Quickstart

This is a set of tools for logging. Configurable, concise, handy.

Installation

Add these dependencies into your project:

Tofu Logging

"tf.tofu" %% "tofu-logging" % "0.14.0"
"tf.tofu" %% "tofu-logging-derivation" % "0.14.0"

logging requires an instance of the Delay typeclass, which can be created by hand, or can be imported from an according package:

Cats Effect 3 users should add the following dependency:

"tf.tofu" %% "tofu-core-ce3" % "0.14.0"

and Cats Effect 2 users should add:

"tf.tofu" %% "tofu-core-ce2" % "0.14.0"

For ZIO users the following is enough:

"tf.tofu" %% "tofu-zio2-logging" % "0.14.0" // OR:
"tf.tofu" %% "tofu-zio-logging" % "0.14.0"

See also ZIO1, ZIO2 Logging sections.

Quick demo

import tofu.syntax.logging._
import tofu.logging.Logging
import derevo.derive
import tofu.logging.derivation.loggable

type CardNumber = String //could be a newtype

@derive(loggable)
case class Client(name: String, @hidden cardNumber: CardNumber, id: UUID)

def processPayment[F[_] : Monad : Logging](client: Client, amount: Long): F[Result] =
  for {
    _ <- info"Processing payment for $client"
    _ <- warn"Amount $amount is lower than zero!".whenA(amount < 0)
    result <- processData(client, amount, "USD")
      .onError(errorCause"Got error on processing payment for $client"(_))
  } yield result

What’s next

• Discover the key features
• Get to know the core concepts
• Learn how to use the syntax
• Find a way to use logging suitable for you in the recipes
• Check out the examples

Old documentation

You can also visit obsolete documentation here.