Implement PSU Power Sensor
Implement Power Supply Input Power Sensor.
Tested By:
With the related change in entity-manager, after run psusensor in
BMC console, xyz.openbmc_project.PSUSensor has been created and
PSU pin dbus interface has been created with correct Thresholds
and value. Ipmitool sensor list can show PSU pin sensor.
Change-Id: Ib057a9ecca7bf317eb8d98af1ddb8be39841a54f
Signed-off-by: Cheng C Yang <cheng.c.yang@linux.intel.com>
diff --git a/src/PSUSensor.cpp b/src/PSUSensor.cpp
new file mode 100644
index 0000000..c71b84d
--- /dev/null
+++ b/src/PSUSensor.cpp
@@ -0,0 +1,147 @@
+/*
+// 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.
+*/
+
+#include <unistd.h>
+
+#include <PSUSensor.hpp>
+#include <boost/algorithm/string/predicate.hpp>
+#include <boost/algorithm/string/replace.hpp>
+#include <boost/date_time/posix_time/posix_time.hpp>
+#include <iostream>
+#include <limits>
+#include <sdbusplus/asio/connection.hpp>
+#include <sdbusplus/asio/object_server.hpp>
+#include <string>
+
+PSUSensor::PSUSensor(const std::string& path, const std::string& objectType,
+ sdbusplus::asio::object_server& objectServer,
+ std::shared_ptr<sdbusplus::asio::connection>& conn,
+ boost::asio::io_service& io, const std::string& sensorName,
+ std::vector<thresholds::Threshold>&& _thresholds,
+ const std::string& sensorConfiguration,
+ std::string& sensorTypeName, unsigned int factor,
+ double max, double min) :
+ Sensor(boost::replace_all_copy(sensorName, " ", "_"), path,
+ std::move(_thresholds), sensorConfiguration, objectType, max, min),
+ objServer(objectServer), inputDev(io, open(path.c_str(), O_RDONLY)),
+ waitTimer(io), errCount(0), sensorFactor(factor)
+{
+ sensorInterface = objectServer.add_interface(
+ "/xyz/openbmc_project/sensors/" + sensorTypeName + name,
+ "xyz.openbmc_project.Sensor.Value");
+
+ if (thresholds::hasWarningInterface(thresholds))
+ {
+ thresholdInterfaceWarning = objectServer.add_interface(
+ "/xyz/openbmc_project/sensors/" + sensorTypeName + name,
+ "xyz.openbmc_project.Sensor.Threshold.Warning");
+ }
+ if (thresholds::hasCriticalInterface(thresholds))
+ {
+ thresholdInterfaceCritical = objectServer.add_interface(
+ "/xyz/openbmc_project/sensors/" + sensorTypeName + name,
+ "xyz.openbmc_project.Sensor.Threshold.Critical");
+ }
+ setInitialProperties(conn);
+ setupRead();
+}
+
+PSUSensor::~PSUSensor()
+{
+ inputDev.close();
+ waitTimer.cancel();
+ objServer.remove_interface(sensorInterface);
+ objServer.remove_interface(thresholdInterfaceWarning);
+ objServer.remove_interface(thresholdInterfaceCritical);
+}
+
+void PSUSensor::setupRead(void)
+{
+ boost::asio::async_read_until(
+ inputDev, readBuf, '\n',
+ [&](const boost::system::error_code& ec,
+ std::size_t /*bytes_transfered*/) { handleResponse(ec); });
+}
+
+void PSUSensor::handleResponse(const boost::system::error_code& err)
+{
+ if (err == boost::system::errc::bad_file_descriptor)
+ {
+ return;
+ }
+ std::istream responseStream(&readBuf);
+ if (!err)
+ {
+ std::string response;
+ try
+ {
+ std::getline(responseStream, response);
+ float nvalue = std::stof(response);
+ responseStream.clear();
+ nvalue /= sensorFactor;
+ if (overridenState)
+ {
+ nvalue = overriddenValue;
+ }
+ if (nvalue != value)
+ {
+ updateValue(nvalue);
+ }
+ errCount = 0;
+ }
+ catch (const std::invalid_argument&)
+ {
+ errCount++;
+ }
+ }
+ else
+ {
+ errCount++;
+ }
+
+ if (errCount >= warnAfterErrorCount)
+ {
+ if (errCount == warnAfterErrorCount)
+ {
+ std::cerr << "Failure to read sensor " << name << " at " << path
+ << "\n";
+ }
+ updateValue(0);
+ errCount++;
+ }
+
+ responseStream.clear();
+ inputDev.close();
+ int fd = open(path.c_str(), O_RDONLY);
+ if (fd <= 0)
+ {
+ return;
+ }
+ inputDev.assign(fd);
+ waitTimer.expires_from_now(boost::posix_time::milliseconds(sensorPollMs));
+ waitTimer.async_wait([&](const boost::system::error_code& ec) {
+ if (ec == boost::asio::error::operation_aborted)
+ {
+ return;
+ }
+ setupRead();
+ });
+}
+
+void PSUSensor::checkThresholds(void)
+{
+ thresholds::checkThresholds(this);
+}