MATTER-Adaptation_Layer/examples/chip-tool/commands/delay/SleepCommand.h

/*
 *   Copyright (c) 2022 Project CHIP Authors
 *   All rights reserved.
 *
 *   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 "../common/CHIPCommand.h"

/**
 * This command blocks the event loop processing for a given amount of time.
 *
 * For example when the event loop is blocked the messages coming-in will not be acked,
 * forcing a retransmission on the other side.
 *
 */

class SleepCommand : public CHIPCommand
{
public:
    SleepCommand(CredentialIssuerCommands * credIssuerCommands) : CHIPCommand("sleep", credIssuerCommands)
    {
        AddArgument("duration-in-ms", 0, UINT32_MAX, &mDurationInMs,
                    "Block the event loop processing for duration-in-ms milliseconds.");
    }

    /////////// CHIPCommand Interface /////////
    CHIP_ERROR RunCommand() override;
    chip::System::Clock::Timeout GetWaitDuration() const override
    {
        // The allowed duration of this method is at least as long as the time specified for blocking the
        // event loop. In order to not fail on some small delays in processing some extra time before
        // failing is added.
        constexpr uint16_t mExtraTimeForFailure = 1000;

        return chip::System::Clock::Milliseconds32(mDurationInMs + mExtraTimeForFailure);
    }

private:
    uint32_t mDurationInMs;
};