write_line

The write_line method writes a message to the log stream.

Syntax

write_line( level, message )

Arguments

Argument Description
level

The log level for the message. The message only appears in the log if the log level specified here is the same as, or higher than, the log level set for the log stream. To obtain the correct value for the log level, use one of the following functions:

  • log_level_always()
  • log_level_error()
  • log_level_warning()
  • log_level_normal()
  • log_level_full()
message (string) The message to write to the log stream.

Example

To write a log message from the ExecuteDocumentLua processor in IDOL NiFi Ingest:

local log = get_log()
log:write_line(log_level_normal(), "doing something...")

-- or use the following functions
log_info("My information message")
log_warn("My warning message")
log_error("My error message")

To write a log message to an ACI Server application log:

local log = get_log("application")
log:write_line(log_level_normal(), "doing something...")