Init

.github/workflows/deploy.yml

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+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+# This workflow will build a Java project with Gradle and cache/restore any dependencies to improve the workflow execution time
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-java-with-gradle
+
+name: Deploy to central
+
+on: workflow_dispatch
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    uses: ./.github/workflows/gradle.yml
+  deploy:
+    needs: build
+    strategy:
+      matrix:
+        include:
+          - target: publishKotlinMultiplatformPublicationToSonatypeRepository
+            os: macos-latest
+          - target: publishIosArm64PublicationToSonatypeRepository
+            os: macos-latest
+          - target: publishIosSimulatorArm64PublicationToSonatypeRepository
+            os: macos-latest
+          - target: publishAndroidDebugPublicationToSonatypeRepository
+            os: ubuntu-latest
+          - target: publishAndroidReleasePublicationToSonatypeRepository
+            os: ubuntu-latest
+          - target: publishJvmPublicationToSonatypeRepository
+            os: ubuntu-latest
+          - target: publishLinuxX64PublicationToSonatypeRepository
+            os: ubuntu-latest
+    runs-on: ${{ matrix.os }}
+    steps:
+    - uses: actions/checkout@v3
+    - uses: actions/cache@v3
+      with:
+        path: |
+          ~/.konan
+        key: ${{ runner.os }}-${{ hashFiles('**/.lock') }}
+    - name: Import GPG key
+      uses: crazy-max/ghaction-import-gpg@v5
+      with:
+        gpg_private_key: ${{ secrets.OSSRH_GPG_SECRET_KEY }}
+        passphrase: ${{ secrets.OSSRH_GPG_SECRET_KEY_PASSWORD }}
+    - name: Set up JDK 17
+      uses: actions/setup-java@v3
+      with:
+        java-version: '17'
+        distribution: 'temurin'
+    - name: Gradle publish
+      uses: gradle/gradle-build-action@ce999babab2de1c4b649dc15f0ee67e6246c994f
+      with:
+        arguments: |
+          ${{ matrix.target }}
+          closeSonatypeStagingRepository
+          -Psigning.gnupg.passphrase=${{secrets.OSSRH_GPG_SECRET_KEY_PASSWORD}}
+          -Psigning.gnupg.keyName=${{secrets.OSSRH_GPG_SECRET_KEY_ID}}
+          -PsonatypeUsername=${{secrets.OSSRH_USERNAME}}
+          -PsonatypePassword=${{secrets.OSSRH_PASSWORD}}
+

.github/workflows/gradle.yml

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+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+# This workflow will build a Java project with Gradle and cache/restore any dependencies to improve the workflow execution time
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-java-with-gradle
+
+name: Java CI with Gradle
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+  workflow_call:
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        include:
+          - target: iosSimulatorArm64Test
+            os: macos-latest
+          - target: jvmTest
+            os: ubuntu-latest
+          - target: linuxX64Test
+            os: ubuntu-latest
+          - target: testDebugUnitTest
+            os: ubuntu-latest
+          - target: testReleaseUnitTest
+            os: ubuntu-latest
+    runs-on: ${{ matrix.os }}
+
+    steps:
+    - uses: actions/checkout@v3
+    - uses: actions/cache@v3
+      with:
+        path: |
+          ~/.konan
+        key: ${{ runner.os }}-${{ hashFiles('**/.lock') }}
+    - name: Set up JDK 17
+      uses: actions/setup-java@v3
+      with:
+        java-version: '17'
+        distribution: 'temurin'
+    - name: Build with Gradle
+      uses: gradle/gradle-build-action@ce999babab2de1c4b649dc15f0ee67e6246c994f
+      with:
+        arguments: ${{ matrix.target }}

.gitignore

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+/.idea/
+/build/
+/.gradle/
+/convention-plugins/.gradle/
+/convention-plugins/build/
+.envrc

build.gradle.kts

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+import org.jetbrains.kotlin.gradle.ExperimentalKotlinGradlePluginApi
+
+plugins {
+    kotlin("multiplatform") version "1.9.0"
+    id("com.android.library")
+    id("convention.publication")
+}
+
+group = "com.github.asm0dey"
+version = "0.0.1.2"
+
+repositories {
+    google()
+    mavenCentral()
+}
+
+@OptIn(ExperimentalKotlinGradlePluginApi::class)
+kotlin {
+    targetHierarchy.default()
+    jvm {
+        compilations.all {
+            kotlinOptions.jvmTarget = "1.8"
+        }
+        testRuns["test"].executionTask.configure {
+            useJUnitPlatform()
+        }
+    }
+    android {
+        publishLibraryVariants("release", "debug")
+    }
+    iosArm64 {
+        binaries {
+            framework {
+                baseName = "library"
+            }
+        }
+    }
+    iosSimulatorArm64() {
+        binaries {
+            framework {
+                baseName = "library"
+            }
+        }
+    }
+    linuxX64()
+    sourceSets {
+        val commonTest by getting {
+            dependencies {
+                implementation(kotlin("test"))
+            }
+        }
+    }
+}
+
+android {
+    namespace = "com.github.asm0dey.dummylib"
+    compileSdk = 33
+    defaultConfig {
+        minSdk = 24
+        targetSdk = 33
+    }
+    buildTypes {
+        getByName("release") {
+            isMinifyEnabled = false
+        }
+    }
+}

convention-plugins/build.gradle.kts

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+plugins {
+    `kotlin-dsl` // Is needed to turn our build logic written in Kotlin into the Gradle Plugin
+}
+
+repositories {
+    gradlePluginPortal() // To use 'maven-publish' and 'signing' plugins in our own plugin
+}
+
+dependencies {
+    implementation("io.github.gradle-nexus.publish-plugin:io.github.gradle-nexus.publish-plugin.gradle.plugin:2.0.0-rc-1")
+}

convention-plugins/src/main/kotlin/convention.publication.gradle.kts

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+import org.gradle.api.publish.maven.MavenPublication
+import org.gradle.api.tasks.bundling.Jar
+import org.gradle.kotlin.dsl.`maven-publish`
+import org.gradle.kotlin.dsl.signing
+
+plugins {
+    `maven-publish`
+    signing
+    id("io.github.gradle-nexus.publish-plugin")
+}
+
+
+val javadocJar by tasks.registering(Jar::class) {
+    archiveClassifier.set("javadoc")
+}
+
+nexusPublishing {
+    // Configure maven central repository
+    repositories {
+        sonatype()
+    }
+
+
+    // Configure all publications
+}
+
+publishing {
+    publications.withType<MavenPublication> {
+        // Stub javadoc.jar artifact
+        artifact(javadocJar.get())
+
+        // Provide artifacts information requited by Maven Central
+        pom {
+            name.set("Dummy Kotlin Multiplatform library")
+            description.set("Dummy library to test deployment to Maven Central")
+            url.set("https://github.com/asm0dey/dummylib-multiplatform")
+
+            licenses {
+                license {
+                    name.set("MIT")
+                    url.set("https://opensource.org/licenses/MIT")
+                }
+            }
+            developers {
+                developer {
+                    id.set("asm0dey")
+                    name.set("Pasha Finkelshteyn")
+                    email.set("[email protected]")
+                }
+            }
+            scm {
+                url.set("https://github.com/asm0dey/dummylib-multiplatform")
+            }
+        }
+    }
+}
+
+val gpgKeyId by extra { System.getenv("secrets.OSSRH_GPG_SECRET_KEY_ID") }
+val gpgKey by extra { System.getenv("secrets.OSSRH_GPG_SECRET_KEY") }
+val gpgKeyPassword by extra { System.getenv("secrets.OSSRH_GPG_SECRET_KEY_PASSWORD") }
+signing {
+    useGpgCmd()
+    sign(publishing.publications)
+}

gradle.properties

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+kotlin.code.style=official
+kotlin.mpp.androidSourceSetLayoutVersion=2
+android.useAndroidX=true
+org.gradle.jvmargs=-Xmx4096m
+# Improves build time via enabling the gradle build cache
+org.gradle.caching=true
+org.gradle.configuration-cache=true
+

gradle/wrapper/gradle-wrapper.properties

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+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.6.2-bin.zip
+networkTimeout=10000
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists