From 3e4b3e69a58eee72be3faf73fd2d1b789254e068 Mon Sep 17 00:00:00 2001
From: Arun Sharma <arun@sharma-home.net>
Date: Sat, 30 May 2026 10:08:07 -0700
Subject: [PATCH] Add Java native library CI

---
 .github/workflows/java.yml | 51 ++++++++++++++++++++++++++++++++++
 build.gradle               | 22 ++++++++++-----
 download-native-libs.sh    | 57 ++++++++++++++++++++++++++++++++++++++
 3 files changed, 123 insertions(+), 7 deletions(-)
 create mode 100644 .github/workflows/java.yml
 create mode 100755 download-native-libs.sh

diff --git a/.github/workflows/java.yml b/.github/workflows/java.yml
new file mode 100644
index 0000000..beb33df
--- /dev/null
+++ b/.github/workflows/java.yml
@@ -0,0 +1,51 @@
+name: Java
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+  workflow_dispatch:
+    inputs:
+      nativeRunId:
+        description: "Optional LadybugDB/ladybug Java native library workflow run ID"
+        required: false
+        type: string
+
+jobs:
+  build-and-test:
+    name: Build and test
+    strategy:
+      matrix:
+        runner: [ubuntu-24.04, ubuntu-24.04-arm, macos-14]
+    runs-on: ${{ matrix.runner }}
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: "21"
+
+      - name: Download native libraries
+        env:
+          GH_TOKEN: ${{ github.token }}
+          LBUG_JAVA_NATIVE_RUN_ID: ${{ inputs.nativeRunId }}
+        run: ./download-native-libs.sh
+
+      - name: Prepare test datasets
+        run: |
+          git clone --depth 1 https://github.com/LadybugDB/go-ladybug ../go-ladybug
+          mkdir -p ../../dataset/tinysnb ../../dataset/tinysnb-serial
+          cp -R ../go-ladybug/dataset/tinysnb/. ../../dataset/tinysnb/
+          cp ../go-ladybug/dataset/tinysnb/vMoviesSerial.csv ../../dataset/tinysnb-serial/vMovies.csv
+
+      - name: Build
+        env:
+          SKIP_CMAKE_BUILD: "true"
+        run: ./gradlew build -x test
+
+      - name: Test
+        env:
+          SKIP_CMAKE_BUILD: "true"
+        run: ./gradlew test
diff --git a/build.gradle b/build.gradle
index 3b6c5fb..4386ccd 100644
--- a/build.gradle
+++ b/build.gradle
@@ -11,14 +11,22 @@ java {
 
 group = 'com.ladybugdb'
 def projectRoot = projectDir.parentFile.parentFile
-def cmakeFile = new File(projectRoot, 'CMakeLists.txt').text
-def versionLine = cmakeFile.readLines().find { it.startsWith('project(Lbug VERSION ') }
-def cmakeVersion = versionLine.split(' ')[2]
-def versionParts = cmakeVersion.split('\\.')
-if (versionParts.length > 3) {
-    version = versionParts[0] + '.' + versionParts[1] + '.' + versionParts[2] + '-SNAPSHOT'
+def cmakeFileRef = new File(projectRoot, 'CMakeLists.txt')
+if (!cmakeFileRef.exists()) {
+    cmakeFileRef = new File(projectDir.parentFile, 'ladybug/CMakeLists.txt')
+}
+if (cmakeFileRef.exists()) {
+    def cmakeFile = cmakeFileRef.text
+    def versionLine = cmakeFile.readLines().find { it.startsWith('project(Lbug VERSION ') }
+    def cmakeVersion = versionLine.split(' ')[2]
+    def versionParts = cmakeVersion.split('\\.')
+    if (versionParts.length > 3) {
+        version = versionParts[0] + '.' + versionParts[1] + '.' + versionParts[2] + '-SNAPSHOT'
+    } else {
+        version = cmakeVersion
+    }
 } else {
-    version = cmakeVersion
+    version = providers.environmentVariable('LBUG_JAVA_VERSION').orElse('0.0.0-SNAPSHOT').get()
 }
 
 println "Project version: $version"
diff --git a/download-native-libs.sh b/download-native-libs.sh
new file mode 100755
index 0000000..0d6d460
--- /dev/null
+++ b/download-native-libs.sh
@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+REPOSITORY="${LBUG_GITHUB_REPOSITORY:-LadybugDB/ladybug}"
+RUN_ID="${LBUG_JAVA_NATIVE_RUN_ID:-}"
+TARGET_DIR="${LBUG_JAVA_NATIVE_TARGET_DIR:-src/main/resources}"
+
+OS="$(uname -s)"
+ARCH="$(uname -m)"
+
+case "$OS:$ARCH" in
+  Linux:x86_64)
+    ARTIFACT_NAME="java-lib-linux-x86_64"
+    ;;
+  Linux:aarch64|Linux:arm64)
+    ARTIFACT_NAME="java-lib-linux-aarch64"
+    ;;
+  Darwin:arm64)
+    ARTIFACT_NAME="java-lib-osx-arm64"
+    ;;
+  MINGW*:x86_64|MSYS*:x86_64|CYGWIN*:x86_64)
+    ARTIFACT_NAME="java-lib-win-x86_64"
+    ;;
+  *)
+    echo "Unsupported platform for Java native libraries: $OS $ARCH" >&2
+    exit 1
+    ;;
+esac
+
+if [ -z "$RUN_ID" ]; then
+  if ! command -v gh >/dev/null 2>&1; then
+    echo "gh CLI is required when LBUG_JAVA_NATIVE_RUN_ID is not set" >&2
+    exit 1
+  fi
+  while IFS= read -r candidate_run_id; do
+    if gh api "/repos/${REPOSITORY}/actions/runs/${candidate_run_id}/artifacts" \
+      --jq '.artifacts[].name' | grep -qx "$ARTIFACT_NAME"; then
+      RUN_ID="$candidate_run_id"
+      break
+    fi
+  done < <(gh run list --repo "$REPOSITORY" --workflow "Build and Deploy" --status success \
+    --limit 20 --json databaseId --jq '.[].databaseId')
+fi
+
+if [ -z "$RUN_ID" ]; then
+  echo "Unable to resolve a workflow run with artifact $ARTIFACT_NAME" >&2
+  exit 1
+fi
+
+TMPDIR="$(mktemp -d)"
+trap 'rm -rf "$TMPDIR"' EXIT
+
+mkdir -p "$TARGET_DIR"
+gh run download "$RUN_ID" --repo "$REPOSITORY" --name "$ARTIFACT_NAME" --dir "$TMPDIR"
+find "$TMPDIR" -type f -name 'liblbug_java_native*' -exec cp {} "$TARGET_DIR/" \;
+
+echo "Installed $ARTIFACT_NAME from $REPOSITORY run $RUN_ID into $TARGET_DIR"