Support numeric effecters in dbus-to-host-effecter

Adds support of the numeric effecter PDR (section `28.11 Numeric
Effecter PDR` DSP0248 V1.3.0) type in dbus-to-host-effecter handler.
This handler will be applied for all PLDM termini but not only host.
The setting for one numeric effecter of one device can be:
{
    "mctp_eid": 20,
    "effecter_info": {
        "effecterPdrType": 9,
        "effecterID": 2,
        "entityType": 32903,
        "entityInstance": 2,
        "containerID": 2,
        "compositeEffecterCount": 1,
        "checkHostState": false
    },
    "effecters": [
        {
            "dbus_info": {
                "object_path": "/xyz/openbmc_project/sensors/power/A",
                "interface": "xyz.openbmc_project.Sensor.Value",
                "property_name": "Value",
                "property_type": "double"
            },
            "effecterDataSize": 5,
            "resolution": 1,
            "offset": 0,
            "unitModifier": 0
        }
    ]
}

Where:
+ effecterPdrType to difference state/numeric effecter type. Default
is state effecter.
+ effecterID should be effecter ID and should not empty.
+ checkHostState can be set to false to bypass checking host state.
+ effecterDataSize, resolution, offset, unitModifier are from numeric
effecter PDR (section `28.11 Numeric Effecter PDR` DSP0248 V1.3.0)

Signed-off-by: Thu Nguyen <thu@os.amperecomputing.com>
Change-Id: I438d7f204643edd4066e8a6ba28d53a97503fc4b
diff --git a/host-bmc/dbus_to_terminus_effecters.cpp b/host-bmc/dbus_to_terminus_effecters.cpp
new file mode 100644
index 0000000..f11dc2f
--- /dev/null
+++ b/host-bmc/dbus_to_terminus_effecters.cpp
@@ -0,0 +1,683 @@
+#include "dbus_to_terminus_effecters.hpp"
+
+#include <libpldm/pdr.h>
+#include <libpldm/platform.h>
+
+#include <phosphor-logging/lg2.hpp>
+#include <xyz/openbmc_project/Common/error.hpp>
+#include <xyz/openbmc_project/State/Boot/Progress/client.hpp>
+#include <xyz/openbmc_project/State/OperatingSystem/Status/server.hpp>
+
+#include <fstream>
+
+PHOSPHOR_LOG2_USING;
+
+using namespace pldm::utils;
+
+namespace pldm
+{
+namespace host_effecters
+{
+using InternalFailure =
+    sdbusplus::xyz::openbmc_project::Common::Error::InternalFailure;
+
+constexpr auto hostEffecterJson = "dbus_to_terminus_effecter.json";
+
+void HostEffecterParser::populatePropVals(
+    const Json& dBusValues, std::vector<PropertyValue>& propertyValues,
+    const std::string& propertyType)
+
+{
+    for (const auto& elem : dBusValues)
+    {
+        auto value = jsonEntryToDbusVal(propertyType, elem);
+        propertyValues.emplace_back(value);
+    }
+}
+
+void HostEffecterParser::parseEffecterJson(const std::string& jsonPath)
+{
+    fs::path jsonDir(jsonPath);
+    if (!fs::exists(jsonDir) || fs::is_empty(jsonDir))
+    {
+        error("Effecter json file for remote terminus '{PATH}' does not exist.",
+              "PATH", jsonPath);
+        return;
+    }
+
+    fs::path jsonFilePath = jsonDir / hostEffecterJson;
+    if (!fs::exists(jsonFilePath))
+    {
+        error("Json at path '{PATH}' does not exist.", "PATH", jsonFilePath);
+        throw InternalFailure();
+    }
+
+    std::ifstream jsonFile(jsonFilePath);
+    auto data = Json::parse(jsonFile, nullptr, false);
+    if (data.is_discarded())
+    {
+        error("Failed to parse json file {PATH}", "PATH", jsonFilePath);
+        throw InternalFailure();
+    }
+    const Json empty{};
+    const std::vector<Json> emptyList{};
+
+    auto entries = data.value("entries", emptyList);
+    for (const auto& entry : entries)
+    {
+        EffecterInfo effecterInfo;
+        effecterInfo.mctpEid = entry.value("mctp_eid", 0xFF);
+        auto jsonEffecterInfo = entry.value("effecter_info", empty);
+        auto effecterId =
+            jsonEffecterInfo.value("effecterID", PLDM_INVALID_EFFECTER_ID);
+        /* default as PLDM_STATE_EFFECTER_PDR */
+        auto effecterPdrType =
+            jsonEffecterInfo.value("effecterPdrType", PLDM_STATE_EFFECTER_PDR);
+        if (effecterPdrType != PLDM_STATE_EFFECTER_PDR &&
+            effecterPdrType != PLDM_NUMERIC_EFFECTER_PDR)
+        {
+            error(
+                "Effecter PDRType not supported {TYPE} of effecterID '{EFFECTERID}'",
+                "TYPE", effecterPdrType, "EFFECTERID", effecterId);
+            continue;
+        }
+        effecterInfo.effecterPdrType = effecterPdrType;
+        effecterInfo.containerId = jsonEffecterInfo.value("containerID", 0);
+        effecterInfo.entityType = jsonEffecterInfo.value("entityType", 0);
+        effecterInfo.entityInstance =
+            jsonEffecterInfo.value("entityInstance", 0);
+        effecterInfo.compEffecterCnt =
+            jsonEffecterInfo.value("compositeEffecterCount", 0);
+        effecterInfo.checkHostState =
+            jsonEffecterInfo.value("checkHostState", true);
+        auto effecters = entry.value("effecters", emptyList);
+
+        if (effecterPdrType == PLDM_NUMERIC_EFFECTER_PDR)
+        {
+            for (const auto& effecter : effecters)
+            {
+                DBusNumericEffecterMapping dbusInfo{};
+                auto jsonDbusInfo = effecter.value("dbus_info", empty);
+                dbusInfo.dataSize = effecter.value("effecterDataSize", 0);
+                dbusInfo.unitModifier = effecter.value("unitModifier", 0);
+                dbusInfo.resolution = effecter.value("resolution", 1);
+                dbusInfo.offset = effecter.value("offset", 0);
+                dbusInfo.dbusMap.objectPath =
+                    jsonDbusInfo.value("object_path", "");
+                dbusInfo.dbusMap.interface =
+                    jsonDbusInfo.value("interface", "");
+                dbusInfo.dbusMap.propertyName =
+                    jsonDbusInfo.value("property_name", "");
+                dbusInfo.dbusMap.propertyType =
+                    jsonDbusInfo.value("property_type", "");
+                /**
+                 * Only support these property type for Numeric Effecter D-Bus
+                 * property:
+                 * "uint8_t", "int16_t",  "uint16_t", "int32_t", "uint32_t",
+                 * "int64_t", "uint64_t", "double"
+                 */
+                if (!dbusValueNumericTypeNames.contains(
+                        dbusInfo.dbusMap.propertyType))
+                {
+                    lg2::error(
+                        "Invalid PropertyType {TYPE} of object path {PATH} property name {NAME}",
+                        "TYPE", dbusInfo.dbusMap.propertyType, "PATH",
+                        dbusInfo.dbusMap.objectPath, "NAME",
+                        dbusInfo.dbusMap.propertyName);
+                    continue;
+                }
+
+                dbusInfo.propertyValue =
+                    std::numeric_limits<double>::quiet_NaN();
+                auto effecterInfoIndex = hostEffecterInfo.size();
+                auto dbusInfoIndex = effecterInfo.dbusInfo.size();
+                createHostEffecterMatch(
+                    dbusInfo.dbusMap.objectPath, dbusInfo.dbusMap.interface,
+                    effecterInfoIndex, dbusInfoIndex, effecterId);
+                effecterInfo.dbusNumericEffecterInfo.emplace_back(
+                    std::move(dbusInfo));
+            }
+            hostEffecterInfo.emplace_back(std::move(effecterInfo));
+            continue;
+        }
+
+        for (const auto& effecter : effecters)
+        {
+            DBusEffecterMapping dbusInfo{};
+            auto jsonDbusInfo = effecter.value("dbus_info", empty);
+            dbusInfo.dbusMap.objectPath = jsonDbusInfo.value("object_path", "");
+            dbusInfo.dbusMap.interface = jsonDbusInfo.value("interface", "");
+            dbusInfo.dbusMap.propertyName =
+                jsonDbusInfo.value("property_name", "");
+            dbusInfo.dbusMap.propertyType =
+                jsonDbusInfo.value("property_type", "");
+            Json propertyValues = jsonDbusInfo["property_values"];
+
+            populatePropVals(propertyValues, dbusInfo.propertyValues,
+                             dbusInfo.dbusMap.propertyType);
+
+            const std::vector<uint8_t> emptyStates{};
+            auto state = effecter.value("state", empty);
+            dbusInfo.state.stateSetId = state.value("id", 0);
+            auto states = state.value("state_values", emptyStates);
+            if (dbusInfo.propertyValues.size() != states.size())
+            {
+                error(
+                    "Number of states do not match with number of D-Bus property values in the json. Object path at '{PATH}' and property '{PROPERTY}' will not be monitored",
+                    "PATH", dbusInfo.dbusMap.objectPath, "PROPERTY",
+                    dbusInfo.dbusMap.propertyName);
+                continue;
+            }
+            for (const auto& s : states)
+            {
+                dbusInfo.state.states.emplace_back(s);
+            }
+
+            auto effecterInfoIndex = hostEffecterInfo.size();
+            auto dbusInfoIndex = effecterInfo.dbusInfo.size();
+            createHostEffecterMatch(
+                dbusInfo.dbusMap.objectPath, dbusInfo.dbusMap.interface,
+                effecterInfoIndex, dbusInfoIndex, effecterId);
+            effecterInfo.dbusInfo.emplace_back(std::move(dbusInfo));
+        }
+        hostEffecterInfo.emplace_back(std::move(effecterInfo));
+    }
+}
+
+bool HostEffecterParser::isHostOn(void)
+{
+    using BootProgress =
+        sdbusplus::client::xyz::openbmc_project::state::boot::Progress<>;
+    constexpr auto hostStatePath = "/xyz/openbmc_project/state/host0";
+    try
+    {
+        auto propVal = dbusHandler->getDbusPropertyVariant(
+            hostStatePath, "BootProgress", BootProgress::interface);
+
+        using Stages = BootProgress::ProgressStages;
+        auto currHostState = sdbusplus::message::convert_from_string<Stages>(
+                                 std::get<std::string>(propVal))
+                                 .value();
+
+        if (currHostState != Stages::SystemInitComplete &&
+            currHostState != Stages::OSRunning &&
+            currHostState != Stages::SystemSetup &&
+            currHostState != Stages::OEM)
+        {
+            info(
+                "Remote terminus is not up/active, current remote terminus state is: '{CURRENT_HOST_STATE}'",
+                "CURRENT_HOST_STATE", currHostState);
+            return false;
+        }
+    }
+    catch (const sdbusplus::exception_t& e)
+    {
+        error(
+            "Error in getting current remote terminus state. Will still continue to set the remote terminus effecter, error - {ERROR}",
+            "ERROR", e);
+        return false;
+    }
+
+    return true;
+}
+
+void HostEffecterParser::processHostEffecterChangeNotification(
+    const DbusChgHostEffecterProps& chProperties, size_t effecterInfoIndex,
+    size_t dbusInfoIndex, uint16_t effecterId)
+{
+    const auto& pdrType = hostEffecterInfo[effecterInfoIndex].effecterPdrType;
+    if (pdrType == PLDM_NUMERIC_EFFECTER_PDR)
+    {
+        processTerminusNumericEffecterChangeNotification(
+            chProperties, effecterInfoIndex, dbusInfoIndex, effecterId);
+        return;
+    }
+    const auto& propertyName = hostEffecterInfo[effecterInfoIndex]
+                                   .dbusInfo[dbusInfoIndex]
+                                   .dbusMap.propertyName;
+
+    const auto& it = chProperties.find(propertyName);
+
+    if (it == chProperties.end())
+    {
+        return;
+    }
+
+    if (effecterId == PLDM_INVALID_EFFECTER_ID)
+    {
+        constexpr auto localOrRemote = false;
+        effecterId = findStateEffecterId(
+            pdrRepo, hostEffecterInfo[effecterInfoIndex].entityType,
+            hostEffecterInfo[effecterInfoIndex].entityInstance,
+            hostEffecterInfo[effecterInfoIndex].containerId,
+            hostEffecterInfo[effecterInfoIndex]
+                .dbusInfo[dbusInfoIndex]
+                .state.stateSetId,
+            localOrRemote);
+        if (effecterId == PLDM_INVALID_EFFECTER_ID)
+        {
+            error(
+                "Effecter ID '{EFFECTERID}' of entity type '{TYPE}', entityInstance '{INSTANCE}' and containerID '{CONTAINER_ID}' not found in pdr repo",
+                "EFFECTERID", effecterId, "TYPE",
+                hostEffecterInfo[effecterInfoIndex].entityType, "INSTANCE",
+                hostEffecterInfo[effecterInfoIndex].entityInstance,
+                "CONTAINER_ID",
+                hostEffecterInfo[effecterInfoIndex].containerId);
+            return;
+        }
+    }
+
+    if (!isHostOn())
+    {
+        return;
+    }
+
+    uint8_t newState{};
+    try
+    {
+        newState =
+            findNewStateValue(effecterInfoIndex, dbusInfoIndex, it->second);
+    }
+    catch (const std::out_of_range& e)
+    {
+        error("Failed to find new state '{NEW_STATE}' in json, error - {ERROR}",
+              "ERROR", e, "NEW_STATE", newState);
+        return;
+    }
+
+    std::vector<set_effecter_state_field> stateField;
+    for (uint8_t i = 0; i < hostEffecterInfo[effecterInfoIndex].compEffecterCnt;
+         i++)
+    {
+        if (i == dbusInfoIndex)
+        {
+            stateField.push_back({PLDM_REQUEST_SET, newState});
+        }
+        else
+        {
+            stateField.push_back({PLDM_NO_CHANGE, 0});
+        }
+    }
+    int rc{};
+    try
+    {
+        rc = setHostStateEffecter(effecterInfoIndex, stateField, effecterId);
+    }
+    catch (const std::runtime_error& e)
+    {
+        error(
+            "Failed to set remote terminus state effecter for effecter ID '{EFFECTERID}', error - {ERROR}",
+            "ERROR", e, "EFFECTERID", effecterId);
+        return;
+    }
+    if (rc != PLDM_SUCCESS)
+    {
+        error(
+            "Failed to set the remote terminus state effecter for effecter ID '{EFFECTERID}', response code '{RC}'",
+            "EFFECTERID", effecterId, "RC", rc);
+    }
+}
+
+double HostEffecterParser::adjustValue(double value, double offset,
+                                       double resolution, int8_t modify)
+{
+    double unitModifier = std::pow(10, signed(modify));
+    return std::round((value - offset) * resolution / unitModifier);
+}
+
+void HostEffecterParser::processTerminusNumericEffecterChangeNotification(
+    const DbusChgHostEffecterProps& chProperties, size_t effecterInfoIndex,
+    size_t dbusInfoIndex, uint16_t effecterId)
+{
+    const auto& checkHost = hostEffecterInfo[effecterInfoIndex].checkHostState;
+    const auto& propValues = hostEffecterInfo[effecterInfoIndex]
+                                 .dbusNumericEffecterInfo[dbusInfoIndex];
+    const auto& propertyName = propValues.dbusMap.propertyName;
+    const auto& propertyType = propValues.dbusMap.propertyType;
+
+    if (effecterId == PLDM_INVALID_EFFECTER_ID)
+    {
+        lg2::error(
+            "Dbus to PLDM Numeric Effecter setting requires valid effecter ID. Invalid effecter ID {EFFECTER_ID}",
+            "EFFECTER_ID", effecterId);
+    }
+
+    if (!dbusValueNumericTypeNames.contains(propertyType))
+    {
+        lg2::error(
+            "DBus Value to PLDM Numeric Effecter setting only supports D-Bus Numeric data type. Invalid type {TYPE}",
+            "TYPE", propertyType);
+        return;
+    }
+
+    const auto& it = chProperties.find(propertyName);
+
+    if (it == chProperties.end())
+    {
+        return;
+    }
+
+    double val = std::numeric_limits<double>::quiet_NaN();
+    if (!pldm::utils::dbusPropValuesToDouble(propertyType, it->second, &val))
+    {
+        lg2::error(
+            "DBus Value to PLDM Numeric Effecter setting only supports Numeric D-Bus data type. Invalid type {TYPE}",
+            "TYPE", propertyType);
+        return;
+    }
+
+    /* Update the current value of D-Bus interface*/
+    if (!std::isnan(val) && std::isnan(propValues.propertyValue))
+    {
+        hostEffecterInfo[effecterInfoIndex]
+            .dbusNumericEffecterInfo[dbusInfoIndex]
+            .propertyValue = val;
+        return;
+    }
+
+    /* Bypass the setting when the current value is NA or settting value is NA*/
+    if (std::isnan(propValues.propertyValue) || std::isnan(val))
+    {
+        return;
+    }
+
+    /* Setting value equals the D-Bus value which is real value of effecter */
+    if (val == propValues.propertyValue)
+    {
+        return;
+    }
+
+    double rawValue = adjustValue(val, propValues.offset, propValues.resolution,
+                                  propValues.unitModifier);
+
+    if (checkHost && !isHostOn())
+    {
+        return;
+    }
+
+    try
+    {
+        auto rc = setTerminusNumericEffecter(effecterInfoIndex, effecterId,
+                                             propValues.dataSize, rawValue);
+        if (rc)
+        {
+            error(
+                "Could not set the numeric effecter ID '{EFFECTERID}' return code '{RC}'",
+                "EFFECTERID", effecterId, "RC", rc);
+            return;
+        }
+    }
+    catch (const std::runtime_error& e)
+    {
+        error("Could not set numeric effecter ID= '{EFFECTERID}'", "EFFECTERID",
+              effecterId);
+        return;
+    }
+
+    hostEffecterInfo[effecterInfoIndex]
+        .dbusNumericEffecterInfo[dbusInfoIndex]
+        .propertyValue = val;
+
+    return;
+}
+
+uint8_t HostEffecterParser::findNewStateValue(
+    size_t effecterInfoIndex, size_t dbusInfoIndex,
+    const PropertyValue& propertyValue)
+{
+    const auto& propValues = hostEffecterInfo[effecterInfoIndex]
+                                 .dbusInfo[dbusInfoIndex]
+                                 .propertyValues;
+    auto it = std::find(propValues.begin(), propValues.end(), propertyValue);
+    uint8_t newState{};
+    if (it != propValues.end())
+    {
+        auto index = std::distance(propValues.begin(), it);
+        newState = hostEffecterInfo[effecterInfoIndex]
+                       .dbusInfo[dbusInfoIndex]
+                       .state.states[index];
+    }
+    else
+    {
+        throw std::out_of_range("new state not found in json");
+    }
+    return newState;
+}
+
+size_t getEffecterDataSize(uint8_t effecterDataSize)
+{
+    switch (effecterDataSize)
+    {
+        case PLDM_EFFECTER_DATA_SIZE_UINT8:
+            return sizeof(uint8_t);
+        case PLDM_EFFECTER_DATA_SIZE_SINT8:
+            return sizeof(int8_t);
+        case PLDM_EFFECTER_DATA_SIZE_UINT16:
+            return sizeof(uint16_t);
+        case PLDM_EFFECTER_DATA_SIZE_SINT16:
+            return sizeof(int16_t);
+        case PLDM_EFFECTER_DATA_SIZE_UINT32:
+            return sizeof(uint32_t);
+        case PLDM_EFFECTER_DATA_SIZE_SINT32:
+            return sizeof(int32_t);
+        default:
+            return 0;
+    }
+}
+
+int HostEffecterParser::setTerminusNumericEffecter(
+    size_t effecterInfoIndex, uint16_t effecterId, uint8_t dataSize,
+    double rawValue)
+{
+    uint8_t& mctpEid = hostEffecterInfo[effecterInfoIndex].mctpEid;
+    auto instanceId = instanceIdDb->next(mctpEid);
+    int rc = PLDM_ERROR;
+    std::vector<uint8_t> requestMsg;
+
+    /**
+     * PLDM_SET_NUMERIC_EFFECTER_VALUE_MIN_REQ_BYTES = 4. It includes the 1 byte
+     * value for effecterValue as `Table 48 - SetNumericEffecterValue command
+     * format` DSP0248 V1.3.0 So the payload_length of `SetNumericEffecterValue`
+     * request message will be payload_length =
+     * PLDM_SET_NUMERIC_EFFECTER_VALUE_MIN_REQ_BYTES - 1 + sizeof(dataType)
+     */
+    size_t payload_length = PLDM_SET_NUMERIC_EFFECTER_VALUE_MIN_REQ_BYTES - 1 +
+                            getEffecterDataSize(dataSize);
+    requestMsg.resize(sizeof(pldm_msg_hdr) + payload_length);
+    auto request = reinterpret_cast<pldm_msg*>(requestMsg.data());
+    switch (dataSize)
+    {
+        case PLDM_EFFECTER_DATA_SIZE_UINT8:
+        {
+            auto value_uint8 = (uint8_t)rawValue;
+            rc = encode_set_numeric_effecter_value_req(
+                instanceId, effecterId, dataSize,
+                reinterpret_cast<uint8_t*>(&value_uint8), request,
+                payload_length);
+            break;
+        }
+        case PLDM_EFFECTER_DATA_SIZE_SINT8:
+        {
+            auto value_int8 = (int8_t)rawValue;
+            rc = encode_set_numeric_effecter_value_req(
+                instanceId, effecterId, dataSize,
+                reinterpret_cast<uint8_t*>(&value_int8), request,
+                payload_length);
+            break;
+        }
+        case PLDM_EFFECTER_DATA_SIZE_UINT16:
+        {
+            auto value_uint16 = (uint16_t)rawValue;
+            rc = encode_set_numeric_effecter_value_req(
+                instanceId, effecterId, dataSize,
+                reinterpret_cast<uint8_t*>(&value_uint16), request,
+                payload_length);
+            break;
+        }
+        case PLDM_EFFECTER_DATA_SIZE_SINT16:
+        {
+            auto value_int16 = (int16_t)rawValue;
+            rc = encode_set_numeric_effecter_value_req(
+                instanceId, effecterId, dataSize,
+                reinterpret_cast<uint8_t*>(&value_int16), request,
+                payload_length);
+            break;
+        }
+        case PLDM_EFFECTER_DATA_SIZE_UINT32:
+        {
+            auto value_uint32 = (uint32_t)rawValue;
+            rc = encode_set_numeric_effecter_value_req(
+                instanceId, effecterId, dataSize,
+                reinterpret_cast<uint8_t*>(&value_uint32), request,
+                payload_length);
+            break;
+        }
+        case PLDM_EFFECTER_DATA_SIZE_SINT32:
+        {
+            auto value_int32 = (int32_t)rawValue;
+            rc = encode_set_numeric_effecter_value_req(
+                instanceId, effecterId, dataSize,
+                reinterpret_cast<uint8_t*>(&value_int32), request,
+                payload_length);
+            break;
+        }
+        default:
+            break;
+    }
+
+    if (rc)
+    {
+        error(
+            "Failed to encode set numeric effecter request message for effecter ID '{EFFECTERID}' and instanceID '{INSTANCE}' with error code '{RC}'",
+            "EFFECTERID", effecterId, "INSTANCE", instanceId, "RC", lg2::hex,
+            rc);
+
+        instanceIdDb->free(mctpEid, instanceId);
+        return rc;
+    }
+
+    auto setNumericEffecterRespHandler = [effecterId](mctp_eid_t /*eid*/,
+                                                      const pldm_msg* response,
+                                                      size_t respMsgLen) {
+        if (response == nullptr || !respMsgLen)
+        {
+            error(
+                "Failed to receive response for setNumericEffecterValue command");
+            return;
+        }
+        uint8_t completionCode{};
+        auto rc = decode_set_numeric_effecter_value_resp(response, respMsgLen,
+                                                         &completionCode);
+
+        if (rc)
+        {
+            error(
+                "Failed to decode set numeric effecter response message for effecter ID '{EFFECTERID}' with error code '{RC}'",
+                "EFFECTERID", effecterId, "RC", lg2::hex, rc);
+        }
+        if (completionCode)
+        {
+            error(
+                "Failed to set numeric effecter for effecter ID '{EFFECTERID}' with complete code '{CC}'",
+                "EFFECTERID", effecterId, "CC", lg2::hex, completionCode);
+        }
+    };
+
+    rc = handler->registerRequest(
+        mctpEid, instanceId, PLDM_PLATFORM, PLDM_SET_NUMERIC_EFFECTER_VALUE,
+        std::move(requestMsg), std::move(setNumericEffecterRespHandler));
+    if (rc)
+    {
+        error("Failed to send request to set an effecter on Host");
+    }
+    return rc;
+}
+
+int HostEffecterParser::setHostStateEffecter(
+    size_t effecterInfoIndex, std::vector<set_effecter_state_field>& stateField,
+    uint16_t effecterId)
+{
+    uint8_t& mctpEid = hostEffecterInfo[effecterInfoIndex].mctpEid;
+    uint8_t& compEffCnt = hostEffecterInfo[effecterInfoIndex].compEffecterCnt;
+    auto instanceId = instanceIdDb->next(mctpEid);
+
+    std::vector<uint8_t> requestMsg(
+        sizeof(pldm_msg_hdr) + sizeof(effecterId) + sizeof(compEffCnt) +
+            sizeof(set_effecter_state_field) * compEffCnt,
+        0);
+    auto request = reinterpret_cast<pldm_msg*>(requestMsg.data());
+    auto rc = encode_set_state_effecter_states_req(
+        instanceId, effecterId, compEffCnt, stateField.data(), request);
+
+    if (rc != PLDM_SUCCESS)
+    {
+        error(
+            "Failed to encode set state effecter states message for effecter ID '{EFFECTERID}' and instanceID '{INSTANCE}' with response code '{RC}'",
+            "EFFECTERID", effecterId, "INSTANCE", instanceId, "RC", lg2::hex,
+            rc);
+        instanceIdDb->free(mctpEid, instanceId);
+        return rc;
+    }
+
+    auto setStateEffecterStatesRespHandler = [](mctp_eid_t /*eid*/,
+                                                const pldm_msg* response,
+                                                size_t respMsgLen) {
+        if (response == nullptr || !respMsgLen)
+        {
+            error(
+                "Failed to receive response for setting state effecter states.");
+            return;
+        }
+        uint8_t completionCode{};
+        auto rc = decode_set_state_effecter_states_resp(response, respMsgLen,
+                                                        &completionCode);
+        if (rc)
+        {
+            error(
+                "Failed to decode response of set state effecter states, response code '{RC}'",
+                "RC", rc);
+            pldm::utils::reportError(
+                "xyz.openbmc_project.bmc.pldm.SetHostEffecterFailed");
+        }
+        if (completionCode)
+        {
+            error(
+                "Failed to set a remote terminus effecter, completion code '{CC}'",
+                "CC", completionCode);
+            pldm::utils::reportError(
+                "xyz.openbmc_project.bmc.pldm.SetHostEffecterFailed");
+        }
+    };
+
+    rc = handler->registerRequest(
+        mctpEid, instanceId, PLDM_PLATFORM, PLDM_SET_STATE_EFFECTER_STATES,
+        std::move(requestMsg), std::move(setStateEffecterStatesRespHandler));
+    if (rc)
+    {
+        error(
+            "Failed to send request to set an effecter on remote terminus for effecter ID '{EFFECTERID}', response code '{RC}'",
+            "EFFECTERID", effecterId, "RC", rc);
+    }
+    return rc;
+}
+
+void HostEffecterParser::createHostEffecterMatch(
+    const std::string& objectPath, const std::string& interface,
+    size_t effecterInfoIndex, size_t dbusInfoIndex, uint16_t effecterId)
+{
+    using namespace sdbusplus::bus::match::rules;
+    effecterInfoMatch.emplace_back(std::make_unique<sdbusplus::bus::match_t>(
+        pldm::utils::DBusHandler::getBus(),
+        propertiesChanged(objectPath, interface),
+        [this, effecterInfoIndex, dbusInfoIndex,
+         effecterId](sdbusplus::message_t& msg) {
+            DbusChgHostEffecterProps props;
+            std::string iface;
+            msg.read(iface, props);
+            processHostEffecterChangeNotification(props, effecterInfoIndex,
+                                                  dbusInfoIndex, effecterId);
+        }));
+}
+
+} // namespace host_effecters
+} // namespace pldm