InsertRollingWallclock
SMT that inserts the system clock value as a message header, a value adapted to a specified time window boundary, for example every 15 minutes, or one hour.
The value inserted is stored as a STRING, and it holds either a string representation of the date and time epoch value, or a string representation of the date and time in the format specified.
Transform Type Class
Configuration
header.name
The name of the header to insert the timestamp into.
String
High
value.type
Sets the header value inserted. It can be epoch or string. If string is used, then the 'format' setting is required."
String
format
epoch,format
High
format
Sets the format of the header value inserted if the type was set to string. It can be any valid java date format.
String
High
rolling.window.type
Sets the window type. It can be fixed or rolling.
String
minutes
hours, minutes, seconds
High
rolling.window.size
Sets the window size. It can be any positive integer, and depending on the window.type it has an upper bound, 60 for seconds and minutes, and 24 for hours.
Int
15
High
timezone
Sets the timezone. It can be any valid java timezone. Overwrite it when value.type is set to format, otherwise it will raise an exception.
String
UTC
High
Example
To store the epoch value, use the following configuration:
To store a string representation of the date and time in the format yyyy-MM-dd HH:mm:ss.SSS, use the following:
To use the timezone Asia/Kolkoata, use the following:
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