presence: Add any of redundancy policy
Add a bitwise logical or redundancy policy implementation
(fan is present if any sensor indicates as such).
Change-Id: I1d161478a4a6fe9d5690a385703e41c6fff9c81c
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/presence/anyof.cpp b/presence/anyof.cpp
new file mode 100644
index 0000000..4dbf356
--- /dev/null
+++ b/presence/anyof.cpp
@@ -0,0 +1,78 @@
+/**
+ * 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 <algorithm>
+#include <phosphor-logging/log.hpp>
+#include "anyof.hpp"
+#include "fan.hpp"
+#include "psensor.hpp"
+
+namespace phosphor
+{
+namespace fan
+{
+namespace presence
+{
+AnyOf::AnyOf(
+ const Fan& fan,
+ const std::vector<std::reference_wrapper<PresenceSensor>>& s)
+ : RedundancyPolicy(fan),
+ state()
+{
+ for (auto& sensor: s)
+ {
+ state.emplace_back(sensor, false);
+ }
+}
+
+void AnyOf::stateChanged(bool present, PresenceSensor& sensor)
+{
+ // Find the sensor that changed state.
+ auto sit = std::find_if(
+ state.begin(),
+ state.end(),
+ [&sensor](const auto& s){ return std::get<0>(s).get() == sensor; });
+ if (sit != state.end())
+ {
+ // Update our cache of the sensors state and re-evaluate.
+ std::get<bool>(*sit) = present;
+ auto newState = std::any_of(
+ state.begin(),
+ state.end(),
+ [](const auto& s){ return std::get<bool>(s); });
+ setPresence(fan, newState);
+ }
+}
+
+void AnyOf::monitor()
+{
+ // Start all sensors in the anyof redundancy set.
+
+ for (auto& s: state)
+ {
+ auto &sensor = std::get<0>(s);
+ std::get<bool>(s) = sensor.get().start();
+ }
+
+ auto present = std::any_of(
+ state.begin(),
+ state.end(),
+ [](const auto& s){ return std::get<bool>(s); });
+ setPresence(fan, present);
+}
+
+} // namespace presence
+} // namespace fan
+} // namespace phosphor