Write to log

Description

The Write To Log transform writes information to the Hop logging system.

Typical use cases are logging specific values or custom logging messages to the Hop logs.

Options

Option Description

Transform Name

Name of the transform this name has to be unique in a single pipeline.

Log level

The logging level to use.

Print header

Whether or not the column names for data values is printed. In the example below, this value has been set to false, so only the actual values (3, 4) are printed.

Limit rows

Limit the number of rows given by the parameter "Nr. of rows to print".

Nr. of rows to print

The number of rows to print when option "limit rows" is checked.

Write to log

The text to use in the logging line(s).

Fields

The data from fields that should we written to the log.

Example log output

2020/05/14 12:30:52 - Write to log.0 -
2020/05/14 12:30:52 - Write to log.0 - ----------> Linenr 1----------------------------
2020/05/14 12:30:52 - Write to log.0 - test log
2020/05/14 12:30:52 - Write to log.0 -
2020/05/14 12:30:52 - Write to log.0 -  3
2020/05/14 12:30:52 - Write to log.0 -  4
2020/05/14 12:30:52 - Write to log.0 -
2020/05/14 12:30:52 - Write to log.0 - ====================
2020/05/14 12:30:52 - Write to log.0 -
2020/05/14 12:30:52 - Write to log.0 - ----------> Linenr 2----------------------------
2020/05/14 12:30:52 - Write to log.0 - test log
2020/05/14 12:30:52 - Write to log.0 -
2020/05/14 12:30:52 - Write to log.0 -  3
2020/05/14 12:30:52 - Write to log.0 -  4
2020/05/14 12:30:52 - Write to log.0 -
2020/05/14 12:30:52 - Write to log.0 - ====================