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PrlBackup.cpp
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/*
* Copyright (c) 2015-2017, Parallels International GmbH
* Copyright (c) 2017-2019 Virtuozzo International GmbH. All rights reserved.
*
* This file is part of OpenVZ. OpenVZ is free software; you can redistribute
* it and/or modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the License,
* or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
* Our contact details: Virtuozzo International GmbH, Vordergasse 59, 8200
* Schaffhausen, Switzerland.
*/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <memory>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <iostream>
#include <fstream>
#include <boost/property_tree/xml_parser.hpp>
#include <boost/foreach.hpp>
#include <boost/optional.hpp>
#include <PrlApiDisp.h>
#include <prlcommon/Interfaces/VirtuozzoDomModel.h>
#include <prlsdk/PrlDisk.h>
#include "PrlBackup.h"
#include "CmdParam.h"
#include "PrlSrv.h"
#include "Utils.h"
#include "Logger.h"
#include "PrlCleanup.h"
static int backup_event_handler(PRL_HANDLE hEvent, void *data)
{
PrlHandle h(hEvent);
PRL_HANDLE_TYPE type;
int ret;
char *vm_uuid = (char *) data;
if ((ret = PrlHandle_GetType(h.get_handle(), &type))) {
prl_log(L_DEBUG, "PrlHandle_GetType: %s",
get_error_str(ret).c_str());
return ret;
}
if (type == PHT_EVENT) {
PRL_EVENT_TYPE evt_type;
if ((ret = PrlEvent_GetType(h.get_handle(), &evt_type))) {
prl_log(L_DEBUG, "PrlEvent_GetType: %s",
get_error_str(ret).c_str());
return ret;
}
if (vm_uuid != NULL) {
char uuid[256] = "";
unsigned int len;
// get VM uuid
len = sizeof(uuid);
ret = PrlEvent_GetIssuerId(h.get_handle(), uuid, &len);
if (PRL_FAILED(ret)) {
prl_log(L_DEBUG, "PrlEvent_GetIssuerId %s",
get_error_str(ret).c_str());
return ret;
}
if (strcmp(uuid, vm_uuid))
return 0;
}
prl_log(L_DEBUG, "EVENT type=%d", evt_type);
if ( (evt_type == PET_DSP_EVT_BACKUP_PROGRESS_CHANGED) ||
(evt_type == PET_DSP_EVT_RESTORE_PROGRESS_CHANGED))
{
PRL_RESULT ret;
PrlHandle hPrm;
ret = PrlEvent_GetParamByName(hEvent, "progress_changed", hPrm.get_ptr());
if (PRL_FAILED(ret))
return 0;
PRL_UINT32 progress = 0;
PrlEvtPrm_ToUint32(hPrm.get_handle(), &progress);
std::stringstream out;
out << ((evt_type == PET_DSP_EVT_BACKUP_PROGRESS_CHANGED) ? "backup" : "restore")
<< " hdd progress:";
print_procent(progress, out.str());
} else if (evt_type == PET_DSP_EVT_BACKUP_STARTED) {
prl_log(L_INFO, "Backup started.");
} else if (evt_type == PET_DSP_EVT_CREATE_BACKUP_FINISHED) {
prl_log(L_INFO, "Backup finished.");
} else if (evt_type == PET_DSP_EVT_BACKUP_CANCELLED) {
prl_log(L_INFO, "Backup cancelled!");
} else if (evt_type == PET_DSP_EVT_VM_MESSAGE) {
std::string err;
get_result_error_string(hEvent, err);
fprintf(stdout, "%s\n", err.c_str());
} else if (evt_type == PET_DSP_EVT_VM_STATE_CHANGED) {
int s;
PrlHandle hParam;
if (PrlEvent_GetParamByName(hEvent, EVT_PARAM_VMINFO_VM_STATE, hParam.get_ptr()) == 0 &&
PrlEvtPrm_ToInt32(hParam, &s) == 0)
fprintf(stdout, "Vm state changed to %s\n", vmstate2str((VIRTUAL_MACHINE_STATE)s));
}
}
return 0;
}
int PrlSrv::do_vm_backup(const PrlVm& vm, const CmdParamData ¶m,
const PrlSrv &storage)
{
PRL_RESULT ret;
const BackupParam& bparam = param.backup;
const char *sessionid = "";
const char *server = "";
int port = 0;
unsigned int security_level;
char vm_uuid[256];
security_level = get_min_security_level();
if (!bparam.storage.server.empty()) {
sessionid = storage.get_sessionid();
port = bparam.storage.port;
server = bparam.storage.server.c_str();
if (security_level < storage.get_min_security_level())
security_level = storage.get_min_security_level();
}
if (security_level < param.security_level)
security_level = param.security_level;
PRL_BACKUP_PARAM extra = { 0 };
extra.backup_directory = bparam.path.c_str();
prl_log(L_DEBUG, "security_level=%d", security_level);
prl_log(0, "Backing up the %s %s",
vm.get_vm_type_str(), vm.get_name().c_str());
PRL_HANDLE hBackup;
hBackup = PrlSrv_CreateVmBackupEx(
m_hSrv,
vm.get_id().c_str(),
server,
port,
sessionid,
param.desc ? param.desc.get().c_str() : "",
bparam.flags | security_level,
0,
PRL_TRUE,
&extra);
snprintf(vm_uuid, sizeof(vm_uuid), "%s", vm.get_id().c_str());
reg_event_callback(backup_event_handler, vm_uuid);
const PrlHook *h = get_cleanup_ctx().register_hook(cancel_job, hBackup);
std::string err;
if ((ret = get_job_retcode(hBackup, err))) {
handle_job_err(hBackup, ret);
prl_err(ret, "Failed to backup the %s: %s",
vm.get_vm_type_str(), err.c_str());
} else {
PrlHandle hResult;
PRL_UINT32 count = 0;
int rc;
std::string backup_id;
if ((rc = PrlJob_GetResult(hBackup, hResult.get_ptr())) == 0 &&
(rc = PrlResult_GetParamsCount(hResult.get_handle(), &count)) == 0)
{
prl_log(L_DEBUG, "resultCount: %d", count);
/*
* 1 - vm_id
* 2 - backup_id
*/
if (count >= 2) {
PrlHandle phParam;
rc = PrlResult_GetParamByIndex(hResult.get_handle(), 1, phParam.get_ptr());
if (rc == 0) {
char buf[128];
PRL_UINT32 len = sizeof(buf);
rc = PrlBackupResult_GetBackupUuid(phParam.get_handle(), buf, &len);
if (rc == 0)
backup_id = buf;
}
}
}
prl_log(0, "The %s has been successfully backed up with backup id %s.",
vm.get_vm_type_str(), backup_id.c_str());
}
get_cleanup_ctx().unregister_hook(h);
PrlHandle_Free(hBackup);
unreg_event_callback(backup_event_handler, vm_uuid);
return ret;
}
struct cbt_bitmap
{
typedef unsigned long bmap_t;
cbt_bitmap(PRL_HANDLE h) : hMap(h), map(NULL)
{}
~cbt_bitmap()
{
release();
}
bmap_t *alloc()
{
PRL_RESULT e;
e = PrlDiskMap_GetGranularity(hMap, &gran);
if (PRL_FAILED(e)) {
prl_log(e, "%s: failed to GetGranularity: %s",
__FUNCTION__, get_error_str(e).c_str());
return NULL;
}
e = PrlDiskMap_GetSize(hMap, &bits);
if (PRL_FAILED(e)) {
prl_log(e, "%s: failed to PrlDiskMap_GetSize: %s",
__FUNCTION__, get_error_str(e).c_str());
return NULL;
}
bytes = (bits + 7) / 8;
map = (unsigned long *)malloc(bytes);
if (map == NULL)
prl_err(-1, "ENOMEM");
return map;
}
int read()
{
if (map)
release();
if (alloc() == NULL)
return -1;
unsigned int bmap_size = bytes;
PRL_RESULT e = PrlDiskMap_Read(hMap, (void *)map, &bmap_size);
if (PRL_FAILED(e)) {
prl_log(e, "%s: failed to read CBT bitmap: %s",
__FUNCTION__, get_error_str(e).c_str());
return -1;
}
return 0;
}
void release()
{
bsize = 0;
gran = 0;
free(map);
map = NULL;
}
int save(const std::string &fname) const
{
int rc = 0, fd;
fd = open(fname.c_str(), O_WRONLY|O_CREAT|O_TRUNC, 0600);
if (fd == -1) {
prl_err(-1, "Cannot open %s: %m", fname.c_str());
return -1;
}
prl_log(0, "\tsave CBT %s size %lu", fname.c_str(), bytes);
ssize_t n = TEMP_FAILURE_RETRY(write(fd, map, bytes));
if (n == -1) {
prl_err(-1, "Cannot write %s: %m", fname.c_str());
rc = -1;
} else if (n != (ssize_t)bytes) {
prl_err(-1, "Write %s truncated", fname.c_str());
rc = -1;
}
close(fd);
return rc;
}
PRL_HANDLE hMap;
unsigned long bsize; /* bitmap block size */
unsigned int gran; /* block size */
unsigned int bits; /* size of bitmap in bits */
unsigned long bytes;
bmap_t *map;
};
static cbt_bitmap *get_cbt_bitmap(PRL_HANDLE hDisk, const char *uuid)
{
PrlHandle hMap;
PRL_RESULT e;
prl_log(1, "\t get CBT by uuid %s", uuid);
e = PrlDisk_GetChangesMap_Local(hDisk, uuid, NULL, hMap.get_ptr());
if (PRL_FAILED(e)) {
prl_log(e, "%s: failed to GetChangesMap_Local for uuid %s: %s",
__FUNCTION__, uuid, get_error_str(e).c_str());
return NULL;
}
cbt_bitmap *bmap = new cbt_bitmap(hMap);
if (bmap->read()) {
delete bmap;
return NULL;
}
return bmap;
}
// Get a bit of a bitmap
static __inline int BMAP_GET(void const* bmap, unsigned int bit)
{
return !!(((unsigned int const*)bmap)[bit >> 5] & (1 << (bit & 31)));
}
static int is_zero_block(void *buf, unsigned long size)
{
return *(unsigned long *)buf == 0 &&
!memcmp(buf, (char *)buf + sizeof(unsigned long), size - sizeof(unsigned long));
}
static int store(PRL_HANDLE hDisk, int id, const cbt_bitmap *bmap, const std::string &dir)
{
int ff, fd, rc;
void *buf;
std::stringstream s;
s << dir << "/" << id;
std::string f = s.str() + ".full";
std::string d = s.str() + ".delta";
std::string c = s.str() + ".cbt";
prl_log(0, "process disk %d size: %lu", id, bmap->bsize);
rc = bmap->save(c);
if (rc)
return -1;
prl_log(0, "\tsave backup %s blocks: %lu gran: %lu", f.c_str(),
bmap->bits, bmap->gran);
ff = open(f.c_str(), O_WRONLY|O_CREAT|O_TRUNC, 0600);
if (ff == -1) {
prl_log(-1, "Cannot open %s", f.c_str());
return -1;
}
fd = open(d.c_str(), O_WRONLY|O_CREAT|O_TRUNC, 0600);
if (fd == -1) {
prl_log(-1, "Cannot open %s", d.c_str());
close(ff);
return -1;
}
buf = aligned_alloc(4096, bmap->gran);
if (buf == NULL) {
close(ff);
close(fd);
return -1;
}
// Make the same size
bzero(buf, bmap->gran);
TEMP_FAILURE_RETRY(pwrite(ff, buf, bmap->gran, (off_t)bmap->bits * bmap->gran - bmap->gran));
TEMP_FAILURE_RETRY(pwrite(fd, buf, bmap->gran, (off_t)bmap->bits * bmap->gran - bmap->gran));
for (unsigned long n = 0; n < bmap->bits; n++) {
rc = PrlDisk_Read(hDisk, buf, bmap->gran, n * bmap->gran / 512);
if (rc) {
prl_err(rc, "PrlVmBackup_GetDisk: %s",
get_error_str(rc).c_str());
break;
}
if (BMAP_GET(bmap->map, n)) {
//prl_log(0, "Bit %d", n);
ssize_t w = TEMP_FAILURE_RETRY(pwrite(fd, buf, bmap->gran, n * bmap->gran));
if (w != bmap->gran) {
prl_err(-1, "pwrite %s: %m", d.c_str());
rc = -1;
break;
}
}
if (is_zero_block(buf, bmap->gran))
continue;
// prl_log(0, "Block %d", n);
ssize_t w = TEMP_FAILURE_RETRY(pwrite(ff, buf, bmap->gran, n * bmap->gran));
if (w != bmap->gran) {
prl_err(-1, "pwrite %s: %m", f.c_str());
rc = -1;
break;
}
}
free(buf);
close(ff);
close(fd);
return rc;
}
/* Example of using PrlVm_BeginBackup()/PrlVmBackup_Commit() */
int PrlSrv::do_vm_abackup(const PrlVm& vm, const BackupParam& param)
{
PRL_RESULT ret, r;
PRL_UINT32 n;
std::string err;
PrlHandle hResult;
PrlHandle j(PrlVm_BeginBackup(vm.get_handle(), PBMBF_CREATE_MAP));
if ((ret = get_job_result(j, hResult.get_ptr(), &n))) {
prl_err(ret, "Failed to begin backup %s",
err.c_str());
return ret;
}
PrlHandle hBackup;
ret = PrlResult_GetParam(hResult, hBackup.get_ptr());
if (ret) {
prl_err(ret, "Failed to get backup disk count: %s",
get_error_str(ret).c_str());
return ret;
}
ret = PrlVmBackup_GetDisksCount(hBackup, &n);
if (ret) {
prl_err(ret, "Failed to get backup disk count: %s",
get_error_str(ret).c_str());
return ret;
}
prl_log(0, "Disk count %d", n);
for (unsigned int i = 0; i < n; i++) {
int rc;
PrlHandle hDisk;
ret = -1;
rc = PrlVmBackup_GetDisk(hBackup, i, hDisk.get_ptr());
if (rc) {
prl_err(ret, "PrlVmBackup_GetDisk: %s",
get_error_str(rc).c_str());
break;
}
std::unique_ptr<cbt_bitmap> bmap(get_cbt_bitmap(hDisk.get_handle(),
param.flags == PBT_FULL ? NULL : param.uuid.c_str()));
if (bmap.get() == NULL)
break;
rc = store(hDisk, i, bmap.get(), param.path);
if (rc)
break;
ret = 0;
}
PrlHandle c(ret ? PrlVmBackup_Rollback(hBackup) : PrlVmBackup_Commit(hBackup));
if ((r = get_job_retcode(c, err))) {
prl_err(ret, "Failed to backup %s %s: %s",
ret ? "PrlVmBackup_Rollback" : "PrlVmBackup_Commit",
vm.get_vm_type_str(), err.c_str());
}
if (ret == 0) {
char uuid[64] = "";
unsigned int len = sizeof(uuid);
ret = PrlVmBackup_GetUuid(hBackup, uuid, &len);
if (ret) {
prl_err(ret, "Failed to get backup uuid: %s",
get_error_str(ret).c_str());
return ret;
}
std::string f = param.path + "/uuid";
std::ofstream out(f.c_str());
out << uuid;
out.close();
prl_log(0, "Backup created uuid: %s", uuid);
}
return ret;
}
int PrlSrv::backup_vm(const CmdParamData& param)
{
PrlVm *v = NULL;
PRL_RESULT ret = get_vm_config(param, &v);
if (PRL_FAILED(ret))
return ret;
if (v == NULL)
{
return prl_err(-1, "The virtual machine %s does not exist.",
param.id.c_str());
}
std::unique_ptr<PrlVm> vm(v);
PrlSrv storage;
if (!param.backup.storage.server.empty() &&
(ret = storage.login(param.backup.storage)))
return ret;
return param.backup.abackup ? do_vm_abackup(*vm, param.backup) : do_vm_backup(*vm, param, storage);
}
int PrlSrv::backup_node(const CmdParamData& param)
{
int ret;
if ((ret = update_vm_list(param.vmtype, 0)))
return ret;
PrlSrv storage;
if (!param.backup.storage.server.empty() &&
(ret = storage.login(param.backup.storage)))
return ret;
for (PrlVmList::const_iterator i = m_VmList.begin();
i != m_VmList.end(); ++i)
{
std::string u = (*i)->get_uuid();
PrlVm *v = NULL;
ret = get_vm_config(u, &v);
if (PRL_FAILED(ret))
{
if (ret != PRL_ERR_VM_UUID_NOT_FOUND)
prl_log(0, "Failed to get config of VM %s", u.c_str());
continue;
}
std::unique_ptr<PrlVm> vm(v);
CmdParamData p(param);
p.id = u;
ret = do_vm_backup(*vm, p, storage);
if (ret == PRL_ERR_OPERATION_WAS_CANCELED)
return ret;
}
return 0;
}
int PrlSrv::restore_vm(const CmdParamData ¶m)
{
PRL_RESULT ret = PRL_ERR_UNINITIALIZED;
const BackupParam& bparam = param.backup;
const char *sessionid = "";
const char *server = "";
int port = 0;
unsigned int security_level, flags;
PrlSrv storage;
std::string vm_id = param.id;
const char *type = "VM";
flags = bparam.flags;
security_level = get_min_security_level();
if (!bparam.storage.server.empty()) {
if ((ret = storage.login(bparam.storage)))
return ret;
sessionid = storage.get_sessionid();
port = bparam.storage.port;
server = bparam.storage.server.c_str();
if (security_level < storage.get_min_security_level())
security_level = storage.get_min_security_level();
}
if (security_level < param.security_level)
security_level = param.security_level;
prl_log(L_DEBUG, "security_level=%d", security_level);
if (!param.id.empty()) {
PrlVm *vm = NULL;
ret = get_vm_config(param, &vm, is_uuid(param.id));
if (ret != 0)
return ret;
if (vm != NULL) {
vm_id = vm->get_uuid();
type = vm->get_vm_type_str();
delete vm;
}
prl_log(0, "Restore the %s %s", type, vm_id.c_str());
} else if (!bparam.id.empty()) {
PrlBackupTree tree;
ret = get_backup_tree(param, tree, storage);
if (ret == 0)
vm_id = tree.get_vm_uuid_by_id(bparam.id);
prl_log(0, "Restore the backup id=%s, virtual environment id=%s",
bparam.id.c_str(), vm_id.c_str());
} else
return prl_err(1, "VM ID is not specified.");
if (!bparam.name.empty())
flags |= PBT_RESTORE_TO_COPY;
PRL_BACKUP_PARAM extra = { 0 };
extra.backup_directory = bparam.path.c_str();
PRL_HANDLE hRestore;
hRestore = PrlSrv_RestoreVmBackupEx(
m_hSrv,
vm_id.c_str(),
bparam.id.c_str(),
server,
port,
sessionid,
bparam.vm_location.c_str(),
bparam.name.c_str(),
flags | security_level,
0,
false,
&extra);
reg_event_callback(backup_event_handler, (void *) vm_id.c_str());
const PrlHook *h = get_cleanup_ctx().register_hook(cancel_job, hRestore);
std::string err;
if ((ret = get_job_retcode(hRestore, err))) {
handle_job_err(hRestore, ret);
prl_err(ret, "Failed to restore the %s: %s",
type, err.c_str());
} else {
prl_log(0, "The %s has been restored.", type);
}
unreg_event_callback(backup_event_handler);
get_cleanup_ctx().unregister_hook(h);
return ret;
}
int PrlSrv::backup_delete(const CmdParamData ¶m)
{
PRL_RESULT ret = PRL_ERR_UNINITIALIZED;
const BackupParam& bparam = param.backup;
const char *sessionid = "";
const char *server = "";
int port = 0;
unsigned int security_level;
PrlSrv storage;
std::string vm_id = param.id;
const char *type = "";
security_level = get_min_security_level();
if (!bparam.storage.server.empty()) {
if ((ret = storage.login(bparam.storage)))
return ret;
sessionid = storage.get_sessionid();
port = bparam.storage.port;
server = bparam.storage.server.c_str();
if (security_level < storage.get_min_security_level())
security_level = storage.get_min_security_level();
}
if (security_level < param.security_level)
security_level = param.security_level;
prl_log(L_DEBUG, "security_level=%d", security_level);
if (!param.id.empty()) {
PrlVm *vm = NULL;
ret = get_vm_config(param, &vm, is_uuid(param.id));
if (ret)
return ret;
if (vm != NULL) {
vm_id = vm->get_uuid();
type = vm->get_vm_type_str();
delete vm;
}
prl_log(0, "Delete the %s backup", type);
} else if (!bparam.id.empty()) {
type = bparam.id.c_str();
prl_log(0, "Delete the backup %s", bparam.id.c_str());
} else
return prl_err(1, "VM ID is not specified.");
PRL_BACKUP_PARAM extra = { 0 };
extra.backup_directory = bparam.path.c_str();
PRL_HANDLE hRemove;
hRemove = PrlSrv_RemoveVmBackupEx(
m_hSrv,
vm_id.c_str(),
bparam.id.c_str(),
server,
port,
sessionid,
bparam.flags | security_level,
0,
PRL_TRUE,
&extra);
reg_event_callback(backup_event_handler, (void *) vm_id.c_str());
const PrlHook *h = get_cleanup_ctx().register_hook(cancel_job, hRemove);
std::string err;
if ((ret = get_job_retcode(hRemove, err))) {
handle_job_err(hRemove, ret);
prl_err(ret, "Failed to delete the backup: %s", err.c_str());
} else {
prl_log(0, "The %s backup have been successfully removed.",
type);
}
unreg_event_callback(backup_event_handler);
get_cleanup_ctx().unregister_hook(h);
return ret;
}
int PrlSrv::backup_list(const CmdParamData ¶m)
{
int ret;
const BackupParam& bparam = param.backup;
PrlBackupTree tree;
PrlSrv storage;
if (!bparam.storage.server.empty()) {
if ((ret = storage.login(bparam.storage)))
return ret;
}
ret = get_backup_tree(param, tree, storage);
if (ret)
return ret;
if (param.backup.list_local_vm)
update_vm_list(param.vmtype);
tree.print_list(param.backup, param.list_no_hdr, *this);
return 0;
}
int PrlSrv::do_get_backup_tree(const std::string& id,
const std::string& server,
int port,
const std::string& dir,
const std::string& session_id,
unsigned int flags,
PrlBackupTree &tree)
{
PRL_BACKUP_PARAM extra = { 0 };
extra.backup_directory = dir.c_str();
PrlHandle hJob(PrlSrv_GetBackupTreeEx(
m_hSrv,
id.c_str(),
server.c_str(),
port,
session_id.c_str(),
flags,
0,
true,
&extra));
const PrlHook *h = get_cleanup_ctx().register_hook(cancel_job, hJob.get_handle());
PRL_RESULT ret;
PRL_UINT32 resultCount;
PrlHandle hResult;
if ((ret = get_job_result(hJob.get_handle(), hResult.get_ptr(), &resultCount)))
return prl_err(-1, "Failed to get the backup tree: %s",
get_error_str(ret).c_str());
get_cleanup_ctx().unregister_hook(h);
std::string out;
if ((ret = get_result_as_string(hResult.get_handle(), out)))
return ret;
prl_log(L_DEBUG, "\n%s\n", out.c_str());
tree.parse(out.c_str());
return ret;
}
int PrlSrv::get_backup_tree(const CmdParamData ¶m, PrlBackupTree &tree, PrlSrv &storage)
{
PRL_RESULT ret;
const BackupParam& bparam = param.backup;
std::string sessionid;
std::string server;
int port = 0;
unsigned int flags = bparam.flags;
unsigned int security_level;
security_level = get_min_security_level();
if (!bparam.storage.server.empty()) {
sessionid = storage.get_sessionid();
port = bparam.storage.port;
server = bparam.storage.server;
if (security_level < storage.get_min_security_level())
security_level = storage.get_min_security_level();
}
if (security_level < param.security_level)
security_level = param.security_level;
prl_log(L_DEBUG, "security_level=%d", security_level);
std::string id = param.id;
if (!id.empty()) {
PrlVm *vm = NULL;
ret = get_vm_config(param, &vm, is_uuid(id));
if (ret != 0)
return ret;
if (vm != NULL)
{
id = vm->get_uuid();
delete vm;
}
prl_log(L_DEBUG, "filter: %s", id.c_str());
}
else if(!bparam.id.empty()){
if(std::string::npos == bparam.id.find("."))
flags |= PBT_BACKUP_ID;
else
flags |= PBT_CHAIN;
id = bparam.id;
}
flags |= security_level;
if (param.vmtype & PVTF_VM)
flags |= PBT_VM;
if (param.vmtype & PVTF_CT)
flags |= PBT_CT;
return do_get_backup_tree(id, server, port, bparam.path, sessionid, flags, tree);
}
int PrlSrv::get_backup_disks(const std::string& id, std::list<std::string>& disks)
{
PrlBackupTree tree;
/* XXX: using the localhost, since we cannot handle backups located on a remote server yet */
int ret = do_get_backup_tree(id, "", 0, "", get_sessionid(), PBT_VM | PBT_CT | PBT_BACKUP_ID, tree);
if (ret)
return ret;
ret = tree.get_disks_by_id(id, disks);
if (ret)
return prl_err(-1, "Backup '%s' was not found on localhost.\n"
"Please note that only local backups can be attached.", id.c_str());
return 0;
}
void PrlBackupTree::parse_disk(const tree_type& disk_, BackupDisk &disk)
{
boost::optional<std::string> val;
if ((val = disk_.get_optional<std::string>("Name")))
disk.name = *val;
if ((val = disk_.get_optional<std::string>("OriginalPath")))
disk.orig_path = *val;
if ((val = disk_.get_optional<std::string>("Size")))
disk.size = *val;
}
void PrlBackupTree::parse_disk_list(const tree_type& disks_, BackupDiskList &list)
{
BOOST_FOREACH(const tree_type::value_type& it, disks_) {
if (it.first != "BackupDisk")
continue;
BackupDisk disk;
parse_disk(it.second, disk);
list.push_back(disk);
}
}
void PrlBackupTree::parse_data(const tree_type& item_, BackupData &backup)
{
BOOST_FOREACH(const tree_type::value_type& it, item_) {
if (it.first == "Id")
backup.uuid = it.second.get_value<std::string>();
else if (it.first == "Host")
backup.host = it.second.get_value<std::string>();
else if (it.first == "Creator")
backup.owner = it.second.get_value<std::string>();
else if (it.first == "DateTime")
backup.date = it.second.get_value<std::string>();
else if (it.first == "Size")
backup.size = it.second.get_value<std::string>();
else if (it.first == "Type")
backup.type = it.second.get_value<std::string>();
else if (it.first == "Description")
backup.desc = it.second.get_value<std::string>();
else if (it.first == "ServerUuid")
backup.srv_uuid = it.second.get_value<std::string>();
else if (it.first == "BackupDisks")
parse_disk_list(it.second, backup.lst_disks);
}
}
VmBackupData *PrlBackupTree::parse_entry(const tree_type& entry_)
{
VmBackupData *vm_backup = new VmBackupData();
BOOST_FOREACH(const tree_type::value_type& it, entry_) {
if (it.first == "Uuid")
vm_backup->uuid = it.second.get_value<std::string>();
else if (it.first == "Name")
vm_backup->name = it.second.get_value<std::string>();
else if (it.first == "BackupItem") {
FullBackup full_backup;
parse_data(it.second, full_backup.data);
BOOST_FOREACH(const tree_type::value_type& pit, it.second) {
if (pit.first != "PartialBackupItem")
continue;
BackupData partial_backup;
parse_data(pit.second, partial_backup);
full_backup.lst_backups.push_back(partial_backup);
}
vm_backup->lst_backups.push_back(full_backup);
}
}
return vm_backup;
}
int PrlBackupTree::parse(const char *str)
{
std::istringstream is(str);
tree_type t;
try {
boost::property_tree::xml_parser::read_xml(is, t);
} catch (const boost::property_tree::xml_parser::xml_parser_error&) {
return 0;
}
boost::optional<tree_type& > v = t.get_child_optional("BackupTree");
if (!v)
return 0;
BOOST_FOREACH(const tree_type::value_type& it, (*v)) {
if (it.first != "VmItem")
continue;
VmBackupData *vm_backup = parse_entry(it.second);
if (vm_backup != NULL)
m_tree.push_back(vm_backup);
}
return 0;
}
#define LIST_STD_FMT "%38s %-38s %-20s %-20s %4s %10s\n"
void PrlBackupTree::print_list(const BackupParam ¶m, bool no_hdr, PrlSrv &srv)
{
if (!param.list_full && !no_hdr)
printf(LIST_STD_FMT, "ID", "Backup_ID", "Node", "Date", "Type", "Size");
for (VmBackupDataList::const_iterator it = m_tree.begin(), eit = m_tree.end(); it != eit; ++it)
{
(*it)->print_data(param, srv);
}
}
const BackupData *PrlBackupTree::find_backup_data(const std::string &id,
std::string &vmid) const
{
for (VmBackupDataList::const_iterator it = m_tree.begin(), eit = m_tree.end(); it != eit; ++it)
{
vmid = (*it)->uuid;
/* For each full backup */
for (FullBackupList::const_iterator it_full = (*it)->lst_backups.begin(),
eit_full = (*it)->lst_backups.end();
it_full != eit_full; ++it_full)
{
if (it_full->data.uuid == id)
return &it_full->data;
/* for each Inc backup */
for (BackupList::const_iterator it_inc = it_full->lst_backups.begin(),
eit_inc = it_full->lst_backups.end();
it_inc != eit_inc; ++it_inc)
{
if (it_inc->uuid == id)
return &(*it_inc);
}
}
}
return NULL;
}
std::string PrlBackupTree::get_vm_uuid_by_id(const std::string &id) const
{
std::string vmid;
if (find_backup_data(id, vmid) != NULL)
return vmid;
return std::string();
}
int PrlBackupTree::get_disks_by_id(const std::string& id, std::list<std::string>& disks) const
{
std::string vmid;
const BackupData *backup = find_backup_data(id, vmid);
if (!backup)