mirror of
https://github.com/OpenNebula/one.git
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229 lines
7.7 KiB
C++
229 lines
7.7 KiB
C++
/* -------------------------------------------------------------------------- */
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/* Copyright 2002-2013, OpenNebula Project (OpenNebula.org), C12G Labs */
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/* */
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/* Licensed under the Apache License, Version 2.0 (the "License"); you may */
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/* not use this file except in compliance with the License. You may obtain */
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/* a copy of the License at */
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/* */
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/* http://www.apache.org/licenses/LICENSE-2.0 */
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/* */
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/* Unless required by applicable law or agreed to in writing, software */
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/* distributed under the License is distributed on an "AS IS" BASIS, */
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/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */
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/* See the License for the specific language governing permissions and */
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/* limitations under the License. */
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/* -------------------------------------------------------------------------- */
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#ifndef IMAGE_POOL_H_
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#define IMAGE_POOL_H_
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#include "PoolSQL.h"
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#include "Image.h"
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#include "NebulaLog.h"
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#include "Datastore.h"
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#include <time.h>
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#include <sstream>
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#include <iostream>
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#include <vector>
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class AuthRequest;
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using namespace std;
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/**
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* The Image Pool class.
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*/
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class ImagePool : public PoolSQL
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{
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public:
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ImagePool(SqlDB * db,
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const string& _default_type,
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const string& _default_dev_prefix,
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vector<const Attribute *>& restricted_attrs,
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vector<const Attribute *> hook_mads,
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const string& remotes_location);
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~ImagePool(){};
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/**
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* Function to allocate a new Image object
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* @param uid the user id of the image's owner
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* @param gid the id of the group this object is assigned to
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* @param uname name of the user
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* @param gname name of the group
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* @param umask permissions umask
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* @param img_template template associated with the image
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* @param ds_id the id of the datastore
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* @param ds_name the name of the datastore
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* @param ds_type disk type for the image
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* @param ds_data the datastore data
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* @param ds_type the datastore type
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* @param source_img_id If the new Image is a clone, this must be the
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* source Image ID. Otherwise, it must be set to -1
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* @param oid the id assigned to the Image
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* @param error_str Returns the error reason, if any
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* @return the oid assigned to the object,
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* -1 in case of failure
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* -2 in case of template parse failure
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*/
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int allocate (
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int uid,
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int gid,
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const string& uname,
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const string& gname,
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int umask,
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ImageTemplate * img_template,
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int ds_id,
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const string& ds_name,
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Image::DiskType disk_type,
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const string& ds_data,
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Datastore::DatastoreType ds_type,
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int source_img_id,
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int * oid,
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string& error_str);
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/**
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** Function to get a Image from the pool, if the object is not in memory
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* it is loaded from the DB
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* @param oid Image unique id
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* @param lock locks the Image mutex
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* @return a pointer to the Image, 0 if the Image could not be loaded
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*/
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Image * get(int oid, bool lock)
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{
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return static_cast<Image *>(PoolSQL::get(oid,lock));
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};
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/**
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* Gets an object from the pool (if needed the object is loaded from the
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* database).
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* @param name of the object
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* @param uid id of owner
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* @param lock locks the object if true
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*
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* @return a pointer to the object, 0 in case of failure
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*/
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Image * get(const string& name, int uid, bool lock)
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{
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return static_cast<Image *>(PoolSQL::get(name,uid,lock));
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};
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/**
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* Update a particular Image
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* @param image pointer to Image
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* @return 0 on success
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*/
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int update(Image * image)
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{
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return image->update(db);
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};
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/**
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* Bootstraps the database table(s) associated to the Image pool
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* @return 0 on success
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*/
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static int bootstrap(SqlDB *_db)
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{
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return Image::bootstrap(_db);
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};
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/**
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* Dumps the Image pool in XML format. A filter can be also added to the
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* query
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* @param oss the output stream to dump the pool contents
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* @param where filter for the objects, defaults to all
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* @return 0 on success
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*/
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int dump(ostringstream& oss, const string& where)
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{
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return PoolSQL::dump(oss, "IMAGE_POOL", Image::table, where);
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}
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/**
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* Generates a DISK attribute for VM templates using the Image metadata
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*
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* @param disk the disk to be generated
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* @param disk_id the id for this disk
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* @param img_type will be set to the used image's type
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* @param dev_prefix will be set to the image defined dev_prefix,
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* or the default one
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* @param uid of VM owner (to look for the image id within its images)
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* @param image_id on success returns the acquired image id
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* @param error_str string describing the error
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*
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* @return 0 on success, -1 otherwise
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*/
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int disk_attribute(int vm_id,
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VectorAttribute * disk,
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int disk_id,
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Image::ImageType& img_type,
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string& dev_prefix,
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int uid,
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int& image_id,
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string& error_str);
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/**
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* Generates an Authorization token for the DISK attribute
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* @param disk the disk to be authorized
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* @param uid of owner (to look for the image id within her images)
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* @param ar the AuthRequest
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*/
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void authorize_disk(VectorAttribute * disk, int uid, AuthRequest * ar);
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static const string& default_type()
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{
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return _default_type;
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};
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static const string& default_dev_prefix()
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{
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return _default_dev_prefix;
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};
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/**
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* Get the effective uid to get an image. Used in VM parsers
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* @param disk a vector attribute with the image data
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* @param uid default uid
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* @return the uid to get the image;
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*/
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static int get_disk_uid(VectorAttribute * disk, int _uid);
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/**
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* Get the disk id based on its string representation. Used in VM parsers
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* @param id_s the string id
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* @return the id in int form
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*/
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static int get_disk_id(const string& id_s);
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private:
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//--------------------------------------------------------------------------
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// Configuration Attributes for Images
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// -------------------------------------------------------------------------
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/**
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* Default image type
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**/
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static string _default_type;
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/**
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* Default device prefix
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**/
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static string _default_dev_prefix;
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//--------------------------------------------------------------------------
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// Pool Attributes
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// -------------------------------------------------------------------------
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/**
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* Factory method to produce Image objects
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* @return a pointer to the new Image
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*/
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PoolObjectSQL * create()
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{
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return new Image(-1,-1,"","",0,0);
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};
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};
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#endif /*IMAGE_POOL_H_*/
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