Release Notes for Eclipse Vert.x 4.1
For use with Eclipse Vert.x 4.1.8
Abstract
Preface
Date of release: 2022-01-17
Providing feedback on Red Hat documentation
We appreciate your feedback on our documentation. To provide feedback, you can highlight the text in a document and add comments.
This section explains how to submit feedback.
Prerequisites
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Procedure
To provide your feedback, perform the following steps:
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Enter your feedback in the text box and click Submit.
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Making open source more inclusive
Red Hat is committed to replacing problematic language in our code, documentation, and web properties. We are beginning with these four terms: master, slave, blacklist, and whitelist. Because of the enormity of this endeavor, these changes will be implemented gradually over several upcoming releases. For more details, see our CTO Chris Wright’s message.
Chapter 1. Required Infrastructure Component Versions
When you work with Red Hat build of Eclipse Vert.x, you can use the following components. However, Red Hat does not provide support for components listed below except Red Hat OpenShift cluster.
- Required components
- The following components are required to build and develop applications using Eclipse Vert.x.
Component name | Version |
---|---|
Maven | 3.6.0 or later |
JDK[a] | 8 or 11 |
[a]
A full JDK installation is required, as JRE does not provide tools for compiling Java applications from source.
|
- Optional components
- Red Hat recommends using the following components depending on your development and production environments.
Component name | Version |
---|---|
git | 2.0 or later |
OpenShift Maven Plugin | 1.1.1 |
oc command line tool | 3.11 or later[a] |
Access to a Red Hat OpenShift cluster[b] | 3.11 or later |
[a]
The version of the oc CLI tool should correspond to the version of OCP that you are using.
[b]
OpenShiftCluster is supported by Red Hat
|
Chapter 2. Supported Eclipse Vert.x Runtime Component Configurations and Integrations
The following resource defines the supported configurations and integrations of Red Hat products with Eclipse Vert.x:
- For a list of technologies that are supported for integration with Eclipse Vert.x in production environments see the Supported Eclipse Vert.x configurations and integrations.
- For a list of Eclipse Vert.x runtime artifacts and their versions see the component details page.
Chapter 3. Features
3.1. New and Changed features
This section describes the new functionalities introduced in this release. It also contains information about changes in the existing functionalities.
3.1.1. OpenJDK11 OpenShift images support multiple architectures
OpenJ9 images for IBM Z and IBM Power Systems have been deprecated. The following OpenJDK11 image has been updated to support multiple architectures:
-
ubi8/openjdk-11
You can use the OpenJDK11 image with the following architectures:
- x86 (x86_64)
- s390x (IBM Z)
- ppc64le (IBM Power Systems)
3.1.2. Support Eclipse Vert.x Runtime on FIPS enabled Red Hat Enterprise Linux (RHEL) system
Red Hat build of Eclipse Vert.x runs on a FIPS enabled RHEL system and uses FIPS certified libraries provided by RHEL.
3.1.3. HTTP client redirect handler propagates headers
From Eclipse Vert.x 4.1.0 onward, if there are headers in an HTTP redirect, then the HTTP client redirect handler propagates the headers to the next request. This change enables the redirect handler to have more control over the entire redirected request.
In earlier releases of Eclipse Vert.x, where there were redirected requests with headers, the HTTP client would handle the headers after the redirect.
The following example shows you how redirects are handled in Eclipse Vert.x 4.1.0:
RequestOptions options = new RequestOptions(); options.setMethod(HttpMethod.GET); options.setHost(uri.getHost()); options.setPort(port); options.setSsl(ssl); options.setURI(requestURI); // From 4.1.0 propagate headers options.setHeaders(resp.request().headers()); options.removeHeader(CONTENT_LENGTH);
3.1.4. Upgrade to Infinispan 12
In Eclipse Vert.x 4.1.0, the Infinispan cluster manager has been updated and is based on Infinispan 12.
Infinispan 11 had a bug, which did not allow storing of byte arrays in a multimap cache. As a wordaround, the Eclipse Vert.x cluster manager had to use an internal Infinispan class, WrappedBytes
, to store eventbus subscription data. This issue has been fixed in Infinispan 12.
3.1.5. JSON configuration takes precedence over connection string options in MongoDB Client
In Eclipse Vert.x 4.1.0, the JSON configuration options are applied even if a connection_string
option is available.
The following configuration options are now applied:
{ mongo:{ db_name: "mydb" connection_string: "mongodb://localhost:27017" maxPoolSize: 10 minPoolSize: 3 } }
In earlier releases of Eclipse Vert.x, the JSON configuration options were ignored when connection string was available. For example, consider the previous example. In earlier releases of Eclipse Vert.x, db_name
, maxPoolSize
, and minPoolSize
options would have been ignored.
3.1.6. Removed the deprecated JWT options methods
From Eclipse Vert.x 4.0 onward, the JWT and OAuth2 handlers are used to handle scopes.
From Eclipse Vert.x 4.1.0 onward, JWTOptions.setScopes(List<String>)
, JWTOptions.addScope(String)
and JWTOptions.withScopeDelimiter(String)
methods have been removed. These methods did not comply with the specification.
The following example shows you how to handle scopes in Eclipse Vert.x 4.1.0.
// before 4.1.0 JWTAuthOptions authConfig = new JWTAuthOptions() .setJWTOptions(new JWTOptions() .addScope("a") .addScope("b") .withScopeDelimiter(" "))); JWTAuth authProvider = JWTAuth.create(vertx, authConfig); router.route("/protected/*").handler(JWTAuthHandler.create(authProvider)); // in 4.1.0 JWTAuth authProvider = JWTAuth.create(vertx, new JWTAuthOptions()); router.route("/protected/*").handler( JWTAuthHandler.create(authProvider) .addScope("a") .addScope("b") .withScopeDelimiter(" "));
3.1.7. Deprecated the custom formatter method that accepts a function
From Eclipse Vert.x 4.1.0, LoggerHandler.customFormatter(Function)
method has been deprecated. The function takes as input an HttpServerRequest
and returns a formatted log string. Because the output is a string, it is not possible to access the context.
Use the new method LoggerHandler customFormatter(LoggerFormatter formatter)
instead. The method takes as input a custom formatter that gives access to the context.
3.1.8. New exception to handle HTTP failures
From Eclipse Vert.x 4.1.0, a new exception class io.vertx.ext.web.handler.HttpException
is available that can be used to handle HTTP failures. You can use the exception to specify custom status codes other than 500. For example, new HttpException(401, “Forbidden”)
indicates that the requests that are forbidden should return status code 401.
3.1.9. Support for RxJava 3
From Eclipse Vert.x 4.1.0, RxJava 3 is supported.
-
A new rxified API is available in the
io.vertx.rxjava3
package. -
Integration with Eclipse Vert.x JUnit5 is provided by the
vertx-junit5-rx-java3
binding.
3.1.10. Context server interceptor binds all types of data and is more secure
From Eclipse Vert.x 4.0.3, the ContextServerInterceptor.bind()
method binds all types of data to the context. The method is more secure now as it does not expose the storage details.
In releases prior to Eclipse Vert.x 4.0.3, the method used to bind only 'String' data type to context. It also exposed the storage details.
To use the updated ContextServerInterceptor.bind()
method, you must update your application.
The following example shows the code in releases prior to Eclipse Vert.x 4.0.3.
// Example code from previous releases class X extends ContextServerInterceptor { @Override public void bind(Metadata metadata, ConcurrentMap<String, String> context) {
The following example shows the replacing code fpr Eclipse Vert.x 4.0.3 release.
// Replacing code for Eclipse Vert.x 4.0.3 release class X extends ContextServerInterceptor { @Override public void bind(Metadata metadata) {
3.1.11. Matching of ending slash (/
) in route paths that end with wildcard character is no longer required
In releases prior to Eclipse Vert.x 4.0.3, if routes were defined with a path ending in slash and a wildcard /*
, the routes would be called only if the matching request also included the ending slash /
. This rule caused problems when the wildcard was empty.
From Eclipse Vert.x 4.0.3 onward, this rule is no longer applied. You can create routes whose paths end in a slash (/
). However, it is not mandatory to specify the slash in the request URLs.
Also, you can create and use request URLs to call routes that end with wildcards in their path instead of slash (/
). For example, routes with wildcard can be defined as /foo/*
. Here the route has to match an open wildcard at the end of the path. The request URL can be /foo
.
The table shows the behavior in Eclipse Vert.x 4.0.3 and previous releases when you send a request URL /foo/*
. You can see that the ending slash is optional in Eclipse Vert.x 4.0.3 and request matches the route.
Route | Eclipse Vert.x 4.0.3 | Releases prior to Eclipse Vert.x 4.0.3 |
---|---|---|
| Match | No Match |
| No Match | No Match |
| Match | Match |
| Match | Match |
3.1.12. Removed the autoRegistrationOfImporters
attribute from service discovery options
The autoRegistrationOfImporters
attribute has been removed from service discovery options.
3.1.13. Authenticate method in authentication provider class updated to support token
as input credentials
In releases prior to Eclipse Vert.x 4.0.3, the AuthenticationProvider.authenticate() method would incorrectly take jwt: someValue
as input credentials.
From Eclipse Vert.x 4.0.3, the AuthenticationProvider.authenticate() method has been updated and takes token: someValue
as input credentials. This change ensures that both JSON and typed APIs are consistent and can be used interchangeably.
The following code shows the implementation for the authenticate method in releases prior to Eclipse Vert.x 4.0.3.
new JsonObject().put("jwt", "token...");
The following code shows the implementation for the authenticate method in Eclipse Vert.x 4.0.3 release.
new JsonObject().put("token", "token...");
3.1.14. Get method for PEM keys returns Buffer
instead of a String
The PubSecKeyOptions.getBuffer()
method returns the PEM or secret key buffer. In releases prior to Eclipse Vert.x 4.0.2, the key buffer was stored and returned as a String
. However, it is recommended to save secrets as a Buffer
. From Eclipse Vert.x 4.0.2 onward, the method stores and returns the key buffer as a Buffer
. This change improves the security and handling of secrets.
The PubSecKeyOptions.setBuffer()
method continues to accept a String
argument. In the set method, an overload for Buffer has been added to safely handle non ASCII secret materials. This change does not require any change to the existing code.
3.1.15. Kubernetes service importer is no longer registered automatically
From Eclipse Vert.x 4, the KubernetesServiceImporter
discovery bridge is no longer registered automatically. Even if you have added the bridge in the classpath of your Maven project, it will not be automatically registered.
You must manually register the bridge after creating the ServiceDiscovery
instance.
3.1.16. Use future methods for asynchronous operations
Eclipse Vert.x 4 uses futures for asynchronous operations. Every callback method has a corresponding future method.
Futures can be used to compose asynchronous operations. When you use futures, the error handling is better. Therefore, it is recommended to use a combination of callback and futures in your applications.
3.1.17. No dependency on the Jackson Databind library
In Eclipse Vert.x 4, Jackson Databind is an optional Maven dependency. If you want to use this dependency, you must explicitly add it in the classpath. For example, if you are object mapping JSON, then you must explicitly add the dependency.
3.1.18. Handling deprecations and removals
In Eclipse Vert.x 4, new enhanced features have been provided. The old features and functions have been deprecated or removed in Eclipse Vert.x 4. Before you migrate your applications to Eclipse Vert.x 4, check for deprecations and removals.
The Java compiler generates warnings when deprecated APIs are used. You can use the compiler to check for deprecated methods while migrating applications to Eclipse Vert.x 4.
3.1.19. Support for distributed tracing
Eclipse Vert.x 4 supports distributed tracing. You can use tracing to monitor microservices and identify performance issues.
Eclipse Vert.x 4 integrates with OpenTracing system.
The following Eclipse Vert.x components can log traces:
- HTTP server and HTTP client
- Eclipse Vert.x SQL client
- Eclipse Vert.x Kafka client
Tracing is available as Technology Preview. Technology Preview features are not supported with Red Hat production service level agreements (SLAs), might not be functionally complete, and Red Hat does not recommend to use them for production. These features provide early access to upcoming product features, enabling customers to test functionality and provide feedback during the development process.
See Technology Preview Features Support Scope on the Red Hat Customer Portal for information about the support scope for Technology Preview features.
3.1.20. New publishing location for EventBus JavaScript Client
In Eclipse Vert.x 4, the EventBus JavaScript client, vertx-web-client.js
is not published as a Red Hat artifact in the Maven repository.
The client is published in the npm repository. You can access the client from the following location: @vertx/eventbus-bridge-client.js
3.1.21. Deploy Eclipse Vert.x applications using OpenShift Maven plugin
Use the OpenShift Maven plugin to deploy your Eclipse Vert.x applications on OpenShift. The Fabric8 Maven plugin is no longer supported. For more information, see the section migrating from Fabric8 Maven Plugin to Eclipse JKube.
3.1.22. Eclipse Vert.x metering labels for OpenShift
You can add metering labels to your Eclipse Vert.x pods and check Red Hat subscription details with the OpenShift Metering Operator.
- Do not add metering labels to any pods that an operator or a template deploys and manages.
- You can apply labels to pods using the Metering Operator on OpenShift Container Platform version 4.8 and earlier. From version 4.9 onward, the Metering Operator is no longer available without a direct replacement.
Eclipse Vert.x should use the following metering labels:
-
com.company: Red_Hat
-
rht.prod_name: Red_Hat_Runtimes
-
rht.prod_ver: 2022-Q1
-
rht.comp: Vert.x
-
rht.comp_ver: 4.1.8
-
rht.subcomp: <leave_blank>
-
rht.subcomp_t: application
Additional resources
3.1.23. Support for OpenJDK 8 and OpenJDK 11 RHEL 8 Universal Base Images (UBI8)
Eclipse Vert.x introduces support for building and deploying Eclipse Vert.x applications to OpenShift with OCI-compliant Universal Base Images for Red Hat OpenJDK 8 and Red Hat OpenJDK 11 on RHEL 8.
The RHEL 8 OpenJDK Universal Base Images replace the RHEL 8 OpenJDK builder images. The RHEL 8 OpenJDK base images are no longer supported for use with Eclipse Vert.x.
3.2. Deprecated features
This section lists the functionalities deprecated or removed in this release.
HttpServerOptions
Removed methods Replacing methods getMaxWebsocketFrameSize()
getMaxWebSocketFrameSize()
setMaxWebsocketFrameSize()
setMaxWebSocketFrameSize()
getMaxWebsocketMessageSize()
getMaxWebSocketMessageSize()
setMaxWebsocketMessageSize()
setMaxWebSocketMessageSize()
getPerFrameWebsocketCompressionSupported()
getPerFrameWebSocketCompressionSupported()
setPerFrameWebsocketCompressionSupported()
setPerFrameWebSocketCompressionSupported()
getPerMessageWebsocketCompressionSupported()
getPerMessageWebSocketCompressionSupported()
setPerMessageWebsocketCompressionSupported()
setPerMessageWebSocketCompressionSupported()
getWebsocketAllowServerNoContext()
getWebSocketAllowServerNoContext()
setWebsocketAllowServerNoContext()
setWebSocketAllowServerNoContext()
getWebsocketCompressionLevel()
getWebSocketCompressionLevel()
setWebsocketCompressionLevel()
setWebSocketCompressionLevel()
getWebsocketPreferredClientNoContext()
getWebSocketPreferredClientNoContext()
setWebsocketPreferredClientNoContext()
setWebSocketPreferredClientNoContext()
getWebsocketSubProtocols()
getWebSocketSubProtocols()
setWebsocketSubProtocols()
setWebSocketSubProtocols()
Eclipse Vert.x Web
Removed elements Replacing elements io.vertx.ext.web.Cookie
io.vertx.core.http.Cookie
io.vertx.ext.web.handler.CookieHandler
io.vertx.core.http.Cookie
io.vertx.ext.web.Locale
io.vertx.ext.web.LanguageHeader
RoutingContext.acceptableLocales()
RoutingContext.acceptableLanguages()
StaticHandler.create(String, ClassLoader)
---
SessionHandler.setAuthProvider(AuthProvider)
SessionHandler.addAuthProvider()
HandlebarsTemplateEngine.getHandlebars()
HandlebarsTemplateEngine.getResolvers()
HandlebarsTemplateEngine.setResolvers()
JadeTemplateEngine.getJadeConfiguration()
ThymeleafTemplateEngine.getThymeleafTemplateEngine()
ThymeleafTemplateEngine.setMode()
TemplateEngine.unwrap()
Messaging
Removed methods Replacing methods MessageProducer<T>.send(T)
MessageProducer<T>.write(T)
MessageProducer.send(T,Handler)
EventBus.request(String,Object,Handler)
EventBus
Removed methods Replacing methods EventBus.send(…, Handler<AsyncResult<Message<T>>>)
Message.reply(…, Handler<AsyncResult<Message<T>>>)
replyAndRequest
Handlers
Removed methods Replacing methods Future<T>.setHandler()
Future<T>.onComplete()
Future<T>.onSuccess()
Future<T>.onFailure()
HttpClientRequest.connectionHandler()
HttpClient.connectionHandler()
JSON
Removed Fields/Methods New methods Json.mapper()
fieldDatabindCodec.mapper()
Json.prettyMapper()
fieldDatabindCodec.prettyMapper()
Json.decodeValue(Buffer, TypeReference<T>)
JacksonCodec.decodeValue(Buffer, TypeReference)
Json.decodeValue(String, TypeReference<T>)
JacksonCodec.decodeValue(String, TypeReference)
JUnit5
Deprecated methods New methods VertxTestContext.succeeding()
VertxTestContext.succeedingThenComplete()
VertxTestContext.failing()
VertxTestContext.failingThenComplete()
Reactive Extensions (Rx)
Deprecated methods New methods WriteStreamSubscriber.onComplete()
WriteStreamSubscriber.onWriteStreamEnd()
WriteStreamSubscriber.onWriteStreamError()
Circuit breaker
Removed methods Replacing methods CircuitBreaker.executeCommand()
CircuitBreaker.execute()
CircuitBreaker.executeCommandWithFallback()
CircuitBreaker.executeWithFallback()
MQTT
Removed methods Replacing methods MqttWill.willMessage()
MqttWill.getWillMessage()
MqttWill.willTopic()
MqttWill.getWillTopic()
MqttWill.willQos()
MqttWill.getWillQos()
MqttAuth.username()
MqttAuth.getUsername()
MqttAuth.password()
MqttAuth.getPassword()
MqttClientOptions.setKeepAliveTimeSeconds()
MqttClientOptions.setKeepAliveInterval()
AMQP client
Removed methods Replacing methods AmqpClient.createReceiver(String address, Handler<AmqpMessage> messageHandler, …)
AmqpClient createReceiver(String address, Handler<AsyncResult<AmqpReceiver>> completionHandler)
AmqpConnection createReceiver(…, Handler<AsyncResult<AmqpReceiver>> completionHandler)
AmqpConnection createReceiver(String address, Handler<AsyncResult<AmqpReceiver>> completionHandler)
AmqpConnection createReceiver(.., Handler<AmqpMessage> messageHandler, Handler<AsyncResult<AmqpReceiver>> completionHandler)
AmqpConnection createReceiver(String address, Handler<AsyncResult<AmqpReceiver>> completionHandler)
Authentication and authorization
Removed elements Replacing elements OAuth2Options.isUseBasicAuthorizationHeader()
No replacing method
OAuth2Options.setUseBasicAuthorizationHeader()
No replacing method
OAuth2Options.getClientSecretParameterName()
No replacing method
OAuth2Options.setClientSecretParameterName()
No replacing method
OAuth2Auth.createKeycloak()
KeycloakAuth.create(vertx, JsonObject) ()
OAuth2Auth.create(Vertx, OAuth2FlowType, OAuth2ClientOptions)()
OAuth2Auth.create(vertx, new OAuth2ClientOptions().setFlow(YOUR_DESIRED_FLOW))
OAuth2Auth.create(Vertx, OAuth2FlowType)
OAuth2Auth.create(vertx, new OAuth2ClientOptions().setFlow(YOUR_DESIRED_FLOW))
User.isAuthorised()
User.isAuthorized()
AccessToken.refreshToken()
AccessToken.opaqueRefreshToken()
io.vertx.ext.auth.jwt.JWTOptions
data objectio.vertx.ext.jwt.JWTOptions
data objectSecretOptions
classPubSecKeyOptions
classDeprecated methods Replacing methods OAuth2Auth.decodeToken()
AuthProvider.authenticate()
OAuth2Auth.introspectToken()
AuthProvider.authenticate()
OAuth2Auth.getFlowType()
No replacing method
OAuth2Auth.loadJWK()
OAuth2Auth.jwkSet()
Oauth2ClientOptions.isUseAuthorizationHeader()
No replacing method
Deprecated class Replacing class AbstractUser
Create user objects using the ` User.create(JsonObject)` method.
AuthOptions
No replacing class
JDBCAuthOptions
JDBCAuthenticationOptions
for authentication andJDBCAuthorizationOptions
for authorizationJDBCHashStrategy
No replacing class
OAuth2RBAC
AuthorizationProvider
Oauth2Response
Recommended to use
WebClient
classKeycloakHelper
No replacing class
Service discovery
Removed methods Replacing methods ServiceDiscovery.create(…, Handler<ServiceDiscovery> completionHandler)
ServiceDiscovery.create(Vertx)
ServiceDiscovery.create(…, Handler<ServiceDiscovery> completionHandler)
ServiceDiscovery.create(Vertx, ServiceDiscoveryOptions)
Eclipse Vert.x configuration
Removed methods Replacing methods ConfigRetriever.getConfigAsFuture()
retriever.getConfig()
MongoDB client
Removed methods Replacing methods MongoClient.update()
MongoClient.updateCollection()
MongoClient.updateWithOptions()
MongoClient.updateCollectionWithOptions()
MongoClient.replace()
MongoClient.replaceDocuments()
MongoClient.replaceWithOptions()
MongoClient.replaceDocumentsWithOptions()
MongoClient.remove()
MongoClient.removeDocuments()
MongoClient.removeWithOptions()
MongoClient.removeDocumentsWithOptions()
MongoClient.removeOne()
MongoClient.removeDocument()
MongoClient.removeOneWithOptions
MongoClient.removeDocumentsWithOptions()
Clients with no shared data sources
Deprecated Methods New Methods MongoClient.createNonShared()
MongoClient.create()
JDBCClient.createNonShared()
wJDBCClient.create()
CassandraClient.createNonShared()
CassandraClient.create()
MailClient.createNonShared()
MailClient.create()
Hook methods
Removed Methods New Methods Context.addCloseHook()
No replacing method
Context.removeCloseHook()
No replacing method
Clone methods
Removed Methods New Methods KeyCertOptions.clone()
KeyCertOptions.copy()
TrustOptions.clone()
TrustOptions.copy()
SSLEngineOptions.clone()
SSLEngineOptions.copy()
VertxOptions
Removed Methods New Methods VertxOptions.equals()
No replacing method
VertxOptions.hashCode()
No replacing method
VertxOptions.fileResolverCachingEnabled()
FileSystemOptions.isFileCachingEnabled()
Pooled buffer
Removed Methods New Methods TCPSSLOptions.isUsePooledBuffers()
No replacing method
TCPSSLOptions.setUsePooledBuffers()
No replacing method
Chapter 4. Release components
4.1. Supported Artifacts introduced in this release
The following artifacts have been moved from Technology Preview to fully supported in this release:
-
vertx-auth-webauthn
-
vertx-config-vault
-
vertx-sql-client-templates
-
vertx-web-api-contract
4.2. Technology Preview artifacts introduced in this release
The following artifacts are provided as Technology Preview in this release.
vertx-mssql-client
The Eclipse Vert.x reactive MSSQL client is a client for Microsoft SQL server. It is an API that helps in database scalability and has low overhead. Since the API is reactive and non-blocking you can handle multiple database connections with a single thread.
vertx-http-proxy
The Eclipse Vert.x HTTP proxy is a reverse proxy. Using this module you can easily create proxies. The proxy server can also dynamically resolve the DNS queries from origin server.
vertx-web-proxy
The Eclipse Vert.x web proxy enables you to mount an Eclipse Vert.x HTTP proxy in an Eclipse Vert.x web router.
vertx-opentelemetry
Open Telemetry tracing is supported. You can use Open Telemetry for HTTP and event bus tracing.
vertx-web-sstore-infinispan
This Eclipse Vert.x web session store enables you to save session data in an Infinispan cache. The module is implemented on the Infinispan client so you can use it with either stand alone or clustered Eclipse Vert.x applications.
vertx-auth-webauthn
The Eclipse Vert.x authentication module
io.vertx.ext.auth.AuthProvider
interface has been split into two new interfaces:-
io.vertx.ext.auth.authentication.AuthenticationProvider
io.vertx.ext.auth.authorization.AuthorizationProvider
Authentication is a new feature in Eclipse Vert.x 4. In earlier releases, you could only check if a user was authorized to perform the tasks on the
User
object. This meant that the provider was responsible for both authentication and authorization of the user.In Eclipse Vert.x 4, the
User
object instances are not associated with a particular authentication provider. So you can authenticate and authorize a user using different providers.
-
vertx-opentracing
Eclipse Vert.x 4 supports distributed tracing. You can use tracing to monitor microservices and identify performance issues.
Eclipse Vert.x 4 integrates with OpenTracing system.
The following Eclipse Vert.x components can log traces:
- HTTP server and HTTP client
- Eclipse Vert.x SQL client
Eclipse Vert.x Kafka client
NoteFor more information about the support scope of Red Hat Technology Preview features, see Technology Preview Features Support Scope.
4.3. Artifacts removed in this release
No artifacts are removed in this release.
4.4. Artifacts deprecated in this release
No artifacts are marked as deprecated in this release.
Chapter 5. Fixed issues
This Eclipse Vert.x release incorporates all bugfixes from community release of version 4.1.8. Issues resolved in the community release are listed in the Eclipse Vert.x 4.1.8.
5.1. Google Guava classes included in GraphQL builds
In the Eclipse Vert.x 4.0.0 and 4.0.2 releases, the vertx-web-graphql
dependency was not usable. This was because an incomplete build of GraphQL Java with version 16.1.0.redhat-00001 was used. In the incomplete GraphQL build, the Guava classes were missing.
This issue is resolved in the Eclipse Vert.x 4.0.3 release. The release includes the GraphQL Java 16.1.0.redhat-00002 version, which is a complete build with Guava classes. These Guava classes are shaded into the jar.
5.2. vertx-opentracing
available in Eclipse Vert.x builds
The vertx-opentracing
dependency was introduced as a Technical Preview feature in Eclipse Vert.x 4.0.0. However, the dependency was not available in Eclipse Vert.x 4.0.0 and 4.0.2 releases.
This issue is resolved in Eclipse Vert.x 4.0.3 release. The release includes the vertx-opentracing
dependency.
Chapter 6. Known issues
6.1. KubernetesServiceImporter()
cannot be directly registered in Eclipse Vert.x Reactive Extensions (Rx)
- Description
-
You cannot directly register
KubernetesServiceImporter()
with the Reactive Extensions (Rx) for Eclipse Vert.x. - Cause
- Service importers do not have a generated RxJava 2 implementation.
- Workaround
-
You must create an instance of
KubernetesServiceImporter
and encapsulate it with{@link io.vertx.reactivex.servicediscovery.spi.ServiceImporter}
as shown in the following example:
{@link examples.RxServiceDiscoveryExamples#register(io.vertx.reactivex.servicediscovery.ServiceDiscovery)}
The following example shows how to register KubernetesServiceImporter()
in Eclipse Vert.x Reactive Extensions (Rx).
ServiceDiscovery discovery = ServiceDiscovery.create(vertx); discovery.getDelegate().registerServiceImporter(new KubernetesServiceImporter(), new JsonObject());
6.2. Red Hat AMQ Streams images are not available for IBM Z and IBM Power Systems
The Red Hat AMQ Streams Operator and Kafka images are not available for IBM Z and IBM Power Systems. Since the images are not available, the vertx-kafka-client
module is not certified to work with AMQ Streams on IBM Z and IBM Power Systems.
6.3. Connection between a RHEL 8-based database application and a RHEL 7-based MySQL 5.7 database fails due to TLS protocol version mismatch
Description
Attempting to open a TLS-secured connection using OpenSSL between an application container built on a RHEL 8-based OpenJDK builder image and a database container built on a RHEL 7-based MySQL 5.7 container image results in a connection failure due to a javax.net.ssl.SSLHandshakeException
at runtime: For more detail, view the issue in JIRA.
... Caused by: javax.net.ssl.SSLHandshakeException: No appropriate protocol (protocol is disabled or cipher suites are inappropriate) ...
Cause
The issue occurs due to a difference in the latest supported TLS protocol version between RHEL 7 and RHEL 8. The TLS implementation on RHEL 7 supports TLS protocol versions 1.0 (deprecated), 1.1, and 1.2. The TLS implementation on RHEL 8 also supports TLS protocol version 1.3, which is also the default TLS version used in RHEL 8-based builder images. This discrepancy may cause a TLS protocol version mismatch between application components while negotiating a TLS handshake, which in turn causes the connection between the application and database containers to fail.
Workaround
To prevent the issue described above, manually specify a TLS protocol version that is supported on both operating system versions in your database connection string. For example:
jdbc:mysql://testdb-mysql:3306/testdb?enabledTLSProtocols=TLSv1.2
6.4. False Connection reset by peer error messages when calling application endpoint
Making an HTTP request on an endpoint of an Eclipse Vert.x application using either the curl
tool or a Java HTTP client, produces the following error in the logs after each request:
io.vertx.core.net.impl.ConnectionBase SEVERE: java.io.IOException: Connection reset by peer
This behavior is caused by the interaction of the Netty application framework and the HAProxy load-balancer used by OpenShift. The error occurs due to existing HTTP connections being re-used by HAProxy without closing. Even though the error message is logged, no error condition occurs. HTTP requests are handled correctly and the application responds as expected.
Chapter 7. Advisories related to this release
The following advisories have been issued to document enhancements, bugfixes, and CVE fixes included in this release.