to unmarshall a history object (History::select)
* @param num the number of columns read from the DB
* @para names the column names
* @para vaues the column values
* @return 0 on success
*/
int select_cb(void *nil, int num, char **values, char **names);
/**
* Function to unmarshall a History object into an output stream with XML
* format.
* @param oss the output stream
* @param num the number of columns read from the DB
* @param names the column names
* @param vaues the column values
* @return 0 on success
*/
static int dump(ostringstream& oss, int num, char **names, char **values);
};
#endif /*HISTORY_H_*/