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/*
* Copyright (c) 2017 Cisco and/or its affiliates.
* 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.
*/
#include <algorithm>
#include "vom/logger.hpp"
#include "vom/om.hpp"
namespace VOM {
client_db* OM::m_db;
std::unique_ptr<OM::listener_list> OM::m_listeners;
/**
* Initialse the connection to VPP
*/
void
OM::init()
{
m_db = new client_db();
}
void
OM::mark(const client_db::key_t& key)
{
/*
* Find if the object already stored on behalf of this key.
* and mark them stale
*/
object_ref_list& objs = m_db->find(key);
auto mark_obj = [](const object_ref& oref) { oref.mark(); };
std::for_each(objs.begin(), objs.end(), mark_obj);
}
void
OM::sweep(const client_db::key_t& key)
{
/*
* Find if the object already stored on behalf of this key.
* and mark them stale
*/
object_ref_list& objs = m_db->find(key);
for (auto it = objs.begin(); it != objs.end();) {
if (it->stale()) {
it = objs.erase(it);
} else {
++it;
}
}
HW::write();
}
void
OM::remove(const client_db::key_t& key)
{
/*
* Simply reset the list for this key. This will desctruct the
* object list and shared_ptrs therein. When the last shared_ptr
* goes the objects desctructor is called and the object is
* removed from OM
*/
m_db->flush(key);
HW::write();
}
void
OM::replay()
{
VOM_LOG(log_level_t::INFO) << "replay";
/*
* the listeners are sorted in dependency order
*/
for (listener* l : *m_listeners) {
l->handle_replay();
HW::write();
}
}
void
OM::dump(const client_db::key_t& key, std::ostream& os)
{
m_db->dump(key, os);
}
void
OM::dump(std::ostream& os)
{
m_db->dump(os);
}
void
OM::populate(const client_db::key_t& key)
{
VOM_LOG(log_level_t::INFO) << "populate";
/*
* the listeners are sorted in dependency order
*/
for (listener* l : *m_listeners) {
l->handle_populate(key);
}
/*
* once we have it all, mark it stale.
*/
mark(key);
}
bool
OM::register_listener(OM::listener* listener)
{
if (!m_listeners) {
m_listeners.reset(new listener_list);
}
m_listeners->insert(listener);
return (true);
}
OM::mark_n_sweep::mark_n_sweep(const client_db::key_t& key)
: m_key(key)
{
OM::mark(m_key);
}
OM::mark_n_sweep::~mark_n_sweep()
{
OM::sweep(m_key);
}
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "mozilla")
* End:
*/
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