feat: slim bindings kotlin

.github/actions/setup-java/action.yaml

@@ -0,0 +1,57 @@
+# Copyright AGNTCY Contributors (https://github.com/agntcy)
+# SPDX-License-Identifier: Apache-2.0
+
+---
+
+name: Setup Java Environment
+description: setup environment to build/test/lint Kotlin applications
+inputs:
+  java-version:
+    description: 'Java version to install'
+    required: false
+    default: '21'
+  distribution:
+    description: 'Java distribution to use'
+    required: false
+    default: 'temurin'
+  cache-enabled:
+    description: 'Enable Gradle caching'
+    required: false
+    default: 'true'
+outputs:
+  cache-hit:
+    description: "Whether we hit the cache"
+    value: ${{ steps.gradle-cache.outputs.cache-hit }}
+runs:
+  using: "composite"
+  steps:
+    - name: Setup Java
+      uses: actions/setup-java@v4
+      with:
+        distribution: ${{ inputs.distribution }}
+        java-version: ${{ inputs.java-version }}
+        cache: false
+
+    - name: Setup Taskfile
+      uses: ./.github/actions/setup-task
+      with:
+        version: latest
+        cache-enabled: true
+
+    - name: Cache Gradle
+      if: ${{ inputs.cache-enabled == 'true' }}
+      id: gradle-cache
+      uses: actions/cache@v4
+      with:
+        path: |
+          ~/.gradle/caches
+          ~/.gradle/wrapper
+        key: gradle-cache-${{ runner.os }}-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+
+    - id: set-cache-hit
+      run: echo "cache-hit=${{ steps.gradle-cache.outputs.cache-hit }}" >> $GITHUB_OUTPUT
+      shell: bash
+
+    - name: Update GITHUB_PATH
+      run: echo "$HOME/.local/bin" >> $GITHUB_PATH
+      shell: bash

.github/workflows/reusable-bindings-build-and-test.yaml

@@ -277,6 +277,74 @@ jobs:
             ./data-plane/bindings/go/generated/**/*.h
           if-no-files-found: error
 
+  kotlin-bindings-build-and-test:
+    runs-on: ${{ inputs.runner }}
+    needs:
+      - generate-matrix
+      - build-libraries
+
+    defaults:
+      run:
+        shell: bash
+        working-directory: ./data-plane/bindings/kotlin
+
+    steps:
+      - name: Checkout Repo
+        uses: actions/checkout@v4
+
+      - name: Setup Rust
+        uses: ./.github/actions/setup-rust
+        with:
+          workspace: ${{ inputs.rust-workspace }}
+
+      - name: Setup Java
+        uses: ./.github/actions/setup-java
+
+      # Download all library artifacts
+      - name: Download libraries
+        uses: actions/download-artifact@v4
+        with:
+          merge-multiple: true
+          pattern: bindings-*
+          path: ./data-plane/bindings/kotlin/artifacts/
+
+      - name: List downloaded artifacts
+        run: |
+          echo "📦 Downloaded artifacts:"
+          find ./artifacts -type f -ls
+
+      - name: Generate Kotlin bindings
+        run: |
+          task generate LIB_PATH=./artifacts/lib${{ env.LIBRARY_NAME }}_x86_64_linux_gnu.so
+
+          echo "📁 Generated files:"
+          find ./generated -type f
+
+      - name: Make sure generation did not modify source files
+        run: |
+          if [[ -n "$(git status --porcelain)" ]]; then
+            echo "❌ Generated Kotlin bindings differ from committed files. Please commit the updated bindings."
+            git status
+            git --no-pager diff
+            exit 1
+          else
+            echo "✅ Generated Kotlin bindings are up-to-date with committed files."
+          fi
+
+      - name: Run Kotlin bindings tests
+        run: |
+          echo "Running Kotlin bindings tests..."
+          task test
+
+      - name: Upload Generated Kotlin code
+        uses: actions/upload-artifact@v4
+        with:
+          name: kotlin-bindings-generated-code
+          path: |
+            ./data-plane/bindings/kotlin/generated/**/*.kt
+            ./data-plane/bindings/kotlin/generated/jniLibs/**/*
+          if-no-files-found: error
+
   python-bindings-test:
     name: Test Python Wheels (${{ matrix.platform.target }})
     runs-on: ${{ matrix.platform.runner }}

.github/workflows/reusable-kotlin-build-and-test.yaml

@@ -0,0 +1,134 @@
+# Copyright AGNTCY Contributors (https://github.com/agntcy)
+# SPDX-License-Identifier: Apache-2.0
+
+---
+name: kotlin-build-and-test
+on:
+  workflow_call:
+    inputs:
+      runner:
+        description: Github hosted runner or Self hosted runner
+        required: false
+        type: string
+        default: ubuntu-latest
+      continue-on-error:
+        description: Whether to skip the status update for this job
+        required: false
+        type: boolean
+        default: false
+      java-version:
+        description: Java version to use
+        required: false
+        type: string
+        default: '21'
+      kotlin-test:
+        description: Whether to run "task test"
+        required: false
+        type: boolean
+        default: true
+      upload-artifacts:
+        description: Whether to upload build artifacts
+        required: false
+        type: boolean
+        default: false
+      working-directory:
+        description: The working directory to run the task
+        required: false
+        type: string
+        default: ./data-plane/bindings/kotlin
+
+jobs:
+  setup-environment:
+    runs-on: ${{ inputs.runner }}
+
+    defaults:
+      run:
+        shell: bash
+        working-directory: ${{ inputs.working-directory }}
+
+    steps:
+      - name: Checkout Repo
+        uses: actions/checkout@v4
+
+      - name: Setup Java
+        id: setup-java
+        uses: ./.github/actions/setup-java
+        with:
+          java-version: ${{ inputs.java-version }}
+
+      - name: Verify Java and Gradle versions
+        run: |
+          which java
+          java -version
+          ./gradlew --version
+
+  test:
+    runs-on: ${{ inputs.runner }}
+
+    defaults:
+      run:
+        shell: bash
+        working-directory: ${{ inputs.working-directory }}
+
+    if: ${{ inputs.kotlin-test }}
+
+    needs: [setup-environment]
+
+    steps:
+      - name: Checkout Repo
+        uses: actions/checkout@v4
+
+      - name: Setup Java
+        uses: ./.github/actions/setup-java
+        with:
+          java-version: ${{ inputs.java-version }}
+
+      - name: Cache Gradle Build
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+            ${{ inputs.working-directory }}/build
+          key: kotlin-test-${{ runner.os }}-gradle-build-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+
+      - name: Run Kotlin Tests
+        run: |
+          which java
+          java -version
+
+          task test
+
+      - name: Upload Test Results
+        if: always()
+        uses: actions/upload-artifact@v4
+        with:
+          name: kotlin-test-results
+          path: ${{ inputs.working-directory }}/build/reports/tests/test/
+          if-no-files-found: ignore
+          retention-days: 7
+
+  upload-artifacts:
+    runs-on: ${{ inputs.runner }}
+
+    defaults:
+      run:
+        shell: bash
+        working-directory: ${{ inputs.working-directory }}
+
+    if: ${{ inputs.upload-artifacts }}
+
+    needs: [setup-environment, test]
+
+    steps:
+      - name: Checkout Repo
+        uses: actions/checkout@v4
+
+      - name: Upload Generated Kotlin code
+        uses: actions/upload-artifact@v4
+        with:
+          name: kotlin-bindings-generated-code
+          path: |
+            ${{ inputs.working-directory }}/generated/**/*.kt
+            ${{ inputs.working-directory }}/generated/jniLibs/**/*
+          if-no-files-found: error

data-plane/bindings/kotlin/.gitignore

@@ -0,0 +1,62 @@
+# Copyright AGNTCY Contributors (https://github.com/agntcy)
+# SPDX-License-Identifier: Apache-2.0
+
+# Gradle
+.gradle/
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!gradle/wrapper/gradle-wrapper.properties
+
+# Kotlin
+*.class
+*.jar
+*.war
+*.nar
+*.ear
+*.zip
+*.tar.gz
+*.rar
+*.iml
+*.ipr
+*.iws
+
+# IntelliJ IDEA
+.idea/
+out/
+*.iml
+
+# Eclipse
+.classpath
+.project
+.settings/
+bin/
+
+# NetBeans
+nbproject/
+build/
+nbbuild/
+dist/
+nbdist/
+
+# VS Code
+.vscode/
+
+# macOS
+.DS_Store
+
+# UniFFI generated code
+generated/
+
+# Native libraries
+*.so
+*.dylib
+*.dll
+*.a
+*.lib
+
+# Logs
+*.log
+
+# Test results
+test-results/
+test-reports/