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/**
* Copyright © 2017 IBM Corporation
*
* 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 "config.h"
#include "event_manager.hpp"
#include "event.hpp"
#include "event_serialize.hpp"
#include <experimental/filesystem>
namespace phosphor
{
namespace events
{
void Manager::create(const std::string& eventName,
const std::string& eventMessage,
const std::string& objectPath,
const std::string& propertyName,
const std::string& propertyValue)
{
using namespace std::string_literals;
namespace fs = std::experimental::filesystem;
auto msg = eventMessage;
std::vector<std::string> additionalData;
auto propVal = propertyName + "=" + propertyValue;
auto path = "path="s + objectPath;
additionalData.push_back(std::move(path));
additionalData.push_back(std::move(propVal));
auto& eventQueue = eventMap[eventName];
// get the last event entry for this event
// to generate the id.
auto id = 0;
if (eventQueue.size() > 0)
{
fs::path path(eventQueue.back()->objectPath);
id = std::stoi(std::string(path.filename().c_str()));
id++;
}
auto ms = std::chrono::duration_cast<std::chrono::milliseconds>(
std::chrono::system_clock::now().time_since_epoch())
.count();
auto objPath =
std::string(OBJ_EVENT) + '/' + eventName + '/' + std::to_string(id);
// check for capping of the events,if cap reached then erase the oldest
// event.
if (eventQueue.size() == MAX_EVENTS)
{
fs::path eventPath(EVENTS_PERSIST_PATH);
eventPath /= eventName;
eventPath /= std::to_string(eventQueue.front()->timestamp());
eventQueue.pop();
std::error_code ec;
fs::remove(eventPath, ec);
}
auto event =
std::make_unique<Entry>(objPath,
ms, // Milliseconds since 1970
std::move(msg), std::move(additionalData));
serialize(*event, eventName);
eventQueue.push(std::move(event));
}
void Manager::restore()
{
if (!fs::exists(EVENTS_PERSIST_PATH) || fs::is_empty(EVENTS_PERSIST_PATH))
{
return;
}
for (auto& eventFile :
fs::recursive_directory_iterator(EVENTS_PERSIST_PATH))
{
if (!fs::is_regular_file(eventFile))
{
continue;
}
EventQueue events;
auto eventPath = eventFile.path().string();
auto pos1 = eventPath.rfind("/");
auto pos2 = eventPath.rfind("/", pos1 - 1) + 1;
auto eventName = eventPath.substr(pos2, (pos1 - pos2));
auto validEvent = false;
auto timestamp = eventFile.path().filename().string();
auto tsNum = std::stoll(timestamp);
auto objPath =
std::string(OBJ_EVENT) + '/' + eventName + '/' + timestamp;
auto event = std::make_unique<Entry>(objPath, tsNum);
if (deserialize(eventFile.path(), *event))
{
event->emit_object_added();
events.push(std::move(event));
validEvent = true;
}
if (validEvent)
{
eventMap[eventName] = std::move(events);
}
}
}
Manager& getManager()
{
static Manager mgr;
return mgr;
}
} // namespace events
} // namespace phosphor
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