Brad Bishop | 4b916f1 | 2017-05-23 18:06:38 -0400 | [diff] [blame] | 1 | #pragma once |
| 2 | |
| 3 | #include <sdbusplus/message.hpp> |
| 4 | #include <sdbusplus/bus/match.hpp> |
| 5 | #include <vector> |
| 6 | #include "data_types.hpp" |
| 7 | #include "propertywatch.hpp" |
| 8 | |
| 9 | namespace phosphor |
| 10 | { |
| 11 | namespace dbus |
| 12 | { |
| 13 | namespace monitoring |
| 14 | { |
| 15 | |
| 16 | static constexpr auto MAPPER_BUSNAME = "xyz.openbmc_project.ObjectMapper"; |
| 17 | static constexpr auto MAPPER_PATH = "/xyz/openbmc_project/object_mapper"; |
| 18 | static constexpr auto MAPPER_INTERFACE = |
| 19 | "xyz.openbmc_project.ObjectMapper"; |
| 20 | |
| 21 | using MappedPropertyIndex = |
| 22 | RefKeyMap<const std::string, |
| 23 | RefKeyMap<const std::string, |
| 24 | RefVector<const std::string>>>; |
| 25 | |
| 26 | MappedPropertyIndex convert(const PropertyIndex& index); |
| 27 | |
| 28 | template <typename DBusInterfaceType> |
| 29 | void PropertyWatch<DBusInterfaceType>::start() |
| 30 | { |
| 31 | if (alreadyRan) |
| 32 | { |
| 33 | return; |
| 34 | } |
| 35 | else |
| 36 | { |
| 37 | alreadyRan = true; |
| 38 | } |
| 39 | |
| 40 | // The index has a flat layout which is not optimal here. Nest |
| 41 | // properties in a map of interface names in a map of object paths. |
| 42 | auto mapped = convert(index); |
| 43 | |
| 44 | for (const auto& m : mapped) |
| 45 | { |
| 46 | const auto& path = m.first.get(); |
| 47 | const auto& interfaces = m.second; |
| 48 | |
| 49 | // Watch for new interfaces on this path. |
| 50 | DBusInterfaceType::addMatch( |
| 51 | sdbusplus::bus::match::rules::interfacesAdded(path), |
| 52 | [this](auto & msg) |
| 53 | // *INDENT-OFF* |
| 54 | { |
| 55 | this->interfacesAdded(msg); |
| 56 | }); |
| 57 | // *INDENT-ON* |
| 58 | |
| 59 | // Do a query to populate the cache. Start with a mapper query. |
| 60 | // The specific services are queried below. |
| 61 | const std::vector<std::string> queryInterfaces; // all interfaces |
| 62 | auto mapperResp = |
| 63 | DBusInterfaceType::template callMethodAndRead<GetObject>( |
| 64 | MAPPER_BUSNAME, |
| 65 | MAPPER_PATH, |
| 66 | MAPPER_INTERFACE, |
| 67 | "GetObject", |
| 68 | path, |
| 69 | queryInterfaces); |
| 70 | |
| 71 | for (const auto& i : interfaces) |
| 72 | { |
| 73 | const auto& interface = i.first.get(); |
| 74 | |
| 75 | // Watch for property changes on this interface. |
| 76 | DBusInterfaceType::addMatch( |
| 77 | sdbusplus::bus::match::rules::propertiesChanged( |
| 78 | path, interface), |
| 79 | [this](auto & msg) |
| 80 | // *INDENT-OFF* |
| 81 | { |
| 82 | std::string interface; |
| 83 | msg.read(interface); |
| 84 | auto path = msg.get_path(); |
| 85 | this->propertiesChanged(msg, path, interface); |
| 86 | }); |
| 87 | // *INDENT-ON* |
| 88 | |
| 89 | // The mapper response is a busname:[interfaces] map. Look for |
| 90 | // each interface in the index and if found, query the service and |
| 91 | // populate the cache entries for the interface. |
| 92 | for (const auto& mr : mapperResp) |
| 93 | { |
| 94 | const auto& busName = mr.first; |
| 95 | const auto& mapperInterfaces = mr.second; |
| 96 | if (mapperInterfaces.end() == std::find( |
| 97 | mapperInterfaces.begin(), |
| 98 | mapperInterfaces.end(), |
| 99 | interface)) |
| 100 | { |
| 101 | // This interface isn't being watched. |
| 102 | continue; |
| 103 | } |
| 104 | |
| 105 | // Delegate type specific property updates to subclasses. |
| 106 | updateProperties(busName, path, interface); |
| 107 | } |
| 108 | } |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | template <typename T, typename DBusInterfaceType> |
| 113 | void PropertyWatchOfType<T, DBusInterfaceType>::updateProperties( |
| 114 | const std::string& busName, |
| 115 | const std::string& path, |
| 116 | const std::string& interface) |
| 117 | { |
| 118 | auto properties = |
| 119 | DBusInterfaceType::template callMethodAndRead<PropertiesChanged<T>>( |
| 120 | busName.c_str(), |
| 121 | path.c_str(), |
| 122 | "org.freedesktop.DBus.Properties", |
| 123 | "GetAll", |
| 124 | interface); |
| 125 | propertiesChanged(path, interface, properties); |
| 126 | } |
| 127 | |
| 128 | template <typename T, typename DBusInterfaceType> |
| 129 | void PropertyWatchOfType<T, DBusInterfaceType>::propertiesChanged( |
| 130 | const std::string& path, |
| 131 | const std::string& interface, |
| 132 | const PropertiesChanged<T>& properties) |
| 133 | { |
| 134 | // Update the cache for any watched properties. |
| 135 | for (const auto& p : properties) |
| 136 | { |
| 137 | auto key = std::make_tuple(path, interface, p.first); |
| 138 | auto item = this->index.find(key); |
| 139 | if (item == this->index.end()) |
| 140 | { |
| 141 | // This property isn't being watched. |
| 142 | continue; |
| 143 | } |
| 144 | |
| 145 | std::get<2>(item->second).get() = p.second.template get<T>(); |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | template <typename T, typename DBusInterfaceType> |
| 150 | void PropertyWatchOfType<T, DBusInterfaceType>::propertiesChanged( |
| 151 | sdbusplus::message::message& msg, |
| 152 | const std::string& path, |
| 153 | const std::string& interface) |
| 154 | { |
| 155 | PropertiesChanged<T> properties; |
| 156 | msg.read(properties); |
| 157 | propertiesChanged(path, interface, properties); |
| 158 | } |
| 159 | |
| 160 | template <typename T, typename DBusInterfaceType> |
| 161 | void PropertyWatchOfType<T, DBusInterfaceType>::interfacesAdded( |
| 162 | const std::string& path, |
| 163 | const InterfacesAdded<T>& interfaces) |
| 164 | { |
| 165 | for (const auto& i : interfaces) |
| 166 | { |
| 167 | propertiesChanged(path, i.first, i.second); |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | template <typename T, typename DBusInterfaceType> |
| 172 | void PropertyWatchOfType<T, DBusInterfaceType>::interfacesAdded( |
| 173 | sdbusplus::message::message& msg) |
| 174 | { |
| 175 | sdbusplus::message::object_path path; |
| 176 | InterfacesAdded<T> interfaces; |
| 177 | msg.read(path, interfaces); |
| 178 | interfacesAdded(path, interfaces); |
| 179 | } |
| 180 | |
| 181 | } // namespace monitoring |
| 182 | } // namespace dbus |
| 183 | } // namespace phosphor |