RewriteTest: framework-agnostic ExecutionContext customizer registry (#7559)

* RewriteTest: framework-agnostic ExecutionContext customizer registry

Adds `RewriteTest.defaultExecutionContextCustomizers`, a `Map<Class<?>, Consumer<ExecutionContext>>`
applied to the context built by `defaultExecutionContext`. Test framework integrations
(JUnit, TestNG, Spock, …) can register a customizer keyed by their own class without
`rewrite-test` taking a dependency on any framework; `putIfAbsent` makes registration
naturally idempotent.

First consumer: a JUnit Jupiter `BeforeAllCallback` in rewrite-gradle's test sources,
auto-detected via service loader, that loads `~/.m2/settings.xml` into the ExecutionContext.
Recipes resolving Maven artifacts during rewrite-gradle tests then honor any configured
mirror, sidestepping Maven Central rate limits (HTTP 404 + Retry-After) under parallel load.
Gradle does not normally read the user's Maven settings, so this opt-in lives entirely in
test sources of openrewrite/rewrite — not in any published API surface.

* ci: configure ~/.m2/settings.xml mirror to avoid Maven Central rate limits

Inlines the build job that previously delegated to openrewrite/gh-automation's
reusable ci-gradle workflow, and adds an `s4u/maven-settings-action` step that
writes a `~/.m2/settings.xml` with a wildcard mirror pointing at Moderne's
Artifactory cache. The MavenSettingsAutoLoadingExtension introduced earlier in
this PR loads that file into the test ExecutionContext, so recipes resolving
Maven artifacts during rewrite-gradle tests no longer hit Maven Central directly
and avoid the HTTP 404 + Retry-After throttling that's been failing CI under
parallel load.

The reusable workflow had no hook to inject extra setup steps, and inlining
keeps everything in this PR. Functionality (build, scheduled-failure Slack
notification, snapshot publish on main) is preserved.

* Revert "ci: configure ~/.m2/settings.xml mirror to avoid Maven Central rate limits"

This reverts commit a4ba99a.

* ci: configure Maven mirror via gh-automation composite actions

Switches from the gh-automation reusable workflow (`ci-gradle.yml`) to its
finer-grained composite-action form, so we can inject `s4u/maven-settings-action`
between `setup` and `build`. The action writes a `~/.m2/settings.xml` whose
wildcard mirror points at Moderne's Artifactory cache; the
MavenSettingsAutoLoadingExtension introduced earlier in this PR loads it into
the test ExecutionContext, avoiding Maven Central's HTTP 404 + Retry-After
throttling under parallel test load.

The composite actions land in openrewrite/gh-automation#94.

* ci: add Apache 2.0 header to junit-platform.properties for licenseTest

Author: jkschneider

.github/workflows/ci.yml

@@ -20,18 +20,40 @@ concurrency:
 
 jobs:
   build:
-    uses: openrewrite/gh-automation/.github/workflows/ci-gradle.yml@main
-    with:
-      java_version: |
-        25
-        21
-    secrets:
-      gradle_enterprise_access_key: ${{ secrets.GRADLE_ENTERPRISE_ACCESS_KEY }}
-      sonatype_username: ${{ secrets.SONATYPE_USERNAME }}
-      sonatype_token: ${{ secrets.SONATYPE_TOKEN}}
-      ossrh_signing_key: ${{ secrets.OSSRH_SIGNING_KEY }}
-      ossrh_signing_password: ${{ secrets.OSSRH_SIGNING_PASSWORD }}
-      OPS_GITHUB_ACTIONS_WEBHOOK: ${{ secrets.OPS_GITHUB_ACTIONS_WEBHOOK }}
-      node_auth_token: ${{ secrets.NPM_TOKEN }}
-      pypi_token: ${{ secrets.PYPI_OPENREWRITE_PUBLISH }}
-      nuget_api_key: ${{ secrets.NUGET_API_KEY }}
+    runs-on: ubuntu-latest
+    if: github.event_name != 'schedule' || github.repository_owner == 'openrewrite' || github.repository_owner == 'moderneinc'
+    steps:
+      - uses: openrewrite/gh-automation/.github/actions/setup@main
+        with:
+          java_version: |
+            25
+            21
+          develocity_access_key: ${{ secrets.GRADLE_ENTERPRISE_ACCESS_KEY }}
+
+      # Route Maven resolution through Moderne's Artifactory cache to avoid
+      # Maven Central rate-limiting (HTTP 404 + Retry-After) under parallel
+      # test load. Picked up by MavenSettingsAutoLoadingExtension at test time.
+      - uses: s4u/maven-settings-action@v3.1.0
+        with:
+          mirrors: '[{"id": "moderne-cache", "name": "Moderne Artifactory Cache", "mirrorOf": "*", "url": "https://artifactory.moderne.ninja/artifactory/moderne-cache-3/"}]'
+
+      - uses: openrewrite/gh-automation/.github/actions/build@main
+
+      - if: failure() && github.event_name == 'schedule' && (github.repository_owner == 'openrewrite' || github.repository_owner == 'moderneinc')
+        uses: openrewrite/gh-automation/.github/actions/slack-failure@main
+        with:
+          webhook: ${{ secrets.OPS_GITHUB_ACTIONS_WEBHOOK }}
+
+      - if: >
+          github.event_name != 'pull_request' &&
+          github.ref == 'refs/heads/main' &&
+          (github.repository_owner == 'openrewrite' || github.repository_owner == 'moderneinc')
+        uses: openrewrite/gh-automation/.github/actions/publish-snapshots@main
+        with:
+          sonatype_username: ${{ secrets.SONATYPE_USERNAME }}
+          sonatype_token: ${{ secrets.SONATYPE_TOKEN }}
+          ossrh_signing_key: ${{ secrets.OSSRH_SIGNING_KEY }}
+          ossrh_signing_password: ${{ secrets.OSSRH_SIGNING_PASSWORD }}
+          node_auth_token: ${{ secrets.NPM_TOKEN }}
+          pypi_token: ${{ secrets.PYPI_OPENREWRITE_PUBLISH }}
+          nuget_api_key: ${{ secrets.NUGET_API_KEY }}

rewrite-gradle/src/test/java/org/openrewrite/gradle/MavenSettingsAutoLoadingExtension.java

@@ -0,0 +1,55 @@
+/*
+ * Copyright 2026 the original author or authors.
+ * <p>
+ * 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
+ * <p>
+ * https://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * 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.
+ */
+package org.openrewrite.gradle;
+
+import org.junit.jupiter.api.extension.BeforeAllCallback;
+import org.junit.jupiter.api.extension.ExtensionContext;
+import org.openrewrite.ExecutionContext;
+import org.openrewrite.maven.MavenExecutionContextView;
+import org.openrewrite.maven.MavenSettings;
+import org.openrewrite.test.RewriteTest;
+
+import static org.openrewrite.maven.tree.MavenRepository.MAVEN_LOCAL_DEFAULT;
+
+/**
+ * Loads {@code ~/.m2/settings.xml} (and {@code $M2_HOME/conf/settings.xml}) into the
+ * default {@link ExecutionContext} for every {@link RewriteTest} in this module, so a
+ * configured Maven mirror or repository is honored by recipes that resolve artifacts.
+ * Auto-registered via {@code META-INF/services/org.junit.jupiter.api.extension.Extension};
+ * Gradle does not normally read the user's Maven settings, so this is opt-in at the
+ * module test classpath level.
+ */
+public class MavenSettingsAutoLoadingExtension implements BeforeAllCallback {
+
+    @Override
+    public void beforeAll(ExtensionContext context) {
+        RewriteTest.defaultExecutionContextCustomizers.putIfAbsent(
+                MavenSettingsAutoLoadingExtension.class,
+                MavenSettingsAutoLoadingExtension::loadMavenSettings);
+    }
+
+    private static void loadMavenSettings(ExecutionContext ctx) {
+        MavenExecutionContextView mctx = MavenExecutionContextView.view(ctx);
+        boolean nothingConfigured = mctx.getSettings() == null &&
+                                    mctx.getLocalRepository().equals(MAVEN_LOCAL_DEFAULT) &&
+                                    mctx.getRepositories().isEmpty() &&
+                                    mctx.getActiveProfiles().isEmpty() &&
+                                    mctx.getMirrors().isEmpty();
+        if (nothingConfigured) {
+            mctx.setMavenSettings(MavenSettings.readMavenSettingsFromDisk(mctx));
+        }
+    }
+}

rewrite-gradle/src/test/resources/META-INF/services/org.junit.jupiter.api.extension.Extension

@@ -0,0 +1 @@
+org.openrewrite.gradle.MavenSettingsAutoLoadingExtension

rewrite-gradle/src/test/resources/junit-platform.properties

@@ -0,0 +1,17 @@
+#
+# Copyright 2026 the original author or authors.
+# <p>
+# 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
+# <p>
+# https://www.apache.org/licenses/LICENSE-2.0
+# <p>
+# 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.
+#
+
+junit.jupiter.extensions.autodetection.enabled=true

rewrite-test/src/main/java/org/openrewrite/test/RewriteTest.java

@@ -35,6 +35,7 @@
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Path;
 import java.util.*;
+import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.CopyOnWriteArrayList;
 import java.util.function.Consumer;
 import java.util.function.Function;
@@ -51,6 +52,18 @@
 
 @SuppressWarnings("unused")
 public interface RewriteTest extends SourceSpecs {
+    /**
+     * Registry of customizers applied to the {@link ExecutionContext} produced by
+     * {@link #defaultExecutionContext(SourceSpec[])}. Test framework integrations
+     * (e.g. a JUnit Jupiter {@code BeforeAllCallback}) can register a customizer
+     * once at startup without {@code rewrite-test} taking a dependency on the
+     * framework.
+     * <p>
+     * The map is keyed by the integration's class so {@code putIfAbsent(MyExt.class, MyExt::load)}
+     * is naturally idempotent — callers do not need their own one-shot guard.
+     */
+    Map<Class<?>, Consumer<ExecutionContext>> defaultExecutionContextCustomizers = new ConcurrentHashMap<>();
+
     static AdHocRecipe toRecipe(Supplier<TreeVisitor<?, ExecutionContext>> visitor) {
         return new AdHocRecipe(null, null, null, visitor, null, null);
     }
@@ -696,6 +709,9 @@ default ExecutionContext defaultExecutionContext(SourceSpec<?>[] sourceSpecs) {
             }
             fail("Failed to parse sources or run recipe", t);
         });
+        for (Consumer<ExecutionContext> customizer : defaultExecutionContextCustomizers.values()) {
+            customizer.accept(ctx);
+        }
         return ParsingExecutionContextView.view(ctx).setCharset(StandardCharsets.UTF_8);
     }