Bump gradle/actions from 3.5.0 to 4.0.0 in /.github/workflows

.github/dependabot.yml

@@ -10,7 +10,7 @@ updates:
     reviewers:
       - "reactor/core-team"
     # updates in the oldest maintenance branch, we'll forward-merge up to main
-    target-branch: "3.4.x"
+    target-branch: "3.6.x"
     ignore:
       # JSR166 backport is fixed
       - dependency-name: "io.projectreactor:jsr166"
@@ -59,4 +59,4 @@ updates:
     reviewers:
       - "reactor/core-team"
     # updates in oldest maintenance branch, we'll forward-merge up to main
-    target-branch: "3.4.x"
+    target-branch: "3.6.x"

.github/pull_request_template.md

@@ -0,0 +1,22 @@
+<!-- 
+Thanks for contributing to Project Reactor. Please review the following notes
+about formatting your PR description.
+-->
+
+<!-- What changes from the user's perspective? -->
+
+
+<!-- Next paragraph contains more technical details -->
+
+
+<!-- The footer can contain the issue references: -->
+<!-- See #{OPTIONAL_REF}. -->
+<!-- Fixes #{ISSUE}. -->
+
+<!--
+The PR description will be used to craft a final squash merge commit
+and the title will be used in release notes, so please keep them up-to-date.
+More detailed description of the commit message convention:
+https://github.com/reactor/.github/blob/main/CONTRIBUTING.md#black_nib-commit-message-convention
+https://github.com/reactor/.github/blob/main/CONTRIBUTING.md#message-convention
+-->

.github/setup.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+set -ex
+
+###########################################################
+# JAVA
+###########################################################
+
+mkdir -p /opt/openjdk
+pushd /opt/openjdk > /dev/null
+JDK_URL="https://github.com/AdoptOpenJDK/openjdk9-binaries/releases/download/jdk-9.0.4%2B11/OpenJDK9U-jdk_x64_linux_hotspot_9.0.4_11.tar.gz"
+mkdir java9
+pushd java9 > /dev/null
+curl -L ${JDK_URL} --output OpenJDK9U-jdk_x64_linux_hotspot_9.0.4_11.tar.gz

.github/workflows/ci.yml

@@ -10,16 +10,34 @@ jobs:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # tag=v4
         with:
           fetch-depth: 0 #needed by spotless
-      - uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # tag=v3
+      - name: Download JDK 9
+        if: contains('main 3.6.x', github.base_ref)
+        run: ${GITHUB_WORKSPACE}/.github/setup.sh
+        shell: bash
+      - name: Setup JDK 9
+        if: contains('main 3.6.x', github.base_ref)
+        uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # tag=v3
+        with:
+          distribution: 'jdkfile'
+          java-version: 9.0.4
+          jdkFile: /opt/openjdk/java9/OpenJDK9U-jdk_x64_linux_hotspot_9.0.4_11.tar.gz
+      - name: Setup JDK 21
+        if: contains('main 3.6.x', github.base_ref)
+        uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # tag=v3
+        with:
+          distribution: 'temurin'
+          java-version: 21
+      - name: Setup JDK 8
+        uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # tag=v3
         with:
           distribution: 'temurin'
           java-version: 8
-      - uses: gradle/actions/setup-gradle@d9c87d481d55275bb5441eef3fe0e46805f9ef70 # tag=v3
+      - uses: gradle/actions/setup-gradle@af1da67850ed9a4cedd57bfd976089dd991e2582 # tag=v3
         name: spotless (license header)
         if: always()
         with:
           arguments: spotlessCheck -PspotlessFrom=origin/${{ github.base_ref }}
-      - uses: gradle/actions/setup-gradle@d9c87d481d55275bb5441eef3fe0e46805f9ef70 # tag=v3
+      - uses: gradle/actions/setup-gradle@af1da67850ed9a4cedd57bfd976089dd991e2582 # tag=v3
         name: api compatibility
         if: always()
         with:
@@ -47,17 +65,39 @@ jobs:
         test-type:
           - type: core
             arguments: ":reactor-core:test --no-daemon"
+          - type: core-java21
+            arguments: ":reactor-core:java21Test --no-daemon"
+          - type: core-java9
+            arguments: ":reactor-core:java9Test --no-daemon"
           - type: other
-            arguments: "check -x :reactor-core:test -x spotlessCheck -Pjcstress.mode=sanity --no-daemon"
+            arguments: "check -x :reactor-core:test -x :reactor-core:java21Test -x :reactor-core:java9Test -x spotlessCheck -Pjcstress.mode=sanity --no-daemon"
     name: ${{ matrix.test-type.type }} tests
     needs: preliminary
     steps:
     - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # tag=v4
-    - uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # tag=v3
+    - name: Download Java 9
+      if: contains('main 3.6.x', github.base_ref)
+      run: ${GITHUB_WORKSPACE}/.github/setup.sh
+      shell: bash
+    - name: Setup Java 9
+      if: contains('main 3.6.x', github.base_ref)
+      uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # tag=v3
+      with:
+        distribution: 'jdkfile'
+        java-version: 9.0.4
+        jdkFile: /opt/openjdk/java9/OpenJDK9U-jdk_x64_linux_hotspot_9.0.4_11.tar.gz
+    - name: Setup Java 21
+      if: contains('main 3.6.x', github.base_ref)
+      uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # tag=v3
+      with:
+        distribution: 'temurin'
+        java-version: 21
+    - name: Setup Java 8
+      uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # tag=v3
       with:
         distribution: 'temurin'
         java-version: 8
-    - uses: gradle/actions/setup-gradle@d9c87d481d55275bb5441eef3fe0e46805f9ef70 # tag=v3
+    - uses: gradle/actions/setup-gradle@af1da67850ed9a4cedd57bfd976089dd991e2582 # tag=v3
       name: Run Gradle Tests
       with:
         arguments: ${{ matrix.test-type.arguments }}

.github/workflows/full.yml

@@ -0,0 +1,53 @@
+name: Full Check
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: "0 14 * * 0"
+permissions: read-all
+jobs:
+  run-tests:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        branch: [ 3.5.x, 3.6.x, main ]
+        test-type:
+          - type: core
+            arguments: ":reactor-core:test --no-daemon"
+          - type: other # includes java21Test and java9Test for 3.6+
+            arguments: "check -x :reactor-core:test -x spotlessCheck -x :reactor-core:jcstress --no-daemon"
+          - type: jcstress
+            arguments: ":reactor-core:jcstress -Pjcstress.mode=quick --no-daemon"
+    name: Test on ${{ matrix.branch }} - ${{ matrix.test-type.type }} tests
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # tag=v4
+        with:
+          ref: ${{ matrix.branch }}
+      - name: Download Java 9
+        if: contains('main 3.6.x', matrix.branch)
+        run: ${GITHUB_WORKSPACE}/.github/setup.sh
+        shell: bash
+      - name: Setup Java 9
+        if: contains('main 3.6.x', matrix.branch)
+        uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # tag=v3
+        with:
+          distribution: 'jdkfile'
+          java-version: 9.0.4
+          jdkFile: /opt/openjdk/java9/OpenJDK9U-jdk_x64_linux_hotspot_9.0.4_11.tar.gz
+      - name: Setup Java 21
+        if: contains('main 3.6.x', matrix.branch)
+        uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # tag=v3
+        with:
+          distribution: 'temurin'
+          java-version: 21
+      - name: Setup Java 8
+        uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # tag=v3
+        with:
+          distribution: 'temurin'
+          java-version: 8
+      - name: Run Gradle Tests
+        uses: gradle/actions/setup-gradle@af1da67850ed9a4cedd57bfd976089dd991e2582 # tag=v3
+        with:
+          arguments: ${{ matrix.test-type.arguments }}

.github/workflows/gradle-wrapper-validation.yml

@@ -7,4 +7,4 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # tag=v4
-      - uses: gradle/actions/wrapper-validation@d9c87d481d55275bb5441eef3fe0e46805f9ef70 # tag=v3
+      - uses: gradle/actions/wrapper-validation@af1da67850ed9a4cedd57bfd976089dd991e2582 # tag=v3

.github/workflows/publish.yml

@@ -1,25 +1,53 @@
 name: publish
 on:
   push:
-    branches: # For branches, better to list them explicitly than regexp include
+    branches:
+      # For branches, better to list them explicitly than regexp include.
+      # Older branches are triggered using workflows present there
       - main
-      - 3.4.x
-      - 3.3.x
+      - 3.6.x
 permissions: read-all
 jobs:
   # General job notes: we DON'T want to cancel any previous runs, especially in the case of a "back to snapshots" build right after a release push
   # We specify the ubuntu version to minimize the chances we have to deal with a migration during a release
   prepare:
     # Notes on prepare: this job has no access to secrets, only github token. As a result, all non-core actions are centralized here
     # This includes the tagging and drafting of release notes. Still, when possible we favor plain run of gradle tasks
-    name: prepare
     runs-on: ubuntu-20.04
+    strategy:
+      fail-fast: false
+      matrix:
+        test-type:
+          - type: core
+            arguments: ":reactor-core:test --no-daemon"
+          - type: core-java21
+            arguments: ":reactor-core:java21Test --no-daemon"
+          - type: other
+            arguments: "check -x :reactor-core:test -x :reactor-core:java9Test -x :reactor-core:java21Test -x spotlessCheck -x :reactor-core:jcstress --no-daemon"
+    name: prepare - ${{ matrix.test-type.type }} tests
     outputs:
       versionType: ${{ steps.version.outputs.versionType }}
       fullVersion: ${{ steps.version.outputs.fullVersion }}
     steps:
     - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # tag=v4
-    - name: setup java
+    - name: Download JDK 9
+      if: contains('main 3.6.x', github.base_ref)
+      run: ${GITHUB_WORKSPACE}/.github/setup.sh
+      shell: bash
+    - name: Setup JDK 9
+      if: contains('main 3.6.x', github.base_ref)
+      uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # tag=v3
+      with:
+        distribution: 'jdkfile'
+        java-version: 9.0.4
+        jdkFile: /opt/openjdk/java9/OpenJDK9U-jdk_x64_linux_hotspot_9.0.4_11.tar.gz
+    - name: Setup JDK 21
+      if: contains('main 3.6.x', github.base_ref)
+      uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # tag=v3
+      with:
+        distribution: 'temurin'
+        java-version: 21
+    - name: Setup JDK 8
       uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # tag=v3
       with:
         distribution: 'temurin'
@@ -32,10 +60,9 @@ jobs:
       run: ./gradlew qualifyVersionGha
     - name: run checks
       id: checks
-      uses: gradle/actions/setup-gradle@d9c87d481d55275bb5441eef3fe0e46805f9ef70 # tag=v3
+      uses: gradle/actions/setup-gradle@af1da67850ed9a4cedd57bfd976089dd991e2582 # tag=v3
       with:
-        arguments: check -x jcstress
-
+        arguments: ${{ matrix.test-type.arguments }}
   #deploy the snapshot artifacts to Artifactory
   deploySnapshot:
     name: deploySnapshot
@@ -45,7 +72,25 @@ jobs:
     environment: snapshots
     steps:
     - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # tag=v4
-    - uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # tag=v3
+    - name: Download JDK 9
+      if: contains('main 3.6.x', github.base_ref)
+      run: ${GITHUB_WORKSPACE}/.github/setup.sh
+      shell: bash
+    - name: Setup JDK 9
+      if: contains('main 3.6.x', github.base_ref)
+      uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # tag=v3
+      with:
+        distribution: 'jdkfile'
+        java-version: 9.0.4
+        jdkFile: /opt/openjdk/java9/OpenJDK9U-jdk_x64_linux_hotspot_9.0.4_11.tar.gz
+    - name: Setup JDK 21
+      if: contains('main 3.6.x', github.base_ref)
+      uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # tag=v3
+      with:
+        distribution: 'temurin'
+        java-version: 21
+    - name: Setup JDK 8
+      uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # tag=v3
       with:
         distribution: 'temurin'
         java-version: 8
@@ -65,7 +110,25 @@ jobs:
     environment: releases
     steps:
     - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # tag=v4
-    - uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # tag=v3
+    - name: Download JDK 9
+      if: contains('main 3.6.x', github.base_ref)
+      run: ${GITHUB_WORKSPACE}/.github/setup.sh
+      shell: bash
+    - name: Setup JDK 9
+      if: contains('main 3.6.x', github.base_ref)
+      uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # tag=v3
+      with:
+        distribution: 'jdkfile'
+        java-version: 9.0.4
+        jdkFile: /opt/openjdk/java9/OpenJDK9U-jdk_x64_linux_hotspot_9.0.4_11.tar.gz
+    - name: Setup JDK 21
+      if: contains('main 3.6.x', github.base_ref)
+      uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # tag=v3
+      with:
+        distribution: 'temurin'
+        java-version: 21
+    - name: Setup JDK 8
+      uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # tag=v3
       with:
         distribution: 'temurin'
         java-version: 8
@@ -87,7 +150,25 @@ jobs:
     environment: releases
     steps:
     - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # tag=v4
-    - uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # tag=v3
+    - name: Download JDK 9
+      if: contains('main 3.6.x', github.base_ref)
+      run: ${GITHUB_WORKSPACE}/.github/setup.sh
+      shell: bash
+    - name: Setup JDK 9
+      if: contains('main 3.6.x', github.base_ref)
+      uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # tag=v3
+      with:
+        distribution: 'jdkfile'
+        java-version: 9.0.4
+        jdkFile: /opt/openjdk/java9/OpenJDK9U-jdk_x64_linux_hotspot_9.0.4_11.tar.gz
+    - name: Setup JDK 21
+      if: contains('main 3.6.x', github.base_ref)
+      uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # tag=v3
+      with:
+        distribution: 'temurin'
+        java-version: 21
+    - name: Setup JDK 8
+      uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # tag=v3
       with:
         distribution: 'temurin'
         java-version: 8