Add Fan Redundancy Support
This adds fan redundancy support to passive sensors.
If there are redundancy interfaces on dbus, we'll fail
a sensor if the status is set to failed.
Tested: Set Redundancy to Failed On Dbus, saw all fans
in collection boost. Then restarted swampd, came up
and still boosted. Set redundancy OK, and they all slowed
down.
Change-Id: I8879bef1471bbc168435d6b22dd20006b9dca133
Signed-off-by: James Feist <james.feist@linux.intel.com>
diff --git a/dbus/dbuspassiveredundancy.hpp b/dbus/dbuspassiveredundancy.hpp
new file mode 100644
index 0000000..3d7e2a6
--- /dev/null
+++ b/dbus/dbuspassiveredundancy.hpp
@@ -0,0 +1,43 @@
+/*
+// Copyright (c) 2019 Intel 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.
+*/
+
+#pragma once
+
+#include <sdbusplus/bus.hpp>
+#include <sdbusplus/bus/match.hpp>
+#include <set>
+
+/*
+ * DbusPassiveRedundancy monitors the fan redundancy interface via dbus match
+ * for changes. When the "Status" property changes to Failed, all sensors in
+ * the interface's "Collection" property are added to the failed member. This
+ * set can then be queried by a sensor to see if they are part of a failed
+ * redundancy collection. When this happens, they get marked as failed.
+ */
+
+class DbusPassiveRedundancy
+{
+ public:
+ DbusPassiveRedundancy(sdbusplus::bus::bus& bus);
+ const std::set<std::string>& getFailed(void);
+
+ private:
+ void populateFailures(void);
+
+ sdbusplus::bus::match::match match;
+ std::set<std::string> failed;
+ sdbusplus::bus::bus& passiveBus;
+};