CODEWITHSUNDEEP
scalasbtakkaakka-httpakka-stream
ceran
ceran

Reputation: 1412

akka-http crashes when adding slf4j/logback

I have a working akka-http application. Now I tried adding logging via slf4j and logback and my application crashes.

build.sbt

libraryDependencies ++= Seq(
  "com.typesafe.akka" %% "akka-http" % "10.0.7",
  "ch.qos.logback" % "logback-classic" % "1.2.3",
  "com.typesafe.akka" %% "akka-slf4j" % "2.5.2"
)

application.conf

akka {
  loggers = ["akka.event.slf4j.Slf4jLogger"]
  loglevel = "DEBUG"
  logging-filter = "akka.event.slf4j.Slf4jLoggingFilter"
}

logback.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration debug="true">

    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
        </encoder>
    </appender>

    <root level="DEBUG">
        <appender-ref ref="STDOUT"/>
    </root>
</configuration>

error:

Detected java.lang.NoSuchMethodError error, which MAY be caused by incompatible Akka versions on the classpath. Please note that a given Akka version MUST be the same across all modules of Akka that you are using, e.g. if you use akka-actor [2.5.2 (resolved from current classpath)] all other core Akka modules MUST be of the same version. External projects like Alpakka, Persistence plugins or Akka HTTP etc. have their own version numbers - please make sure you're using a compatible set of libraries.

Uncaught error from thread [my-system-akka.actor.default-dispatcher-6] shutting down JVM since 'akka.jvm-exit-on-fatal-error' is enabled for ActorSystem[my-system] java.lang.NoSuchMethodError: akka.actor.ActorCell.addFunctionRef(Lscala/Function2;)Lakka/actor/FunctionRef;

According to the message, it's a compatibility issue. How do I find out which versions of akka-http and akka-slf4j are compatible (except trying out)?

On a side note, since it's a similar problem: I want to add akka-stream. However, using the newest versions of akka-http and akka-stream gives me eviction warnings in sbt. Same quesion as above: how do I find out which versions to use?

Upvotes: 0

Views: 438

Answers (1)

Paweł Motyl
Paweł Motyl

Reputation: 1342

Unfortunately akka-http is versioned separately from the rest of akka and the newest version of it does not necessarily use the newest version of akka. In case of akka-http version 10.0.7 the compatible akka version is 2.4.18. You can see it here. This means that you need to drop to that version in akka-slf4j dependency to run the application without problems.

Upvotes: 2

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