mirror of
https://github.com/OpenNebula/one.git
synced 2024-12-29 11:21:30 +03:00
310 lines
9.2 KiB
C++
310 lines
9.2 KiB
C++
/* ------------------------------------------------------------------------ */
|
|
/* Copyright 2002-2015, OpenNebula Project (OpenNebula.org), C12G Labs */
|
|
/* */
|
|
/* 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 HOST_SHARE_H_
|
|
#define HOST_SHARE_H_
|
|
|
|
#include "ObjectXML.h"
|
|
#include "Template.h"
|
|
#include <time.h>
|
|
#include <set>
|
|
|
|
/* ------------------------------------------------------------------------ */
|
|
/* ------------------------------------------------------------------------ */
|
|
|
|
class HostShareDatastore : public Template
|
|
{
|
|
public:
|
|
HostShareDatastore() : Template(false, '=', "DATASTORES"){};
|
|
|
|
virtual ~HostShareDatastore(){};
|
|
};
|
|
|
|
/**
|
|
* This class represents a PCI DEVICE list for the host. The list is in the
|
|
* form:
|
|
* <PCI>
|
|
* <DOMAIN> PCI address domain
|
|
* <BUS> PCI address bus
|
|
* <SLOT> PCI address slot
|
|
* <FUNCTION> PCI address function
|
|
* <ADDRESS> PCI address, bus, slot and function
|
|
* <VENDOR> ID of PCI device vendor
|
|
* <DEVICE> ID of PCI device
|
|
* <CLASS> ID of PCI device class
|
|
* <VMID> ID using this device, -1 if free
|
|
*
|
|
* The monitor probe may report additional information such as VENDOR_NAME,
|
|
* DEVICE_NAME, CLASS_NAME...
|
|
*/
|
|
class HostSharePCI : public Template
|
|
{
|
|
public:
|
|
|
|
HostSharePCI() : Template(false, '=', "PCI_DEVICES"){};
|
|
|
|
virtual ~HostSharePCI()
|
|
{
|
|
map<string, PCIDevice *>::iterator it;
|
|
|
|
for (it=pci_devices.begin(); it != pci_devices.end(); it++)
|
|
{
|
|
delete it->second;
|
|
};
|
|
};
|
|
|
|
/**
|
|
* Builds the devices list from its XML representation. This function
|
|
* is used when importing it from the DB.
|
|
* @param node xmlNode for the template
|
|
* @return 0 on success
|
|
*/
|
|
int from_xml_node(const xmlNodePtr node);
|
|
|
|
/**
|
|
* Test whether this PCI device set has the requested devices available.
|
|
* @param devs list of requested devices by the VM.
|
|
* @return true if all the devices are available.
|
|
*/
|
|
bool test(const vector<Attribute *> &devs) const;
|
|
|
|
/**
|
|
* Assign the requested devices to the given VM. The assigned devices will
|
|
* be labeled with the VM and the PCI attribute of the VM extended with
|
|
* the address of the assigned devices.
|
|
* @param devs list of requested PCI devices, will include address of
|
|
* assigned devices.
|
|
* @param vmid of the VM
|
|
*/
|
|
void add(vector<Attribute *> &devs, int vmid);
|
|
|
|
/**
|
|
* Remove the VM assignment from the PCI device list
|
|
*/
|
|
void del(const vector<Attribute *> &devs);
|
|
|
|
/**
|
|
* Updates the PCI list with monitor data, it will create or
|
|
* remove PCIDevices as needed.
|
|
*/
|
|
void set_monitorization(vector<Attribute*> &pci_att);
|
|
|
|
/**
|
|
* Prints the PCI device list to an output stream. This function is used
|
|
* for logging purposes and *not* for generating DB content.
|
|
*/
|
|
friend ostream& operator<<(ostream& o, const HostSharePCI& p);
|
|
|
|
private:
|
|
/**
|
|
* Sets the internal class structures from the template
|
|
*/
|
|
int init();
|
|
|
|
/**
|
|
* Gets a 4 hex digits value from attribute
|
|
* @param name of the attribute
|
|
* @pci_device VectorAttribute representing the device
|
|
* @return the value as unsigned int or 0 if was not found
|
|
*/
|
|
static unsigned int get_pci_value(const char * name,
|
|
const VectorAttribute * pci_device);
|
|
/**
|
|
* Internal structure to represent PCI devices for fast look up and
|
|
* update
|
|
*/
|
|
struct PCIDevice
|
|
{
|
|
PCIDevice(VectorAttribute * _attrs);
|
|
|
|
~PCIDevice(){};
|
|
|
|
unsigned int vendor_id;
|
|
unsigned int device_id;
|
|
unsigned int class_id;
|
|
|
|
int vmid;
|
|
|
|
string address;
|
|
|
|
VectorAttribute * attrs;
|
|
};
|
|
|
|
map <string, PCIDevice *> pci_devices;
|
|
};
|
|
|
|
/**
|
|
* The HostShare class. It represents a logical partition of a host...
|
|
*/
|
|
class HostShare : public ObjectXML
|
|
{
|
|
public:
|
|
|
|
HostShare(
|
|
long long _max_disk=0,
|
|
long long _max_mem=0,
|
|
long long _max_cpu=0);
|
|
|
|
~HostShare(){};
|
|
|
|
/**
|
|
* Add a new VM to this share
|
|
* @param vmid of the VM
|
|
* @param cpu requested by the VM, in percentage
|
|
* @param mem requested by the VM, in KB
|
|
* @param disk requested by the VM
|
|
* @param pci_devs requested by the VM
|
|
*/
|
|
void add(int vmid, long long cpu, long long mem, long long disk,
|
|
vector<Attribute *> pci_devs)
|
|
{
|
|
cpu_usage += cpu;
|
|
mem_usage += mem;
|
|
disk_usage += disk;
|
|
|
|
pci.add(pci_devs, vmid);
|
|
|
|
running_vms++;
|
|
}
|
|
|
|
/**
|
|
* Updates the capacity of VM in this share
|
|
* @param cpu increment
|
|
* @param mem increment
|
|
* @param disk increment
|
|
*/
|
|
void update(int cpu, int mem, int disk)
|
|
{
|
|
cpu_usage += cpu;
|
|
mem_usage += mem;
|
|
disk_usage += disk;
|
|
}
|
|
|
|
/**
|
|
* Delete a VM from this share
|
|
* @param cpu requested by the VM
|
|
* @param mem requested by the VM
|
|
* @param disk requested by the VM
|
|
* @param pci_devs requested by the VM
|
|
*/
|
|
void del(long long cpu, long long mem, long long disk, vector<Attribute *> pci_devs)
|
|
{
|
|
cpu_usage -= cpu;
|
|
mem_usage -= mem;
|
|
disk_usage -= disk;
|
|
|
|
pci.del(pci_devs);
|
|
|
|
running_vms--;
|
|
}
|
|
|
|
/**
|
|
* Check if this share can host a VM.
|
|
* @param cpu requested by the VM
|
|
* @param mem requested by the VM
|
|
* @param disk requested by the VM
|
|
* @param pci_devs requested by the VM
|
|
* @param error Returns the error reason, if any
|
|
*
|
|
* @return true if the share can host the VM or it is the only one
|
|
* configured
|
|
*/
|
|
bool test(long long cpu, long long mem, long long disk,
|
|
vector<Attribute *>& pci_devs, string& error) const
|
|
{
|
|
bool pci_fits = pci.test(pci_devs);
|
|
|
|
bool fits = (((max_cpu - cpu_usage ) >= cpu) &&
|
|
((max_mem - mem_usage ) >= mem) &&
|
|
((max_disk - disk_usage) >= disk)&&
|
|
pci_fits);
|
|
|
|
if (!fits)
|
|
{
|
|
if ( pci_fits )
|
|
{
|
|
error = "Not enough capacity.";
|
|
}
|
|
else
|
|
{
|
|
error = "Unavailable PCI device.";
|
|
}
|
|
}
|
|
|
|
return fits;
|
|
}
|
|
|
|
/**
|
|
* Function to write a HostShare to an output stream
|
|
*/
|
|
friend ostream& operator<<(ostream& os, HostShare& hs);
|
|
|
|
/**
|
|
* Function to print the HostShare 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;
|
|
|
|
void set_ds_monitorization(const vector<Attribute*> &ds_att);
|
|
|
|
void set_pci_monitorization(vector<Attribute*> &pci_att)
|
|
{
|
|
pci.set_monitorization(pci_att);
|
|
}
|
|
|
|
private:
|
|
|
|
long long disk_usage; /**< Disk allocated to VMs (in MB). */
|
|
long long mem_usage; /**< Memory allocated to VMs (in KB) */
|
|
long long cpu_usage; /**< CPU allocated to VMs (in percentage) */
|
|
|
|
long long max_disk; /**< Total disk capacity (in MB) */
|
|
long long max_mem; /**< Total memory capacity (in KB) */
|
|
long long max_cpu; /**< Total cpu capacity (in percentage) */
|
|
|
|
long long free_disk; /**< Free disk from the IM monitor */
|
|
long long free_mem; /**< Free memory from the IM monitor */
|
|
long long free_cpu; /**< Free cpu from the IM monitor */
|
|
|
|
long long used_disk; /**< Used disk from the IM monitor */
|
|
long long used_mem; /**< Used memory from the IM monitor */
|
|
long long used_cpu; /**< Used cpu from the IM monitor */
|
|
|
|
long long running_vms;/**< Number of running VMs in this Host */
|
|
|
|
HostShareDatastore ds;
|
|
HostSharePCI pci;
|
|
|
|
// ----------------------------------------
|
|
// Friends
|
|
// ----------------------------------------
|
|
|
|
friend class Host;
|
|
friend class HostPool;
|
|
|
|
/**
|
|
* Rebuilds the object from an xml node
|
|
* @param node The xml node pointer
|
|
*
|
|
* @return 0 on success, -1 otherwise
|
|
*/
|
|
int from_xml_node(const xmlNodePtr node);
|
|
};
|
|
|
|
#endif /*HOST_SHARE_H_*/
|