Switch java client project to use Maven instead of Gradle

.github/workflows/java-build.yml

@@ -11,11 +11,11 @@ jobs:
   java-gradle-build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
-    - uses: actions/setup-java@v3
+    - uses: actions/checkout@v4
+    - uses: actions/setup-java@v4
       with:
         distribution: zulu
         java-version: 8
-        cache: gradle
-    - name: Run Gradle
-      run: ./gradlew build
+        cache: maven
+    - name: Run Maven Build
+      run: ./mvnw clean package

.github/workflows/publish-snapshot.yml

@@ -1,33 +1,46 @@
 name: publish-snapshot
 on:
   workflow_dispatch:
+  push:
     branches:
       - 'main'
 jobs:
-  java-gradle-build:
+  java-maven-build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-java@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-java@v4
         with:
           distribution: zulu
           java-version: 8
-          cache: gradle
-      - name: Run Gradle Build
-        run: ./gradlew build
+          cache: maven
+      - name: Run Maven Build
+        run: ./mvnw clean package
   publish-snapshot-jar:
     runs-on: ubuntu-latest
-    needs: java-gradle-build
+    needs: java-maven-build
+    permissions:
+      contents: read
+      packages: write
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-java@v3
+      - uses: actions/checkout@v4
+      - name: Import GPG key
+        uses: crazy-max/ghaction-import-gpg@v5
+        with:
+          gpg_private_key: ${{ secrets.CLIENT_GPG_KEY }}
+          passphrase: ${{ secrets.CLIENT_GPG_PASSPHRASE }}
+      - name: Set up Java for Maven build
+        uses: actions/setup-java@v4
         with:
           distribution: zulu
           java-version: 8
-          cache: gradle
-      - name: Publish Snapshot
+          cache: maven
+          server-id: central-snapshots
+          server-username: MAVEN_USERNAME
+          server-password: MAVEN_PASSWORD
+      - name: Publish to Maven Central Repository
+        run: ./mvnw --batch-mode deploy
         env:
-          OSSRH_TOKEN: ${{ secrets.OSSRH_TOKEN }}
-          CLIENT_GPG_PASSPHRASE: ${{ secrets.CLIENT_GPG_PASSPHRASE }}
-          CLIENT_GPG_KEY: ${{ secrets.CLIENT_GPG_KEY }}
-        run: ./gradlew publish
+          MAVEN_USERNAME: ${{ secrets.CENTRAL_PORTAL_USERNAME }}
+          MAVEN_PASSWORD: ${{ secrets.CENTRAL_PORTAL_PASSWORD }}
+          GPG_PASSPHRASE: ${{ secrets.CLIENT_GPG_PASSPHRASE }}

.github/workflows/release-java-client.yml

@@ -8,34 +8,49 @@ on:
     branches:
       - 'main'
 jobs:
-  java-gradle-build:
+  java-maven-build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-java@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-java@v4
         with:
           distribution: zulu
           java-version: 8
-          cache: gradle
-      - name: Run Gradle Build
-        run: ./gradlew build
+          cache: maven
+      - name: Run Maven Build
+        run: ./mvnw clean package
   publish-jar:
     runs-on: ubuntu-latest
-    needs: java-gradle-build
+    needs: java-maven-build
+    permissions:
+      contents: read
+      packages: write
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-java@v3
+      - uses: actions/checkout@v4
+      - name: Import GPG key
+        uses: crazy-max/ghaction-import-gpg@v5
+        with:
+          gpg_private_key: ${{ secrets.CLIENT_GPG_KEY }}
+          passphrase: ${{ secrets.CLIENT_GPG_PASSPHRASE }}
+      - name: Set up Java for Maven build
+        uses: actions/setup-java@v4
         with:
           distribution: zulu
           java-version: 8
-          cache: gradle
+          cache: maven
+          server-id: central
+          server-username: MAVEN_USERNAME
+          server-password: MAVEN_PASSWORD
+      - name: Set Release Version
+        if: "${{ github.event.inputs.version != '' }}"
+        run: ./mvnw versions:set -DnewVersion=${{github.event.inputs.version}} -DgenerateBackupPoms=false
       - name: Publish Release Version
         if: "${{ github.event.inputs.version != '' }}"
+        run: ./mvnw --batch-mode deploy -DperformRelease=true
         env:
-          OSSRH_TOKEN: ${{ secrets.OSSRH_TOKEN }}
-          CLIENT_GPG_PASSPHRASE: ${{ secrets.CLIENT_GPG_PASSPHRASE }}
-          CLIENT_GPG_KEY: ${{ secrets.CLIENT_GPG_KEY }}
-        run: ./gradlew -Pversion=${{inputs.version}} publish
+          MAVEN_USERNAME: ${{ secrets.CENTRAL_PORTAL_USERNAME }}
+          MAVEN_PASSWORD: ${{ secrets.CENTRAL_PORTAL_PASSWORD }}
+          GPG_PASSPHRASE: ${{ secrets.CLIENT_GPG_PASSPHRASE }}
       - name: Handle Empty Version
         if: "${{ github.event.inputs.version == '' }}"
         run: echo Please specify a non empty release version

.gitignore

@@ -2,3 +2,4 @@ bin/
 .gradle/
 gradle/
 build/
+target/

.mvn/wrapper/maven-wrapper.properties

@@ -0,0 +1,19 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.
+wrapperVersion=3.3.2
+distributionType=only-script
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.9/apache-maven-3.9.9-bin.zip

README.md

@@ -118,19 +118,19 @@ The Tecton Java client is open source and we welcome any contributions from our
 ### Prerequisites
 
 * Java 8 or higher
-* Gradle
+* Maven
 * [Google Java Format](https://github.com/google/google-java-format) formatter (can also use as a plugin in your IDE)
 
 ### Build the Project
 
-The `tecton-http-client-java` project can be built using Gradle as follows:
+The `tecton-http-client-java` project can be built using Maven as follows:
 
-`./gradlew clean build`
+`./mvnw clean package`
 
 ## Basic end to end testing
 
 In the demo client [repository](https://github.com/tecton-ai/TectonClientDemo) update the `build.gradle` file with the
-jar that you generate from this repo using `./gradlew clean build`.
+jar that you generate from this repo using `./mvnw clean package`.
 
 1. Change the dependencies target to this and point the files attribute to your java client jar.
 2. Add the okhttp3 dependency from `tecton-http-client-java` to `build.gradle` in the demo client repository. This is
@@ -159,7 +159,7 @@ Update `tecton.properties` with your cluster url and run the Demo file to query
 ## Before Opening a PR
 
 * Please run pre-commit on your staged files to ensure that the changes are correctly formatted.
-* Please run `./gradlew clean build` to ensure that your changes pass the build
+* Please run `./mvnw clean package` to ensure that your changes pass the build
 * Please add unit tests if possible to test the new code changes
 
 ## License

buildkite/buildkite.yaml

@@ -1,8 +1,8 @@
-- command: ./gradlew clean build
+- command: ./mvnw clean package
   label: 'Build Java Client'
   key: "build"
 - wait
-- command: ./gradlew publish -i
+- command: ./mvnw deploy -i
   label: ':rocket: Publish Snapshot Jar'
   key: "deploy"
   depends_on: "build"