CompositeLogger

Implements: Logger

Description

The CompositeLogger class allows you to aggregate loggers from component references into a single component.

Important points

• It allows to log messages and conveniently send them to multiple destinations.

References

• *:logger:*:*:1.0 - (optional) ILogger components to pass log messages

Constructors

NewCompositeLoggerFromReferences

Creates a new instance of the logger.

NewCompositeLoggerFromReferences(ctx context.Context, references refer.IReferences) *CompositeLogger

• ctx: context.Context - operation context.
• references: refer.IReferences - references to locate the component dependencies.

NewCompositeLogger

Creates a new instance of the logger.

NewCompositeLogger() *CompositeLogger

Methods

SetReferences

Sets references to dependent components.

(c *CompositeLogger) SetReferences(ctx context.Context, references refer.IReferences)

• ctx: context.Context - operation context.
• references: refer.IReferences - references to locate the component dependencies.

Write

Writes a log message to the logger destination.

(c *CompositeLogger) Write(ctx context.Context, level LevelType, correlationId string, err error, message string)

• ctx: context.Context - operation context.
• level: LevelType - log level.
• correlationId: string - (optional) transaction id used to trace execution through the call chain.
• err: error - error object associated with this message.
• message: string - human-readable message to log.

Examples

type MyComponent {
	_logger CompositeLogger
}
func (mc* MyComponent) Configure(ctx context.Context, config ConfigParams) {
	mc._logger.Configure(ctx, config)
	...
}

func (mc* MyComponent) SetReferences(ctx context.Context, references IReferences) {
	mc._logger.SetReferences(ctx, references)
	...
}

func (mc* MyComponent) myMethod(ctx context.Context, string correlationId) {
	mc._logger.Debug(ctx context.Context, correlationId, "Called method mycomponent.mymethod");
	...
}
var mc MyComponent = MyComponent{}
mc._logger = NewCompositeLogger()

See also

• ILogger