Scruid can now cross-build for Scala 2.11, 2.12 and 2.13.
All dependencies have been upgraded, in order to support Scala 2.13. The changes are outlined below:
Circe related changes
Streaming JSON support with Circe is provided by akka-streams-json v0.4.0. However, Circe from version 0.12.0-M4 and later dropped the support for Scala 2.11. As a result, for Scala 2.11 builds, Scruid depends on version 0.11.1 of Circe, while for Scala 2.12+ builds depends on Circe version 0.12.1.
In the current version of Scruid, trait io.circe.java8.time.JavaTimeDecoders is provided by the artifact circe-java8 and is only available in Circe v0.11.1. In Scruid, trait JavaTimeDecoders is extended by DruidResult and DruidClient. For recent versions of Circe (e.g., 0.12.1), as it has been noted here, the java.time instances are now included in the Encoder and Decoder companion objects and therefore the artifact circe-java8 does not exists anymore. To overcome that issue, trait JavaTimeDecoders in Scruid is being replaced by a new utility trait ing.wbaa.druid.client.CirceDecoders which is defined differently per Scala version (see SBT Scala-version specific source directory). For instance, trait CirceDecoders for Scala 2.11 is defined in src/main/scala-2.11/ing/wbaa/druid/client/CirceDecoders.scala and extends the JavaTimeDecoders:
While the same trait for Scala 2.12 is defined in src/main/scala-2.12/ing/wbaa/druid/client/CirceDecoders.scala and does not extends JavaTimeDecoders.
Scala 2.13 related changes
Minor code changes in ing.wbaa.druid.client.DruidAdvancedHttpClient and ing.wbaa.druid.dql.DQLSpec to address the follow warnings in Scala 2.13:
The unicode arrow ⇒ is deprecated, use => instead.
symbol literal is deprecated; use Symbol("") instead.
object JavaConverters in package collection is deprecated (since 2.13.0): Use scala.jdk.CollectionConverters instead
method copyArrayToImmutableIndexedSeq in class LowPriorityImplicits2 is deprecated (since 2.13.0): Implicit conversions from Array to immutable.IndexedSeq are implemented by copying; Use the more efficient non-copying ArraySeq.unsafeWrapArray or an explicit toIndexedSeq call
use -Ywarn-unused:imports insted of -Ywarn-unused-import
CircleCI
When cross-building I was getting java.lang.OutOfMemoryError: Metaspace in CircleCI (not locally). Although I changed the memory settings in .sbtopts as well as in .cicleci/config.yml (e.g., Xmx4G and XX:MaxMetaspaceSize=512M) I was still getting java.lang.OutOfMemoryError: Metaspace. As a result, I also defined separate runs in .cicleci/config.yml, each one for the desired Scala version:
Scruid can now cross-build for Scala 2.11, 2.12 and 2.13.
All dependencies have been upgraded, in order to support Scala 2.13. The changes are outlined below:
Circe related changes
Streaming JSON support with Circe is provided by akka-streams-json v0.4.0. However, Circe from version 0.12.0-M4 and later dropped the support for Scala 2.11. As a result, for Scala 2.11 builds, Scruid depends on version 0.11.1 of Circe, while for Scala 2.12+ builds depends on Circe version 0.12.1.
In the current version of Scruid, trait
io.circe.java8.time.JavaTimeDecodersis provided by the artifactcirce-java8and is only available in Circe v0.11.1. In Scruid, traitJavaTimeDecodersis extended byDruidResultandDruidClient. For recent versions of Circe (e.g., 0.12.1), as it has been noted here, thejava.timeinstances are now included in theEncoderandDecodercompanion objects and therefore the artifactcirce-java8does not exists anymore. To overcome that issue, traitJavaTimeDecodersin Scruid is being replaced by a new utility traiting.wbaa.druid.client.CirceDecoderswhich is defined differently per Scala version (see SBT Scala-version specific source directory). For instance, traitCirceDecodersfor Scala 2.11 is defined insrc/main/scala-2.11/ing/wbaa/druid/client/CirceDecoders.scalaand extends theJavaTimeDecoders:While the same trait for Scala 2.12 is defined in
src/main/scala-2.12/ing/wbaa/druid/client/CirceDecoders.scalaand does not extendsJavaTimeDecoders.Scala 2.13 related changes
Minor code changes in
ing.wbaa.druid.client.DruidAdvancedHttpClientanding.wbaa.druid.dql.DQLSpecto address the follow warnings in Scala 2.13:⇒is deprecated, use=>instead.scala.jdk.CollectionConvertersinsteadSince symbol literal is now deprecated in Scala 2.13, the documentation examples use the
d"some_dim"notation for dimensions.Compiler settings for Scala 2.13:
-Xmax-classfile-name(see Remove -Xmax-classfile-length; hard-code to 240)-Ywarn-unused:importsinsted of-Ywarn-unused-importCircleCI
When cross-building I was getting
java.lang.OutOfMemoryError: Metaspacein CircleCI (not locally). Although I changed the memory settings in.sbtoptsas well as in.cicleci/config.yml(e.g., Xmx4G and XX:MaxMetaspaceSize=512M) I was still gettingjava.lang.OutOfMemoryError: Metaspace. As a result, I also defined separate runs in.cicleci/config.yml, each one for the desired Scala version: