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mod-rxjava | provides support for Reactive Extensions | Reactive Programming library

 by   meez Java Version: Current License: Non-SPDX

 by   meez Java Version: Current License: Non-SPDX

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kandi X-RAY | mod-rxjava Summary

mod-rxjava is a Java library typically used in Programming Style, Reactive Programming applications. mod-rxjava has no bugs, it has no vulnerabilities, it has build file available and it has low support. However mod-rxjava has a Non-SPDX License. You can download it from GitHub.
RxJava extension for VertX.
Support
Support
Quality
Quality
Security
Security
License
License
Reuse
Reuse

kandi-support Support

  • mod-rxjava has a low active ecosystem.
  • It has 12 star(s) with 3 fork(s). There are 9 watchers for this library.
  • It had no major release in the last 12 months.
  • mod-rxjava has no issues reported. There are 1 open pull requests and 0 closed requests.
  • It has a neutral sentiment in the developer community.
  • The latest version of mod-rxjava is current.
mod-rxjava Support
Best in #Reactive Programming
Average in #Reactive Programming
mod-rxjava Support
Best in #Reactive Programming
Average in #Reactive Programming

quality kandi Quality

  • mod-rxjava has 0 bugs and 0 code smells.
mod-rxjava Quality
Best in #Reactive Programming
Average in #Reactive Programming
mod-rxjava Quality
Best in #Reactive Programming
Average in #Reactive Programming

securitySecurity

  • mod-rxjava has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
  • mod-rxjava code analysis shows 0 unresolved vulnerabilities.
  • There are 0 security hotspots that need review.
mod-rxjava Security
Best in #Reactive Programming
Average in #Reactive Programming
mod-rxjava Security
Best in #Reactive Programming
Average in #Reactive Programming

license License

  • mod-rxjava has a Non-SPDX License.
  • Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.
mod-rxjava License
Best in #Reactive Programming
Average in #Reactive Programming
mod-rxjava License
Best in #Reactive Programming
Average in #Reactive Programming

buildReuse

  • mod-rxjava releases are not available. You will need to build from source code and install.
  • Build file is available. You can build the component from source.
  • Installation instructions are not available. Examples and code snippets are available.
  • mod-rxjava saves you 1234 person hours of effort in developing the same functionality from scratch.
  • It has 2778 lines of code, 370 functions and 37 files.
  • It has medium code complexity. Code complexity directly impacts maintainability of the code.
mod-rxjava Reuse
Best in #Reactive Programming
Average in #Reactive Programming
mod-rxjava Reuse
Best in #Reactive Programming
Average in #Reactive Programming
Top functions reviewed by kandi - BETA

kandi has reviewed mod-rxjava and discovered the below as its top functions. This is intended to give you an instant insight into mod-rxjava implemented functionality, and help decide if they suit your requirements.

  • Send a request to the core client .
    • Converts an Observable to a Stream
      • Dispatches result to the observer .
        • Returns an observable that subscribes every message with a specified delay .
          • Publishes a websocket event .
            • creates an Observable from the given address
              • This method is called when a subscription is complete .
                • Creates a Func1 function for downloading http response
                  • Connect to the server at the specified port .
                    • Handle incoming message .

                      Get all kandi verified functions for this library.

                      Get all kandi verified functions for this library.

                      mod-rxjava Key Features

                      The module wraps the VertX core objects to add Observable support so it is tightly bound to the VertX release.

                      This module also contains the Netflix RxJava library.

                      The module can be installed as a non-running module or built as a standalone jar and included in other modules.

                      EventBus

                      FileSystem

                      HttpServer

                      HttpClient

                      NetServer

                      NetClient

                      Timer

                      SockJSServer

                      mod-rxjava Examples and Code Snippets

                      See all related Code Snippets

                      default

                      copy iconCopydownload iconDownload
                      RxVertx rxVertx=new RxVertx(vertx);
                      
                      Observable<String> req=rxVertx.eventBus().sendRx("foo");
                      
                      req
                        .subscribe(new Action1<String>(){
                          public void call(String resp) {
                            System.out.println("got response");
                          }
                        })

                      See all related Code Snippets

                      Community Discussions

                      Trending Discussions on Reactive Programming
                      • How to use RXJS to share a pool of resources between multiple consumers
                      • How to implement the logic without state variables
                      • Caching parallel request in Spring Webflux Mono
                      • Mirror at most 1 value from source, then temporarily drop values until another observable emits
                      • Project Reactor: buffer with parallel execution
                      • UseCases or Interactors with Kt Flow and Retrofit
                      • DT: Dynamically change column values based on selectinput from another column in R shiny app
                      • Send a list of objects one at time in reactive way
                      • Changing the target of a `whenever` block from the inside
                      • How to apply back pressure with Combine buffer operator to avoid flatMap to ask an infinite demand upstream?
                      Trending Discussions on Reactive Programming

                      QUESTION

                      How to use RXJS to share a pool of resources between multiple consumers

                      Asked 2022-Mar-31 at 12:55

                      How can we divide work of consumers over a limited set of resources in RXJS?

                      I have a Pool class here (simplified):

                      class Pool<TResource> {
                      
                        private readonly resource$: Observable<TResource>;
                      
                        constructor(resource$: Observable<TResource>) {
                          this.resource$ = resource$.pipe(
                            // We use share replay here, so multiple calls to `schedule` will share the resources
                            shareReplay()
                          );
                        }
                      
                        /**
                         * Schedules a task to be executed on resources in the pool. Each input is paired with a resource, which allows async work to be done.
                         * @param input$ The inputs to pair up with a resource.
                         * @param task The task to execute on each resource
                         */
                        public schedule<TIn, TOut>(input$: Observable<TIn>, task: (resource: TResource, input: TIn) => Promise<TOut> | TOut): Observable<TOut> {
                          const recycleBin = new Subject<TResource>();
                          const resource$ = merge(recycleBin, this.resource$);
                      
                          return zip(resource$, input$).pipe(
                            mergeMap(async ([resource, input]) => {
                              const output = await task(resource, input);
                              //  Recycles a resource so its re-emitted from the `resource$` observable.
                              recycleBin.next(resource);
                              return output;
                            }),
                            tap({ complete: () => recycleBin.complete() })
                          );
                        }
                      }
                      

                      You can use it like this:

                      class CalculatorResource {
                        expensiveCalculation(n: number) {
                          return new Promise<number>(res => setTimeout(() => res(n*2), 1000));
                        }
                      }
                      
                      const pool = new Pool(of(new CalculatorResource(), new CalculatorResource()));
                      const input$ = of(1, 2, 3, 4);
                      const output$ = pool.schedule(input$, (calc, n) => calc.expensiveCalculation(n));
                      output$.subscribe(console.log)
                      // ...wait 1 sec
                      // Logs 2
                      // Logs 4
                      // ...wait 1 sec
                      // Logs 6
                      // Logs 8
                      

                      This works as expected.

                      However, when we call schedule in parallel, the resources will also be distributed in parallel. This is not good, we want the resources to be distributed evenly, since the nature of the tasks they do make it so they can't be called in parallel.

                      const pool = new Pool(of(new CalculatorResource(), new CalculatorResource()));
                      const input$ = of(1, 2, 3, 4);
                      const parallelInput$ = of(5, 6, 7, 8);
                      pool.schedule(input$, (calc, n) =>
                        calc.expensiveCalculation(n)
                      ).subscribe(console.log);
                      pool.schedule(parallelInput$, (calc, n) =>
                        calc.expensiveCalculation(n)
                      ).subscribe(console.log);
                      // Actual output:
                      
                      // ...wait 1 sec
                      // Logs 2
                      // Logs 4
                      // Logs 10
                      // Logs 12
                      // ...wait 1 sec
                      // Logs 6
                      // Logs 8
                      // Logs 14
                      // Logs 16
                      
                      // What i would like to see:
                      // ...wait 1 sec
                      // Logs 2
                      // Logs 4
                      // ...wait 1 sec
                      // Logs 10
                      // Logs 12
                      // ...wait 1 sec
                      // Logs 6
                      // Logs 8
                      // ...wait 1 sec
                      // Logs 14
                      // Logs 16
                      

                      ANSWER

                      Answered 2022-Mar-31 at 12:55

                      So the main thing is you need to share the actual part that does the work, not only the resources.

                      Here's a solution from me:

                      https://stackblitz.com/edit/rxjs-yyxjh2?devToolsHeight=100&file=index.ts

                      import { merge, Observable, Observer, of, Subject, zip } from 'rxjs';
                      import { ignoreElements, concatMap, switchMap } from 'rxjs/operators';
                      
                      class Pool<TResource> {
                        private readonly resourceFree$ = new Subject<TResource>();
                        private readonly dispatcher$ = new Subject<{
                          execute: (resource: TResource) => any;
                          observer: Observer<any>;
                        }>();
                        private freeResources$ = merge(this.resource$, this.resourceFree$);
                        readonly doWork$ = zip(this.freeResources$, this.dispatcher$).pipe(
                          switchMap(async ([resource, work]) => {
                            try {
                              const result = await work.execute(resource);
                              work.observer.next(result);
                              work.observer.complete();
                            } catch (err) {
                              work.observer.error(err);
                            }
                            this.resourceFree$.next(resource);
                          }),
                          ignoreElements()
                        );
                      
                        constructor(private resource$: Observable<TResource>) {}
                      
                        public schedule<TIn, TOut>(
                          input$: Observable<TIn>,
                          task: (resource: TResource, input: TIn) => Promise<TOut> | TOut
                        ): Observable<TOut> {
                          return input$.pipe(
                            //you can use mergeMap here as well, depends on how fast you want to consume inputs
                            concatMap((input) => {
                              const work = {
                                execute: (r) => task(r, input),
                                observer: new Subject<TOut>(),
                              };
                              this.dispatcher$.next(work);
                              return work.observer;
                            })
                          );
                        }
                      }
                      
                      class CalculatorResource {
                        expensiveCalculation(n: number) {
                          return new Promise<number>((res) => setTimeout(() => res(n * 2), 1000));
                        }
                      }
                      
                      const pool = new Pool(of(new CalculatorResource(), new CalculatorResource()));
                      pool.doWork$.subscribe(); //this is to start the pool dispatcher
                      
                      const input$ = of(1, 2, 3, 4);
                      const parallelInput$ = of(5, 6, 7, 8);
                      pool
                        .schedule(input$, (calc, n) => calc.expensiveCalculation(n))
                        .subscribe(console.log, undefined, () => console.log('1st done'));
                      pool
                        .schedule(parallelInput$, (calc, n) => calc.expensiveCalculation(n))
                        .subscribe(console.log, undefined, () => console.log('2nd done'));
                      
                      setTimeout(() => {
                        pool
                          .schedule(parallelInput$, (calc, n) => calc.expensiveCalculation(n))
                          .subscribe(console.log, undefined, () => console.log('3rd done'));
                      }, 5000);
                      

                      Source https://stackoverflow.com/questions/71689376

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

                      Vulnerabilities

                      No vulnerabilities reported

                      Install mod-rxjava

                      You can download it from GitHub.
                      You can use mod-rxjava like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the mod-rxjava component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

                      Support

                      For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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