presence: Add fan utility
Add utility wrappers for reading/writing
xyz.openbmc_project.Inventory.Item.Present.
Change-Id: I9d6bb776e56b67b9cac1f991790886ec8105d4b1
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/presence/fan.cpp b/presence/fan.cpp
new file mode 100644
index 0000000..71f17c7
--- /dev/null
+++ b/presence/fan.cpp
@@ -0,0 +1,71 @@
+/**
+ * Copyright © 2017 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 <map>
+#include <sdbusplus/message.hpp>
+#include <string>
+#include "fan.hpp"
+#include "sdbusplus.hpp"
+
+namespace phosphor
+{
+namespace fan
+{
+namespace presence
+{
+
+using namespace std::literals::string_literals;
+
+static const auto invNamespace = "/xyz/openbmc_project/inventory"s;
+static const auto itemIface = "xyz.openbmc_project.Inventory.Item"s;
+static const auto invMgrIface = "xyz.openbmc_project.Inventory.Manager"s;
+
+void setPresence(const Fan& fan, bool newState)
+{
+ using namespace sdbusplus::message;
+
+ using Properties = std::map<std::string, variant<std::string, bool>>;
+ using Interfaces = std::map<std::string, Properties>;
+
+ std::map<object_path, Interfaces> obj =
+ {{
+ std::get<1>(fan),
+ {{
+ itemIface,
+ {
+ {"Present"s, newState},
+ {"PrettyName"s, std::get<0>(fan)},
+ }
+ }}
+ }};
+
+ util::SDBusPlus::lookupAndCallMethod(
+ invNamespace,
+ invMgrIface,
+ "Notify"s,
+ obj);
+}
+
+bool getPresence(const Fan& fan)
+{
+ return util::SDBusPlus::getProperty<bool>(
+ std::get<1>(fan),
+ itemIface,
+ "Present"s);
+}
+
+} // namespace presence
+} // namespace fan
+} // namespace phosphor