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mod-rxvertx | # Vert.x 2.x is * * deprecated * * - use | Reactive Programming library

 by   vert-x Java Version: v1.0.0-beta4 License: Non-SPDX

 by   vert-x Java Version: v1.0.0-beta4 License: Non-SPDX

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kandi X-RAY | mod-rxvertx Summary

mod-rxvertx is a Java library typically used in Programming Style, Reactive Programming applications. mod-rxvertx has no bugs, it has no vulnerabilities, it has build file available and it has low support. However mod-rxvertx has a Non-SPDX License. You can download it from GitHub, Maven.
# Vert.x 2.x is **deprecated** - use instead
Support
Support
Quality
Quality
Security
Security
License
License
Reuse
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kandi-support Support

  • mod-rxvertx has a low active ecosystem.
  • It has 108 star(s) with 31 fork(s). There are 19 watchers for this library.
  • It had no major release in the last 12 months.
  • There are 9 open issues and 24 have been closed. On average issues are closed in 78 days. There are 1 open pull requests and 0 closed requests.
  • It has a neutral sentiment in the developer community.
  • The latest version of mod-rxvertx is v1.0.0-beta4
mod-rxvertx Support
Best in #Reactive Programming
Average in #Reactive Programming
mod-rxvertx Support
Best in #Reactive Programming
Average in #Reactive Programming

quality kandi Quality

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

securitySecurity

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

license License

  • mod-rxvertx 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-rxvertx License
Best in #Reactive Programming
Average in #Reactive Programming
mod-rxvertx License
Best in #Reactive Programming
Average in #Reactive Programming

buildReuse

  • mod-rxvertx 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 are not available. Examples and code snippets are available.
  • It has 2298 lines of code, 269 functions and 32 files.
  • It has medium code complexity. Code complexity directly impacts maintainability of the code.
mod-rxvertx Reuse
Best in #Reactive Programming
Average in #Reactive Programming
mod-rxvertx Reuse
Best in #Reactive Programming
Average in #Reactive Programming
Top functions reviewed by kandi - BETA

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

  • Converts an Observable into a Stream
    • Issues a request to the core client .
      • Write the string as a text frame .
        • Creates an observable for connect stream .
          • Creates an observable stream from the given address .
            • Applies the given subscriber to the gate .
              • Returns an observable wrapper for websocket connection .
                • Creates a Func1 function for downloading a http response .
                  • Set the result as completed .
                    • Fire a result .

                      Get all kandi verified functions for this library.

                      Get all kandi verified functions for this library.

                      mod-rxvertx Key Features

                      # Vert.x 2.x is **deprecated** - use instead

                      mod-rxvertx Examples and Code Snippets

                      See all related Code Snippets

                      Usage

                      copy iconCopydownload iconDownload
                      void method(args...,Handler<T> handler)
                      

                      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-rxvertx

                      You can download it from GitHub, Maven.
                      You can use mod-rxvertx 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-rxvertx 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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