smallrye-mutiny | Intuitive Event-Driven Reactive Programming Library | Reactive Programming library

 by   smallrye Java Version: 2.2.0 License: Apache-2.0

kandi X-RAY | smallrye-mutiny Summary

kandi X-RAY | smallrye-mutiny Summary

smallrye-mutiny is a Java library typically used in Programming Style, Reactive Programming applications. smallrye-mutiny has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has low support. You can download it from GitHub, Maven.

Mutiny can be used in any Java application exhibiting asynchrony. From reactive microservices, data streaming, event processing to API gateways and network utilities, Mutiny is a great fit.

            kandi-support Support

              smallrye-mutiny has a low active ecosystem.
              It has 671 star(s) with 105 fork(s). There are 23 watchers for this library.
              There were 1 major release(s) in the last 12 months.
              There are 12 open issues and 242 have been closed. On average issues are closed in 150 days. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of smallrye-mutiny is 2.2.0

            kandi-Quality Quality

              smallrye-mutiny has 0 bugs and 0 code smells.

            kandi-Security Security

              smallrye-mutiny has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              smallrye-mutiny code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              smallrye-mutiny is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              smallrye-mutiny releases are available to install and integrate.
              Deployable package is available in Maven.
              Build file is available. You can build the component from source.
              Installation instructions, examples and code snippets are available.
              smallrye-mutiny saves you 54592 person hours of effort in developing the same functionality from scratch.
              It has 77176 lines of code, 6752 functions and 867 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed smallrye-mutiny and discovered the below as its top functions. This is intended to give you an instant insight into smallrye-mutiny implemented functionality, and help decide if they suit your requirements.
            • Perform post - release checks
            • Gets the tag from a list of tags
            • Creates the release description
            • Perform a new release
            • Computes the next release of a given tag
            • Retrieves the last tag from the repository
            • Waits for the pom
            • Download a list of urls
            • Create a UniAndGroupIterable from an Iterable
            • Creates a new pipeline using the given multicast subscriber
            • Connect to the given connection
            • Subscribes a downstream sub - subscriber to the downstream
            • Convenience method for subclasses
            • Convenience method for submits a collector
            • Request n
            • Applies the given subscriber to the result
            • Overrides superclass method
            • Utility method for submits a stream
            • Subscribes the subscriber to the actual subscriber
            • Subscribes the subscriber
            • Subscribes the resource with the given subscriber
            • Subscribes to the given ui
            • Add an entry
            • Entry point for the maven tool
            • Runs the diff and returns the differences
            • Inserts an element into the queue
            Get all kandi verified functions for this library.

            smallrye-mutiny Key Features

            No Key Features are available at this moment for smallrye-mutiny.

            smallrye-mutiny Examples and Code Snippets

            Mutiny - Kafka writes happening sequentially
            Lines of Code : 18dot img1License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            public Uni> send(InputSample inputSample) {
                // This could be injected directly inside your producer
                ObjectMapper mapper = new ObjectMapper();
                // Send each item to Kafka and collect resulting Unis
                List> uniList 

            Community Discussions


            How to test pollling pattern in Mutiny on Quarkus?
            Asked 2021-Nov-06 at 13:16

            I would like to test a simple polling example from and poll the data of a service into a Kafka stream.

            This is a simplified example of a class I want to test:



            Answered 2021-Nov-06 at 09:23

            If I see it correctly, you assert that the stream is completed:



            How to run blocking codes on another thread and make http request return immediately
            Asked 2021-Sep-27 at 00:13

            We started a new project with Quarkus and Mutiny, and created a bunch of endpoints with Quarkus @Funq, everything has been working fine so far. Now we want to process something very time-consuming in one of the endpoints, and what we are expecting is, once user clicks a button to send the http request from frontend and hits this specific endpoint, we are going to return 202 Accepted immediately, leaving the time-consuming operation processing in another thread from backend, then send notification email accordingly to user once it completes.

            I understand this can be done with @Async or CompletableFuture, but now we want to do this with Mutiny. Based on how I read Mutiny documentation here, runSubscriptionOn will avoid blocking the caller thread by running the time-consuming method on another thread, and my testing showed the time-consuming codes did get executed on a different thread. However, the http request does not return immediately, it is still pending until the time-consuming method finishes executing (as I observe in the browser's developer tool). Did I misunderstand how runSubscriptionOn works? How do I implement this feature with Mutiny?

            My @Funq endpoint looks like this



            Answered 2021-Sep-25 at 15:18

            By returning a Uni, you're basically saying that the response is complete when the Uni completes. What you want is to run the action on a thread pool and return a complete response (Uni or not, that doesn't matter).

            By the way, you're creating an extra thread pool in the method, for each request, and don't shut it down. That's wrong. You want to create one thread pool for all requests (e.g. in a @PostConstruct method) and ideally also shut it down when the application ends (in a @PreDestroy method).



            How to convert Future to Uni?
            Asked 2021-May-07 at 12:30

            I have a Java API that returns a Future instance. I need to convert it to a Uni. From the mutiny documentation, I see it is possible to convert a CompletionStage to Uni, but I couldn't find how to convert a standard Future to Uni.

            Q: How to convert java.util.concurrent.Future to Uni?

            I understand that I can warp it's get() call to Uni, but it would be blocking, isn't it?



            Answered 2021-May-07 at 12:30

            The problem with Future is that it's a blocking API and, unlike CompletionStage, there is no way to chain a stream of operations.

            However, Mutiny has a way to deal with blocking API:



            Connect MyRequestService to Reactive REST GET endpoint with Quarkus/Mutiny through callback method
            Asked 2021-Apr-10 at 08:07

            Last week i had my first 👊✨💪 rounds with the Mutiny library because i needed a Reactive REST endpoint in my Quarkus project. This was not as obvious as it sounds so i thought i'll share my new insights about the Mutiny library in Quarkus;

            Quarkus documentation specifies the Mutiny library as the preferred library for Reactive use-cases;

            For example;

            what stood out is that most Mutiny examples are using a new String as an example. So, my question remained;

            how do i connect MyRequestService with Mutiny in Quarkus

            This would be something as:



            Answered 2021-Apr-04 at 18:51

            Mutiny uses an Emitter when integrating with callback-based APIs;


            So MyRequestService, or an underlying callback object, needs to implement an UniEmitter Consumer. But first, to become Reactive, my old blocking REST endpoint needs to return Uni instead of MyJsonResult;

            The ServiceResource just forwards the call to the Service.

            MyRequestService creates a MyJsonResultConsumer and delivers this to the Mutiny Emitter. The resulting Uni is returned to the ServiceResource.

            Finally MyJsonResultConsumer is here the actual callback object; method ready() calls complete() on the UniEmitter concluding the callback towards Mutiny.

            Remember that Mutiny needs to provide the UniEmitter with a call(back) to accept(), so you should check for null pointers (or use a Semaphore oid). 👮🏻‍♂️



            Can vertx and traditional jdbc clients work together in quarkus?
            Asked 2021-Apr-01 at 11:03

            In my quarkus project, I have added the following dependencies to create a non-blocking asynchronous project



            Answered 2021-Apr-01 at 11:03

            Quarkus can be reactive or non reactive, it depends which extensions you choose to use.

            Hibernate ORM Panache is for when you want to access the database in a non reactive way using Hibernate ORM and Panache. The same is true for JDBC, it's not reactive so you have to use something else if you want your whole app to be reactive.

            In this scenario, you probably want to try these two extensions:

            On the Quarkus website, there is also an intro on reactive for Quarkus.

            Example of how to use the Vert.x SQL client from the guide:



            How to deal with whole compensation using Mutiny?
            Asked 2020-Nov-12 at 12:40

            Working on Quarkus and SmallRye Mutiny, I don't know how to deal with compensations.

            I have a list of employees and I have to update all of them in the database. The Data Access Object (EmployeeDao) has the following method: public Uni update(Long id, String name, Long deptId). It expect to receive the Employee's fields.

            Also, I have to return a Uni to notify if all the updates went fine or not. Something as is given below:



            Answered 2020-Nov-12 at 12:40

            If I understand correctly, you want to execute a set of async operations and combine them. For this, you can do something like:



            How do i sort a Multi in smallrye mutiny
            Asked 2020-Oct-19 at 11:59

            Other reactive libraries like project reactor offer sort methods for Publishers but there is no such method in mutiny. Their documentation doesn't even talk about it.


            Right now i'm achieving the said functionality by doing this



            Answered 2020-Oct-19 at 11:59

            I don't believe there is a built-in/better way to do this.

            Mutiny generally prizes itself on having a "cut-down" set of operators in its core, and letting you build up other, more complex operators as needed. They're trying to avoid the reactor situation where you 100+ methods on a couple of core types, and without a lot of background knowledge it's often difficult to know what ones are relevant.

            IMHO that's no bad thing. Other reactive frameworks definitely have these built-in sort() operators, but there's a danger here - people assume they can still treat them as infinite, magically sorted publishers, because there's no sign of any collections anywhere. You can't of course - internally these frameworks have to maintain an underlying collection to sort the data, and then just output the contents of that when the stream is complete. This isn't that clear however, and ignorance of this fact can often lead to unintended slowdowns and OutOfMemoryError. On the contrary, in your example, it's immediately obvious that this stream uses an underlying collection for sorting your data.

            There's just one minor thing I'd change in your example, but not really related to your question - I'd use:


   your map call instead of sorting a mutable list. Mutating data structures in a reactive stream is a bit of a code smell.



            Mutiny: recover from a single uni timeout
            Asked 2020-Oct-09 at 05:30

            From a quarkus (kotlin) appli, I request multiple endpoints (same endpoint but with different base URL) in parallel, then I combine the uni in order to not wait sequentially for each response.

            Here is a sample:



            Answered 2020-Oct-09 at 05:30

            Instead of .ifNoItem().after(Duration.ofMillis(1)).recoverWithItem(null), use: .ifNoItem().after(Duration.ofMillis(1).fail() which will propagate the failure.



            Vertx is not available in Quarkus vertx munity web client extesions
            Asked 2020-Jun-02 at 13:58

            I tried to test the reactive web client provided by vertx munity web client.

            I followed the official guide Quarkus - Getting Started with Reactive.

            And added the following in dependencies.



            Answered 2020-Jun-02 at 13:58

            You need to add the io.quarkus:quarkus-vertx dependency to your POM to activate the Vertx extension. io.smallrye.reactive:smallrye-mutiny-vertx-web-client is an external dependency that does not activate any extension.


            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install smallrye-mutiny

            Mutiny is built with Apache Maven, so all you need is:. We currently support Java 8 and beyond. Mutiny passes the Reactive Streams TCK.


            See the contributing guidelines.
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