From 3c6f29a0d0c89186e5f8fe1dfb12f76a6e448b28 Mon Sep 17 00:00:00 2001
From: Dhruvaraj Subhashchandran <dhruvaraj@in.ibm.com>
Date: Thu, 20 Apr 2017 09:47:28 -0500
Subject: Implement led assert and deassert based on faults

Change-Id: I28378b155da15282b1b5bf0403075b55bda5b70d
Signed-off-by: Dhruvaraj Subhashchandran <dhruvaraj@in.ibm.com>
---
 fault-monitor/Makefile.am           |  27 ++++-
 fault-monitor/fru-fault-monitor.cpp | 196 +++++++++++++++++++++++++++++++++++-
 2 files changed, 221 insertions(+), 2 deletions(-)

(limited to 'fault-monitor')

diff --git a/fault-monitor/Makefile.am b/fault-monitor/Makefile.am
index ba7603f..044b638 100644
--- a/fault-monitor/Makefile.am
+++ b/fault-monitor/Makefile.am
@@ -7,7 +7,16 @@ sbin_PROGRAMS = phosphor-fru-fault-monitor
 
 phosphor_fru_fault_monitor_SOURCES = \
                fru-fault-monitor.cpp \
-               monitor-main.cpp
+               monitor-main.cpp \
+               xyz/openbmc_project/Led/Mapper/error.cpp \
+               xyz/openbmc_project/Led/Fru/Monitor/error.cpp
+
+BUILT_SOURCES =  xyz/openbmc_project/Led/Mapper/error.hpp \
+                 xyz/openbmc_project/Led/Mapper/error.cpp \
+                 xyz/openbmc_project/Led/Fru/Monitor/error.hpp \
+                 xyz/openbmc_project/Led/Fru/Monitor/error.cpp
+
+CLEANFILES = ${BUILT_SOURCES}
 
 phosphor_fru_fault_monitor_LDFLAGS = $(SDBUSPLUS_LIBS) \
                                      $(PHOSPHOR_LOGGING_LIBS) \
@@ -15,3 +24,19 @@ phosphor_fru_fault_monitor_LDFLAGS = $(SDBUSPLUS_LIBS) \
 phosphor_fru_fault_monitor_CFLAGS =  $(SDBUSPLUS_CFLAGS) \
                                      $(PHOSPHOR_LOGGING_CFLAGS) \
                                      $(PHOSPHOR_DBUS_INTERFACES_CFLAGS)
+
+xyz/openbmc_project/Led/Mapper/error.hpp: ${top_srcdir}/xyz/openbmc_project/Led/Mapper.errors.yaml
+	@mkdir -p `dirname $@`
+	$(SDBUSPLUSPLUS) -r $(top_srcdir) error exception-header xyz.openbmc_project.Led.Mapper > $@
+
+xyz/openbmc_project/Led/Mapper/error.cpp: ${top_srcdir}/xyz/openbmc_project/Led/Mapper.errors.yaml
+	@mkdir -p `dirname $@`
+	$(SDBUSPLUSPLUS) -r $(top_srcdir) error exception-cpp xyz.openbmc_project.Led.Mapper > $@
+
+xyz/openbmc_project/Led/Fru/Monitor/error.hpp: ${top_srcdir}/xyz/openbmc_project/Led/Fru/Monitor.errors.yaml
+	@mkdir -p `dirname $@`
+	$(SDBUSPLUSPLUS) -r $(top_srcdir) error exception-header xyz.openbmc_project.Led.Fru.Monitor > $@
+
+xyz/openbmc_project/Led/Fru/Monitor/error.cpp: ${top_srcdir}/xyz/openbmc_project/Led/Fru/Monitor.errors.yaml
+	@mkdir -p `dirname $@`
+	$(SDBUSPLUSPLUS) -r $(top_srcdir) error exception-cpp xyz.openbmc_project.Led.Fru.Monitor > $@
diff --git a/fault-monitor/fru-fault-monitor.cpp b/fault-monitor/fru-fault-monitor.cpp
index 1213128..e21727b 100644
--- a/fault-monitor/fru-fault-monitor.cpp
+++ b/fault-monitor/fru-fault-monitor.cpp
@@ -1,4 +1,9 @@
+#include <phosphor-logging/elog.hpp>
+#include "xyz/openbmc_project/Led/Fru/Monitor/error.hpp"
+#include "xyz/openbmc_project/Led/Mapper/error.hpp"
+#include "elog-errors.hpp"
 #include "fru-fault-monitor.hpp"
+
 namespace phosphor
 {
 namespace led
@@ -10,10 +15,105 @@ namespace fault
 namespace monitor
 {
 
+using namespace phosphor::logging;
+
+constexpr auto MAPPER_BUSNAME   = "xyz.openbmc_project.ObjectMapper";
+constexpr auto MAPPER_OBJ_PATH  = "/xyz/openbmc_project/object_mapper";
+constexpr auto MAPPER_IFACE     = "xyz.openbmc_project.ObjectMapper";
+constexpr auto OBJMGR_IFACE     = "org.freedesktop.DBus.ObjectManager";
+constexpr auto LED_GROUPS       = "/xyz/openbmc_project/led/groups/";
+constexpr auto LOG_PATH         = "/xyz/openbmc_project/logging";
+
+using AssociationList = std::vector<std::tuple<
+                        std::string, std::string, std::string>>;
+using MethodErr  =
+    sdbusplus::xyz::openbmc_project::Led::Mapper::Error::MethodError;
+using ObjectNotFoundErr =
+    sdbusplus::xyz::openbmc_project::Led::Mapper::Error::ObjectNotFoundError;
+using AssociationRetrieveErr =
+    sdbusplus::xyz::openbmc_project::
+    Led::Fru::Monitor::Error::AssociationRetrieveError;
+using InventoryPathErr =
+    sdbusplus::xyz::openbmc_project::
+    Led::Fru::Monitor::Error::InventoryPathError;
+
+std::string getService(sdbusplus::bus::bus& bus,
+                       const std::string& path)
+{
+    auto mapper = bus.new_method_call(MAPPER_BUSNAME,
+                                      MAPPER_OBJ_PATH,
+                                      MAPPER_IFACE, "GetObject");
+    mapper.append(path.c_str(), std::vector<std::string>({OBJMGR_IFACE}));
+    auto mapperResponseMsg = bus.call(mapper);
+    if (mapperResponseMsg.is_method_error())
+    {
+        using namespace xyz::openbmc_project::Led::Mapper;
+        elog<MethodErr>(
+            MethodError::METHOD_NAME("GetObject"),
+            MethodError::PATH(path.c_str()),
+            MethodError::INTERFACE(
+                OBJMGR_IFACE));
+    }
+
+    std::map<std::string, std::vector<std::string>> mapperResponse;
+    mapperResponseMsg.read(mapperResponse);
+    if (mapperResponse.empty())
+    {
+        using namespace xyz::openbmc_project::Led::Mapper;
+        elog<ObjectNotFoundErr>(
+            ObjectNotFoundError::METHOD_NAME("GetObject"),
+            ObjectNotFoundError::PATH(path.c_str()),
+            ObjectNotFoundError::INTERFACE(
+                OBJMGR_IFACE));
+    }
+
+    return mapperResponse.cbegin()->first;
+}
+
 void action(sdbusplus::bus::bus& bus,
-            const std::string& unit,
+            const std::string& path,
             bool assert)
 {
+    std::string service;
+    try
+    {
+        service = getService(bus, LED_GROUPS);
+    }
+    catch (MethodErr& e)
+    {
+        commit<MethodErr>();
+        return;
+    }
+    catch (ObjectNotFoundErr& e)
+    {
+        commit<ObjectNotFoundErr>();
+        return;
+    }
+
+    auto pos = path.rfind("/");
+    if (pos == std::string::npos)
+    {
+        using namespace xyz::openbmc_project::Led::Fru::Monitor;
+        report<InventoryPathErr>(
+            InventoryPathError::PATH(
+                path.c_str()));
+        return;
+    }
+    auto unit = path.substr(pos + 1);
+
+    std::string ledPath = LED_GROUPS +
+                          unit + '_' + LED_FAULT;
+
+    auto method =  bus.new_method_call(service.c_str(),
+                                       ledPath.c_str(),
+                                       "org.freedesktop.DBus.Properties",
+                                       "Set");
+    method.append("xyz.openbmc_project.Led.Group");
+    method.append("Asserted");
+
+    method.append(sdbusplus::message::variant<bool>(assert));
+    bus.call_noreply(method);
+
     return;
 }
 
@@ -21,6 +121,72 @@ int Add::created(sd_bus_message* msg,
                  void* data,
                  sd_bus_error* retError)
 {
+    auto m = sdbusplus::message::message(msg);
+    auto bus = m.get_bus();
+
+    sdbusplus::message::object_path obPath;
+    m.read(obPath);
+    std::string objectPath(std::move(obPath));
+
+    std::size_t found = objectPath.find(ELOG_ENTRY);
+    if (found == std::string::npos)
+    {
+        //Not a new error entry skip
+        return 0;
+    }
+
+    std::string service;
+    try
+    {
+        service = getService(bus, LOG_PATH);
+    }
+    catch (MethodErr& e)
+    {
+        commit<MethodErr>();
+        return 0;
+    }
+    catch (ObjectNotFoundErr& e)
+    {
+        commit<ObjectNotFoundErr>();
+        return 0;
+    }
+
+    auto method =  bus.new_method_call(service.c_str(), objectPath.c_str(),
+                                       "org.freedesktop.DBus.Properties",
+                                       "Get");
+
+    method.append("org.openbmc.Associations");
+    method.append("associations");
+    auto reply = bus.call(method);
+    if (reply.is_method_error())
+    {
+        using namespace xyz::openbmc_project::Led::Fru::Monitor;
+        report<AssociationRetrieveErr>(
+            AssociationRetrieveError::ELOG_ENTRY_PATH(
+                objectPath.c_str()));
+        return 0;
+    }
+
+    sdbusplus::message::variant<AssociationList> assoc;
+    reply.read(assoc);
+
+    auto assocs =
+        sdbusplus::message::variant_ns::get<AssociationList>(assoc);
+    if (assocs.empty())
+    {
+        //No associations skip
+        return 0;
+    }
+
+    for (const auto& item : assocs)
+    {
+        if (std::get<1>(item).compare(CALLOUT_REV_ASSOCIATION) == 0)
+        {
+            action(bus, std::get<2>(item), true);
+            static_cast<Add*>(data)->removeWatches.emplace_back(
+                std::make_unique<Remove>(bus, std::get<2>(item)));
+        }
+    }
     return 0;
 }
 
@@ -28,6 +194,34 @@ int Remove::removed(sd_bus_message* msg,
                     void* data,
                     sd_bus_error* retError)
 {
+    auto m = sdbusplus::message::message(msg);
+    auto bus = m.get_bus();
+    std::string assoc;
+    m.read(assoc);
+
+    if (assoc.compare("org.openbmc.Association"))
+    {
+        //Skip if not about association
+        return 0;
+    }
+
+    std::map<std::string, std::vector<std::string>> endPoints;
+    m.read(endPoints);
+    auto it = endPoints.find("endpoints");
+
+    if (it == endPoints.end())
+    {
+        //No end points,skip
+        return 0;
+    }
+
+    if (!((*it).second.empty()))
+    {
+        //Skip, end points are not empty
+        return 0;
+    }
+
+    action(bus, static_cast<Remove*>(data)->inventoryPath, false);
     return 0;
 }
 
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