Controller 25.4
Controller Reference

# get_log

The `get_log` method returns a LuaLog object that provides the capability to write messages to a specified log type.

## Syntax

    get_log( [log_type] )

## Arguments

Argument | Description
--- | ---
`log_type` | (string) The log type name.

## Returns

(LuaLog). A LuaLog object.

## Example

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

    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...")

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Version 25.4 | Last updated October 2025

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Product: Knowledge Discovery Controller 25.4

Topic Title: get_log