Packages

p

com.twitter.util

logging

package logging

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Type Members

  1. final class Logger extends Serializable

    A scala wrapper over a org.slf4j.Logger.

    A scala wrapper over a org.slf4j.Logger.

    The Logger is Serializable to support it's usage through the com.twitter.util.logging.Logging trait when the trait is mixed into a Serializable class.

    Annotations
    @SerialVersionUID()
  2. trait Logging extends AnyRef

    A scala-friendly Logging trait which:

    A scala-friendly Logging trait which:

    • lazily provides a logger named according to the class in which the trait is mixed
    • convenience methods to proxy calls to the lazily provided logger. These methods are explicitly call-by-name as they are mainly intended for use from Scala.
    class MyClass extends Logging {
      ...
      def foo: String = {
        info("In foo method")
        "Hello, world!"
      }
    }

    For more information, see util-slf4j-api/README.md

Value Members

  1. object Logger extends Serializable

    Companion object for com.twitter.util.logging.Logger which provides factory methods for creation.

    Companion object for com.twitter.util.logging.Logger which provides factory methods for creation.

    Note

    Java users, see com.twitter.util.logging.Loggers.getLogger

  2. object Loggers

    For Java usability.

    For Java usability.

    Note

    Scala users see com.twitter.util.logging.Logger

  3. object Slf4jBridgeUtility extends Logging

    A utility to safely install the slf4j-api SLF4JBridgeHandler.

    A utility to safely install the slf4j-api SLF4JBridgeHandler. The utility attempts to detect if the slf4j-jdk14 dependency is present on the classpath as it is unwise to install the jul-to-slf4j bridge with the slf4j-jdk14 dependency present as it may cause an infinite loop.

    If the SLF4JBridgeHandler is already installed we do not try to install it again.

    Additionally note there is a performance impact for bridging jul log messages in this manner. However, using the Logback LevelChangePropagator (> 0.9.25) can eliminate this performance impact.

    See also

    SLF4J: jul-to-slf4j bridge

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