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lagom scala giter8 sbt

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Use multi-word name on travis

For new users wanting to generate a project with a name consisting of more than one word,

I love this improvement. How about a change on .travis.yml to demo the use of multi-word projects?

    - SCRIPT="sbt new file://$(pwd) --name='Hello World Steve' --organization=org.eggsample && cd hello-world-steve && sbt test"

At the moment there's no Travis job using the default properties so either that or an explicit use of multi word could help.

Originally posted by @ignasi35 in #45 (comment)

cat not set "lagom-version"

I followed this document 👍 https://www.lagomframework.com/documentation/1.6.x/java/GettingStartedSbt.html,
and I can't set lagom-version. How to fix it?

Add lagomLogback dependency and a logback.xml sample

It'd be good to have logback enabled and configured by default on the seeds.

Maven metadata not found

When trying to follow the quickstart instructions for scala I run into the following error:

$ sbt new lagom/lagom-scala.g8
[info] Loading global plugins from /Users/slyons/.sbt/1.0/plugins
[info] Set current project to projects (in build file:/opt/dev/projects/)
[info] Set current project to projects (in build file:/opt/dev/projects/)

Maven metadata not found for `maven(com.lightbend.lagom, lagom-sbt-plugin)`
Tried: https://repo1.maven.org/maven2/com/lightbend/lagom/lagom-sbt-plugin/maven-metadata.xml

I'm sure I just don't have my sources set up correctly but if there's a fix it should be documented.

Push template files into src/main/g8

With template files in an isolated folder src/main/g8 this project and the project generator templates won't have to share any file (readme.md, .gitiognore,...).

See lagom/lagom-java.g8@4bc1e08

Update application loader to implement describeService instead of describeServices

See lagom/lagom#829. This will require Lagom 1.3.6.

Gateway http://localhost:9000/api/hello/123 fails with java.net.SocketException: Invalid argument

If you try http://localhost:9000/api/hello/123, you'd get:

2019-01-14T00:47:46.420Z [error] akka.actor.ActorSystemImpl [sourceThread=application-akka.actor.default-dispatcher-19, akkaSource=akka.actor.ActorSystemImpl(application), sourceActorSystem=application, akkaTimestamp=00:47:46.419UTC] - Internal server error, sending 500 response
akka.stream.StreamTcpException: Tcp command [Connect(0.0.0.0:58859,None,List(),Some(10 seconds),true)] failed because of java.net.SocketException: Invalid argument
Caused by: java.net.SocketException: Invalid argument
	at sun.nio.ch.Net.connect0(Native Method)
	at sun.nio.ch.Net.connect(Net.java:454)
	at sun.nio.ch.Net.connect(Net.java:446)
	at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:648)
	at akka.io.TcpOutgoingConnection.$anonfun$register$1(TcpOutgoingConnection.scala:87)

However, if you access hello-stream service directly on the port 58859, it'll work correctly (i.e., http://localhost:58859/api/hello/123 works).

Reproduction steps:

Downloaded scala-sbt lagom example from TechHub.
Imported it into Intellij.
Ran sbt runAll task.

Note: New to Lagom & might be totally mistaken :-)

Naming a project with a hyphen creates an invalid keyspace name

See discussion in lagom/lagom#156.

You can work around this by editing <project-name>-impl/src/main/resources/application.conf and changing it to a valid keyspace name by removing the hyphens or changing them to underscores.

Lagom 1.6 checklist

remove ddata settings (see lagom/lagom#2007)
remove serialization-bindings settings (lagom/lagom#2008)
use Lagom 1.6.0-M4

Replace hardcoded version with Maven Central lookup

g8 supports declaring default property values as Maven Central lookups (with some filtering too).

Template not working with M1 MacBook

Hi, I'm following the Hello World tutorial found here and I ran into this issue:

WARNING: All illegal access operations will be denied in a future release
06/24 13:22:07 ERROR[main] o.a.c.u.NativeLibraryDarwin - Failed to link the C library against JNA. Native methods will be unavailable.
java.lang.UnsatisfiedLinkError: Can't load library: /var/folders/dh/kynylzv95_vdqywhs1tw1v140000gn/T/jna--931221768/jna17123803835026746100.tmp
	at java.base/java.lang.ClassLoader.loadLibrary(ClassLoader.java:2633) ~[na:na]
	at java.base/java.lang.Runtime.load0(Runtime.java:768) ~[na:na]
	at java.base/java.lang.System.load(System.java:1837) ~[na:na]
	at com.sun.jna.Native.loadNativeDispatchLibraryFromClasspath(Native.java:851) ~[cassandra-bundle.jar:1.0.0-M0+46-b373604e]
	at com.sun.jna.Native.loadNativeDispatchLibrary(Native.java:826) ~[cassandra-bundle.jar:1.0.0-M0+46-b373604e]
	at com.sun.jna.Native.<clinit>(Native.java:140) ~[cassandra-bundle.jar:1.0.0-M0+46-b373604e]
	at org.apache.cassandra.utils.NativeLibraryDarwin.<clinit>(NativeLibraryDarwin.java:53) ~[cassandra-bundle.jar:1.0.0-M0+46-b373604e]
	at org.apache.cassandra.utils.NativeLibrary.<clinit>(NativeLibrary.java:88) ~[cassandra-bundle.jar:1.0.0-M0+46-b373604e]
	at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:196) ~[cassandra-bundle.jar:1.0.0-M0+46-b373604e]
	at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:602) ~[cassandra-bundle.jar:1.0.0-M0+46-b373604e]
	at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:691) ~[cassandra-bundle.jar:1.0.0-M0+46-b373604e]
06/24 13:22:07 ERROR[main] o.a.c.s.CassandraDaemon - The native library could not be initialized properly.

From my research, it suggests the issue is caused by a JNA compatibility with the embedded Cassandra.

I've verified on my machine that I have jna-5.12.0.jar.

Can you assist with this?

JDK:
openjdk version "11.0.19" 2023-04-18 LTS
OpenJDK Runtime Environment Corretto-11.0.19.7.1 (build 11.0.19+7-LTS)
OpenJDK 64-Bit Server VM Corretto-11.0.19.7.1 (build 11.0.19+7-LTS, mixed mode)

Scala:
Scala code runner version 2.13.11 -- Copyright 2002-2023, LAMP/EPFL and Lightbend, Inc.

Machine:
Apple M1
2020 MacBook Pro

Sync with Java template

Capturing a conversation between me and @ignasi35.

@TimMoore: I see that the lagom-java.g8 and lagom-scala.g8 templates have totally different implementations of the streaming service. Which one is better?

@ignasi35: IMHO, the java one is better because it’s the only of the two showing the subscription side of a broker topic.

In readme, describe how to run

Use lowercase in package names

We should port lagom/lagom-java.g8#9 here.

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