Init

src/main/java/com/ycwl/basic/model/snowFlake/UniqueId.java

@@ -0,0 +1,49 @@
+package com.ycwl.basic.model.snowFlake;
+import io.swagger.annotations.ApiModelProperty;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.io.Serializable;
+
+/**
+ * @author Created by liuhongguang on 2019年10月27日
+ * @Description
+ */
+@NoArgsConstructor
+@AllArgsConstructor
+@Data
+public class UniqueId implements Serializable {
+
+    /**
+     * 0     +   41       +   5             +       5           +       12
+     * 固定  +  时间戳    +   工作机器ID     +     数据中心ID    +      序列号
+     */
+
+    private static final long serialVersionUID = 8632670752020316524L;
+
+    /**
+     * 工作机器ID、数据中心ID、序列号、上次生成ID的时间戳
+     */
+    @ApiModelProperty(value = "机器ID")
+    private long machineId;
+
+    @ApiModelProperty(value = "数据中心ID")
+    private long datacenterId;
+
+    @ApiModelProperty(value = "毫秒内序列")
+    private long sequence;
+
+    @ApiModelProperty(value = "时间戳")
+    private long timestamp;
+
+    @Override
+    public String toString() {
+        return "UniqueIdRespVo{" +
+                "服务机器ID=" + machineId +
+                ", 数据中心ID=" + datacenterId +
+                ", 毫秒内的序列=" + sequence +
+                ", 生成时间与预设时间戳间隔=" + timestamp +
+                '}';
+    }
+}

src/main/java/com/ycwl/basic/model/snowFlake/UniqueIdMetaData.java

@@ -0,0 +1,85 @@
+package com.ycwl.basic.model.snowFlake;
+
+import io.swagger.annotations.ApiModelProperty;
+
+public class UniqueIdMetaData {
+    /**
+     * 取当前系统启动时间为参考起始时间，
+     * 取1995-04-01为参考日
+     */
+//    public static final long START_TIME = LocalDateTime.now().toInstant(ZoneOffset.UTC).toEpochMilli();
+    public static final long START_TIME = 796665600000L;
+
+    /**
+     * 机器ID所占位数
+     */
+    @ApiModelProperty(value = "机器位数")
+    public static final long MACHINE_ID_BITS = 5L;
+
+    /**
+     * 机器ID最大值31，0-31
+     */
+    @ApiModelProperty(value = "机器ID最大")
+    public static final long MAX_MACHINE_ID = ~(-1L << MACHINE_ID_BITS);
+
+    /**
+     * 数据中心ID所占位数
+     */
+    @ApiModelProperty(value = "数据中心ID所占位数")
+    public static final long DATACENTER_ID_BITS = 5L;
+
+    /**
+     * 数据中心ID最大值31，0-31
+     */
+    @ApiModelProperty(value = "数据中心ID最大值")
+    public static final long MAX_DATACENTER_ID = ~(-1L << MACHINE_ID_BITS);
+
+    /**
+     * Sequence所占位数
+     */
+    @ApiModelProperty(value = "序列所占位数")
+    public static final long SEQUENCE_BITS = 12L;
+
+    /**
+     * 机器ID偏移量12
+     */
+    @ApiModelProperty(value = "机器ID偏移量")
+    public static final long MACHINE_SHIFT_BITS = SEQUENCE_BITS;
+
+    /**
+     * 数据中心ID偏移量12+5=17
+     */
+    @ApiModelProperty(value = "数据中心ID偏移量")
+    public static final long DATACENTER_SHIFT_BITS = SEQUENCE_BITS + MACHINE_ID_BITS;
+
+    /**
+     * 时间戳的偏移量12+5+5=22
+     */
+    @ApiModelProperty(value = "时间戳偏移量")
+    public static final long TIMESTAMP_LEFT_SHIFT_BITS = SEQUENCE_BITS + MACHINE_ID_BITS + DATACENTER_ID_BITS;
+
+    /**
+     * Sequence掩码4095
+     */
+    @ApiModelProperty(value = "序列掩码")
+    public static final long SEQUENCE_MASK = ~(-1L << SEQUENCE_BITS);
+
+    /**
+     * 机器ID掩码1023
+     */
+    @ApiModelProperty(value = "机器ID掩码")
+    public static final long MACHINE_MASK = ~(-1L << MACHINE_ID_BITS);
+
+    /**
+     * 数据中心掩码1023
+     */
+    @ApiModelProperty(value = "数据中心掩码")
+    public static final long DATACENTER_MASK = ~(-1L << MACHINE_ID_BITS);
+
+    /**
+     * 时间戳掩码2的41次方减1
+     */
+    @ApiModelProperty(value = "时间戳掩码")
+    public static final long TIMESTAMP_MASK = ~(-1L << 41L);
+
+}