Implement create function in event manager

Implement the logging event interface.

Create the dbus event object based on the event type.

Change-Id: Idfa9e5c43f170d904fd25f22d73e0509b1785fc9
Signed-off-by: Ratan Gupta <ratagupt@in.ibm.com>
diff --git a/src/event_entry.hpp b/src/event_entry.hpp
new file mode 100644
index 0000000..7be66d9
--- /dev/null
+++ b/src/event_entry.hpp
@@ -0,0 +1,62 @@
+#pragma once
+
+#include "sdbusplus.hpp"
+#include "xyz/openbmc_project/Logging/Event/server.hpp"
+
+#include <sdbusplus/bus.hpp>
+#include <sdbusplus/server/object.hpp>
+
+namespace phosphor
+{
+namespace events
+{
+
+using namespace phosphor::dbus::monitoring;
+
+using EntryIface = sdbusplus::server::object::object <
+                        sdbusplus::xyz::openbmc_project::Logging::server::Event >;
+
+/** @class Entry
+ *  @brief OpenBMC Event entry implementation.
+ *  @details A concrete implementation for the
+ *  xyz.openbmc_project.Event.Entry.
+ */
+class Entry : public EntryIface
+{
+    public:
+        Entry() = delete;
+        Entry(const Entry&) = delete;
+        Entry& operator=(const Entry&) = delete;
+        Entry(Entry&&) = delete;
+        Entry& operator=(Entry&&) = delete;
+        virtual ~Entry() = default;
+
+        /** @brief Constructor to put object onto bus at a dbus path.
+         *  @param[in] path - Path to attach at.
+         *  @param[in] eventId - The event entry id.
+         *  @param[in] timestamp - timestamp when the event created.
+         *  @param[in] msg - The message of the event.
+         *  @param[in] metaData - The event metadata.
+         */
+        Entry(
+            const std::string& path,
+            uint64_t eventTimestamp,
+            std::string&& msg,
+            std::vector<std::string>&& metaData) :
+                EntryIface(SDBusPlus::getBus(), path.c_str(), true),
+                objectPath(path)
+            {
+                timestamp(eventTimestamp);
+                message(msg);
+                additionalData(metaData);
+                // Emit deferred signal.
+                this->emit_object_added();
+            }
+
+        /** @brief Path of Object. */
+        std::string objectPath;
+
+};
+
+} // namespace events
+} // namespace phosphor