Logging
Transformer can log many aspects of its operation, to help you check that it’s running correctly and pinpoint the source of any problems arising.
Because Transformer is a DataSource application, it comes with the standard DataSource logging facilities built-in. It also produces a number of subsidiary logs that are dedicated to particular Transformer modules.
Timestamps in log files
From version 7.1 of Transformer, the resolution of log-event timestamps has been increased from millisecond to microsecond granularity. This aligns Transformer with the trend within the financial industry towards the use of higher-resolution timestamps. For more information, see Timestamp resolution.
Event log
The standard DataSource event log.
Default file name: transformer.log
Configuration items: event-log, log-level, add-log, and others in DataSource Logging configuration.
Packet log
The standard DataSource packet log.
Default file name: packet-transformer.log
Configuration items: datasrc-pkt-log in DataSource peers configuration (part 2)
Pipeline activity log
Pipeline message log.
Default file name: pipeline.log
Configuration items: logfile, log-level, pipeline-logflags, and add-pipeline:log-flags in Pipeline configuration.
Cluster log
The Cluster module’s log.
Default file name: cluster.log
Configuration items: logfile and log-level in Clustering configuration
Cluster packet log
The log file in which message packets passed between a Transformer and other nodes in the Transformer cluster are recorded.
Default file name: -
Configuration items: cluster-packet-logfile in Clustering configuration
Java module log
One log file is produced for each Java module loaded into Transformer
Default file name: java-module-name.log
Configuration items: module-logfile and log-level in Java Transformer Module configuration
Thread queue sizes log
The log file in which the size of thread queues are recorded.
Default file name: -
Configuration items: threads-queue-report-logfile and threads-queue-report-period in Pipeline threads configuration
Persistence event log
The log file in which events about persisting data are recorded.
Default file name: persistence.log
Configuration items: logfile and log-level in Persistence configuration
See also: