gz-yami / mall4j Goto Github PK

            String str = String.valueOf(test1.nextId(i));
            System.out.println(str);
            f.write(str + "\n");
        }
    }

  //  System.out.println(test1.nextId(1666885538000l));

    f.close();



}
private static final long serialVersionUID = 1L;



public static long DEFAULT_TWEPOCH = 1288834974657L;

public static long DEFAULT_TIME_OFFSET = 2000L;

private static final long WORKER_ID_BITS = 5L;

private static final long MAX_WORKER_ID = -1L ^ (-1L << WORKER_ID_BITS);
private static final long DATA_CENTER_ID_BITS = 5L;

private static final long MAX_DATA_CENTER_ID = -1L ^ (-1L << DATA_CENTER_ID_BITS);

private static final long SEQUENCE_BITS = 12L;

private static final long WORKER_ID_SHIFT = SEQUENCE_BITS;

private static final long DATA_CENTER_ID_SHIFT = SEQUENCE_BITS + WORKER_ID_BITS;

private static final long TIMESTAMP_LEFT_SHIFT = SEQUENCE_BITS + WORKER_ID_BITS + DATA_CENTER_ID_BITS;


private static final long SEQUENCE_MASK = ~(-1L << SEQUENCE_BITS);// 4095

private  long twepoch;
private  long workerId;
private  long dataCenterId;
private  boolean useSystemClock;

private  long timeOffset;

private long sequence = 0L;
private long lastTimestamp = -1L;


public test() {
    this(IdUtil.getWorkerId(IdUtil.getDataCenterId(MAX_DATA_CENTER_ID), MAX_WORKER_ID));
}


public test(long workerId) {
    this(workerId, IdUtil.getDataCenterId(MAX_DATA_CENTER_ID));
}


public test(long workerId, long dataCenterId) {
    this(workerId, dataCenterId, false);
}


public test(long workerId, long dataCenterId, boolean isUseSystemClock) {
    this(null, workerId, dataCenterId, isUseSystemClock);
}


public test(Date epochDate, long workerId, long dataCenterId, boolean isUseSystemClock) {
    this(epochDate, workerId, dataCenterId, isUseSystemClock, DEFAULT_TIME_OFFSET);
}


public test(Date epochDate, long workerId, long dataCenterId, boolean isUseSystemClock, long timeOffset) {
    if (null != epochDate) {
        this.twepoch = epochDate.getTime();
        System.out.println("null != epochDate");
    } else{
        // Thu, 04 Nov 2010 01:42:54 GMT
        this.twepoch = DEFAULT_TWEPOCH;
    }
    if (workerId > MAX_WORKER_ID || workerId < 0) {
        throw new IllegalArgumentException(StrUtil.format("worker Id can't be greater than {} or less than 0", MAX_WORKER_ID));
    }
    if (dataCenterId > MAX_DATA_CENTER_ID || dataCenterId < 0) {
        throw new IllegalArgumentException(StrUtil.format("datacenter Id can't be greater than {} or less than 0", MAX_DATA_CENTER_ID));
    }
    this.workerId = workerId;
    this.dataCenterId = dataCenterId;
    this.useSystemClock = isUseSystemClock;
    this.timeOffset = timeOffset;
}


public long getWorkerId(long id) {
    return id >> WORKER_ID_SHIFT & ~(-1L << WORKER_ID_BITS);
}

public long getDataCenterId(long id) {
    return id >> DATA_CENTER_ID_SHIFT & ~(-1L << DATA_CENTER_ID_BITS);
}

public long getGenerateDateTime(long id) {
    return (id >> TIMESTAMP_LEFT_SHIFT & ~(-1L << 41L)) + twepoch;
}


public synchronized long nextId(long time0) {

    long timestamp = time0;
    if (timestamp < this.lastTimestamp) {
        if(this.lastTimestamp - timestamp < timeOffset){
            // 容忍指定的回拨，避免NTP校时造成的异常
            timestamp = lastTimestamp;
        } else{
            // 如果服务器时间有问题(时钟后退) 报错。
            throw new IllegalStateException(StrUtil.format("Clock moved backwards. Refusing to generate id for {}ms", lastTimestamp - timestamp));
        }
    }

    if (timestamp == this.lastTimestamp) {
        final long sequence = (this.sequence + 1) & SEQUENCE_MASK;
        if (sequence == 0) {
            timestamp = tilNextMillis(lastTimestamp,time0);
        }
        this.sequence = sequence;
    } else {
        sequence = 0L;
    }

    lastTimestamp = timestamp;

    long result = ((timestamp - twepoch) << TIMESTAMP_LEFT_SHIFT)
            | (dataCenterId << DATA_CENTER_ID_SHIFT)
            | (workerId << WORKER_ID_SHIFT)
            | sequence;


    return result;
}


public String nextIdStr() {
   // return Long.toString(nextId());
    return null;
}

// ------------------------------------------------------------------------------------------------------------------------------------ Private method start


private long tilNextMillis(long lastTimestamp,long time0) {
    long timestamp = time0;
   
    while (timestamp == lastTimestamp) {
        timestamp = time0;
    }
    if (timestamp < lastTimestamp) {
        // 如果发现新的时间戳比上次记录的时间戳数值小，说明操作系统时间发生了倒退，报错
        throw new IllegalStateException(
                StrUtil.format("Clock moved backwards. Refusing to generate id for {}ms", lastTimestamp - timestamp));
    }
    return timestamp;
}

private long genTime() {
    return this.useSystemClock ? SystemClock.now() : System.currentTimeMillis();
}
// ------------------------------------------------------------------------------------------------------------------------------------ Private method end

gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.

gyp ERR! cwd C:\Users\yikong\Desktop\mall4v-master\node_modules\node-sass
gyp ERR! node -v v14.15.4
gyp ERR! node-gyp -v v3.8.0
gyp ERR! not ok

npm ERR! [email protected] postinstall: `node scripts/build.js`
npm ERR! Exit status 1