Add Manager class
This class will hold the IBM interface objects.
It has callbacks on the interfaces added and removed
signals for the actual logging entries so it knows when
to add and remove the IBM interface objects.
It can hold multiple interface objects per logging entry
by using a map of std::experimental::any objects.
Future commits will add more functionality, such as doing
the actual creation of the interface objects and checking
for existing error logs entries on startup.
Change-Id: I1feef9e3416380a0bc9f94e470204eeac5464200
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
diff --git a/manager.hpp b/manager.hpp
new file mode 100644
index 0000000..f779939
--- /dev/null
+++ b/manager.hpp
@@ -0,0 +1,105 @@
+#pragma once
+
+#include <experimental/any>
+#include <experimental/filesystem>
+#include <map>
+#include <sdbusplus/bus.hpp>
+#include "dbus.hpp"
+#include "interfaces.hpp"
+
+namespace ibm
+{
+namespace logging
+{
+
+
+/**
+ * @class Manager
+ *
+ * This class hosts IBM specific interfaces for the error logging
+ * entry objects. It watches for interfaces added and removed
+ * signals to know when to create and delete objects. Handling the
+ * xyz.openbmc_project.Logging service going away is done at the
+ * systemd service level where this app will be stopped too.
+ */
+class Manager
+{
+ public:
+
+ Manager() = delete;
+ ~Manager() = default;
+ Manager(const Manager&) = delete;
+ Manager& operator=(const Manager&) = delete;
+ Manager(Manager&&) = delete;
+ Manager& operator=(Manager&&) = delete;
+
+ /**
+ * Constructor
+ *
+ * @param[in] bus - the D-Bus bus object
+ */
+ explicit Manager(sdbusplus::bus::bus& bus);
+
+ private:
+
+ /**
+ * The callback for an interfaces added signal
+ *
+ * Creates the IBM interfaces for the log entry
+ * that was just created.
+ *
+ * @param[in] msg - the sdbusplus message
+ */
+ void interfaceAdded(sdbusplus::message::message& msg);
+
+ /**
+ * The callback for an interfaces removed signal
+ *
+ * Removes the IBM interfaces for the log entry
+ * that was just removed.
+ *
+ * @param[in] msg - the sdbusplus message
+ */
+ void interfaceRemoved(sdbusplus::message::message& msg);
+
+ /**
+ * Returns the entry ID for a log
+ *
+ * @param[in] objectPath - the object path of the log
+ *
+ * @return uint32_t - the ID
+ */
+ inline uint32_t getEntryID(const std::string& objectPath)
+ {
+ std::experimental::filesystem::path path(objectPath);
+ return std::stoul(path.filename());
+ }
+
+ /**
+ * The sdbusplus bus object
+ */
+ sdbusplus::bus::bus& bus;
+
+ /**
+ * The match object for interfacesAdded
+ */
+ sdbusplus::bus::match_t addMatch;
+
+ /**
+ * The match object for interfacesRemoved
+ */
+ sdbusplus::bus::match_t removeMatch;
+
+ using EntryID = uint32_t;
+ using InterfaceMap = std::map<InterfaceType, std::experimental::any>;
+ using EntryMap = std::map<EntryID, InterfaceMap>;
+
+ /**
+ * A map of the error log IDs to their IBM interface objects.
+ * There may be multiple interfaces per ID.
+ */
+ EntryMap entries;
+};
+
+}
+}