mirror of
https://github.com/OpenNebula/one.git
synced 2024-12-27 03:21:29 +03:00
427 lines
11 KiB
C++
427 lines
11 KiB
C++
/* ------------------------------------------------------------------------ */
|
|
/* Copyright 2002-2011, 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 IMAGE_H_
|
|
#define IMAGE_H_
|
|
|
|
#include "PoolSQL.h"
|
|
#include "ImageTemplate.h"
|
|
#include "NebulaLog.h"
|
|
|
|
using namespace std;
|
|
|
|
/**
|
|
* The Image class.
|
|
*/
|
|
class Image : public PoolObjectSQL
|
|
{
|
|
public:
|
|
/**
|
|
* Type of Images
|
|
*/
|
|
enum ImageType
|
|
{
|
|
OS = 0, /** < Base OS image */
|
|
CDROM = 1, /** < An ISO9660 image */
|
|
DATABLOCK = 2 /** < User persistent data device */
|
|
};
|
|
|
|
/**
|
|
* Image State
|
|
*/
|
|
enum ImageState
|
|
{
|
|
INIT = 0, /** < Initialization state */
|
|
READY = 1, /** < Image ready to use */
|
|
USED = 2, /** < Image in use */
|
|
DISABLED = 3, /** < Image can not be instantiated by a VM */
|
|
LOCKED = 4, /** < FS operation for the Image in process */
|
|
ERROR = 5 /** < Error state the operation FAILED*/
|
|
};
|
|
|
|
// *************************************************************************
|
|
// Image Public Methods
|
|
// *************************************************************************
|
|
|
|
/**
|
|
* Function to print the Image 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;
|
|
|
|
/**
|
|
* Rebuilds the object from an xml formatted string
|
|
* @param xml_str The xml-formatted string
|
|
*
|
|
* @return 0 on success, -1 otherwise
|
|
*/
|
|
int from_xml(const string &xml_str);
|
|
|
|
/**
|
|
* Returns true if the image is persistent
|
|
* @return true if the image is persistent
|
|
*/
|
|
bool isPersistent() const
|
|
{
|
|
return (persistent_img == 1);
|
|
};
|
|
|
|
/**
|
|
* Returns the source path of the image
|
|
* @return source of image
|
|
*/
|
|
const string& get_source() const
|
|
{
|
|
return source;
|
|
}
|
|
|
|
/**
|
|
* Returns the original path of the image
|
|
* @return path of image
|
|
*/
|
|
const string& get_path() const
|
|
{
|
|
return path;
|
|
}
|
|
|
|
/**
|
|
* Returns the fs_type for the image (defined for datablocks)
|
|
* @return fs_type
|
|
*/
|
|
const string& get_fstype() const
|
|
{
|
|
return fs_type;
|
|
}
|
|
|
|
/**
|
|
* Returns the size of the image
|
|
* @return size in mb
|
|
*/
|
|
int get_size() const
|
|
{
|
|
return size_mb;
|
|
}
|
|
|
|
/**
|
|
* Sets the source path of the image
|
|
*/
|
|
void set_source(const string& _source)
|
|
{
|
|
source = _source;
|
|
}
|
|
|
|
/**
|
|
* Sets the size for the image
|
|
*/
|
|
void set_size(unsigned int _size_mb)
|
|
{
|
|
size_mb = _size_mb;
|
|
}
|
|
|
|
/**
|
|
* Returns the type of the image
|
|
* @return type
|
|
*/
|
|
ImageType get_type()
|
|
{
|
|
return type;
|
|
}
|
|
/**
|
|
* Returns the image state
|
|
* @return state of image
|
|
*/
|
|
ImageState get_state()
|
|
{
|
|
return state;
|
|
}
|
|
|
|
/**
|
|
* Sets the image state
|
|
* @param state of image
|
|
*/
|
|
void set_state(ImageState _state)
|
|
{
|
|
state = _state;
|
|
}
|
|
|
|
/**
|
|
*
|
|
*/
|
|
int dec_running ()
|
|
{
|
|
return --running_vms;
|
|
}
|
|
|
|
/**
|
|
*
|
|
*/
|
|
int inc_running()
|
|
{
|
|
return ++running_vms;
|
|
}
|
|
|
|
/**
|
|
*
|
|
*/
|
|
int get_running()
|
|
{
|
|
return running_vms;
|
|
}
|
|
|
|
/**
|
|
* Sets the Image type.
|
|
*
|
|
* @param _type the new type. It will be transformed to upper case
|
|
* @return 0 on success, -1 otherwise
|
|
*/
|
|
int set_type(string& _type);
|
|
|
|
/**
|
|
* Check if the image can be used by other users
|
|
* @return true if group or others can access the image
|
|
*/
|
|
bool isPublic()
|
|
{
|
|
return (group_u == 1 || other_u == 1);
|
|
}
|
|
|
|
/**
|
|
* Set permissions for the Image. Extends the PoolSQLObject method
|
|
* by checking the persistent state of the image.
|
|
*/
|
|
int set_permissions(int _owner_u,
|
|
int _owner_m,
|
|
int _owner_a,
|
|
int _group_u,
|
|
int _group_m,
|
|
int _group_a,
|
|
int _other_u,
|
|
int _other_m,
|
|
int _other_a,
|
|
string& error_str)
|
|
{
|
|
if ( isPersistent() && (_group_u == 1 || _other_u == 1) )
|
|
{
|
|
error_str = "Image cannot be public and persistent.";
|
|
|
|
return -1;
|
|
}
|
|
|
|
return PoolObjectSQL::set_permissions(_owner_u, _owner_m, _owner_a,
|
|
_group_u, _group_m, _group_a,
|
|
_other_u, _other_m, _other_a,
|
|
error_str);
|
|
};
|
|
|
|
/**
|
|
* Set/Unset an image as persistent
|
|
* @param persistent true to make an image persistent
|
|
* @param error_str Returns the error reason, if any
|
|
*
|
|
* @return 0 on success
|
|
*/
|
|
int persistent(bool persis, string& error_str)
|
|
{
|
|
if ( running_vms != 0 )
|
|
{
|
|
goto error_vms;
|
|
}
|
|
|
|
if (persis == true)
|
|
{
|
|
|
|
if ( isPublic() )
|
|
{
|
|
goto error_public;
|
|
}
|
|
|
|
persistent_img = 1;
|
|
}
|
|
else
|
|
{
|
|
persistent_img = 0;
|
|
}
|
|
|
|
return 0;
|
|
|
|
error_vms:
|
|
error_str = "Image cannot be in 'used' state.";
|
|
goto error_common;
|
|
|
|
error_public:
|
|
error_str = "Image cannot be public and persistent.";
|
|
goto error_common;
|
|
|
|
error_common:
|
|
return -1;
|
|
|
|
}
|
|
|
|
/**
|
|
* Modifies the given disk attribute adding the following attributes:
|
|
* * SOURCE: the file-path.
|
|
* * BUS: will only be set if the Image's definition includes it.
|
|
* * TARGET: the value set depends on:
|
|
* - OS images will be mounted at prefix + a: hda, sda.
|
|
* - Prefix + b is reserved for the contex cdrom.
|
|
* - CDROM images will be at prefix + c: hdc, sdc.
|
|
* - Several DATABLOCK images can be mounted, they will be set to
|
|
* prefix + (d + index) : hdd, hde, hdf...
|
|
* @param disk attribute for the VM template
|
|
* @param index number of datablock images used by the same VM. Will be
|
|
* automatically increased.
|
|
* @param img_type will be set to the used image's type
|
|
*/
|
|
int disk_attribute(VectorAttribute * disk, int* index, ImageType* img_type);
|
|
|
|
/**
|
|
* Factory method for image templates
|
|
*/
|
|
Template * get_new_template()
|
|
{
|
|
return new ImageTemplate;
|
|
}
|
|
|
|
private:
|
|
|
|
// -------------------------------------------------------------------------
|
|
// Friends
|
|
// -------------------------------------------------------------------------
|
|
|
|
friend class ImagePool;
|
|
|
|
// -------------------------------------------------------------------------
|
|
// Image Description
|
|
// -------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Type of the Image
|
|
*/
|
|
ImageType type;
|
|
|
|
/**
|
|
* Persistency of the Image
|
|
*/
|
|
int persistent_img;
|
|
|
|
/**
|
|
* Registration time
|
|
*/
|
|
time_t regtime;
|
|
|
|
/**
|
|
* Path to the image
|
|
*/
|
|
string source;
|
|
|
|
/**
|
|
* Original Path to the image (optional if source is given or datablock)
|
|
*/
|
|
string path;
|
|
|
|
/**
|
|
* File system type for the image (mandatory for datablocks)
|
|
*/
|
|
string fs_type;
|
|
|
|
/**
|
|
* Size of the image in MB
|
|
*/
|
|
unsigned int size_mb;
|
|
|
|
/**
|
|
* Image state
|
|
*/
|
|
ImageState state;
|
|
|
|
/**
|
|
* Number of VMs using the image
|
|
*/
|
|
int running_vms;
|
|
|
|
// *************************************************************************
|
|
// DataBase implementation (Private)
|
|
// *************************************************************************
|
|
|
|
/**
|
|
* Execute an INSERT or REPLACE Sql query.
|
|
* @param db The SQL DB
|
|
* @param replace Execute an INSERT or a REPLACE
|
|
* @param error_str Returns the error reason, if any
|
|
* @return 0 on success
|
|
*/
|
|
int insert_replace(SqlDB *db, bool replace, string& error_str);
|
|
|
|
/**
|
|
* Bootstraps the database table(s) associated to the Image
|
|
* @return 0 on success
|
|
*/
|
|
static int bootstrap(SqlDB * db)
|
|
{
|
|
ostringstream oss_image(Image::db_bootstrap);
|
|
|
|
return db->exec(oss_image);
|
|
};
|
|
|
|
/**
|
|
* "Encrypts" the password with SHA1 digest
|
|
* @param password
|
|
* @return sha1 encrypted password
|
|
*/
|
|
static string sha1_digest(const string& pass);
|
|
|
|
protected:
|
|
|
|
// *************************************************************************
|
|
// Constructor
|
|
// *************************************************************************
|
|
|
|
Image(int uid,
|
|
int gid,
|
|
const string& uname,
|
|
const string& gname,
|
|
ImageTemplate* img_template);
|
|
|
|
virtual ~Image();
|
|
|
|
// *************************************************************************
|
|
// DataBase implementation
|
|
// *************************************************************************
|
|
|
|
static const char * db_names;
|
|
|
|
static const char * db_bootstrap;
|
|
|
|
static const char * table;
|
|
|
|
/**
|
|
* Writes the Image in the database.
|
|
* @param db pointer to the db
|
|
* @return 0 on success
|
|
*/
|
|
virtual int insert(SqlDB *db, string& error_str);
|
|
|
|
/**
|
|
* Writes/updates the Images data fields in the database.
|
|
* @param db pointer to the db
|
|
* @return 0 on success
|
|
*/
|
|
virtual int update(SqlDB *db);
|
|
};
|
|
|
|
#endif /*IMAGE_H_*/
|