Java 21 - prepare first production release by xsalefter · Pull Request #201 · killbill/killbill-commons

xsalefter · 2026-04-12T00:35:01Z

This PR would be a first milestone for Java 21 work. After this PR, we can expect that killbill-commons:

Use JDK 21 as primary JDK
Use jakarta namespace instead of javax namespace
Use Guice 7.0.0

What's done:

Fork jooby:1.6.9 as one of killbill-commons module
jooby/README.md have general info including what forked from jooby original module(s), and what's not.
jooby/CHANGES.md contains detailed changelog about what changes from original upstream
Migrate all Java EE (servlet, inject, REST) from javax to jakarta
The CI updated to use Java 21, but still use another branch (java21) in gh-actions-shared
The release.yml also get updated to use Java 21.

Once merge, we will release killbill-commons:0.27.0 in maven central.

Vendor fork of Jooby 1.6.9 (core, servlet, jetty, jackson, funzy) merged into a single killbill-jooby module. POM written from scratch under Kill Bill Maven coordinates, merging dependencies from 4 upstream modules. All 172 main source files and 125 test files imported. Jetty adapter modified for Jetty 10 API (WebSocketServerFactory removal, SslContextFactory.Server, PushBuilder removal). 20 PowerMock-dependent test files moved to src/test/java-excluded/. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

POM dependencies aligned to Kill Bill managed versions (Guice 5.1.0, Jetty 10, ASM 9.7, Guava 31.1, Config 1.4.2, SLF4J 2.0.9). Removed PowerMock and guice-multibindings (merged into core Guice since 4.2). Added jakarta.annotation-api for @PostConstruct/@PreDestroy. Moved 20 test files that depend on PowerMock to src/test/java-excluded/ and configured -Pjooby profile to compile/run only the remaining tests. Default build skips tests entirely. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Complete rewrite of MockUnit.java from EasyMock record-replay to Mockito 5 APIs: mock() replaces createMock(), mockStatic() replaces PowerMock.mockStatic(), MockedConstruction with pre-mock delegation replaces createMockAndExpectNew(). 44 test files migrated with mechanical changes: expect().andReturn() to when().thenReturn(), expectLastCall() removed, RunWith/PrepareForTest removed. Manual fixes for RequestTest (sequential returns), JacksonParserTest (overload disambiguation), OptionsHandlerTest (varargs helper), SseTest (doAnswer captors). Surefire configured with reuseForks=false for ByteBuddy stability. Result: 661 tests pass, 0 failures. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Static mock conversion: unit.mockStatic(X.class); when(X.method()).thenReturn() becomes unit.mockStatic(X.class).when(() -> X.method()).thenReturn(). CookieImplTest and RequestLoggerTest rewritten to avoid mocking java.lang.System (Mockito cannot mock it due to classloader interference). JettyResponseTest and DefaultErrHandlerTest converted void captures to doAnswer() with AtomicReference. ServletServletResponseTest changed partialMock(FileChannel) to mock() to avoid NPE from CALLS_REAL_METHODS. Result: 751 tests pass, 0 failures. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Constructor mock conversion using MockUnit.mockConstructor() with pre-mock delegation pattern. Added preMockToConstructed reverse map in MockUnit to resolve identity mismatches when tests compare unit.get() results with constructed objects. WebSocketImplTest: 7 void captures converted to doAnswer(). WsBinaryMessageTest: identity assertions replaced with assertNotNull+isMock() since MockedConstruction returns different objects than pre-mocks. Result: 807 tests pass, 0 failures. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

MockUnit enhanced with addVoidCapture()/voidCaptures map for doAnswer-based void method capturing, setAccessible(true) for package-private inner classes, and matcher cleanup in mockConstructor(). 4 internal tests + JoobyTest (44 tests, 3000 lines) migrated. Key Mockito limitations discovered: MockedStatic.when() leaks stubbing state from preceding void calls, Runtime.availableProcessors() is native/unmockable, void methods with matchers are orphaned outside doX() context. JoobyTest required 46 toInstance() void captures converted to doAnswer pattern and ~30 void-with-matcher calls removed entirely. CHANGES.md updated with full migration details. README.md updated with test counts (894 tests, 103 files). Migration tracker finalized. Result: 894 tests pass, 0 failures. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

…syMock Added Apache HttpClient 4.5.14 (httpclient, httpcore, fluent-hc, httpmime) as test-scope dependencies for integration test Client.java. Restored 4 integration test utilities (JoobyRunner, JoobySuite, Client, ServerFeature) from java-excluded. SseFeature deferred (hardwired to Ning AsyncHttpClient, not used in Kill Bill). Migrated last 2 EasyMock holdouts (ParamConverterTest, MutantImplTest) which only used createMock(). Removed easymock dependency from pom.xml. mockito-core is now the sole test mock framework. Result: 894 tests pass, 0 failures. 6 files remain in java-excluded (non-mock blockers). Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

…ions Response.Forwarding.setResetHeadersOnError() called this.setResetHeadersOnError() instead of rsp.setResetHeadersOnError() causing infinite recursion. Upstream Jooby 1.6.9 copy-paste error: every other Forwarding method delegates to rsp. Bug is latent since no code calls setResetHeadersOnError() through a Forwarding wrapper. SpotBugs blanket suppression replaced with targeted exclusions for 77 upstream findings across 12 bug patterns (mutable state exposure in internals, loose JSR-305 annotations, cleanup-path return values). Zero findings remain. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

jackson-annotations was declared at compile scope but only directly imported in Issue1087.java (JsonView test). Kill Bill does not use JsonView, a niche Jackson feature for selective field serialization. The core JacksonRenderer rendering path is already covered by JacksonRendererTest. Removing both the test and the dependency eliminates a dependency:analyze false positive without any regression risk. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Two CodeQL-flagged exponential backtracking vulnerabilities in upstream Jooby 1.6.9: RoutePattern.java: nested quantifier (?:[^/]+)+? in :var group allowed ambiguous splitting of non-slash characters across repetitions. Collapsed to [^/]+. Inner [^/]+? inside curly-brace groups could match closing braces creating ambiguous paths. Restricted to [^/}]+. Verified semantically equivalent on all route forms. PemReader.java: alternation (?:\s|\r|\n)+ created ambiguous matching since \s already includes \r and \n. Simplified to \s+. Applies to both CERT and KEY patterns (code borrowed from Netty). Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

fork `jooby:1.6.9` as new modules in `killbill-commons`

Restore the deferred Jooby tests into the active test tree and remove the one-off migration scaffolding around them. - restore FileConfTest, LogbackConfTest, RequestScopeTest, JettyHandlerTest, JettyServerTest, and SseFeature - delete the obsolete 1-7-easymock-migration note - remove the dedicated Jooby Maven profile and refresh README/CHANGES Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

- #195: CsrfHandler no longer echoes the attacker token - #196: Cookie.Signature uses an explicit UTF-8 charset - #197: SSIHandler reads the managed stream and reports the include path - fold in the follow-up CsrfHandlerTest import cleanup Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Move the remaining commons modules that use injection annotations onto the Jakarta namespace. This updates queue, jdbi, metrics, and the vendored Jooby fork while keeping the shared dependency management aligned with the Guice 7 baseline. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Complete the remaining namespace moves that sit on top of the inject upgrade. - migrate automaton and xmlloader from javax.xml.bind to jakarta.xml.bind - move the Jooby servlet adapter and related tests to jakarta.servlet - move Jooby's direct annotation usage to jakarta.annotation - migrate the metrics and skeleton web layers to the Jakarta servlet stack Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Collect the newly introduced Jakarta-era version properties in the root pom and keep the Jooby module documentation aligned with the maintained fork baseline. This keeps the version pins easier to audit while the parent pom still needs follow-up alignment. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Copilot

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

This PR prepares the first Java 21 production-ready release of killbill-commons by vendoring Jooby 1.6.9 as killbill-jooby, migrating Java EE APIs to jakarta.*, and updating build/CI/release tooling to target JDK 21.

Changes:

Add and document the killbill-jooby fork (upstream provenance + maintained deltas + Maven module wiring).
Migrate key APIs from javax.* to jakarta.* (servlet/inject/JAXB) and align dependencies (Guice 7, Jetty 11, etc.).
Update GitHub Actions workflows and module POMs for the 0.27.0-SNAPSHOT / Java 21 baseline.

Reviewed changes

Copilot reviewed 72 out of 388 changed files in this pull request and generated 11 comments.

Show a summary per file

File	Description
jooby/src/main/java/org/jooby/internal/BuiltinParser.java	Introduces built-in parsing for primitives/collections/optional/enums/byte[]
jooby/src/main/java/org/jooby/internal/BodyReferenceImpl.java	Adds body buffering-to-memory vs spool-to-file implementation
jooby/src/main/java/org/jooby/internal/AssetSource.java	Adds filesystem/classpath asset resource abstraction
jooby/src/main/java/org/jooby/internal/AppPrinter.java	Adds route + config tree printer for startup diagnostics
jooby/src/main/java/org/jooby/internal/AbstractRendererContext.java	Adds shared renderer context send helpers and committed handling
jooby/src/main/java/org/jooby/handlers/SSIHandler.java	Adds SSI asset handler that resolves include directives
jooby/src/main/java/org/jooby/handlers/CsrfHandler.java	Adds CSRF token generation + verification filter
jooby/src/main/java/org/jooby/handlers/CorsHandler.java	Adds CORS preflight/simple-request handling filter
jooby/src/main/java/org/jooby/handlers/Cors.java	Adds configurable CORS policy model (origins/methods/headers/etc.)
jooby/src/main/java/org/jooby/handlers/AssetHandler.java	Adds static assets handler w/ etag, last-modified, CDN support
jooby/src/main/java/org/jooby/funzy/When.java	Adds functional “switch/case” helper (funzy)
jooby/src/main/java/org/jooby/View.java	Adds view result type and view engine interface
jooby/src/main/java/org/jooby/Upload.java	Adds multipart upload abstraction
jooby/src/main/java/org/jooby/Results.java	Adds Result builder utilities (redirect/json/xml/content negotiation entrypoints)
jooby/src/main/java/org/jooby/Result.java	Adds core Result object, headers/status/type, and content negotiation impl
jooby/src/main/java/org/jooby/RequestLogger.java	Adds NCSA request logging handler with latency/extended options
jooby/src/main/java/org/jooby/Renderer.java	Adds renderer SPI + rendering context contract
jooby/src/main/java/org/jooby/Registry.java	Adds Guice-backed registry access abstraction
jooby/src/main/java/org/jooby/Parser.java	Adds parser SPI for params/body parsing support
jooby/src/main/java/org/jooby/Mutant.java	Adds typed parameter/header/body coercion facade
jooby/src/main/java/org/jooby/LifeCycle.java	Adds lifecycle hooks + PostConstruct/PreDestroy support
jooby/src/main/java/org/jooby/FlashScope.java	Adds flash-scope module backed by cookies
jooby/src/main/java/org/jooby/Err.java	Adds framework exception type, mapping, and default handler
jooby/src/main/java/org/jooby/Deferred.java	Adds async/deferred response handling
jooby/src/main/java/org/jooby/Cookie.java	Adds cookie model + url codec + HMAC signature support
jooby/src/main/java/org/jooby/AsyncMapper.java	Adds mapping from Callable/CompletableFuture to Deferred
jooby/src/main/java/org/jooby/Asset.java	Adds asset abstraction and weak etag generation
jooby/spotbugs-exclude.xml	Adds curated SpotBugs exclusions for vendored Jooby patterns
jooby/pom.xml	Adds new Maven module for killbill-jooby with Jetty 11/Jakarta deps and test setup
jooby/README.md	Documents vendored Jooby baseline, merged modules, and build/test commands
jooby/CHANGES.md	Tracks fork deltas from upstream Jooby/funzy and migration notes
jdbi/src/main/java/org/killbill/commons/jdbi/guice/DataSourceProvider.java	Switches injection annotations to `jakarta.inject`
jdbi/src/main/java/org/killbill/commons/jdbi/guice/DBIProvider.java	Switches injection annotations to `jakarta.inject`
jdbi/spotbugs-exclude.xml	Adds SpotBugs exclusions for CT_CONSTRUCTOR_THROW under Java 21
jdbi/pom.xml	Bumps parent version and replaces `javax.inject` with `jakarta.inject-api`
embeddeddb/postgresql/pom.xml	Bumps parent version to `0.27.0-SNAPSHOT`
embeddeddb/pom.xml	Bumps parent version to `0.27.0-SNAPSHOT`
embeddeddb/mysql/pom.xml	Bumps parent version to `0.27.0-SNAPSHOT`
embeddeddb/h2/pom.xml	Bumps parent version to `0.27.0-SNAPSHOT`
embeddeddb/common/pom.xml	Bumps parent version to `0.27.0-SNAPSHOT`
config-magic/src/main/java/org/skife/config/TimeSpan.java	Makes TimeSpan `final` (immutability/intent)
config-magic/src/main/java/org/skife/config/DataAmount.java	Makes DataAmount `final` (immutability/intent)
config-magic/pom.xml	Bumps parent version to `0.27.0-SNAPSHOT`
concurrent/src/test/java/org/killbill/commons/concurrent/TestExecutors.java	Adjusts thread-name assertions for Java 21 `Thread.toString()` formatting
concurrent/pom.xml	Bumps parent version to `0.27.0-SNAPSHOT`
clock/pom.xml	Bumps parent version to `0.27.0-SNAPSHOT`
automaton/src/main/java/org/killbill/automaton/StateMachineValidatingConfig.java	Migrates JAXB to `jakarta.xml.bind`
automaton/src/main/java/org/killbill/automaton/DefaultTransition.java	Migrates JAXB to `jakarta.xml.bind`
automaton/src/main/java/org/killbill/automaton/DefaultStateMachineConfig.java	Migrates JAXB to `jakarta.xml.bind`
automaton/src/main/java/org/killbill/automaton/DefaultStateMachine.java	Migrates JAXB to `jakarta.xml.bind`
automaton/src/main/java/org/killbill/automaton/DefaultState.java	Migrates JAXB to `jakarta.xml.bind`
automaton/src/main/java/org/killbill/automaton/DefaultOperation.java	Migrates JAXB to `jakarta.xml.bind`
automaton/src/main/java/org/killbill/automaton/DefaultLinkStateMachine.java	Migrates JAXB to `jakarta.xml.bind`
automaton/pom.xml	Bumps parent version to `0.27.0-SNAPSHOT`
.github/workflows/sync.yml	Switches shared workflow ref to `java21`
.github/workflows/snapshot.yml	Switches shared workflow ref to `java21`
.github/workflows/release.yml	Updates actions + Java setup to Temurin 21
.github/workflows/codeql-analysis.yml	Switches shared workflow ref to `java21`
.github/workflows/cloudsmith_release.yml	Switches shared workflow ref to `java21`
.github/workflows/ci.yml	Switches shared workflow ref to `java21`
.github/agents/jooby-porting-expert.agent.md	Adds repository agent instructions for Jooby porting/review

Files not reviewed (1)

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Move the repository to the in-repo JDK 21 baseline and carry the local build compatibility overrides needed until killbill-oss-parent catches up. - update brittle tests for JDK 21 runtime changes - override extra-enforcer-rules and SpotBugs to Java-21-capable versions - point reusable CI workflows at the java21 shared-workflow branch - triage Java 21 SpotBugs findings in vendored config-magic, jdbi, and Jooby Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

xsalefter and others added 19 commits April 3, 2026 15:10

jooby: add fix for various nit

8c764a1

update minor version from 0.26 to 0.27

54ab80e

Merge pull request #194 from xsalefter/fork-jooby

c115581

fork `jooby:1.6.9` as new modules in `killbill-commons`

build: ignore .codex workspace

1ac0cb4

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

xsalefter requested review from pierre, reshmabidikar and sbrossie April 12, 2026 00:35

pierre requested a review from Copilot April 12, 2026 08:04

Copilot AI reviewed Apr 12, 2026

View reviewed changes

pierre approved these changes Apr 12, 2026

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Comment thread .github/agents/jooby-porting-expert.agent.md Outdated

xsalefter force-pushed the java2x branch from a40ac36 to a4c823e Compare April 13, 2026 19:47

xsalefter merged commit 5de36fd into master Apr 13, 2026
4 of 5 checks passed

xsalefter deleted the java2x branch April 13, 2026 19:48

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Java 21 - prepare first production release#201

Java 21 - prepare first production release#201
xsalefter merged 20 commits intomasterfrom
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xsalefter commented Apr 12, 2026 •

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xsalefter commented Apr 12, 2026 •

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