tests/sysrepo-helpers/alarms.h

/*
 * Copyright (C) 2024 CESNET, https://photonics.cesnet.cz/
 *
 * Written by Tomáš Pecka <tomas.pecka@cesnet.cz>
 *
 */

#pragma once

#include "trompeloeil_doctest.h"
#include <optional>
#include <sysrepo-cpp/Subscription.hpp>
#include "sysrepo-helpers/common.h"
#include "sysrepo-helpers/datastore.h"
#include "sysrepo-helpers/rpc.h"
#include "test_log_setup.h"

enum class EntryAction {
    Create,
    Update,
};

inline ValueChanges constructAlarmInventoryChange(EntryAction action,
                                                  const std::string& alarmType,
                                                  const std::set<std::string>& resources,
                                                  const std::set<std::string>& severities,
                                                  const std::optional<bool>& willClear,
                                                  const std::optional<std::string>& description)
{
    const std::string prefix = "/ietf-alarms:alarms/alarm-inventory/alarm-type[alarm-type-id='" + alarmType + "'][alarm-type-qualifier='']";

    ValueChanges ret;

    if (action == EntryAction::Create) {
        ret.emplace(prefix + "/alarm-type-id", alarmType);
        ret.emplace(prefix + "/alarm-type-qualifier", "");
    }

    if (willClear) {
        ret.emplace(prefix + "/will-clear", *willClear ? "true" : "false");
    }

    if (description) {
        ret.emplace(prefix + "/description", *description);
    }

    size_t i = 1; /* YANG uses 1-based indexing */
    for (const auto& severity : severities) {
        ret.emplace(prefix + "/severity-level[" + std::to_string(i++) + "]", severity);
    }

    i = 1;
    for (const auto& resource : resources) {
        ret.emplace(prefix + "/resource[" + std::to_string(i++) + "]", resource);
    }

    return ret;
}

/** @brief A simple mock implementation of the alarm server */
struct AlarmWatcher {
    /** @brief Poor man's /ietf-alarms:alarms/alarm-inventory implementation in C++. */
    struct AlarmInventory {
        using AlarmType = std::string;

        struct AllowedResourcesAndSeverities {
            std::set<std::string> resources;
            std::set<std::string> severities;
        };

        std::map<AlarmType, AllowedResourcesAndSeverities> inventory;

        void add(const std::string& alarmTypeId, const std::set<std::string>& resources, const std::set<std::string>& severities);
        bool contains(const std::string& alarmTypeId, const std::optional<std::string>& resource, const std::optional<std::string>& severity) const;
    };

    AlarmInventory alarmInventory;
    DatastoreWatcher datastoreWatcher;
    RPCWatcher rpcWatcher;

    AlarmWatcher(sysrepo::Session& session);
};

// checks if the alarm is contained in AlarmInventory
#define WITH_ALARM_IN_INVENTORY(INV, ALARM_TYPE, RESOURCE, SEVERITY) \
    LR_WITH(INV.contains(ALARM_TYPE, RESOURCE, SEVERITY))

// inserts the alarm in AlarmInventory as a side effect
#define INSERT_INTO_INVENTORY(INV, ALARM_TYPE, RESOURCE, SEVERITIES) \
    LR_SIDE_EFFECT(INV.add(ALARM_TYPE, RESOURCE, SEVERITIES))

#define REQUIRE_NEW_ALARM_INVENTORY_ENTRY(WATCHER, ALARM_TYPE, RESOURCES, SEVERITIES, WILL_CLEAR, DESCRIPTION) \
    REQUIRE_DATASTORE_CHANGE(WATCHER.datastoreWatcher, constructAlarmInventoryChange(EntryAction::Create, ALARM_TYPE, RESOURCES, SEVERITIES, WILL_CLEAR, DESCRIPTION)) \
        .INSERT_INTO_INVENTORY(WATCHER.alarmInventory, ALARM_TYPE, RESOURCES, SEVERITIES)

#define REQUIRE_NEW_ALARM_INVENTORY_RESOURCE(WATCHER, ALARM_TYPE, RESOURCES) \
    REQUIRE_DATASTORE_CHANGE(WATCHER.datastoreWatcher, constructAlarmInventoryChange(EntryAction::Update, ALARM_TYPE, RESOURCES, {}, std::nullopt, std::nullopt)) \
        .INSERT_INTO_INVENTORY(WATCHER.alarmInventory, ALARM_TYPE, RESOURCES, (std::set<std::string>{}))

#define REQUIRE_NEW_ALARM(WATCHER, ALARM_TYPE, RESOURCE, SEVERITY, TEXT) \
    REQUIRE_RPC_CALL(WATCHER.rpcWatcher, (Values{ \
                                             {"/sysrepo-ietf-alarms:create-or-update-alarm", "(unprintable)"}, \
                                             {"/sysrepo-ietf-alarms:create-or-update-alarm/alarm-text", TEXT}, \
                                             {"/sysrepo-ietf-alarms:create-or-update-alarm/alarm-type-id", ALARM_TYPE}, \
                                             {"/sysrepo-ietf-alarms:create-or-update-alarm/alarm-type-qualifier", ""}, \
                                             {"/sysrepo-ietf-alarms:create-or-update-alarm/resource", RESOURCE}, \
                                             {"/sysrepo-ietf-alarms:create-or-update-alarm/severity", SEVERITY}, \
                                         })) \
        .WITH_ALARM_IN_INVENTORY(WATCHER.alarmInventory, ALARM_TYPE, RESOURCE, SEVERITY)