random_source

Producer block that generates random messages of a specific type key and type.

Properties

key: A unicode string that will be used as key in the generated messages. (required, string)
type The type of data that will be generated. Supported types are integer, real and boolean. (required, string)
delay_ms: If present, the block will wait delay_ms before emitting a new sample. (optional, integer)

When type is "integer"

When type is "real"

When type is "boolean"

p: The probability of the generator returning true. Defaults to 0.5 The value must be >= 0 and <= 1. (optional, real)

The key to be used in generated messages. (e.g. "my_example_key").

The type of the data contained in generated messages (e.g. "integer").

The minimum generated value (e.g. 0). Only available when type is integer or real.

The maximum generated value (e.g. 100). Only available when type is integer or real.

The probability of the generator returning true (e.g. 0.5). Only available when type is boolean

The delay between generated messages in milliseconds. For example use 5000 for 5 seconds.

key: contains the key specified as parameter.
data: contains the generated value.
type: the type specified as parameter.
timestamp: contains the timestamp (in microseconds) in which the message was generated.

The following example uses random_source block to generate messages that emulate a dice throw every 10000 milliseconds (10 seconds).

random_source
  .type("integer")
  .min(1)
  .max(6)
  .delay_ms(10000)
[...]