云计算仿真工具中文注释CloudSimTags.java

/* * Title:        CloudSim Toolkit * Description:  CloudSim (Cloud Simulation) Toolkit for Modeling and Simulation of Clouds * Licence:      GPL - http://www.gnu.org/copyleft/gpl.html * * Copyright (c) 2009-2010, The University of Melbourne, Australia */package org.cloudbus.cloudsim.core;/** * 这个类包括各种事件的类型，实体根据这个tag来进行对事件的处理 * 事件类型： * DEFAULT_BAUD_RATE：默认的波特率 * SCHEDULE_NOW：消息延迟为0 * END_OF_SIMULATION：仿真结束 * ABRUPT_END_OF_SIMULATION：仿真中断 * INSIGNIFICANT：无意义事件 * EXPERIMENT：在user实体和broker实体之间发送的实验对象 * REGISTER_RESOURCE：注册事件，用于资源和CIS之间 * REGISTER_RESOURCE_AR：支持AR的注册 * RESOURCE_LIST：注册实体的标志 * RESOURCE_AR_LIST：AR注册实体标志 * RESOURCE_CHARACTERISTICS： * RESOURCE_DYNAMICS：网格实体分配策略的标志 * RESOURCE_NUM_PE：请求PE单元的个数 * RESOURCE_NUM_FREE_PE:空闲PE单元的个数 * RECORD_STATISTICS：record events for statistical purposes * RETURN_STAT_LIST：获得统计的列表 *  * 虚拟机创建，销毁，销毁确认，迁移，迁移确认，发送数据，发送数据确认 * 删除数据，删除数据确认，产生datacenter，产生broker等 *  * 任务提交，取消，任务状态，任务终止，任务恢复，提交终止，恢复，取消等 * Contains various static command tags that indicate a type of action that * needs to be undertaken by CloudSim entities when they receive or send events. * <br> * <b>NOTE:</b> To avoid conflicts with other tags, CloudSim reserves negative * numbers, 0 - 299, and 9600. * * @authorManzur Murshed * @authorRajkumar Buyya * @authorAnthony Sulistio * @sinceCloudSim Toolkit 1.0 */public final class CloudSimTags {    // starting constant value for cloud-related tags    private static final int BASE = 0;    // starting constant value for network-related tags    private static final int NETBASE = 100;    // starting constant value for AR-related tags (also negative numbers)    //private static final int ARBASE = 200;    //////////////////////////////////////////////////////////////////////    /** Denotes boolean <tt>true</tt> in <tt>int</tt> value */    public static final int TRUE = 1;    /** Denotes boolean <tt>false</tt> in <tt>int</tt> value */    public static final int FALSE = 0;    /**     *  波特率，单位（bit/s）,传输速率      *  Denotes the default baud rate for some CloudSim entities      *  */    public static final int DEFAULT_BAUD_RATE = 9600;    /** Schedules an entity without any delay */    public static final double SCHEDULE_NOW = 0.0;    /** Denotes the end of simulation */    public static final int END_OF_SIMULATION = -1;    /** Denotes an abrupt end of simulation. That is, one event of this     * type is enough for {@link CloudSimShutdown} to trigger the end of the     * simulation */    public static final int ABRUPT_END_OF_SIMULATION = -2;    //////////////////////////////////////////////////////////////////////    /**     * Denotes insignificant simulation entity or time. This tag will not be     * used for identification purposes.     */    public static final int INSIGNIFICANT = BASE + 0;    /** Sends an Experiment object between UserEntity and Broker entity */    public static final int EXPERIMENT = BASE + 1;    /**     * Denotes a grid resource to be registered. This tag is normally used     * between CloudInformationService and CloudResouce entity.     */    public static final int REGISTER_RESOURCE = BASE + 2;    /**     * Denotes a grid resource, that can support advance reservation, to be     * registered. This tag is normally used between     * CloudInformationService and CloudResouce entity.     */    public static final int REGISTER_RESOURCE_AR = BASE + 3;    /**     * Denotes a list of all hostList, including the ones that can support     * advance reservation. This tag is normally used between     * CloudInformationService and CloudSim entity.     */    public static final int RESOURCE_LIST = BASE + 4;    /**     * Denotes a list of hostList that only support     * advance reservation. This tag is normally used between     * CloudInformationService and CloudSim entity.     */    public static final int RESOURCE_AR_LIST = BASE + 5;    /**     * Denotes grid resource characteristics information. This tag is normally     * used between CloudSim and CloudResource entity.     */    public static final int RESOURCE_CHARACTERISTICS = BASE + 6;    /**     * Denotes grid resource allocation policy. This tag is normally     * used between CloudSim and CloudResource entity.     */    public static final int RESOURCE_DYNAMICS = BASE + 7;    /**     * Denotes a request to get the total number of Processing Elements (PEs)     * of a resource. This tag is normally used between CloudSim and CloudResource     * entity.     */    public static final int RESOURCE_NUM_PE = BASE + 8;    /**     * Denotes a request to get the total number of free Processing Elements     * (PEs) of a resource. This tag is normally used between CloudSim and     * CloudResource entity.     */    public static final int RESOURCE_NUM_FREE_PE = BASE + 9;    /**     * Denotes a request to record events for statistical purposes. This tag is     * normally used between CloudSim and CloudStatistics entity.     */    public static final int RECORD_STATISTICS = BASE + 10;    /** Denotes a request to get a statistical list. */    public static final int RETURN_STAT_LIST = BASE + 11;    /**     * Denotes a request to send an Accumulator object based on category into     * an event scheduler. This tag is normally used between ReportWriter and     * CloudStatistics entity.     */    public static final int RETURN_ACC_STATISTICS_BY_CATEGORY = BASE + 12;    /** Denotes a request to register a CloudResource entity to a regional     * CloudInformationService (GIS) entity     */    public static final int REGISTER_REGIONAL_GIS = BASE + 13;    /** Denotes a request to get a list of other regional GIS entities     * from the system GIS entity     */    public static final int REQUEST_REGIONAL_GIS = BASE + 14;    /**     * Denotes request for grid resource characteristics information.     * This tag is normally used between CloudSim and CloudResource entity.     */    public static final int RESOURCE_CHARACTERISTICS_REQUEST = BASE + 15;//    /////////////////////////////////////////////////////////////////    /** Signal used by Entities to connect to Routers using a link. *///    public static final int REGISTER_LINK = NETBASE + 0;////    /** This is used by a router when it wants to connect with another router.*///    public static final int REGISTER_ROUTER = NETBASE + 1;////    /** All NetPackets are routed through the network with this tag. *///    public static final int PKT_FORWARD = NETBASE + 2;////    /** This is used by Routers to send route advertisements. *///    public static final int ROUTER_AD = NETBASE + 3;////    /** This tag is used by Output class to time its packet sendings. *///    public static final int SEND_PACKET = NETBASE + 4;////    /** This tag is used by an entity to send ping requests */    public static final int INFOPKT_SUBMIT = NETBASE + 5;   /** This tag is used to return the ping request back to sender */    public static final int INFOPKT_RETURN = NETBASE + 6;////    /**//     * This tag is used to identify a packet as a junk packet used for//     * background traffic//     *///    public static final int JUNK_PKT = NETBASE + 7;////    /** Denotes that this packet is empty. This tag//     * is used internally by {@link gridsim.net.Input} and//     * {@link gridsim.net.Output} entities.//     *///    public static final int EMPTY_PKT = NETBASE + 8;////    /** Denotes that this packet will be sent to a packet scheduler by a router//     * for enqueing.//     * This tag is used by a router to an active packet scheduler, such as//     * the {@link gridsim.net.RateControlledScheduler} entity.//     *///    public static final int SCHEDULER_ENQUE = NETBASE + 9;////    /** Denotes that this packet will be sent by a packet scheduler to a router//     * for dequeing.//     * This tag is used by an active packet scheduler, such as//     * the {@link gridsim.net.RateControlledScheduler} entity to a router.//     *///    public static final int SCHEDULER_DEQUE = NETBASE + 10;////    public static final int NET_PACKET_LEVEL = NETBASE + 11;////    public static final int NET_FLOW_LEVEL   = NETBASE + 12;////    public static final int NET_BUFFER_PACKET_LEVEL = NETBASE + 13;////    // Denotes flow en-route to destination (used manually by entities)//    public static final int FLOW_SUBMIT = NETBASE + 14;////    // Internal message to check forecast of flow duration//    public static final int FLOW_HOLD = NETBASE + 15;////    // Message to update forecast of flow duration//    public static final int FLOW_UPDATE = NETBASE + 16;////    // Denotes flow ack en-route to destination (used manually by entities)//    public static final int FLOW_ACK = NETBASE + 17;//////    /////////////////////////////////////////////////////////////////    // For the gridsim.net.fnb package////    /** This is to simulate the finite buffers.//     * This constant is to tell an entity//     * that a packet has been dropped. *///    public static final int FNB_PACKET_DROPPED = NETBASE + 31;////    /** This is to simulate the finite buffers.//     * This constant is used when an Output//     * port tells a user that a cloudlet has failed because its (Cloudlet) packets//     *  has been dropped. *///    public static final int FNB_CLOUDLET_FAILED_BECAUSE_PACKET_DROPPED = NETBASE + 32;////    /** This is to simulate the finite buffers. A FIFO dropping algorithm. *///    public static final int FNB_FIFO = NETBASE + 33;////    /** This is to simulate the finite buffers. A RED (Random Early Detection)//      dropping algorithm. *///    public static final int FNB_RED = NETBASE + 34;////    /** This is to simulate the finite buffers.//     * The event used to capture the number of dropped packets.//     * This event is sent form a SCFScheduler to itself every T time. *///    public static final int FNB_COUNT_DROPPED_PKTS = NETBASE + 35;////    /** This is to simulate the finite buffers.//     * Adaptative RED (Random Early Detection) dropping algorithm. *///    public static final int FNB_ARED = NETBASE + 36;////    /** This is to update the parameters of ARED. *///    public static final int FNB_UPDATE_ARED_PARAMETERS = NETBASE + 37;////    /** This is to simulate the finite buffers.//     * This constant is used when an Output port tells a user that a file//     * has failed because its (File) packets has been dropped. *///    public static final int FNB_FILE_FAILED_BECAUSE_PACKET_DROPPED = NETBASE + 38;////    /** This is to simulate the finite buffers.//     *  This constant is used when an Output port tells a user that a file//     * and a cloudlet have failed because their (File and Cloudlet) packets//     *  has been dropped. *///    public static final int FNB_FILE_CLOUDLET_FAILED_BECAUSE_PACKET_DROPPED = NETBASE + 39;////    /** This is to identify when a packet contains a file. *///    public static final int FNB_PKT_CONTAINS_FILE = NETBASE + 40;////    /** This is to update the parameters of ARED.//     * The time period between updates (0.5 seconds). *///    public static final double FNB_UPDATE_ARED_PARAMETERS_PERIOD = 0.5;////    /**//     * When a router drops a packet, it has to tell to a user.//     * But the router does not notify immediately (when the dropping ocurs),//     * but with a given delay (this delay). *///    public static final double FNB_DROPPING_DELAY = 0.01; // 10 milliseconds    /////////////////////////////////////////////////////////////    // I intentionally put a gap to incorporate future tags    // so I don't have to change the numbers!    /**     * Denotes the return of a Cloudlet back to sender. This tag is     * normally used by CloudResource entity.     */    public static final int CLOUDLET_RETURN = BASE + 20;    /**     * Denotes the submission of a Cloudlet. This tag is normally     * used between CloudSim User and CloudResource entity.     */    public static final int CLOUDLET_SUBMIT = BASE + 21;    /**     * Denotes the submission of a Cloudlet with an acknowledgement.     * This tag is normally used between CloudSim User and CloudResource entity.     * 任务提交，取消，任务状态，任务终止，任务恢复，提交终止，恢复，取消等     */    public static final int CLOUDLET_SUBMIT_ACK = BASE + 22;    /** Cancels a Cloudlet submitted in the CloudResource entity. */    public static final int CLOUDLET_CANCEL = BASE + 23;    /** Denotes the status of a Cloudlet. */    public static final int CLOUDLET_STATUS = BASE + 24;    /** Pauses a Cloudlet submitted in the CloudResource entity. */    public static final int CLOUDLET_PAUSE = BASE + 25;    /** Pauses a Cloudlet submitted in the CloudResource entity with an     * acknowledgement.     */    public static final int CLOUDLET_PAUSE_ACK = BASE + 26;    /** Resumes a Cloudlet submitted in the CloudResource entity. */    public static final int CLOUDLET_RESUME = BASE + 27;    /** Resumes a Cloudlet submitted in the CloudResource entity with an     * acknowledgement.     */    public static final int CLOUDLET_RESUME_ACK = BASE + 28;    /** Moves a Cloudlet to another CloudResource entity. */    public static final int CLOUDLET_MOVE = BASE + 29;    /** Moves a Cloudlet to another CloudResource entity with an acknowledgement.     */    public static final int CLOUDLET_MOVE_ACK = BASE + 30;    /**     * Denotes a request to create a new VM in a Datacentre     * With acknowledgement information sent by the Datacentre     */    public static final int VM_CREATE = BASE + 31;    /**     * Denotes a request to create a new VM in a Datacentre     * With acknowledgement information sent by the Datacentre     * 虚拟机创建，销毁，销毁确认，迁移，迁移确认，发送数据，发送数据确认     * 删除数据，删除数据确认，产生datacenter，产生broker等     */    public static final int VM_CREATE_ACK = BASE + 32;    /**     * Denotes a request to destroy a new VM in a Datacentre     */    public static final int VM_DESTROY = BASE + 33;    /**     * Denotes a request to destroy a new VM in a Datacentre     */    public static final int VM_DESTROY_ACK = BASE + 34;    /**     * Denotes a request to migrate a new VM in a Datacentre     */    public static final int VM_MIGRATE = BASE + 35;    /**     * Denotes a request to migrate a new VM in a Datacentre     * With acknowledgement information sent by the Datacentre     */    public static final int VM_MIGRATE_ACK = BASE +36;    /**     * Denotes an event to send a file from a user to a datacenter     */    public static final int VM_DATA_ADD = BASE + 37;    /**     * Denotes an event to send a file from a user to a datacenter     */    public static final int VM_DATA_ADD_ACK = BASE + 38;    /**     * Denotes an event to remove a file from a datacenter     */    public static final int VM_DATA_DEL = BASE + 39;    /**     * Denotes an event to remove a file from a datacenter     */    public static final int VM_DATA_DEL_ACK = BASE + 40;    /**     * Denotes an internal event generated in a PowerDatacenter     */    public static final int VM_DATACENTER_EVENT = BASE + 41;    /**     * Denotes an internal event generated in a Broker     */    public static final int VM_BROKER_EVENT = BASE + 42;//    ///////////////////////////////////////////////////////////////    // NOTE: below are new tags needed for the resource failure functionality//    // added by Agustin Caminero, Universidad de Castilla La Mancha (UCLM),//    // Spain. Nov 2006.////    /**//     * Denotes a request to get the total number of machines of a resource.//     * This tag is normally used between CloudSim and CloudResource entity.//     *///    public static final int RESOURCE_NUM_MACHINES = BASE + 31;////    /**//     * This tag is used to simulate a resource failure.//     * A RegionalGIS object sends an event to itself by using this tag,//     * so it can send a failure message to hostList in the future.//     * This tag is also used when a failed resource receives a ping request.//     * In this case, the resource will use this tag in the ping response.//     *///    public static final int GRIDRESOURCE_FAILURE = BASE + 32;////    /**//     * This tag is used to tell a resource, which is currently failed or down,//     * to come back to life.//     *///    public static final int GRIDRESOURCE_RECOVERY = BASE + 33;////    /**//     * This tag is used by a user to poll a resource to find out whether//     * it is out of order or not.//     *///    public static final int GRIDRESOURCE_FAILURE_INFO = BASE + 34;////    /** This tag is used by a user to poll a resource. *///    public static final int GRIDRESOURCE_POLLING = BASE + 35;////    /** The polling interval for users. *///    public static final int POLLING_TIME_USER = BASE + 36;////    /** The polling interval for the GIS entities. *///    public static final int POLLING_TIME_GIS = BASE + 37;//    ///////////////////////////////////////////////////////////////////    // The below tags are sent by AdvanceReservation to ARCloudResource class////    /**//     * Commits a reservation <b>without</b> any Cloudlets attached.//     * This tag is sent by AdvanceReservation to ARCloudResource class.//     *///    public static final int SEND_AR_COMMIT_ONLY = ARBASE + 1;////    /**//     * Commits a reservation <b>with</b> one or more Cloudlets attached.//     * This tag is sent by AdvanceReservation to ARCloudResource class.//     *///    public static final int SEND_AR_COMMIT_WITH_CLOUDLET = ARBASE + 2;////    /**//     * Requests for a new <b>advanced</b> reservation.//     * This tag is sent by AdvanceReservation to ARCloudResource class.//     *///    public static final int SEND_AR_CREATE = ARBASE + 3;////    /**//     * Requests for a new <b>immediate</b> reservation.//     * This tag is sent by AdvanceReservation to ARCloudResource class.//     *///    public static final int SEND_AR_CREATE_IMMEDIATE = ARBASE + 4;////    /**//     * Cancels an existing reservation.//     * This tag is sent by AdvanceReservation to ARCloudResource class.//     *///    public static final int SEND_AR_CANCEL = ARBASE + 5;////    /**//     * Requests a list of busy time of a resource.//     * This tag is sent by AdvanceReservation to ARCloudResource class.//     *///    public static final int SEND_AR_LIST_BUSY_TIME = ARBASE + 6;////    /**//     * Requests a list of free or empty time of a resource.//     * This tag is sent by AdvanceReservation to ARCloudResource class.//     *///    public static final int SEND_AR_LIST_FREE_TIME = ARBASE + 7;////    /**//     * Queries the current status of a reservation.//     * This tag is sent by AdvanceReservation to ARCloudResource class.//     *///    public static final int SEND_AR_QUERY = ARBASE + 8;////    /**//     * Modifies an existing reservation.//     * This tag is sent by AdvanceReservation to ARCloudResource class.//     *///    public static final int SEND_AR_MODIFY = ARBASE + 9;////    ///////////////////////////////////////////////////////////////////    // Below denotes the status of a reservation during its lifetime.//    // This answer is given in reply to//    // AdvanceReservation.queryReservation() method.////    /** The reservation has not yet begun, i.e. the current simulation time is//     * before the start time.//     * This tag is sent by a resource or allocation policy to AdvanceReservation//     * class.//     *///    public static final int AR_STATUS_NOT_STARTED = ARBASE + 10;////    /**//     * The reservation has been accepted by a resource, but not yet been//     * committed by a user.//     * This tag is sent by a resource or allocation policy to AdvanceReservation//     * class.//     *///    public static final int AR_STATUS_NOT_COMMITTED = ARBASE + 11;////    /**//     * The reservation has been canceled by a user during execution or active//     * session.//     * This tag is sent by a resource or allocation policy to AdvanceReservation//     * class.//     *///    public static final int AR_STATUS_TERMINATED = ARBASE + 12;////    /** The reservation has begun and is currently being executed by a//     * destinated CloudResource entity.//     * This tag is sent by a resource or allocation policy to AdvanceReservation//     * class.//     *///    public static final int AR_STATUS_ACTIVE = ARBASE + 13;////    /** The reservation has been completed.//     * This tag is sent by a resource or allocation policy to AdvanceReservation//     * class.//     *///    public static final int AR_STATUS_COMPLETED = ARBASE + 14;////    /** The reservation has been canceled before activation.//     * This tag is sent by a resource or allocation policy to AdvanceReservation//     * class.//     *///    public static final int AR_STATUS_CANCELED = ARBASE + 15;////    /**//     * The reservation has passed its expiry time before being committed.//     * Hence, a resource will not execute this reservation.//     * This tag is sent by a resource or allocation policy to AdvanceReservation//     * class.//     *///    public static final int AR_STATUS_EXPIRED = ARBASE + 16;////    /**//     * The reservation booking ID is invalid.//     * This tag is sent by a resource or allocation policy to AdvanceReservation//     * class.//     *///    public static final int AR_STATUS_ERROR_INVALID_BOOKING_ID = ARBASE + 17;////    /**//     * The reservation booking ID does not exist.//     * This tag is sent by a resource or allocation policy to AdvanceReservation//     * class.//     *///    public static final int AR_STATUS_RESERVATION_DOESNT_EXIST = ARBASE + 18;////    /**//     * Unknown error happens.//     * This tag is sent by a resource or allocation policy to AdvanceReservation//     * class.//     *///    public static final int AR_STATUS_ERROR = ARBASE + 19;////    ///////////////////////////////////////////////////////////////////    // The below tags are used in reply to//    // AdvanceReservation.cancelReservation() method.//    // These tags are sent by a resource or allocation policy.////    /**//     * Cancellation of a reservation fails.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CANCEL_FAIL = ARBASE + 20;////    /**//     * Cancellation of a reservation fails due to invalid booking ID.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CANCEL_FAIL_INVALID_BOOKING_ID = ARBASE + 21;////    /**//     * Cancellation of a reservation fails due to finished Cloudlets.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CANCEL_FAIL_CLOUDLET_FINISHED = ARBASE + 22;////    /**//     * Cancellation of a reservation is successful. It could also means//     * a reservation has expired or completed.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CANCEL_SUCCESS = ARBASE + 23;////    /**//     * Cancellation of a reservation fails since a resource can not//     * support Advance Reservation functionalities.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CANCEL_ERROR_RESOURCE_CANT_SUPPORT = ARBASE + 24;////    /**//     * Cancellation of a reservation fails due to unknown error.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CANCEL_ERROR = ARBASE + 25;////    ///////////////////////////////////////////////////////////////////    // The below tags are used in reply to//    // AdvanceReservation.commitReservation() method.//    // These tags are sent by a resource or allocation policy.////    /**//     * Committing a reservation is successful.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_COMMIT_SUCCESS = ARBASE + 30;////    /**//     * Committing a reservation is failed.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_COMMIT_FAIL = ARBASE + 31;////    /**//     * Committing a reservation is failed due to expiry.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_COMMIT_FAIL_EXPIRED = ARBASE + 32;////    /**//     * Committing a reservation is failed due to invalid booking ID.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_COMMIT_FAIL_INVALID_BOOKING_ID = ARBASE + 33;////    /**//     * Committing a reservation is failed due to a resource does not support//     * Advance Reservation functionalities.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_COMMIT_ERROR_RESOURCE_CANT_SUPPORT = ARBASE + 34;////    /**//     * Committing a reservation is failed due to unknown error.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_COMMIT_ERROR = ARBASE + 35;////    ///////////////////////////////////////////////////////////////////    // The below tags are used in reply to//    // AdvanceReservation.modifyReservation() method.//    // These tags are sent by a resource or allocation policy.////    /**//     * Modification of a reservation fails due to invalid booking ID.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_MODIFY_FAIL_INVALID_BOOKING_ID = ARBASE + 40;////    /**//     * Modification of a reservation fails since it is in active state.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_MODIFY_FAIL_RESERVATION_ACTIVE = ARBASE + 41;////    /**//     * Modification of a reservation fails due to invalid start time.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_MODIFY_FAIL_INVALID_START_TIME = ARBASE + 42;////    /**//     * Modification of a reservation fails due to invalid end time.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_MODIFY_FAIL_INVALID_END_TIME = ARBASE + 43;////    /**//     * Modification of a reservation fails due to invalid number of PEs//     * requested.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_MODIFY_FAIL_INVALID_NUM_PE = ARBASE + 44;////    /**//     * Modification of a reservation fails due to unknown error.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_MODIFY_ERROR = ARBASE + 45;////    /**//     * Modification of a reservation is successfull.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_MODIFY_SUCCESS = ARBASE + 46;////    /**//     * Modification of a reservation fails due to a resource that can not//     * support Advance Reservation functionalities.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_MODIFY_FAIL_RESOURCE_CANT_SUPPORT = ARBASE + 47;////    ///////////////////////////////////////////////////////////////////    /** Denotes a return tag from CloudResource to User entity//     * for sending the result of committing a reservation back.//     *///    public static final int RETURN_AR_COMMIT = ARBASE + 50;////    /** Denotes a return tag from CloudResource to User entity//     * for sending the result of query free or busy time of a reservation//     *///    public static final int RETURN_AR_QUERY_TIME = ARBASE + 51;////    /** Denotes a return tag from CloudResource to User entity//     * for sending the result of a reservation status//     *///    public static final int RETURN_AR_QUERY_STATUS = ARBASE + 52;////    /** Denotes a return tag from CloudResource to User entity//     * for sending the result of cancelling a reservation//     *///    public static final int RETURN_AR_CANCEL = ARBASE + 53;////    /** Denotes a return tag from CloudResource to User entity//     * for sending the result of requesting or creating a new reservation//     *///    public static final int RETURN_AR_CREATE = ARBASE + 54;////    /** Denotes a return tag from CloudResource to User entity//     * for sending the result of modifying a reservation//     *///    public static final int RETURN_AR_MODIFY = ARBASE + 55;////    ///////////////////////////////////////////////////////////////////    // The below tags are used in reply to//    // AdvanceReservation.createReservation() method.//    // These tags are sent by a resource or allocation policy.//    // These tags have negative numbers as not to confuse with a generated//    // reservation ID done by a resource.////    /**//     * New request of a reservation fails due to invalid start time.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_ERROR_INVALID_START_TIME = -1;////    /**//     * New request of a reservation fails due to invalid end time.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_ERROR_INVALID_END_TIME = -2;////    /**//     * New request of a reservation fails due to invalid duration time.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_ERROR_INVALID_DURATION_TIME = -3;////    /**//     * New request of a reservation fails due to invalid number of PEs//     * requested.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_ERROR_INVALID_NUM_PE = -4;////    /**//     * New request of a reservation fails due to invalid resource ID.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_ERROR_INVALID_RESOURCE_ID = -5;////    /**//     * New request of a reservation fails due to invalid resource name.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_ERROR_INVALID_RESOURCE_NAME = -6;////    /**//     * New request of a reservation fails due to unknown error.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_ERROR = -7;////    /**//     * New request of a reservation fails due to a resource that can not//     * support Advance Reservation functionalities.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_FAIL_RESOURCE_CANT_SUPPORT = -8;////    /**//     * New request of a reservation fails due to not enough PEs.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_FAIL_RESOURCE_NOT_ENOUGH_PE = -9;////    /**//     * New request of a reservation fails since trying to request more than//     * the max. number allowed by a resource.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    // TODO: not sure at the moment. Probably for future tag//    //public static final int AR_CREATE_FAIL_OVERLIMIT_MAX_PE = -10;////    /**//     * New request of a reservation fails due to a resource full in 1 second.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_FAIL_RESOURCE_FULL_IN_1_SEC = -11;////    /**//     * New request of a reservation fails due to a resource full in 5 seconds.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_FAIL_RESOURCE_FULL_IN_5_SECS = -12;////    /**//     * New request of a reservation fails due to a resource full in 10 seconds.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_FAIL_RESOURCE_FULL_IN_10_SECS = -13;////    /**//     * New request of a reservation fails due to a resource full in 15 seconds.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_FAIL_RESOURCE_FULL_IN_15_SECS = -14;////    /**//     * New request of a reservation fails due to a resource full in 30 seconds.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_FAIL_RESOURCE_FULL_IN_30_SECS = -15;////    /**//     * New request of a reservation fails due to a resource full in 45 seconds.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_FAIL_RESOURCE_FULL_IN_45_SECS = -16;////    /**//     * New request of a reservation fails due to a resource full in 1 minute.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_FAIL_RESOURCE_FULL_IN_1_MIN = -17;////    /**//     * New request of a reservation fails due to a resource full in 5 minutes.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_FAIL_RESOURCE_FULL_IN_5_MINS = -18;////    /**//     * New request of a reservation fails due to a resource full in 10 minutes.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_FAIL_RESOURCE_FULL_IN_10_MINS = -19;////    /**//     * New request of a reservation fails due to a resource full in 15 minutes.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_FAIL_RESOURCE_FULL_IN_15_MINS = -20;////    /**//     * New request of a reservation fails due to a resource full in 30 minutes.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_FAIL_RESOURCE_FULL_IN_30_MINS = -21;////    /**//     * New request of a reservation fails due to a resource full in 45 minutes.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_FAIL_RESOURCE_FULL_IN_45_MINS = -22;////    /**//     * New request of a reservation fails due to a resource full in 1 hour.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_FAIL_RESOURCE_FULL_IN_1_HOUR = -23;////    /**//     * New request of a reservation fails due to a resource full in 5 hours.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_FAIL_RESOURCE_FULL_IN_5_HOURS = -24;////    /**//     * New request of a reservation fails due to a resource full in 10 hours.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_FAIL_RESOURCE_FULL_IN_10_HOURS = -25;////    /**//     * New request of a reservation fails due to a resource full in 15 hours.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_FAIL_RESOURCE_FULL_IN_15_HOURS = -26;////    /**//     * New request of a reservation fails due to a resource full in 30 hours.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_FAIL_RESOURCE_FULL_IN_30_HOURS = -27;////    /**//     * New request of a reservation fails due to a resource full in 45 hours onwards.//     * This tag is sent by a resource or allocation policy to//     * AdvanceReservation entity.//     *///    public static final int AR_CREATE_FAIL_RESOURCE_FULL_IN_45_HOURS = -28;////    ///////////////////////////////////////////////////////////////    /** Private Constructor */    private CloudSimTags() {        throw new UnsupportedOperationException("CloudSim Tags cannot be instantiated");    }}