manager.cpp - openbmc/ibm-logging - Gitiles

 /**
  * Copyright © 2018 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 "manager.hpp"

 #include "callout.hpp"
 #include "policy_find.hpp"

 #include <phosphor-logging/log.hpp>

 namespace ibm
 {
 namespace logging
 {

 namespace fs = std::experimental::filesystem;
 using namespace phosphor::logging;

 Manager::Manager(sdbusplus::bus_t& bus) :
     bus(bus),
     addMatch(bus,
              sdbusplus::bus::match::rules::interfacesAdded() +
                  sdbusplus::bus::match::rules::path_namespace(LOGGING_PATH),
              std::bind(std::mem_fn(&Manager::interfaceAdded), this,
                        std::placeholders::_1)),
     removeMatch(bus,
                 sdbusplus::bus::match::rules::interfacesRemoved() +
                     sdbusplus::bus::match::rules::path_namespace(LOGGING_PATH),
                 std::bind(std::mem_fn(&Manager::interfaceRemoved), this,
                           std::placeholders::_1))
 #ifdef USE_POLICY_INTERFACE
     ,
     policies(POLICY_JSON_PATH)
 #endif
 {
     createAll();
 }

 void Manager::createAll()
 {
     try
     {
         auto objects = getManagedObjects(bus, LOGGING_BUSNAME, LOGGING_PATH);

         for (const auto& object : objects)
         {
             const auto& interfaces = object.second;

             auto propertyMap = interfaces.find(LOGGING_IFACE);

             if (propertyMap != interfaces.end())
             {
                 createWithRestore(object.first, interfaces);
             }
         }
     }
     catch (const sdbusplus::exception_t& e)
     {
         log<level::ERR>("sdbusplus error getting logging managed objects",
                         entry("ERROR=%s", e.what()));
     }
 }

 void Manager::createWithRestore(const std::string& objectPath,
                                 const DbusInterfaceMap& interfaces)
 {
     createObject(objectPath, interfaces);

     restoreCalloutObjects(objectPath, interfaces);
 }

 void Manager::create(const std::string& objectPath,
                      const DbusInterfaceMap& interfaces)
 {
     createObject(objectPath, interfaces);

     createCalloutObjects(objectPath, interfaces);
 }

 void Manager::createObject(const std::string& objectPath,
                            const DbusInterfaceMap& interfaces)
 {
 #ifdef USE_POLICY_INTERFACE
     auto logInterface = interfaces.find(LOGGING_IFACE);
     createPolicyInterface(objectPath, logInterface->second);
 #endif
 }

 void Manager::erase(EntryID id)
 {
     fs::remove_all(getSaveDir(id));
     childEntries.erase(id);
     entries.erase(id);
 }

 void Manager::addInterface(const std::string& objectPath, InterfaceType type,
                            std::any& object)
 {
     auto id = getEntryID(objectPath);
     auto entry = entries.find(id);

     if (entry == entries.end())
     {
         InterfaceMap interfaces;
         interfaces.emplace(type, object);
         entries.emplace(id, std::move(interfaces));
     }
     else
     {
         entry->second.emplace(type, object);
     }
 }

 void Manager::addChildInterface(const std::string& objectPath,
                                 InterfaceType type, std::any& object)
 {
     auto id = getEntryID(objectPath);
     auto entry = childEntries.find(id);

     // childEntries is:
     // A map of error log entry IDs to:
     //  a map of interface types to:
     //    a vector of interface objects

     if (entry == childEntries.end())
     {
         ObjectList objects{object};
         InterfaceMapMulti interfaces;
         interfaces.emplace(type, std::move(objects));
         childEntries.emplace(id, std::move(interfaces));
     }
     else
     {
         auto i = entry->second.find(type);
         if (i == entry->second.end())
         {
             ObjectList objects{object};
             entry->second.emplace(type, objects);
         }
         else
         {
             i->second.emplace_back(object);
         }
     }
 }

 #ifdef USE_POLICY_INTERFACE
 void Manager::createPolicyInterface(const std::string& objectPath,
                                     const DbusPropertyMap& properties)
 {
     auto values = policy::find(policies, properties);

     auto object = std::make_shared<PolicyObject>(
         bus, objectPath.c_str(), PolicyObject::action::defer_emit);

     object->eventID(std::get<policy::EIDField>(values));
     object->description(std::get<policy::MsgField>(values));

     object->emit_object_added();

     std::any anyObject = object;

     addInterface(objectPath, InterfaceType::POLICY, anyObject);
 }
 #endif

 void Manager::createCalloutObjects(const std::string& objectPath,
                                    const DbusInterfaceMap& interfaces)
 {
     // Use the associations property in the org.openbmc.Associations
     // interface to find any callouts.  Then grab all properties on
     // the Asset interface for that object in the inventory to use
     // in our callout objects.

     auto associations = interfaces.find(ASSOC_IFACE);
     if (associations == interfaces.end())
     {
         return;
     }

     const auto& properties = associations->second;
     auto assocProperty = properties.find("Associations");
     auto assocValue = std::get<AssociationsPropertyType>(assocProperty->second);

     auto id = getEntryID(objectPath);
     auto calloutNum = 0;
     DbusSubtree subtree;

     for (const auto& association : assocValue)
     {
         try
         {
             if (std::get<forwardPos>(association) != "callout")
             {
                 continue;
             }

             auto callout = std::get<endpointPos>(association);

             if (subtree.empty())
             {
                 subtree = getSubtree(bus, "/", 0, ASSET_IFACE);
                 if (subtree.empty())
                 {
                     break;
                 }
             }

             auto service = getService(callout, ASSET_IFACE, subtree);
             if (service.empty())
             {
                 continue;
             }

             auto properties =
                 getAllProperties(bus, service, callout, ASSET_IFACE);
             if (properties.empty())
             {
                 continue;
             }

             auto calloutPath = getCalloutObjectPath(objectPath, calloutNum);

             auto object = std::make_shared<Callout>(
                 bus, calloutPath, callout, calloutNum,
                 getLogTimestamp(interfaces), properties);

             auto dir = getCalloutSaveDir(id);
             if (!fs::exists(dir))
             {
                 fs::create_directories(dir);
             }
             object->serialize(dir);

             std::any anyObject = object;
             addChildInterface(objectPath, InterfaceType::CALLOUT, anyObject);
             calloutNum++;
         }
         catch (const sdbusplus::exception_t& e)
         {
             log<level::ERR>("sdbusplus exception", entry("ERROR=%s", e.what()));
         }
     }
 }

 void Manager::restoreCalloutObjects(const std::string& objectPath,
                                     const DbusInterfaceMap& interfaces)
 {
     auto saveDir = getCalloutSaveDir(getEntryID(objectPath));

     if (!fs::exists(saveDir))
     {
         return;
     }

     size_t id;
     for (auto& f : fs::directory_iterator(saveDir))
     {
         try
         {
             id = std::stoul(f.path().filename());
         }
         catch (const std::exception& e)
         {
             log<level::ERR>("Invalid IBM logging callout save file. Deleting",
                             entry("FILE=%s", f.path().c_str()));
             fs::remove(f.path());
             continue;
         }

         auto path = getCalloutObjectPath(objectPath, id);
         auto callout = std::make_shared<Callout>(bus, path, id,
                                                  getLogTimestamp(interfaces));
         if (callout->deserialize(saveDir))
         {
             callout->emit_object_added();
             std::any anyObject = callout;
             addChildInterface(objectPath, InterfaceType::CALLOUT, anyObject);
         }
     }
 }

 void Manager::interfaceAdded(sdbusplus::message_t& msg)
 {
     sdbusplus::message::object_path path;
     DbusInterfaceMap interfaces;

     msg.read(path, interfaces);

     // Find the Logging.Entry interface with all of its properties
     // to pass to create().
     if (interfaces.find(LOGGING_IFACE) != interfaces.end())
     {
         create(path, interfaces);
     }
 }

 uint64_t Manager::getLogTimestamp(const DbusInterfaceMap& interfaces)
 {
     auto interface = interfaces.find(LOGGING_IFACE);
     if (interface != interfaces.end())
     {
         auto property = interface->second.find("Timestamp");
         if (property != interface->second.end())
         {
             return std::get<uint64_t>(property->second);
         }
     }

     return 0;
 }

 fs::path Manager::getSaveDir(EntryID id)
 {
     return fs::path{ERRLOG_PERSIST_PATH} / std::to_string(id);
 }

 fs::path Manager::getCalloutSaveDir(EntryID id)
 {
     return getSaveDir(id) / "callouts";
 }

 std::string Manager::getCalloutObjectPath(const std::string& objectPath,
                                           uint32_t calloutNum)
 {
     return fs::path{objectPath} / "callouts" / std::to_string(calloutNum);
 }

 void Manager::interfaceRemoved(sdbusplus::message_t& msg)
 {
     sdbusplus::message::object_path path;
     DbusInterfaceList interfaces;

     msg.read(path, interfaces);

     // If the Logging.Entry interface was removed, then remove
     // our object

     auto i = std::find(interfaces.begin(), interfaces.end(), LOGGING_IFACE);

     if (i != interfaces.end())
     {
         erase(getEntryID(path));
     }
 }
 } // namespace logging
 } // namespace ibm
	/**
	* Copyright © 2018 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 "manager.hpp"

	#include "callout.hpp"
	#include "policy_find.hpp"

	#include <phosphor-logging/log.hpp>

	namespace ibm
	{
	namespace logging
	{

	namespace fs = std::experimental::filesystem;
	using namespace phosphor::logging;

	Manager::Manager(sdbusplus::bus_t& bus) :
	bus(bus),
	addMatch(bus,
	sdbusplus::bus::match::rules::interfacesAdded() +
	sdbusplus::bus::match::rules::path_namespace(LOGGING_PATH),
	std::bind(std::mem_fn(&Manager::interfaceAdded), this,
	std::placeholders::_1)),
	removeMatch(bus,
	sdbusplus::bus::match::rules::interfacesRemoved() +
	sdbusplus::bus::match::rules::path_namespace(LOGGING_PATH),
	std::bind(std::mem_fn(&Manager::interfaceRemoved), this,
	std::placeholders::_1))
	#ifdef USE_POLICY_INTERFACE
	,
	policies(POLICY_JSON_PATH)
	#endif
	{
	createAll();
	}

	void Manager::createAll()
	{
	try
	{
	auto objects = getManagedObjects(bus, LOGGING_BUSNAME, LOGGING_PATH);

	for (const auto& object : objects)
	{
	const auto& interfaces = object.second;

	auto propertyMap = interfaces.find(LOGGING_IFACE);

	if (propertyMap != interfaces.end())
	{
	createWithRestore(object.first, interfaces);
	}
	}
	}
	catch (const sdbusplus::exception_t& e)
	{
	log<level::ERR>("sdbusplus error getting logging managed objects",
	entry("ERROR=%s", e.what()));
	}
	}

	void Manager::createWithRestore(const std::string& objectPath,
	const DbusInterfaceMap& interfaces)
	{
	createObject(objectPath, interfaces);

	restoreCalloutObjects(objectPath, interfaces);
	}

	void Manager::create(const std::string& objectPath,
	const DbusInterfaceMap& interfaces)
	{
	createObject(objectPath, interfaces);

	createCalloutObjects(objectPath, interfaces);
	}

	void Manager::createObject(const std::string& objectPath,
	const DbusInterfaceMap& interfaces)
	{
	#ifdef USE_POLICY_INTERFACE
	auto logInterface = interfaces.find(LOGGING_IFACE);
	createPolicyInterface(objectPath, logInterface->second);
	#endif
	}

	void Manager::erase(EntryID id)
	{
	fs::remove_all(getSaveDir(id));
	childEntries.erase(id);
	entries.erase(id);
	}

	void Manager::addInterface(const std::string& objectPath, InterfaceType type,
	std::any& object)
	{
	auto id = getEntryID(objectPath);
	auto entry = entries.find(id);

	if (entry == entries.end())
	{
	InterfaceMap interfaces;
	interfaces.emplace(type, object);
	entries.emplace(id, std::move(interfaces));
	}
	else
	{
	entry->second.emplace(type, object);
	}
	}

	void Manager::addChildInterface(const std::string& objectPath,
	InterfaceType type, std::any& object)
	{
	auto id = getEntryID(objectPath);
	auto entry = childEntries.find(id);

	// childEntries is:
	// A map of error log entry IDs to:
	// a map of interface types to:
	// a vector of interface objects

	if (entry == childEntries.end())
	{
	ObjectList objects{object};
	InterfaceMapMulti interfaces;
	interfaces.emplace(type, std::move(objects));
	childEntries.emplace(id, std::move(interfaces));
	}
	else
	{
	auto i = entry->second.find(type);
	if (i == entry->second.end())
	{
	ObjectList objects{object};
	entry->second.emplace(type, objects);
	}
	else
	{
	i->second.emplace_back(object);
	}
	}
	}

	#ifdef USE_POLICY_INTERFACE
	void Manager::createPolicyInterface(const std::string& objectPath,
	const DbusPropertyMap& properties)
	{
	auto values = policy::find(policies, properties);

	auto object = std::make_shared<PolicyObject>(
	bus, objectPath.c_str(), PolicyObject::action::defer_emit);

	object->eventID(std::get<policy::EIDField>(values));
	object->description(std::get<policy::MsgField>(values));

	object->emit_object_added();

	std::any anyObject = object;

	addInterface(objectPath, InterfaceType::POLICY, anyObject);
	}
	#endif

	void Manager::createCalloutObjects(const std::string& objectPath,
	const DbusInterfaceMap& interfaces)
	{
	// Use the associations property in the org.openbmc.Associations
	// interface to find any callouts. Then grab all properties on
	// the Asset interface for that object in the inventory to use
	// in our callout objects.

	auto associations = interfaces.find(ASSOC_IFACE);
	if (associations == interfaces.end())
	{
	return;
	}

	const auto& properties = associations->second;
	auto assocProperty = properties.find("Associations");
	auto assocValue = std::get<AssociationsPropertyType>(assocProperty->second);

	auto id = getEntryID(objectPath);
	auto calloutNum = 0;
	DbusSubtree subtree;

	for (const auto& association : assocValue)
	{
	try
	{
	if (std::get<forwardPos>(association) != "callout")
	{
	continue;
	}

	auto callout = std::get<endpointPos>(association);

	if (subtree.empty())
	{
	subtree = getSubtree(bus, "/", 0, ASSET_IFACE);
	if (subtree.empty())
	{
	break;
	}
	}

	auto service = getService(callout, ASSET_IFACE, subtree);
	if (service.empty())
	{
	continue;
	}

	auto properties =
	getAllProperties(bus, service, callout, ASSET_IFACE);
	if (properties.empty())
	{
	continue;
	}

	auto calloutPath = getCalloutObjectPath(objectPath, calloutNum);

	auto object = std::make_shared<Callout>(
	bus, calloutPath, callout, calloutNum,
	getLogTimestamp(interfaces), properties);

	auto dir = getCalloutSaveDir(id);
	if (!fs::exists(dir))
	{
	fs::create_directories(dir);
	}
	object->serialize(dir);

	std::any anyObject = object;
	addChildInterface(objectPath, InterfaceType::CALLOUT, anyObject);
	calloutNum++;
	}
	catch (const sdbusplus::exception_t& e)
	{
	log<level::ERR>("sdbusplus exception", entry("ERROR=%s", e.what()));
	}
	}
	}

	void Manager::restoreCalloutObjects(const std::string& objectPath,
	const DbusInterfaceMap& interfaces)
	{
	auto saveDir = getCalloutSaveDir(getEntryID(objectPath));

	if (!fs::exists(saveDir))
	{
	return;
	}

	size_t id;
	for (auto& f : fs::directory_iterator(saveDir))
	{
	try
	{
	id = std::stoul(f.path().filename());
	}
	catch (const std::exception& e)
	{
	log<level::ERR>("Invalid IBM logging callout save file. Deleting",
	entry("FILE=%s", f.path().c_str()));
	fs::remove(f.path());
	continue;
	}

	auto path = getCalloutObjectPath(objectPath, id);
	auto callout = std::make_shared<Callout>(bus, path, id,
	getLogTimestamp(interfaces));
	if (callout->deserialize(saveDir))
	{
	callout->emit_object_added();
	std::any anyObject = callout;
	addChildInterface(objectPath, InterfaceType::CALLOUT, anyObject);
	}
	}
	}

	void Manager::interfaceAdded(sdbusplus::message_t& msg)
	{
	sdbusplus::message::object_path path;
	DbusInterfaceMap interfaces;

	msg.read(path, interfaces);

	// Find the Logging.Entry interface with all of its properties
	// to pass to create().
	if (interfaces.find(LOGGING_IFACE) != interfaces.end())
	{
	create(path, interfaces);
	}
	}

	uint64_t Manager::getLogTimestamp(const DbusInterfaceMap& interfaces)
	{
	auto interface = interfaces.find(LOGGING_IFACE);
	if (interface != interfaces.end())
	{
	auto property = interface->second.find("Timestamp");
	if (property != interface->second.end())
	{
	return std::get<uint64_t>(property->second);
	}
	}

	return 0;
	}

	fs::path Manager::getSaveDir(EntryID id)
	{
	return fs::path{ERRLOG_PERSIST_PATH} / std::to_string(id);
	}

	fs::path Manager::getCalloutSaveDir(EntryID id)
	{
	return getSaveDir(id) / "callouts";
	}

	std::string Manager::getCalloutObjectPath(const std::string& objectPath,
	uint32_t calloutNum)
	{
	return fs::path{objectPath} / "callouts" / std::to_string(calloutNum);
	}

	void Manager::interfaceRemoved(sdbusplus::message_t& msg)
	{
	sdbusplus::message::object_path path;
	DbusInterfaceList interfaces;

	msg.read(path, interfaces);

	// If the Logging.Entry interface was removed, then remove
	// our object

	auto i = std::find(interfaces.begin(), interfaces.end(), LOGGING_IFACE);

	if (i != interfaces.end())
	{
	erase(getEntryID(path));
	}
	}
	} // namespace logging
	} // namespace ibm