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// Copyright (C) 2012-2018 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#include <config.h>
#include <dhcpsrv/cfgmgr.h>
#include <dhcpsrv/dhcpsrv_log.h>
#include <dhcpsrv/lease_mgr.h>
#include <exceptions/exceptions.h>
#include <stats/stats_mgr.h>
#include <boost/foreach.hpp>
#include <boost/algorithm/string.hpp>
#include <algorithm>
#include <iostream>
#include <iterator>
#include <map>
#include <sstream>
#include <string>
#include <time.h>
using namespace std;
namespace isc {
namespace dhcp {
LeasePageSize::LeasePageSize(const size_t page_size)
: page_size_(page_size) {
if (page_size_ == 0) {
isc_throw(OutOfRange, "page size of retrieved leases must not be 0");
}
if (page_size_ > std::numeric_limits<uint32_t>::max()) {
isc_throw(OutOfRange, "page size of retrieved leases must not be greater than "
<< std::numeric_limits<uint32_t>::max());
}
}
Lease6Ptr
LeaseMgr::getLease6(Lease::Type type, const DUID& duid,
uint32_t iaid, SubnetID subnet_id) const {
Lease6Collection col = getLeases6(type, duid, iaid, subnet_id);
if (col.size() > 1) {
isc_throw(MultipleRecords, "More than one lease found for type "
<< static_cast<int>(type) << ", duid "
<< duid.toText() << ", iaid " << iaid
<< " and subnet-id " << subnet_id);
}
if (col.empty()) {
return (Lease6Ptr());
}
return (*col.begin());
}
void
LeaseMgr::recountLeaseStats4() {
using namespace stats;
StatsMgr& stats_mgr = StatsMgr::instance();
LeaseStatsQueryPtr query = startLeaseStatsQuery4();
if (!query) {
/// NULL means not backend does not support recounting.
return;
}
// Zero out the global stats.
int64_t zero = 0;
stats_mgr.setValue("declined-addresses", zero);
stats_mgr.setValue("reclaimed-declined-addresses", zero);
stats_mgr.setValue("reclaimed-leases", zero);
// Clear subnet level stats. This ensures we don't end up with corner
// cases that leave stale values in place.
const Subnet4Collection* subnets =
CfgMgr::instance().getCurrentCfg()->getCfgSubnets4()->getAll();
for (Subnet4Collection::const_iterator subnet = subnets->begin();
subnet != subnets->end(); ++subnet) {
SubnetID subnet_id = (*subnet)->getID();
stats_mgr.setValue(StatsMgr::generateName("subnet", subnet_id,
"assigned-addresses"),
zero);
stats_mgr.setValue(StatsMgr::generateName("subnet", subnet_id,
"declined-addresses"),
zero);
stats_mgr.setValue(StatsMgr::generateName("subnet", subnet_id,
"reclaimed-declined-addresses"),
zero);
stats_mgr.setValue(StatsMgr::generateName("subnet", subnet_id,
"reclaimed-leases"),
zero);
}
// Get counts per state per subnet. Iterate over the result set
// updating the subnet and global values.
LeaseStatsRow row;
while (query->getNextRow(row)) {
if (row.lease_state_ == Lease::STATE_DEFAULT) {
// Set subnet level value.
stats_mgr.setValue(StatsMgr::generateName("subnet", row.subnet_id_,
"assigned-addresses"),
row.state_count_);
} else if (row.lease_state_ == Lease::STATE_DECLINED) {
// Set subnet level value.
stats_mgr.setValue(StatsMgr::generateName("subnet", row.subnet_id_,
"declined-addresses"),
row.state_count_);
// Add to the global value.
stats_mgr.addValue("declined-addresses", row.state_count_);
}
}
}
LeaseStatsQuery::LeaseStatsQuery()
: first_subnet_id_(0), last_subnet_id_(0), select_mode_(ALL_SUBNETS) {
}
LeaseStatsQuery::LeaseStatsQuery(const SubnetID& subnet_id)
: first_subnet_id_(subnet_id), last_subnet_id_(0),
select_mode_(SINGLE_SUBNET) {
if (first_subnet_id_ == 0) {
isc_throw(BadValue, "LeaseStatsQuery: subnet_id_ must be > 0");
}
}
LeaseStatsQuery::LeaseStatsQuery(const SubnetID& first_subnet_id,
const SubnetID& last_subnet_id)
: first_subnet_id_(first_subnet_id), last_subnet_id_(last_subnet_id),
select_mode_(SUBNET_RANGE) {
if (first_subnet_id_ == 0) {
isc_throw(BadValue, "LeaseStatsQuery: first_subnet_id_ must be > 0");
}
if (last_subnet_id_ == 0) {
isc_throw(BadValue, "LeaseStatsQuery: last_subnet_id_ must be > 0");
}
if (last_subnet_id_ <= first_subnet_id_) {
isc_throw(BadValue,
"LeaseStatsQuery: last_subnet_id_must be > first_subnet_id_");
}
}
LeaseStatsQueryPtr
LeaseMgr::startLeaseStatsQuery4() {
return(LeaseStatsQueryPtr());
}
LeaseStatsQueryPtr
LeaseMgr::startSubnetLeaseStatsQuery4(const SubnetID& /* subnet_id */) {
return(LeaseStatsQueryPtr());
}
LeaseStatsQueryPtr
LeaseMgr::startSubnetRangeLeaseStatsQuery4(const SubnetID& /* first_subnet_id */,
const SubnetID& /* last_subnet_id */) {
return(LeaseStatsQueryPtr());
}
bool
LeaseStatsQuery::getNextRow(LeaseStatsRow& /*row*/) {
return (false);
}
void
LeaseMgr::recountLeaseStats6() {
using namespace stats;
StatsMgr& stats_mgr = StatsMgr::instance();
LeaseStatsQueryPtr query = startLeaseStatsQuery6();
if (!query) {
/// NULL means not backend does not support recounting.
return;
}
// Zero out the global stats. (Ok, so currently there's only one
// that should be cleared. "reclaimed-declined-addresses" never
// gets zeroed. @todo discuss with Tomek the rational of not
// clearing it when we clear the rest.
int64_t zero = 0;
stats_mgr.setValue("declined-addresses", zero);
stats_mgr.setValue("reclaimed-declined-addresses", zero);
stats_mgr.setValue("reclaimed-leases", zero);
// Clear subnet level stats. This ensures we don't end up with corner
// cases that leave stale values in place.
const Subnet6Collection* subnets =
CfgMgr::instance().getCurrentCfg()->getCfgSubnets6()->getAll();
for (Subnet6Collection::const_iterator subnet = subnets->begin();
subnet != subnets->end(); ++subnet) {
SubnetID subnet_id = (*subnet)->getID();
stats_mgr.setValue(StatsMgr::generateName("subnet", subnet_id,
"assigned-nas"),
zero);
stats_mgr.setValue(StatsMgr::generateName("subnet", subnet_id,
"declined-addresses"),
zero);
stats_mgr.setValue(StatsMgr::
generateName("subnet", subnet_id,
"reclaimed-declined-addresses"),
zero);
stats_mgr.setValue(StatsMgr::generateName("subnet", subnet_id,
"assigned-pds"),
zero);
stats_mgr.setValue(StatsMgr::generateName("subnet", subnet_id,
"reclaimed-leases"),
zero);
}
// Get counts per state per subnet. Iterate over the result set
// updating the subnet and global values.
LeaseStatsRow row;
while (query->getNextRow(row)) {
switch(row.lease_type_) {
case Lease::TYPE_NA:
if (row.lease_state_ == Lease::STATE_DEFAULT) {
// Set subnet level value.
stats_mgr.setValue(StatsMgr::
generateName("subnet", row.subnet_id_,
"assigned-nas"),
row.state_count_);
} if (row.lease_state_ == Lease::STATE_DECLINED) {
// Set subnet level value.
stats_mgr.setValue(StatsMgr::
generateName("subnet", row.subnet_id_,
"declined-addresses"),
row.state_count_);
// Add to the global value.
stats_mgr.addValue("declined-addresses", row.state_count_);
}
break;
case Lease::TYPE_PD:
if (row.lease_state_ == Lease::STATE_DEFAULT) {
// Set subnet level value.
stats_mgr.setValue(StatsMgr::
generateName("subnet", row.subnet_id_,
"assigned-pds"),
row.state_count_);
}
break;
default:
// We dont' support TYPE_TAs yet
break;
}
}
}
LeaseStatsQueryPtr
LeaseMgr::startLeaseStatsQuery6() {
return(LeaseStatsQueryPtr());
}
LeaseStatsQueryPtr
LeaseMgr::startSubnetLeaseStatsQuery6(const SubnetID& /* subnet_id */) {
return(LeaseStatsQueryPtr());
}
LeaseStatsQueryPtr
LeaseMgr::startSubnetRangeLeaseStatsQuery6(const SubnetID& /* first_subnet_id */,
const SubnetID& /* last_subnet_id */) {
return(LeaseStatsQueryPtr());
}
std::string
LeaseMgr::getDBVersion() {
isc_throw(NotImplemented, "LeaseMgr::getDBVersion() called");
}
} // namespace isc::dhcp
} // namespace isc
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