mirror of
https://github.com/OpenNebula/one.git
synced 2024-12-23 17:33:56 +03:00
c68c81a86e
Some backup drivers may not allow delete (forget) operations while an
active backup is being performed. This commits fails the
one.image.delete API call in that case.
A new configuration attribute to describe the related driver behavior has been
added CONCURRENT_FORGET for DS_MAD_CONF.
(cherry picked from commit 940c1d7d63)
451 lines
12 KiB
C++
451 lines
12 KiB
C++
/* ------------------------------------------------------------------------ */
|
|
/* Copyright 2002-2023, OpenNebula Project, OpenNebula Systems */
|
|
/* */
|
|
/* 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 DATASTORE_H_
|
|
#define DATASTORE_H_
|
|
|
|
#include "PoolObjectSQL.h"
|
|
#include "ObjectCollection.h"
|
|
#include "DatastoreTemplate.h"
|
|
#include "Clusterable.h"
|
|
#include "Image.h"
|
|
|
|
class VirtualMachineDisk;
|
|
|
|
/**
|
|
* The Datastore class.
|
|
*/
|
|
class Datastore : public PoolObjectSQL, public Clusterable
|
|
{
|
|
public:
|
|
/**
|
|
* Type of Datastore
|
|
*/
|
|
enum DatastoreType
|
|
{
|
|
IMAGE_DS = 0, /** < Standard datastore for disk images */
|
|
SYSTEM_DS = 1, /** < System datastore for disks of running VMs */
|
|
FILE_DS = 2, /** < File datastore for context, kernel, initrd files */
|
|
BACKUP_DS = 3 /** < Backup datastore for VMs */
|
|
};
|
|
|
|
/**
|
|
* Return the string representation of a DatastoreType
|
|
* @param ob the type
|
|
* @return the string
|
|
*/
|
|
static std::string type_to_str(DatastoreType ob)
|
|
{
|
|
switch (ob)
|
|
{
|
|
case IMAGE_DS: return "IMAGE_DS" ; break;
|
|
case SYSTEM_DS: return "SYSTEM_DS" ; break;
|
|
case FILE_DS: return "FILE_DS" ; break;
|
|
case BACKUP_DS: return "BACKUP_DS" ; break;
|
|
default: return "";
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Return the string representation of a DatastoreType
|
|
* @param str_type string representing the DatastoreTypr
|
|
* @return the DatastoreType (defaults to IMAGE_DS)
|
|
*/
|
|
static DatastoreType str_to_type(std::string& str_type);
|
|
|
|
/**
|
|
* Datastore State
|
|
*/
|
|
enum DatastoreState
|
|
{
|
|
READY = 0, /** < Datastore ready to use */
|
|
DISABLED = 1 /** < System Datastore can not be used */
|
|
};
|
|
|
|
/**
|
|
* Returns the string representation of a DatastoreState
|
|
* @param state The state
|
|
* @return the string representation
|
|
*/
|
|
static std::string state_to_str(DatastoreState state)
|
|
{
|
|
switch (state)
|
|
{
|
|
case READY: return "READY"; break;
|
|
case DISABLED: return "DISABLED"; break;
|
|
default: return "";
|
|
}
|
|
};
|
|
|
|
virtual ~Datastore() = default;
|
|
|
|
/**
|
|
* Function to print the Datastore object into a string in XML format
|
|
* @param xml the resulting XML string
|
|
* @return a reference to the generated string
|
|
*/
|
|
std::string& to_xml(std::string& xml) const override;
|
|
|
|
/**
|
|
* 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 std::string &xml_str) override;
|
|
|
|
/**
|
|
* Adds this image's ID to the set.
|
|
* @param id of the image to be added to the Datastore
|
|
* @return 0 on success
|
|
*/
|
|
int add_image(int id)
|
|
{
|
|
return images.add(id);
|
|
};
|
|
|
|
/**
|
|
* Deletes this image's ID from the set.
|
|
* @param id of the image to be deleted from the Datastore
|
|
* @return 0 on success
|
|
*/
|
|
int del_image(int id)
|
|
{
|
|
return images.del(id);
|
|
};
|
|
|
|
/**
|
|
* Returns a copy of the Image IDs set
|
|
*/
|
|
const std::set<int>& get_image_ids() const
|
|
{
|
|
return images.get_collection();
|
|
}
|
|
|
|
/**
|
|
* Returns the number of images
|
|
*/
|
|
int images_size()
|
|
{
|
|
return images.size();
|
|
}
|
|
|
|
/**
|
|
* Retrieves TM mad name
|
|
* @return string tm mad name
|
|
*/
|
|
const std::string& get_tm_mad() const
|
|
{
|
|
return tm_mad;
|
|
};
|
|
|
|
/**
|
|
* Retrieves DS mad name
|
|
* @return string ds mad name
|
|
*/
|
|
const std::string& get_ds_mad() const
|
|
{
|
|
return ds_mad;
|
|
};
|
|
|
|
/**
|
|
* Retrieves the base path
|
|
* @return base path string
|
|
*/
|
|
const std::string& get_base_path() const
|
|
{
|
|
return base_path;
|
|
};
|
|
|
|
/**
|
|
* Retrieves the disk type
|
|
* @return disk type
|
|
*/
|
|
Image::DiskType get_disk_type() const
|
|
{
|
|
return disk_type;
|
|
};
|
|
|
|
/**
|
|
* Returns the datastore type
|
|
* @return datastore type
|
|
*/
|
|
DatastoreType get_type() const
|
|
{
|
|
return type;
|
|
};
|
|
|
|
Image::DiskType context_disk_type() const;
|
|
|
|
/**
|
|
* Modifies the given VM disk attribute adding the relevant datastore
|
|
* attributes
|
|
*
|
|
* @param disk
|
|
* @param inherit_attrs Attributes to be inherited from the DS template
|
|
* into the disk
|
|
*/
|
|
void disk_attribute(
|
|
VirtualMachineDisk * disk,
|
|
const std::vector<std::string>& inherit_attrs);
|
|
|
|
/**
|
|
* Set monitor information for the Datastore
|
|
* @param total_mb
|
|
* @param free_mb
|
|
* @param used_mb
|
|
*/
|
|
void update_monitor(long long total, long long free, long long used)
|
|
{
|
|
total_mb = total;
|
|
free_mb = free;
|
|
used_mb = used;
|
|
}
|
|
|
|
/**
|
|
* Returns the available capacity in the datastore.
|
|
* @params avail the total available size in the datastore (MB)
|
|
* @return true if the datastore is configured to enforce capacity
|
|
* checkings
|
|
*/
|
|
bool get_avail_mb(long long &avail) const;
|
|
|
|
/**
|
|
* Returns true if the DS contains the SHARED = YES attribute
|
|
* @return true if the DS is shared
|
|
*/
|
|
bool is_shared()
|
|
{
|
|
bool shared;
|
|
|
|
if (!get_template_attribute("SHARED", shared))
|
|
{
|
|
shared = true;
|
|
}
|
|
|
|
return shared;
|
|
};
|
|
|
|
/**
|
|
* @return true if the DS_MAD_CONF has PERSISTENT_ONLY = "YES" flag
|
|
*/
|
|
bool is_persistent_only() const;
|
|
|
|
/**
|
|
* (only relevant for backup datastores)
|
|
* @return true if the DS_MAD_CONF has CONCURRENT_FORGET = "YES" flag
|
|
*/
|
|
bool is_concurrent_forget() const;
|
|
|
|
/**
|
|
* Enable or disable the DS. Only for System DS.
|
|
* @param enable true to enable
|
|
* @param error_str Returns the error reason, if any
|
|
*
|
|
* @return 0 on success
|
|
*/
|
|
int enable(bool enable, std::string& error_str);
|
|
|
|
/**
|
|
* Return a set with compatible system ds for an image ds
|
|
*/
|
|
void get_compatible_system_ds(std::set<int> &compatible_sys_ds) const
|
|
{
|
|
std::string compatible_sys_ds_str;
|
|
|
|
get_template_attribute("COMPATIBLE_SYS_DS", compatible_sys_ds_str);
|
|
|
|
one_util::split_unique(compatible_sys_ds_str, ',', compatible_sys_ds);
|
|
}
|
|
|
|
/**
|
|
* Verify the proper definition of the TM_MAD by checking the attributes
|
|
* related to the TM defined in TM_MAD_CONF
|
|
*/
|
|
int get_tm_mad_targets(const std::string &tm_mad,
|
|
std::string& ln_target,
|
|
std::string& clone_target,
|
|
std::string& disk_type) const;
|
|
/**
|
|
* Returns the default DRIVER to use with images and disks in this DS. The
|
|
* precedence is:
|
|
* 1. TM_MAD_CONF/DRIVER in oned.conf
|
|
* 2. DRIVER in the DS template
|
|
*
|
|
* @param dsid of the datastore
|
|
*
|
|
* @return driver name or "" if not set or missing DS
|
|
*/
|
|
|
|
std::string get_ds_driver();
|
|
|
|
private:
|
|
|
|
// -------------------------------------------------------------------------
|
|
// Friends
|
|
// -------------------------------------------------------------------------
|
|
|
|
friend class DatastorePool;
|
|
|
|
// *************************************************************************
|
|
// Datastore Private Attributes
|
|
// *************************************************************************
|
|
|
|
/**
|
|
* Name of the datastore driver used to register new images
|
|
*/
|
|
std::string ds_mad;
|
|
|
|
/**
|
|
* Name of the TM driver used to transfer file to and from the hosts
|
|
*/
|
|
std::string tm_mad;
|
|
|
|
/**
|
|
* Base path for the storage
|
|
*/
|
|
std::string base_path;
|
|
|
|
/**
|
|
* The datastore type
|
|
*/
|
|
DatastoreType type;
|
|
|
|
/**
|
|
* Disk types for the Images created in this datastore
|
|
*/
|
|
Image::DiskType disk_type;
|
|
|
|
/**
|
|
* Total datastore capacity in MB
|
|
*/
|
|
long long total_mb;
|
|
|
|
/**
|
|
* Available datastore capacity in MB
|
|
*/
|
|
long long free_mb;
|
|
|
|
/**
|
|
* Used datastore capacity in MB
|
|
*/
|
|
long long used_mb;
|
|
|
|
/**
|
|
* Datastore state
|
|
*/
|
|
DatastoreState state;
|
|
|
|
/**
|
|
* Collection of image ids in this datastore
|
|
*/
|
|
ObjectCollection images;
|
|
|
|
// *************************************************************************
|
|
// Constructor
|
|
// *************************************************************************
|
|
|
|
Datastore(
|
|
int uid,
|
|
int gid,
|
|
const std::string& uname,
|
|
const std::string& gname,
|
|
int umask,
|
|
std::unique_ptr<DatastoreTemplate> ds_template,
|
|
const std::set<int> &cluster_ids);
|
|
|
|
/**
|
|
* Sets the DISK_TYPE attribute for the datastore. This function will
|
|
* check the type against the supported DiskTypes for each datastore type
|
|
* (SYSTEM, IMAGE and FILE).
|
|
* @param s_dt DISK_TYPE in string form. If empty Image::FILE will be used
|
|
* @param error description if any. The string is upcased
|
|
*
|
|
* @return -1 if an inconsistent assigment is found
|
|
*
|
|
*/
|
|
int set_ds_disk_type(std::string& s_dt, std::string& error);
|
|
|
|
// *************************************************************************
|
|
// 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 one success
|
|
*/
|
|
int insert_replace(SqlDB *db, bool replace, std::string& error_str);
|
|
|
|
/**
|
|
* Bootstraps the database table(s) associated to the Datastore
|
|
* @return 0 on success
|
|
*/
|
|
static int bootstrap(SqlDB * db);
|
|
|
|
/**
|
|
* Writes the Datastore in the database.
|
|
* @param db pointer to the db
|
|
* @return 0 on success
|
|
*/
|
|
int insert(SqlDB *db, std::string& error_str) override;
|
|
|
|
/**
|
|
* Writes/updates the Datastore's data fields in the database.
|
|
* @param db pointer to the db
|
|
* @return 0 on success
|
|
*/
|
|
int update(SqlDB *db) override
|
|
{
|
|
std::string error_str;
|
|
return insert_replace(db, true, error_str);
|
|
}
|
|
|
|
/**
|
|
* Factory method for datastore templates
|
|
*/
|
|
std::unique_ptr<Template> get_new_template() const override
|
|
{
|
|
return std::make_unique<DatastoreTemplate>();
|
|
}
|
|
|
|
/**
|
|
* Verify the proper definition of the DS_MAD by checking the attributes
|
|
* related to the DS defined in DS_MAD_CONF specified in the Datastore
|
|
* template
|
|
*/
|
|
int set_ds_mad(const std::string &ds_mad, std::string &error_str);
|
|
|
|
/**
|
|
* Verify the proper definition of the TM_MAD by checking the attributes
|
|
* related to the TM defined in TM_MAD_CONF
|
|
*/
|
|
int set_tm_mad(const std::string &tm_mad, std::string &error_str);
|
|
|
|
/**
|
|
* Child classes can process the new template set with replace_template or
|
|
* append_template with this method
|
|
* @param error string describing the error if any
|
|
* @return 0 on success
|
|
* - encrypt secret attributes.
|
|
*/
|
|
int post_update_template(std::string& error) override;
|
|
};
|
|
|
|
#endif /*DATASTORE_H_*/
|