Logger class

Main logd interface.

Use this class for logging operations. It provides methods to retrieve loggers with hierarchical support, global fallback logger, and configuration options.

This class acts as a proxy to the logger's configuration, resolving values dynamically from the Logger tree hierarchy on each access for up-to-date settings.

Properties

autoSinkBuffer → bool: Whether to auto-sink abandoned buffers.
no setter
debugBuffer → LogBuffer?: Returns a buffer for building multi-line debug-level logs.
no setter
enabled → bool: Whether logging is enabled for this logger.
no setter
errorBuffer → LogBuffer?: Returns a buffer for building multi-line error-level logs.
no setter
explicitFields → Set<String>: The set of fields that have been explicitly configured on this logger.
no setter
frozenFields → Set<String>: The set of fields that were frozen on this logger by freezeInheritance.
no setter
handlers → List<Handler>: List of handlers to process log entries.
no setter
hashCode → int: The hash code for this object.
no setterinherited
includeFileLineInHeader → bool: Resolves the effective includeFileLineInHeader for this logger.
no setter
includeOrigin → bool: Resolves the effective includeOrigin for this logger.
no setter
infoBuffer → LogBuffer?: Returns a buffer for building multi-line info-level logs.
no setter
inheritedFields → Set<String>: The set of fields that are currently inherited from ancestor loggers.
no setter
logLevel → LogLevel: The minimum level to log (events below this are dropped).
no setter
name → String: Logger's unique name
final
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
stackMethodCount → Map<LogLevel, int>: Map of how many stack frames to include per log level.
no setter
stackTraceParser → StackTraceParser: The stack trace parser configuration.
no setter
timestamp → Timestamp: The timestamp formatter configuration.
no setter
traceBuffer → LogBuffer?: Returns a buffer for building multi-line trace-level logs.
no setter
warningBuffer → LogBuffer?: Returns a buffer for building multi-line warning-level logs.
no setter

Methods

buffer(LogLevel level, {int? maxEntries}) → LogBuffer?: Returns a buffer for building multi-line logs at the specified level.
debug(Object? message, {Map<String, dynamic>? context, Object? error, StackTrace? stackTrace}) → void: Logs a debug-level message.
error(Object? message, {Map<String, dynamic>? context, Object? error, StackTrace? stackTrace}) → void: Logs an error-level message.
freezeInheritance({bool force = false}) → int: Freezes the current inherited configurations into descendant loggers.
info(Object? message, {Map<String, dynamic>? context, Object? error, StackTrace? stackTrace}) → void: Logs an info-level message.
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
toString() → String: A string representation of this object.
inherited
trace(Object? message, {Map<String, dynamic>? context, Object? error, StackTrace? stackTrace}) → void: Logs a trace-level message.
unfreezeInheritance({Set<String>? fields, bool includeSelf = true}) → void: Unfreezes configurations that were previously frozen on descendant loggers.
warning(Object? message, {Map<String, dynamic>? context, Object? error, StackTrace? stackTrace}) → void: Logs a warning-level message.

Operators

operator ==(Object other) → bool: The equality operator.
inherited

Static Properties

fallbackHandler ↔ void Function(LogEntry entry, Object? error, StackTrace? stackTrace)?: Callback triggered when all configured handlers fail.
getter/setter pair
maxHierarchyDepth ↔ int: The maximum hierarchy depth allowed before a warning is printed. Defaults to 10.
getter/setter pair

Static Methods

configure(String name, {bool? enabled, LogLevel? logLevel, bool? includeFileLineInHeader, bool? includeOrigin, Map<LogLevel, int>? stackMethodCount, Timestamp? timestamp, StackTraceParser? stackTraceParser, List<Handler>? handlers, bool? autoSinkBuffer}) → void: Configures a logger's properties, updating the config in-place.
configureMultiple(Map<String, LoggerConfig> configurations) → void: Configures multiple loggers at once, applying their properties in-place.
configurePattern(String pattern, {bool? enabled, LogLevel? logLevel, bool? includeFileLineInHeader, bool? includeOrigin, Map<LogLevel, int>? stackMethodCount, Timestamp? timestamp, StackTraceParser? stackTraceParser, List<Handler>? handlers, bool? autoSinkBuffer}) → void: Configures loggers matching a wildcard or regular expression pattern.
exportConfig() → Map<String, dynamic>: Exports the current configurations of all loggers registered.
exportHierarchy() → Map<String, dynamic>: Exports the registry configuration hierarchy.
formatHierarchy() → String: Returns a formatted string representation of the active logger hierarchy.
get([String? name]) → Logger: Basic: Logger.get('app').info('Message');

Global: Logger.get(), Logger.get(''), Logger.get('global')
importConfig(Map<String, dynamic> configData) → void: Imports and applies configurations exported via exportConfig.
printHierarchy({void sink(String)?}) → void: Prints a visual representation of the active logger hierarchy.
removePattern(String pattern) → void: Removes a pattern rule from the pattern configuration rules list.
reset([String? loggerName]) → void: Clears the logger registry for the specified loggerName and all its descendants, restoring them to default unresolved settings.