logger library

Classes

AdvancedFileOutput

Accumulates logs in a buffer to reduce frequent disk, writes while optionally switching to a new log file if it reaches a certain size.

AnsiColor

This class handles colorizing of terminal output.

ConsoleOutput

Default implementation of LogOutput.

DateTimeFormat

DevelopmentFilter

Prints all logs with level >= Logger.level while in development mode (eg when asserts are evaluated, Flutter calls this debug mode).

FileOutput

HybridPrinter

A decorator for a LogPrinter that allows for the composition of different printers to handle different log messages. Provide it's constructor with a base printer, but include named parameters for any levels that have a different printer:

LogEvent

LogFilter

An abstract filter of log messages.

LogfmtPrinter

Outputs a logfmt message:

Logger

Use instances of logger to send log messages to the LogPrinter.

LogOutput

Log output receives a OutputEvent from LogPrinter and sends it to the desired destination.

LogPrinter

An abstract handler of log events.

MemoryOutput

Buffers OutputEvents.

MultiOutput

Logs simultaneously to multiple LogOutput outputs.

OutputEvent

PrefixPrinter

A decorator for a LogPrinter that allows for the prepending of every line in the log output with a string for the level of that log. For example:

PrettyPrinter

Default implementation of LogPrinter.

ProductionFilter

Prints all logs with level >= Logger.level even in production.

SimplePrinter

Outputs simple log messages:

StreamOutput

Enums

Level

Levels to control logging output. Logging can be enabled to include all levels above certain Level.

Typedefs

DateTimeFormatter = String Function(DateTime time)

LogCallback = void Function(LogEvent event)

OutputCallback = void Function(OutputEvent event)