chore(implementation): use Jetty-12.1 core without servlets #333

lachlan-roberts · 2025-09-26T03:12:29Z

This is based on the work from #235.

Port the invoker to upgrade to Eclipse Jetty-12 version 12. Specifically using the new core APIs of Eclipse Jetty-12 that allow the overhead of a Servlet container to be avoided.

BREAKING CHANGE: use Java 17 or above, as required by Eclipse Jetty-12.

Replaces

Port the invoker to upgrade to Eclipse Jetty-12 version 12. Specifically using the new core APIs of Eclipse Jetty-12 that allow the overhead of a Servlet container to be avoided. BREAKING CHANGE: use Java 17 or above, as required by Eclipse Jetty-12. Signed-off-by: Lachlan Roberts <[email protected]>

ludoch · 2025-10-03T17:59:16Z

Thanks!
We need to remove jdk11 constraints in builds. I guess only a Googler can understand and change the kokoro files to jdk17

Also all references with maven.compiler.source>11</maven.compiler.source> need to change to 17

ludoch · 2025-10-03T18:00:13Z

For ex, remove https://github.com/GoogleCloudPlatform/functions-framework-java/blob/cd6caeda00262b2558815ae22cfc726c0638122a/.github/workflows/buildpack-integration-test.yml#L17https://github.com/GoogleCloudPlatform/functions-framework-java/blob/cd6caeda00262b2558815ae22cfc726c0638122a/.github/workflows/buildpack-integration-test.yml#L17

Maybe add java21 or 25

ludoch · 2025-10-03T18:04:02Z

@akerekes please help on google internal kokoro workflows.
The entire new code now has to only work with java17,21 and 25, so drop 11 and add new configs.

akerekes · 2025-10-03T21:01:41Z

Hi @lachlan-roberts , thank you for the PR! I'll work on the Google internal side. One note on the timeline is that Cloud Function deprecates java11 at the end of the month: https://cloud.google.com/functions/docs/runtime-support#java so my preference is to have this PR ready to merge, but wait until the end of the month with the merge, then do it in early November and release a new version of the FF-java library.

akerekes

Thank you @lachlan-roberts for the PR! I did the first round of review.

Please rebase the PR to HEAD one more time, I'm not planning to merge any other PRs until this one is done to avoid further rebasing and merge conflicts.

invoker/core/src/main/java/com/google/cloud/functions/invoker/BackgroundFunctionExecutor.java

akerekes · 2025-10-22T22:30:46Z

invoker/core/src/main/java/com/google/cloud/functions/invoker/BackgroundFunctionExecutor.java

-      res.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
      logger.log(Level.SEVERE, "Failed to execute " + functionExecutor.functionName(), t);
+      res.setStatus(HttpStatus.INTERNAL_SERVER_ERROR_500);
+      callback.succeeded();


Should this be callback.failed()?

I think it is best to use Response.writeError here. Which will complete the callback itself.

Fixed.

invoker/core/src/main/java/com/google/cloud/functions/invoker/http/HttpRequestImpl.java

akerekes · 2025-10-23T03:30:09Z

invoker/core/src/test/java/com/google/cloud/functions/invoker/http/HttpTest.java

+    public boolean handle(Request request, Response response, Callback callback) {
      try {
-        testReference.get().test(new HttpRequestImpl(req));
+        if (!HttpMethod.POST.is(request.getMethod())) {


Can you add a comment to mention that this restriction is just the result of the migration from servlets and if a test case required this handler could be extended to accept GET requests.

This was just a straight adaption of the servlet because it only overrided doPost(), but none of the tests are trying other HTTP methods and expecting a 405.

So I think its best I just remove this block of code.

invoker/core/src/test/java/com/google/cloud/functions/invoker/http/HttpTest.java

invoker/core/pom.xml

Port the invoker to upgrade to Eclipse Jetty-12 version 12. Specifically using the new core APIs of Eclipse Jetty-12 that allow the overhead of a Servlet container to be avoided. BREAKING CHANGE: use Java 17 or above, as required by Eclipse Jetty-12. Signed-off-by: Lachlan Roberts <[email protected]>

maemayve · 2025-10-29T17:10:51Z

invoker/core/src/main/java/com/google/cloud/functions/invoker/BackgroundFunctionExecutor.java

    } finally {
      executionIdUtil.removeExecutionId();
    }
+    return true;


Can you add a comment here or at the top of the method explaining the return value? It seems confusing to me at face value

maemayve · 2025-10-29T17:11:45Z

invoker/core/src/main/java/com/google/cloud/functions/invoker/BackgroundFunctionExecutor.java

    FunctionExecutor<CloudEventT> executor = (FunctionExecutor<CloudEventT>) functionExecutor;
-    byte[] body = req.getInputStream().readAllBytes();
+
+    byte[] body = Content.Source.asByteArrayAsync(req, -1).get();


Can you explain this array manipulation in a comment? why the '-1'?

maemayve · 2025-10-29T17:26:16Z

invoker/core/src/main/java/com/google/cloud/functions/invoker/http/TimeoutHandler.java

+        new TimerTask() {
+          @Override
+          public void run() {
+            // TODO: there is a race between the handler writing response and timeout firing.


Can you add the action item to this TODO? what needs to be done to address this race condition?

akerekes · 2025-10-29T20:29:01Z

@lachlan-roberts Thank you for the follow-up. Can you reformat the code to make the linter check pass?

The PR looks good to me, I'm waiting on @maemayve 's comments to be resolved and happy to approve it then.

lachlan-roberts added 2 commits September 25, 2025 18:44

lachlan-roberts changed the title ~~use Jetty-12.1 core without servlets~~ chore(implementation): use Jetty-12 core without servlets Sep 30, 2025

lachlan-roberts changed the title ~~chore(implementation): use Jetty-12 core without servlets~~ chore(implementation): use Jetty-12.1 core without servlets Sep 30, 2025

ludoch requested a review from akerekes October 3, 2025 18:02

ludoch self-requested a review October 3, 2025 18:04

akerekes reviewed Oct 23, 2025

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ludoch requested changes Oct 27, 2025

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invoker/core/pom.xml Outdated Show resolved Hide resolved

lachlan-roberts added 2 commits October 29, 2025 21:32

Merge remote-tracking branch 'origin/main' into jetty-12.1-no-servlets

cff88d1

lachlan-roberts requested review from akerekes and ludoch October 29, 2025 11:35

maemayve requested changes Oct 29, 2025

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chore(implementation): use Jetty-12.1 core without servlets #333

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chore(implementation): use Jetty-12.1 core without servlets #333

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