Emits a log message at the specified log level


attributes, logging


In the list below, the names of required properties appear in bold. Any other properties (not in bold) are considered optional. The table also indicates any default values, and whether a property supports the NiFi Expression Language.

Name Default Value Allowable Values Description
Log Level info * trace</br> * debug</br> * info</br> * warn</br> * error</br> The Log Level to use when logging the message.</br> Supports Expression Language: true
Log prefix Log prefix appended to the log lines. It helps to distinguish the output of multiple LogMessage processors.</br> Supports Expression Language: true
Log message The log message to emit.</br> Supports Expression Language: true


Name Description
success All FlowFiles are routed to this relationship

Reads Attributes:

None specified.

Writes Attributes:

None specified.

State management:

This component does not store state.


This component is not restricted.

Input requirement:

This component requires an incoming relationship.