blob: 26a2bab486d89bc6bfdcb17c177a948d10853163 [file] [log] [blame]
#pragma once
#include <boost/system/error_code.hpp>
#include <chrono>
#include <ipmid/api-types.hpp>
#include <ipmid/message.hpp>
#include <ipmid/types.hpp>
#include <optional>
#include <sdbusplus/server.hpp>
namespace ipmi
{
using namespace std::literals::chrono_literals;
constexpr auto MAPPER_BUS_NAME = "xyz.openbmc_project.ObjectMapper";
constexpr auto MAPPER_OBJ = "/xyz/openbmc_project/object_mapper";
constexpr auto MAPPER_INTF = "xyz.openbmc_project.ObjectMapper";
constexpr auto ROOT = "/";
constexpr auto HOST_MATCH = "host0";
constexpr auto PROP_INTF = "org.freedesktop.DBus.Properties";
constexpr auto DELETE_INTERFACE = "xyz.openbmc_project.Object.Delete";
constexpr auto METHOD_GET = "Get";
constexpr auto METHOD_GET_ALL = "GetAll";
constexpr auto METHOD_SET = "Set";
/* Use a value of 5s which aligns with BT/KCS bridged timeouts, rather
* than the default 25s D-Bus timeout. */
constexpr std::chrono::microseconds IPMI_DBUS_TIMEOUT = 5s;
/** @class ServiceCache
* @brief Caches lookups of service names from the object mapper.
* @details Most ipmi commands need to talk to other dbus daemons to perform
* their intended actions on the BMC. This usually means they will
* first look up the service name providing the interface they
* require. This class reduces the number of such calls by caching
* the lookup for a specific service.
*/
class ServiceCache
{
public:
/** @brief Creates a new service cache for the given interface
* and path.
*
* @param[in] intf - The interface used for each lookup
* @param[in] path - The path used for each lookup
*/
ServiceCache(const std::string& intf, const std::string& path);
ServiceCache(std::string&& intf, std::string&& path);
/** @brief Gets the service name from the cache or does in a
* lookup when invalid.
*
* @param[in] bus - The bus associated with and used for looking
* up the service.
*/
const std::string& getService(sdbusplus::bus_t& bus);
/** @brief Invalidates the current service name */
void invalidate();
/** @brief A wrapper around sdbusplus bus.new_method_call
*
* @param[in] bus - The bus used for calling the method
* @param[in] intf - The interface containing the method
* @param[in] method - The method name
* @return The message containing the method call.
*/
sdbusplus::message_t newMethodCall(sdbusplus::bus_t& bus, const char* intf,
const char* method);
/** @brief Check to see if the current cache is valid
*
* @param[in] bus - The bus used for the service lookup
* @return True if the cache is valid false otherwise.
*/
bool isValid(sdbusplus::bus_t& bus) const;
private:
/** @brief DBUS interface provided by the service */
const std::string intf;
/** @brief DBUS path provided by the service */
const std::string path;
/** @brief The name of the service if valid */
std::optional<std::string> cachedService;
/** @brief The name of the bus used in the service lookup */
std::optional<std::string> cachedBusName;
};
/**
* @brief Get the DBUS Service name for the input dbus path
*
* @param[in] bus - DBUS Bus Object
* @param[in] intf - DBUS Interface
* @param[in] path - DBUS Object Path
*
*/
std::string getService(sdbusplus::bus_t& bus, const std::string& intf,
const std::string& path);
/** @brief Gets the dbus object info implementing the given interface
* from the given subtree.
* @param[in] bus - DBUS Bus Object.
* @param[in] interface - Dbus interface.
* @param[in] subtreePath - subtree from where the search should start.
* @param[in] match - identifier for object.
* @return On success returns the object having objectpath and servicename.
*/
DbusObjectInfo getDbusObject(sdbusplus::bus_t& bus,
const std::string& interface,
const std::string& subtreePath = ROOT,
const std::string& match = {});
/** @brief Gets the value associated with the given object
* and the interface.
* @param[in] bus - DBUS Bus Object.
* @param[in] service - Dbus service name.
* @param[in] objPath - Dbus object path.
* @param[in] interface - Dbus interface.
* @param[in] property - name of the property.
* @return On success returns the value of the property.
*/
Value getDbusProperty(sdbusplus::bus_t& bus, const std::string& service,
const std::string& objPath, const std::string& interface,
const std::string& property,
std::chrono::microseconds timeout = IPMI_DBUS_TIMEOUT);
/** @brief Gets all the properties associated with the given object
* and the interface.
* @param[in] bus - DBUS Bus Object.
* @param[in] service - Dbus service name.
* @param[in] objPath - Dbus object path.
* @param[in] interface - Dbus interface.
* @return On success returns the map of name value pair.
*/
PropertyMap
getAllDbusProperties(sdbusplus::bus_t& bus, const std::string& service,
const std::string& objPath,
const std::string& interface,
std::chrono::microseconds timeout = IPMI_DBUS_TIMEOUT);
/** @brief Gets all managed objects associated with the given object
* path and service.
* @param[in] bus - D-Bus Bus Object.
* @param[in] service - D-Bus service name.
* @param[in] objPath - D-Bus object path.
* @return On success returns the map of name value pair.
*/
ObjectValueTree getManagedObjects(sdbusplus::bus_t& bus,
const std::string& service,
const std::string& objPath);
/** @brief Sets the property value of the given object.
* @param[in] bus - DBUS Bus Object.
* @param[in] service - Dbus service name.
* @param[in] objPath - Dbus object path.
* @param[in] interface - Dbus interface.
* @param[in] property - name of the property.
* @param[in] value - value which needs to be set.
*/
void setDbusProperty(sdbusplus::bus_t& bus, const std::string& service,
const std::string& objPath, const std::string& interface,
const std::string& property, const Value& value,
std::chrono::microseconds timeout = IPMI_DBUS_TIMEOUT);
/** @brief Gets all the dbus objects from the given service root
* which matches the object identifier.
* @param[in] bus - DBUS Bus Object.
* @param[in] serviceRoot - Service root path.
* @param[in] interface - Dbus interface.
* @param[in] match - Identifier for a path.
* @returns map of object path and service info.
*/
ObjectTree getAllDbusObjects(sdbusplus::bus_t& bus,
const std::string& serviceRoot,
const std::string& interface,
const std::string& match = {});
/** @brief Deletes all the dbus objects from the given service root
which matches the object identifier.
* @param[in] bus - DBUS Bus Object.
* @param[in] serviceRoot - Service root path.
* @param[in] interface - Dbus interface.
* @param[in] match - Identifier for object.
*/
void deleteAllDbusObjects(sdbusplus::bus_t& bus, const std::string& serviceRoot,
const std::string& interface,
const std::string& match = {});
/** @brief Gets the ancestor objects of the given object
which implements the given interface.
* @param[in] bus - Dbus bus object.
* @param[in] path - Child Dbus object path.
* @param[in] interfaces - Dbus interface list.
* @return map of object path and service info.
*/
ObjectTree getAllAncestors(sdbusplus::bus_t& bus, const std::string& path,
InterfaceList&& interfaces);
/********* Begin co-routine yielding alternatives ***************/
/** @brief Get the D-Bus Service name for the input D-Bus path
*
* @param[in] ctx - ipmi::Context::ptr
* @param[in] intf - D-Bus Interface
* @param[in] path - D-Bus Object Path
* @param[out] service - requested service name
* @return boost error code
*
*/
boost::system::error_code getService(Context::ptr ctx, const std::string& intf,
const std::string& path,
std::string& service);
/** @brief Gets the D-Bus object info implementing the given interface
* from the given subtree.
* @param[in] ctx - ipmi::Context::ptr
* @param[in] interface - D-Bus interface.
* @param[in][optional] subtreePath - subtree from where the search starts.
* @param[in][optional] match - identifier for object.
* @param[out] D-Bus object with path and service name
* @return - boost error code object
*/
boost::system::error_code getDbusObject(Context::ptr ctx,
const std::string& interface,
const std::string& subtreePath,
const std::string& match,
DbusObjectInfo& dbusObject);
// default for ROOT for subtreePath and std::string{} for match
static inline boost::system::error_code
getDbusObject(Context::ptr ctx, const std::string& interface,
DbusObjectInfo& dbusObject)
{
return getDbusObject(ctx, interface, ROOT, {}, dbusObject);
}
// default std::string{} for match
static inline boost::system::error_code
getDbusObject(Context::ptr ctx, const std::string& interface,
const std::string& subtreePath, DbusObjectInfo& dbusObject)
{
return getDbusObject(ctx, interface, subtreePath, {}, dbusObject);
}
/** @brief Gets the value associated with the given object
* and the interface.
* @param[in] ctx - ipmi::Context::ptr
* @param[in] service - D-Bus service name.
* @param[in] objPath - D-Bus object path.
* @param[in] interface - D-Bus interface.
* @param[in] property - name of the property.
* @param[out] propertyValue - value of the D-Bus property.
* @return - boost error code object
*/
template <typename Type>
boost::system::error_code
getDbusProperty(Context::ptr ctx, const std::string& service,
const std::string& objPath, const std::string& interface,
const std::string& property, Type& propertyValue)
{
boost::system::error_code ec;
auto variant = ctx->bus->yield_method_call<std::variant<Type>>(
ctx->yield, ec, service.c_str(), objPath.c_str(), PROP_INTF, METHOD_GET,
interface, property);
if (!ec)
{
Type* tmp = std::get_if<Type>(&variant);
if (tmp)
{
propertyValue = *tmp;
return ec;
}
// user requested incorrect type; make an error code for them
ec = boost::system::errc::make_error_code(
boost::system::errc::invalid_argument);
}
return ec;
}
/** @brief Gets all the properties associated with the given object
* and the interface.
* @param[in] ctx - ipmi::Context::ptr
* @param[in] service - D-Bus service name.
* @param[in] objPath - D-Bus object path.
* @param[in] interface - D-Bus interface.
* @param[out] properties - map of name value pair.
* @return - boost error code object
*/
boost::system::error_code getAllDbusProperties(Context::ptr ctx,
const std::string& service,
const std::string& objPath,
const std::string& interface,
PropertyMap& properties);
/** @brief Sets the property value of the given object.
* @param[in] ctx - ipmi::Context::ptr
* @param[in] service - D-Bus service name.
* @param[in] objPath - D-Bus object path.
* @param[in] interface - D-Bus interface.
* @param[in] property - name of the property.
* @param[in] value - value which needs to be set.
* @return - boost error code object
*/
boost::system::error_code
setDbusProperty(Context::ptr ctx, const std::string& service,
const std::string& objPath, const std::string& interface,
const std::string& property, const Value& value);
/** @brief Gets all the D-Bus objects from the given service root
* which matches the object identifier.
* @param[in] ctx - ipmi::Context::ptr
* @param[in] serviceRoot - Service root path.
* @param[in] interface - D-Bus interface.
* @param[in][optional] match - Identifier for a path.
* @param[out] objectree - map of object path and service info.
* @return - boost error code object
*/
boost::system::error_code getAllDbusObjects(Context::ptr ctx,
const std::string& serviceRoot,
const std::string& interface,
const std::string& match,
ObjectTree& objectTree);
// default std::string{} for match
static inline boost::system::error_code
getAllDbusObjects(Context::ptr ctx, const std::string& serviceRoot,
const std::string& interface, ObjectTree& objectTree)
{
return getAllDbusObjects(ctx, serviceRoot, interface, {}, objectTree);
}
/** @brief Deletes all the D-Bus objects from the given service root
which matches the object identifier.
* @param[in] ctx - ipmi::Context::ptr
* @param[out] ec - boost error code object
* @param[in] serviceRoot - Service root path.
* @param[in] interface - D-Bus interface.
* @param[in] match - Identifier for object.
*/
boost::system::error_code deleteAllDbusObjects(Context::ptr ctx,
const std::string& serviceRoot,
const std::string& interface,
const std::string& match = {});
/** @brief Gets all managed objects associated with the given object
* path and service.
* @param[in] ctx - ipmi::Context::ptr
* @param[in] service - D-Bus service name.
* @param[in] objPath - D-Bus object path.
* @param[out] objects - map of name value pair.
* @return - boost error code object
*/
boost::system::error_code getManagedObjects(Context::ptr ctx,
const std::string& service,
const std::string& objPath,
ObjectValueTree& objects);
/** @brief Gets the ancestor objects of the given object
which implements the given interface.
* @param[in] ctx - ipmi::Context::ptr
* @param[in] path - Child D-Bus object path.
* @param[in] interfaces - D-Bus interface list.
* @param[out] ObjectTree - map of object path and service info.
* @return - boost error code object
*/
boost::system::error_code getAllAncestors(Context::ptr ctx,
const std::string& path,
const InterfaceList& interfaces,
ObjectTree& objectTree);
/********* End co-routine yielding alternatives ***************/
/** @brief Retrieve the value from map of variants,
* returning a default if the key does not exist or the
* type of the value does not match the expected type
*
* @tparam T - type of expected value to return
* @param[in] props - D-Bus propery map (Map of variants)
* @param[in] name - key name of property to fetch
* @param[in] defaultValue - default value to return on error
* @return - value from propery map at name, or defaultValue
*/
template <typename T>
T mappedVariant(const ipmi::PropertyMap& props, const std::string& name,
const T& defaultValue)
{
auto item = props.find(name);
if (item == props.end())
{
return defaultValue;
}
const T* prop = std::get_if<T>(&item->second);
if (!prop)
{
return defaultValue;
}
return *prop;
}
/** @struct VariantToDoubleVisitor
* @brief Visitor to convert variants to doubles
* @details Performs a static cast on the underlying type
*/
struct VariantToDoubleVisitor
{
template <typename T>
std::enable_if_t<std::is_arithmetic<T>::value, double>
operator()(const T& t) const
{
return static_cast<double>(t);
}
template <typename T>
std::enable_if_t<!std::is_arithmetic<T>::value, double>
operator()(const T&) const
{
throw std::invalid_argument("Cannot translate type to double");
}
};
namespace method_no_args
{
/** @brief Calls the Dbus method which waits for response.
* @param[in] bus - DBUS Bus Object.
* @param[in] service - Dbus service name.
* @param[in] objPath - Dbus object path.
* @param[in] interface - Dbus interface.
* @param[in] method - Dbus method.
*/
void callDbusMethod(sdbusplus::bus_t& bus, const std::string& service,
const std::string& objPath, const std::string& interface,
const std::string& method);
} // namespace method_no_args
/** @brief Perform the low-level i2c bus write-read.
* @param[in] i2cBus - i2c bus device node name, such as /dev/i2c-2.
* @param[in] slaveAddr - i2c device slave address.
* @param[in] writeData - The data written to i2c device.
* @param[out] readBuf - Data read from the i2c device.
*/
ipmi::Cc i2cWriteRead(std::string i2cBus, const uint8_t slaveAddr,
std::vector<uint8_t> writeData,
std::vector<uint8_t>& readBuf);
} // namespace ipmi