Retry in merge queue (open-telemetry#2146)

Author: trask

.github/workflows/build-common.yml

@@ -9,6 +9,10 @@ on:
       no-build-cache:
         type: boolean
         required: false
+      max-test-retries:
+        type: number
+        required: false
+        default: 0
 
 permissions:
   contents: read
@@ -90,6 +94,7 @@ jobs:
           "-PtestJavaVersion=${{ matrix.test-java-version }}"
           "-Porg.gradle.java.installations.paths=${{ steps.setup-java-test.outputs.path }}"
           "-Porg.gradle.java.installations.auto-download=false"
+          "-PmaxTestRetries=${{ inputs.max-test-retries }}"
           ${{ inputs.no-build-cache && '--no-build-cache' || '' }}
 
   integration-test:
@@ -109,7 +114,7 @@ jobs:
           cache-read-only: ${{ inputs.cache-read-only }}
 
       - name: Integration test
-        run: ./gradlew integrationTest ${{ inputs.no-build-cache && '--no-build-cache' || '' }}
+        run: ./gradlew integrationTest "-PmaxTestRetries=${{ inputs.max-test-retries }}" ${{ inputs.no-build-cache && '--no-build-cache' || '' }}
 
       - name: Save integration test results
         uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2

.github/workflows/build-pull-request.yml

@@ -16,6 +16,8 @@ jobs:
     uses: ./.github/workflows/build-common.yml
     with:
       cache-read-only: true
+      # retry in merge queue to avoid unnecessary failures
+      max-test-retries: ${{ github.event_name == 'merge_group' && 5 || 0 }}
 
   link-check:
     uses: ./.github/workflows/reusable-link-check.yml

buildSrc/build.gradle.kts

@@ -17,6 +17,7 @@ dependencies {
   implementation("net.ltgt.gradle:gradle-nullaway-plugin:2.2.0")
   implementation("org.owasp:dependency-check-gradle:12.1.3")
   implementation("ru.vyarus.animalsniffer:ru.vyarus.animalsniffer.gradle.plugin:2.0.1")
+  implementation("com.gradle:develocity-gradle-plugin:4.1.1")
 }
 
 spotless {

buildSrc/src/main/kotlin/otel.java-conventions.gradle.kts

@@ -66,6 +66,12 @@ tasks {
   withType<Test>().configureEach {
     useJUnitPlatform()
 
+    val maxTestRetries = gradle.startParameter.projectProperties["maxTestRetries"]?.toInt() ?: 0
+    develocity.testRetry {
+      // You can see tests that were retried by this mechanism in the collected test reports and build scans.
+      maxRetries.set(maxTestRetries)
+    }
+
     testLogging {
       exceptionFormat = TestExceptionFormat.FULL
       showStandardStreams = true