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Set up project, initial impl for K8sDnsNameResolver (#4)
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‎.github/workflows/ci.yml‎

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name: ci
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on:
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push:
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branches: [ main ]
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pull_request:
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jobs:
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build:
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runs-on: ubuntu-latest
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steps:
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- uses: actions/checkout@v5
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with:
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# fetch tags - tags are needed for versionPolicyCheck binary and source compat checks
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fetch-tags: true
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- uses: coursier/cache-action@v6
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- uses: actions/setup-java@v5
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with:
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java-version: 17
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distribution: temurin
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cache: sbt
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- uses: sbt/setup-sbt@v1
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- name: sbt build
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run: sbt clean build

‎.sbtopts‎

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# for using sbt-java-formatter on newer JDKs:
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-J--add-opens=java.base/java.lang=ALL-UNNAMED
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-J--add-opens=java.base/java.util=ALL-UNNAMED
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-J--add-exports=jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED
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-J--add-exports=jdk.compiler/com.sun.tools.javac.file=ALL-UNNAMED
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-J--add-exports=jdk.compiler/com.sun.tools.javac.parser=ALL-UNNAMED
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-J--add-exports=jdk.compiler/com.sun.tools.javac.tree=ALL-UNNAMED
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-J--add-exports=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED

‎.scalafmt.conf‎

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# Main goals:
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# - nicer commit diffs (trailing commas, no alignment for pattern matching, force new lines)
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# - better interop with default IntelliJ IDEA setup (matching import and modifiers sorting logic)
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# - better developer experience on laptop screens (like 16' MBPs) with IntelliJ IDEA (line wraps)
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version = 3.9.9
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runner.dialect = scala213source3
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fileOverride {
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"glob:**/scala-3/**/*.scala" {runner.dialect = scala3}
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}
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# only format files tracked by git
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project.git = true
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maxColumn = 110
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trailingCommas = always
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preset = default
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# do not align to make nicer commit diffs
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align.preset = none
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indent {
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# altering defnSite and extendSite to have this:
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# final class MyErr extends RuntimeException(
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# "super error message",
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# )
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# instead of this:
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# final class MyErr extends RuntimeException(
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# "super error message",
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# )
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defnSite = 2
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extendSite = 0
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}
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spaces {
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# makes string interpolation with curlies more visually distinct
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inInterpolatedStringCurlyBraces = true
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}
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newlines {
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# keep author new lines where possible
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source = keep
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# force new line after "(implicit" for multi-line arg lists
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implicitParamListModifierForce = [after]
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avoidForSimpleOverflow = [
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tooLong, # if the line would be too long even after newline inserted, do nothing
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slc, # do nothing if overflow caused by single line comment
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]
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}
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verticalMultiline {
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atDefnSite = true
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arityThreshold = 4 # more than 3 args in a list will be turned vertical
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newlineAfterOpenParen = true # for nicer commit diffs
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}
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# for nicer commit diffs - forces new line before last parenthesis:
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# class MyCls(
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# arg1: String,
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# arg2: String,
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# ) extends MyTrait {
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#
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# without it:
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# class MyCls(
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# arg1: String,
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# arg2: String) extends MyTrait {
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danglingParentheses.exclude = []
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docstrings {
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# easier to view diffs in IDEA on 16' MBP screen if docs max line are shorter than code
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wrapMaxColumn = 90
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# next settings make it similar to the default IDEA javadoc formatting
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style = Asterisk
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oneline = unfold
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blankFirstLine = unfold
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}
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rewrite.rules = [
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Imports,
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RedundantParens,
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SortModifiers,
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prefercurlyfors,
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]
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# put visibility modifier first
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rewrite.sortModifiers.preset = styleGuide
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# Import sorting as similar as possible to scalafix's "OrganizeImports.preset = INTELLIJ_2020_3".
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# Scalafix is not used as its commands mess up "all .." build aliases and it takes long time to run,
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# while its code semantic based features are not needed here.
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# I.e. detection of unused imports is done with Scala compiler options.
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rewrite.imports {
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sort = ascii
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groups = [
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[".*"],
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["java\\..*", "javax\\..*", "scala\\..*"],
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]
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}

‎build.sbt‎

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import Dependencies.*
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import sbt.*
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ThisBuild / organization := "com.evolution.jgrpc.tools"
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ThisBuild / startYear := Some(2025)
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ThisBuild / homepage := Some(url("https://github.com/evolution-gaming/grpc-java-tools"))
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ThisBuild / licenses := Seq(("MIT", url("https://opensource.org/licenses/MIT")))
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ThisBuild / organizationName := "Evolution"
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ThisBuild / organizationHomepage := Some(url("https://evolution.com"))
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// Maven Central requires <developers> in published pom.xml files
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ThisBuild / developers := List(
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Developer(
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id = "migesok",
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name = "Mikhail Sokolov",
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email = "mikhail.g.sokolov@gmail.com",
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url = url("https://github.com/migesok"),
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),
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)
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ThisBuild / scmInfo := Some(ScmInfo(
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browseUrl = url("https://github.com/evolution-gaming/grpc-java-tools"),
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connection = "git@github.com:evolution-gaming/grpc-java-tools.git",
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))
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// not sure if bincompat check works for Java code, put it here just in case
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ThisBuild / versionPolicyIntention := Compatibility.BinaryCompatible
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// this is a Java project, setting a fixed Scala version just in case
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ThisBuild / scalaVersion := "2.13.16"
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// setting pure-Java module build settings
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ThisBuild / crossPaths := false // drop off Scala suffix from artifact names.
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ThisBuild / autoScalaLibrary := false // exclude scala-library from dependencies
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ThisBuild / javacOptions := Seq("-source", "17", "-target", "17", "-Werror", "-Xlint:all")
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ThisBuild / doc / javacOptions := Seq("-source", "17", "-Xdoclint:all", "-Werror")
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// common test dependencies:
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ThisBuild / libraryDependencies ++= Seq(
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// to be able to run JUnit 5+ tests:
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"com.github.sbt.junit" % "jupiter-interface" % JupiterKeys.jupiterVersion.value,
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Slf4j.simple,
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).map(_ % Test)
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// common compile dependencies:
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ThisBuild / libraryDependencies ++= Seq(
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jspecify, // JSpecify null-check annotations
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)
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lazy val root = project.in(file("."))
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.settings(
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name := "grpc-java-tools-root",
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description := "Evolution grpc-java tools - root",
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publish / skip := true,
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)
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.aggregate(
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k8sDnsNameResolver,
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)
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lazy val k8sDnsNameResolver = project.in(file("k8s-dns-name-resolver"))
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.settings(
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name := "k8s-dns-name-resolver",
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description := "Evolution grpc-java tools - DNS-based name resolver for Kubernetes services",
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libraryDependencies ++= Seq(
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Grpc.api,
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Slf4j.api,
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dnsJava,
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),
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)
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addCommandAlias("fmt", "all scalafmtAll scalafmtSbt javafmtAll")
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addCommandAlias(
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"build",
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"all scalafmtCheckAll scalafmtSbtCheck javafmtCheckAll versionPolicyCheck Compile/doc test",
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)

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