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Coding the Future

Julien Viet vietj

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Coding the Future
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@vietj
vietj / SseBodyCodec2.java
Last active September 26, 2025 13:31
package io.vertx.ext.web.codec.sse;
import io.vertx.codegen.annotations.Nullable;
import io.vertx.core.Future;
import io.vertx.core.Handler;
import io.vertx.core.Promise;
import io.vertx.core.buffer.Buffer;
import io.vertx.core.streams.ReadStream;
import io.vertx.core.streams.WriteStream;
import io.vertx.ext.web.codec.BodyCodec;
@vietj
vietj / Main.java
Created July 22, 2025 08:36
package io.vertx.core;
import io.netty.channel.EventLoop;
import io.vertx.core.internal.ContextInternal;
import io.vertx.core.internal.VertxInternal;
public class Main {
public static void main(String[] args) {
@vietj
vietj / validatior_error.txt
Created April 29, 2025 09:35
[INFO] Waiting until Deployment 98d775f6-a276-42ed-af47-7e70e196d924 is validated
[ERROR]
Deployment 98d775f6-a276-42ed-af47-7e70e196d924 failed
pkg:maven/io.vertx/vertx-codegen-json@5.0.0.CR8:
- Dependency version information is missing
- Developers information is missing
- License information is missing
- Project URL is not defined
- Project description is missing
@vietj
vietj / gRPC-service-unif.md
Created March 31, 2025 13:49

Proto centric

Given

service Greeter {
  rpc sayHello(HelloRequest) returns (HelloResponse);
}
@vietj
vietj / changes.diff
Created September 11, 2024 16:31
diff --git a/vertx-web-client/src/test/java/io/vertx/ext/web/client/WebClientTest.java b/vertx-web-client/src/test/java/io/vertx/ext/web/client/WebClientTest.java
index 4426909..11761b6 100644
--- a/vertx-web-client/src/test/java/io/vertx/ext/web/client/WebClientTest.java
+++ b/vertx-web-client/src/test/java/io/vertx/ext/web/client/WebClientTest.java
@@ -970,10 +970,10 @@ public class WebClientTest extends WebClientTestBase {
write(buffer, promise);
return promise.future();
}
- public void write(Buffer buffer, Handler<AsyncResult<Void>> handler) {
+ public void write(Buffer buffer, Promise<Void> promise) {
@vietj
vietj / VertxBootstrap.java
Created June 18, 2024 07:40
/*
* Copyright (c) 2011-2024 Contributors to the Eclipse Foundation
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
* which is available at https://www.apache.org/licenses/LICENSE-2.0.
*
* SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
*/
@vietj
vietj / plaintext.html
Created April 16, 2024 15:09
<!DOCTYPE html>
<html lang="en">
<head>
<title>Perflab results</title>
<style>
body {
font-family: monospace;
font-size: 12pt;
@vietj
vietj / repro.java
Created February 21, 2024 15:12
@Test
public void testPipeliningOrder() throws Exception {
client.close();
client = vertx.createHttpClient(createBaseClientOptions()
.setKeepAlive(true)
.setMaxPoolSize(1)
);
@vietj
vietj / gist:2ed0431fecea0d5fd07e14c257c3e4d9
Created November 17, 2023 14:53
package org.creekservice.kafka.test.perf.performance;
public class Main {
public static void main(String[] args) throws Exception {
org.openjdk.jmh.Main.main(new String[]{
JsonValidateBenchmark.class.getName() + ".measureDraft_04_Vertx",
"-prof", "async:" +
"libPath=/Users/julien/java/async-profiler-2.9-macos/build/libasyncProfiler.dylib;" +
@vietj
vietj / virtual threads.adoc
Created October 24, 2023 16:10

Vert.x Virtual Threads

Use virtual threads to write Vert.x code that looks like it is synchronous.

You still write the traditional Vert.x code processing events, but you have the opportunity to write synchronous code for complex workflows and use thread locals in such workflows.

Introduction

The non-blocking nature of Vert.x leads to asynchronous APIs. Asynchronous APIs can take various forms including callback style, promises or Rx-style. Vert.x uses futures in most places (although, it also supports Rx).