Announcing Akka 1.2
Roland Kuhn
Akka implements a unique hybrid of:
- Actors, which gives you:
- Simple and high-level abstractions for concurrency and parallelism.
- Asynchronous, non-blocking and highly performant event-driven programming model.
- Very lightweight event-driven threads (create ~13 million actors on 8 G RAM).
- High-availability through supervisor hierarchies with let-it-crash semantics. Excellent for writing highly fault-tolerant systems that never stop, systems that self-heal.
- Software Transactional Memory (STM).
- Transactors: combine actors and STM into transactional actors. Allows you to compose atomic message flows with automatic retry and rollback.
- Remote actors: highly performant distributed actors with remote supervision and error management.
- Agents & Dataflow Concurrency
- Java and Scala API.
Highlights:
- Actor: more information and hooks during restart, invocation tracing
- Future: implicit timeouts/dispatchers, onTimeout callback
- TestKit: extended to FSM including event log, introduced TestProbe
- back-port of durable mailboxes
- uses Scala 2.9.1
http://akka.io/docs/akka/1.2/project/release-notes.html
And closed tickets for this milestone can be found in the issue tracker here:
https://www.assembla.com/spaces/akka/milestones/356697-1-2
Documentation can be found here:
http://akka.io/docs/
The source code is on github. This release is tagged v1.2:
https://github.com/jboner/akka/tree/v1.2
https://github.com/jboner/akka-modules/tree/v1.2
The Akka Maven repository is:
http://akka.io/repository/
Downloads can be found at:
http://akka.io/downloads/
Roland Kuhn
Typesafe – Enterprise-Grade Scala from the Experts
twitter: @rolandkuhn
Michael Nascimento
Regards,
Michael
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Jonas Bonér
Jonas Bonér
CTO
Typesafe <http://www.typesafe.com/> - Enterprise-Grade Scala from the
Experts
Phone: +46 733 777 123
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√iktor Ҡlang
Great work guys, I'm damn proud!
Cheers,
V
Jonas Bonér
Damn proud it is.
--
Jonas Bonér
CTO
Typesafe - Enterprise-Grade Scala from the Experts
Phone: +46 733 777 123
Twitter: @jboner
wookietreiber
do I have to consider something special using sbt compared to 1.1.3 ?
... because:
val akkaVersion = "1.2"
val typesafe = "Typesafe Repository" at "http://repo.typesafe.com/typesafe/releases/"
val akka = "Akka Repo" at "http://akka.io/repository/"
val actor = "se.scalablesolutions.akka" % "akka-actor" % akkaVersion
val remote = "se.scalablesolutions.akka" % "akka-remote" % akkaVersion
... as well as:
val actor = "se.scalablesolutions.akka" %% "akka-actor" % akkaVersion
val remote = "se.scalablesolutions.akka" %% "akka-remote" % akkaVersion
results in:
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: UNRESOLVED DEPENDENCIES ::
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: se.scalablesolutions.akka#akka-actor_2.9.1;1.2: not found
[warn] :: se.scalablesolutions.akka#akka-remote_2.9.1;1.2: not found
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
for both typesafe and akka repo, for projects with:
libraryDependencies ++= Seq (
actor, remote
)
also I believe the sbt documentation, e.g. for the tutorial chat server is
outdated and it would be nice to have this updated to the recent sbt version.
--
best regards
Christian Krause aka wookietreiber
---------------------------------------------
heute schon gelacht? http://www.totaberlustig.com/comics/2011-09-15-Taxi.jpg
Roland Kuhn
I have just created a fresh project using the akka-sbt-plugin and “update” succeeded; the problem exhibited by your message is the attached Scala version in the artifact name, which we don’t do for Akka. Are you sure that you get the exact same behavior when using single-% in the declaration of the dependencies?
Concerning the documentation vs. SBT version: yes, the chat server example is using SBT 0.7, but all the other “Getting Started” guides point out the SBT 0.10 syntax. I filed a ticket so we don’t forget to update it, though.
Regards,
Roland
wookietreiber
it'd work, because iirc sbt wiki at github says that projects built with
sbt should be declared with %% and akka is built using sbt, right?
... I'm sorry, its not exactly the same, I tried again with just one %
to double-check:
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: UNRESOLVED DEPENDENCIES ::
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: se.scalablesolutions.akka#akka-actor;1.2: not found
[warn] :: se.scalablesolutions.akka#akka-remote;1.2: not found
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
... this time no scala version, but it doesn't work either for both
repositories.
I can't remember using the akka-sbt-plugin for any of my projects using 1.1.3
and everything worked just fine ... I wonder why.
is optional/recommended to use the plugin or mandatory?
√iktor Ҡlang
I originally used % instead of %%. I tried %% out of curiosity to try if
it'd work, because iirc sbt wiki at github says that projects built with
sbt should be declared with %% and akka is built using sbt, right?
... I'm sorry, its not exactly the same, I tried again with just one %
to double-check:
[warn] :: se.scalablesolutions.akka#akka-actor;1.2: not found
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: UNRESOLVED DEPENDENCIES ::
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: se.scalablesolutions.akka#akka-remote;1.2: not found
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
... this time no scala version, but it doesn't work either for both
repositories.
I can't remember using the akka-sbt-plugin for any of my projects using 1.1.3
and everything worked just fine ... I wonder why.
Viktor Klang
Akka Tech Lead
wookietreiber
>
>
> On Mon, Sep 19, 2011 at 10:18 PM, wookietreiber <kizkizz...@googlemail.com
> > wrote:
>
> I originally used % instead of %%. I tried %% out of curiosity to try if
> it'd work, because iirc sbt wiki at github says that projects built with
> sbt should be declared with %% and akka is built using sbt, right?
>
> ... I'm sorry, its not exactly the same, I tried again with just one %
> to double-check:
>
> [warn] ::::::::::::::::::::::::::::::::::::::::::::::
> [warn] :: UNRESOLVED DEPENDENCIES ::
> [warn] ::::::::::::::::::::::::::::::::::::::::::::::
> [warn] :: se.scalablesolutions.akka#akka-actor;1.2: not found
> [warn] :: se.scalablesolutions.akka#akka-remote;1.2: not found
> [warn] ::::::::::::::::::::::::::::::::::::::::::::::
>
> ... this time no scala version, but it doesn't work either for both
> repositories.
>
> I can't remember using the akka-sbt-plugin for any of my projects using
> 1.1.3
> and everything worked just fine ... I wonder why.
>
>
>
> Well they're definitely there: http://akka.io/repository/se/scalablesolutions/
> akka/akka-remote/1.2/
that was the first thing I checked, the typesafe repo, too, which got me
confused in the first place
> Can you check so your ModuleConfiguration for "se.scalablesolutions" is
> pointing towards akka.io?
what exactly do you mean by "ModuleConfiguration" and where do I check it ?
> Viktor Klang
>
> Akka Tech Lead
> Typesafe - Enterprise-Grade Scala from the Experts
>
> Twitter: @viktorklang
>
>
√iktor Ҡlang
Patrik Nordwall
Patrik Nordwall
Typesafe - Enterprise-Grade Scala from the Experts
Twitter: @patriknw
gutzeit
Roland Kuhn
Whats is the delta between 1.2 final release and 1.2 RC6 ?
wookietreiber
fresh test project Build.scala (which is like my other builds):
---begin Build.scala
-----------------------------------------------------------
import sbt._
import Keys._
import Resolvers._
import Dependencies._
import BuildSettings._
object BuildSettings {
val buildOrganization = "foo"
val buildVersion = "0.0.1"
val buildScalaVersion = "2.9.1"
val akkaVersion = "1.2"
val buildSettings = Defaults.defaultSettings ++ Seq (
organization := buildOrganization,
version := buildVersion,
scalaVersion := buildScalaVersion
)
}
object FooBuild extends Build {
lazy val root = Project (
"bar",
file ("."),
settings = buildSettings ++ Seq (
libraryDependencies ++= Seq ( akkaActor, specs2 )
)
)
}
object Dependencies {
val akkaActor = "se.scalablesolutions.akka" % "akka-actor" %
akkaVersion
val specs2 = "org.specs2" %% "specs2" % "1.6.1" % "test"
}
object Resolvers {
---end Build.scala
-----------------------------------------------------------
sbt
> update
...
[warn] :: UNRESOLVED DEPENDENCIES ::
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: se.scalablesolutions.akka#akka-actor;1.2: not found
...
any ideas, suggestions, ... ?
On 20 Sep., 07:58, Patrik Nordwall <patrik.nordw...@gmail.com> wrote:
> Are you using sbt 0.10?
> The tip for module configurations only applies to 0.7.
>
> Or define the corresponding resolvers and libraryDependencies in your scala
> build file.
>
> Have you really defined the typesafe resolver (in your original post you
> have not)?
> This must be added to project settings:
> resolvers += "Typesafe Repo" at "http://repo.typesafe.com/typesafe/releases/
> "
>
> I have verified with one of my projects and 1.2 downloads fine.
>
>
>
>
>
>
>
>
>
> > On Mon, Sep 19, 2011 at 10:47 PM, wookietreiber <
> > kizkizzbangb...@googlemail.com> wrote:
>
> >> On Mon, Sep 19, 2011 at 10:34:30PM +0200, √iktor Ҡlang wrote:
>
> >> > On Mon, Sep 19, 2011 at 10:18 PM, wookietreiber <
>
> Erfahren Sie mehr »
wookietreiber
I simply forgot to add the repo(s) to the resolvers of my
buildSettings because I thought it wasn't necessary because everything
worked before. I guess it worked before, because originally I used
something like:
cat projects/test2/build.sbt
name := "My Project"
version := "1.0"
scalaVersion := "2.9.1"
resolvers += "Typesafe Repository" at "http://repo.typesafe.com/
typesafe/releases/"
libraryDependencies += "se.scalablesolutions.akka" % "akka-actor" %
"1.2"
and the dependency was already in my ivy cache ...
sry for all the confusion.
best regards
wookietreiber
On 19 Sep., 22:47, wookietreiber <kizkizzbangb...@googlemail.com>
> On Mon, Sep 19, 2011 at 10:34:30PM +0200, √iktor Ҡlang wrote:
>
> > > > Christian Krause aka wookietreiber
>
> > > > ---------------------------------------------
>
> > > > heute schon gelacht? http://www.totaberlustig.com/comics/
> > 2011-09-15-Taxi.jpg
>
> > > > --
> > > > You received this message because you are subscribed to the Google
> > Groups "Akka User List" group.
> > > > To post to this group, send email to akka...@googlegroups.com.
>
> Erfahren Sie mehr »
wookietreiber
I simply forgot to add the repo(s) to the resolvers of my
buildSettings because I thought it wasn't necessary because everything
worked before. I guess it worked before, because originally I used
something like:
cat projects/test2/build.sbt
name := "My Project"
version := "1.0"
scalaVersion := "2.9.1"
typesafe/releases/"
libraryDependencies += "se.scalablesolutions.akka" % "akka-actor" %
"1.2"
and the dependency was already in my ivy cache ...
sry for all the confusion.
best regards
wookietreiber
On 19 Sep., 22:47, wookietreiber <kizkizzbangb...@googlemail.com>
> On Mon, Sep 19, 2011 at 10:34:30PM +0200, √iktor Ҡlang wrote:
>
> > > > Christian Krause aka wookietreiber
>
> > > > ---------------------------------------------
>
> > > > heute schon gelacht? http://www.totaberlustig.com/comics/
> > 2011-09-15-Taxi.jpg
>
> > > > --
> > > > You received this message because you are subscribed to the Google
> > Groups "Akka User List" group.
> > > > To post to this group, send email to akka...@googlegroups.com.
>
> Erfahren Sie mehr »
Roland Kuhn
Thanks,
Roland
wookietreiber
val buildSettings = Defaults.defaultSettings ++ Seq (
organization := buildOrganization,
version := buildVersion,
+ scalaVersion := buildScalaVersion,
+ resolvers += typesafe
)
--