feat: use rest namespace for lancedb java sdk (#2845)

After the refactoring on both client and server side, we should have the
ability to fully use lance REST namespace to call into LanceDB cloud and
enterprise. We can avoid having a JNI implementation (which today does
not really do anything except for vending a connection object), and just
use lance-core's RestNamespace.

We will at this moment have a LanceDbRestNamespaceBuilder to allow users
to more easily build the RestNamespace to talk to LanceDB Cloud or
Enterprise endpoint.

In the future, we could extend this further to also support the local
mode through DirectoryNamespace. That will be a separated PR.

.github/workflows/java-publish.yml

@@ -1,76 +1,35 @@
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 name: Build and publish Java packages
 on:
-  release:
-    types: [released]
+  push:
+    tags:
+      - "v*"
   pull_request:
     paths:
       - .github/workflows/java-publish.yml
 
 jobs:
-  macos-arm64:
-    name: Build on MacOS Arm64
-    runs-on: macos-14
-    timeout-minutes: 45
-    defaults:
-      run:
-        working-directory: ./java/core/lancedb-jni
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-      - uses: Swatinem/rust-cache@v2
-      - name: Install dependencies
-        run: |
-          brew install protobuf
-      - name: Build release
-        run: |
-          cargo build --release
-      - uses: actions/upload-artifact@v4
-        with:
-          name: liblancedb_jni_darwin_aarch64.zip
-          path: target/release/liblancedb_jni.dylib
-          retention-days: 1
-          if-no-files-found: error
-  linux-arm64:
-    name: Build on Linux Arm64
-    runs-on: warp-ubuntu-2204-arm64-8x
-    timeout-minutes: 45
-    defaults:
-      run:
-        working-directory: ./java/core/lancedb-jni
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-      - uses: Swatinem/rust-cache@v2
-      - uses: actions-rust-lang/setup-rust-toolchain@v1
-        with:
-          cache-workspaces: "./java/core/lancedb-jni"
-          # Disable full debug symbol generation to speed up CI build and keep memory down
-          # "1" means line tables only, which is useful for panic tracebacks.
-          rustflags: "-C debuginfo=1"
-      - name: Install dependencies
-        run: |
-          sudo apt -y -qq update
-          sudo apt install -y protobuf-compiler libssl-dev pkg-config
-      - name: Build release
-        run: |
-          cargo build --release
-      - uses: actions/upload-artifact@v4
-        with:
-          name: liblancedb_jni_linux_aarch64.zip
-          path: target/release/liblancedb_jni.so
-          retention-days: 1
-          if-no-files-found: error
-  linux-x86:
-    runs-on: warp-ubuntu-2204-x64-8x
+  publish:
+    name: Build and Publish
+    runs-on: ubuntu-24.04
     timeout-minutes: 30
-    needs: [macos-arm64, linux-arm64]
     defaults:
       run:
         working-directory: ./java
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
-      - uses: Swatinem/rust-cache@v2
       - name: Set up Java 8
         uses: actions/setup-java@v4
         with:
@@ -82,40 +41,30 @@ jobs:
           server-password: SONATYPE_TOKEN
           gpg-private-key: ${{ secrets.GPG_PRIVATE_KEY }}
           gpg-passphrase: ${{ secrets.GPG_PASSPHRASE }}
-      - name: Install dependencies
+      - name: Set git config
         run: |
-          sudo apt -y -qq update
-          sudo apt install -y protobuf-compiler libssl-dev pkg-config
-      - name: Download artifact
-        uses: actions/download-artifact@v4
-      - name: Copy native libs
-        run: |
-          mkdir -p ./core/target/classes/nativelib/darwin-aarch64 ./core/target/classes/nativelib/linux-aarch64
-          cp ../liblancedb_jni_darwin_aarch64.zip/liblancedb_jni.dylib ./core/target/classes/nativelib/darwin-aarch64/liblancedb_jni.dylib
-          cp ../liblancedb_jni_linux_aarch64.zip/liblancedb_jni.so ./core/target/classes/nativelib/linux-aarch64/liblancedb_jni.so
+          git config --global user.email "dev+gha@lancedb.com"
+          git config --global user.name "LanceDB Github Runner"
       - name: Dry run
         if: github.event_name == 'pull_request'
         run: |
-          mvn --batch-mode -DskipTests -Drust.release.build=true package
-      - name: Set github
-        run: |
-          git config --global user.email "LanceDB Github Runner"
-          git config --global user.name "dev+gha@lancedb.com"
-      - name: Publish with Java 8
-        if: github.event_name == 'release'
+          ./mvnw --batch-mode -DskipTests package -pl lancedb-core -am
+      - name: Publish
+        if: startsWith(github.ref, 'refs/tags/v')
         run: |
           echo "use-agent" >> ~/.gnupg/gpg.conf
           echo "pinentry-mode loopback" >> ~/.gnupg/gpg.conf
           export GPG_TTY=$(tty)
-          mvn --batch-mode -DskipTests -Drust.release.build=true -DpushChanges=false -Dgpg.passphrase=${{ secrets.GPG_PASSPHRASE }} deploy -P deploy-to-ossrh
+          ./mvnw --batch-mode -DskipTests -DpushChanges=false -Dgpg.passphrase=${{ secrets.GPG_PASSPHRASE }} deploy -pl lancedb-core -am -P deploy-to-ossrh
         env:
           SONATYPE_USER: ${{ secrets.SONATYPE_USER }}
           SONATYPE_TOKEN: ${{ secrets.SONATYPE_TOKEN }}
+
   report-failure:
     name: Report Workflow Failure
     runs-on: ubuntu-latest
-    needs: [linux-arm64, linux-x86, macos-arm64]
-    if: always() && (github.event_name == 'release' || github.event_name == 'workflow_dispatch')
+    needs: [publish]
+    if: always() && failure() && startsWith(github.ref, 'refs/tags/v')
     permissions:
       contents: read
       issues: write

.github/workflows/java.yml

@@ -1,118 +1,46 @@
-name: Build and Run Java JNI Tests
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: Build Java LanceDB Core
+
 on:
   push:
     branches:
       - main
     paths:
       - java/**
+      - .github/workflows/java.yml
   pull_request:
     paths:
       - java/**
-      - rust/**
       - .github/workflows/java.yml
-env:
-  # This env var is used by Swatinem/rust-cache@v2 for the cache
-  # key, so we set it to make sure it is always consistent.
-  CARGO_TERM_COLOR: always
-  # Disable full debug symbol generation to speed up CI build and keep memory down
-  # "1" means line tables only, which is useful for panic tracebacks.
-  RUSTFLAGS: "-C debuginfo=1"
-  RUST_BACKTRACE: "1"
-  # according to: https://matklad.github.io/2021/09/04/fast-rust-builds.html
-  # CI builds are faster with incremental disabled.
-  CARGO_INCREMENTAL: "0"
-  CARGO_BUILD_JOBS: "1"
+
 jobs:
-  linux-build-java-11:
-    runs-on: ubuntu-22.04
-    name: ubuntu-22.04 + Java 11
+  build-java:
+    runs-on: ubuntu-24.04
+    name: Build
     defaults:
       run:
         working-directory: ./java
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
-      - uses: Swatinem/rust-cache@v2
-        with:
-          workspaces: java/core/lancedb-jni
-      - uses: actions-rust-lang/setup-rust-toolchain@v1
-        with:
-          components: rustfmt
-      - name: Run cargo fmt
-        run: cargo fmt --check
-        working-directory: ./java/core/lancedb-jni
-      - name: Install dependencies
-        run: |
-          sudo apt update
-          sudo apt install -y protobuf-compiler libssl-dev
-      - name: Install Java 11
-        uses: actions/setup-java@v4
-        with:
-          distribution: temurin
-          java-version: 11
-          cache: "maven"
-      - name: Java Style Check
-        run: mvn checkstyle:check
-      # Disable because of issues in lancedb rust core code
-      # - name: Rust Clippy
-      #   working-directory: java/core/lancedb-jni
-      #   run: cargo clippy --all-targets -- -D warnings
-      - name: Running tests with Java 11
-        run: mvn clean test
-  linux-build-java-17:
-    runs-on: ubuntu-22.04
-    name: ubuntu-22.04 + Java 17
-    defaults:
-      run:
-        working-directory: ./java
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-      - uses: Swatinem/rust-cache@v2
-        with:
-          workspaces: java/core/lancedb-jni
-      - uses: actions-rust-lang/setup-rust-toolchain@v1
-        with:
-          components: rustfmt
-      - name: Run cargo fmt
-        run: cargo fmt --check
-        working-directory: ./java/core/lancedb-jni
-      - name: Install dependencies
-        run: |
-          sudo apt update
-          sudo apt install -y protobuf-compiler libssl-dev
-      - name: Install Java 17
+      - name: Set up Java 17
         uses: actions/setup-java@v4
         with:
           distribution: temurin
           java-version: 17
           cache: "maven"
-      - run: echo "JAVA_17=$JAVA_HOME" >> $GITHUB_ENV
       - name: Java Style Check
-        run: mvn checkstyle:check
-      # Disable because of issues in lancedb rust core code
-      # - name: Rust Clippy
-      #   working-directory: java/core/lancedb-jni
-      #   run: cargo clippy --all-targets -- -D warnings
-      - name: Running tests with Java 17
-        run: |
-          export JAVA_TOOL_OPTIONS="$JAVA_TOOL_OPTIONS \
-          -XX:+IgnoreUnrecognizedVMOptions \
-          --add-opens=java.base/java.lang=ALL-UNNAMED \
-          --add-opens=java.base/java.lang.invoke=ALL-UNNAMED \
-          --add-opens=java.base/java.lang.reflect=ALL-UNNAMED \
-          --add-opens=java.base/java.io=ALL-UNNAMED \
-          --add-opens=java.base/java.net=ALL-UNNAMED \
-          --add-opens=java.base/java.nio=ALL-UNNAMED \
-          --add-opens=java.base/java.util=ALL-UNNAMED \
-          --add-opens=java.base/java.util.concurrent=ALL-UNNAMED \
-          --add-opens=java.base/java.util.concurrent.atomic=ALL-UNNAMED \
-          --add-opens=java.base/jdk.internal.ref=ALL-UNNAMED \
-          --add-opens=java.base/sun.nio.ch=ALL-UNNAMED \
-          --add-opens=java.base/sun.nio.cs=ALL-UNNAMED \
-          --add-opens=java.base/sun.security.action=ALL-UNNAMED \
-          --add-opens=java.base/sun.util.calendar=ALL-UNNAMED \
-          --add-opens=java.security.jgss/sun.security.krb5=ALL-UNNAMED \
-          -Djdk.reflect.useDirectMethodHandle=false \
-          -Dio.netty.tryReflectionSetAccessible=true"
-          JAVA_HOME=$JAVA_17 mvn clean test
+        run: ./mvnw checkstyle:check
+      - name: Build and install
+        run: ./mvnw clean install