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Mock Source

The Mock Source can be used as a source database, primarily for performance testing scenarios.

Parameter Descriptions​

  • Initial Data Volume: The total number of records for full synchronization, range: 0 ~ 9223372036854775807.
  • Incremental Interval + Incremental Interval Count: Controls the frequency of generating incremental data, indicating that Incremental Interval Count records are generated within the Incremental Interval time, range: 0 ~ 2147483647.
  • Incremental Event Types: Specifies the types of events to generate. If all three are selected, it generates Insert Events first, followed by Update Events, and finally Delete Events, in this sequence until completion.
  • Table Name + Field Definitions: Used to define the data model when acting as a source.

Model​

Field Types​

  • string[($byte)][fixed]: String

    • $byte: Byte length (default: 64)
    • fixed: Indicates fixed length if this marker is added (default: variable length)

  • number[($precision,$scale)]: Numeric

    • $precision: Length (range 1-40, default 4)
    • $scale: Scale (range 0-10, default 1)

  • boolean: Boolean

  • date: Date

  • array: Array

  • binary: Byte

  • map: Key-value pair

  • time: Time

  • datetime: Date + Time

  • now: Current time

  • uuid: UUID

  • serial[($begin,$step)]: Auto-increment

    • $begin: Start position (default: 1)
    • $step: Step size (default: 1)

  • rnumber[($precision)]: Random number

    • $precision: Length (default: 4)

  • rstring[($byte)]: Random string of specified length

    • $byte: Byte length (default: 64)

  • rdatetime[($fraction)]: Random date with specified precision

    • $fraction: Time precision (default: 0, range 0-9)

  • rlongstring[($byte)]: Random long string of specified length

    • $byte: Byte length (default: 1000)

  • rlongbinary[($byte)]: Random binary of specified length

    • $byte: Byte length (default: 1000)

Field Default Values​

Default values used when generating data. If not set, data will be null.

Limitations​

When mode='ConnHeartbeat', no other parameters need to be configured:

  • No data for full synchronization

  • Fixed data model:

    _tapdata_heartbeat_table=[
      { "type": "string(64)", "pri": true, "name": "id", "def": "$connId" },
      { "type": "now", "pri": false, "name": "ts" }
    ]

  • Fixed frequency: 1 record/1000ms

  • Only generates update events