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SeeWeather | RxJavaRxBusRetrofitGlideMaterial Design Weather App | Reactive Programming library

 by   xcc3641 Java Version: V2.03 License: Apache-2.0

 by   xcc3641 Java Version: V2.03 License: Apache-2.0

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kandi X-RAY | SeeWeather Summary

SeeWeather is a Java library typically used in Programming Style, Reactive Programming applications. SeeWeather has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has medium support. You can download it from GitHub.
:partly_sunny: [@Deprecated]RxJava+RxBus+Retrofit+Glide+Material Design Weather App
Support
Support
Quality
Quality
Security
Security
License
License
Reuse
Reuse

kandi-support Support

  • SeeWeather has a medium active ecosystem.
  • It has 3489 star(s) with 754 fork(s). There are 140 watchers for this library.
  • It had no major release in the last 12 months.
  • SeeWeather has no issues reported. There are no pull requests.
  • It has a neutral sentiment in the developer community.
  • The latest version of SeeWeather is V2.03
SeeWeather Support
Best in #Reactive Programming
Average in #Reactive Programming
SeeWeather Support
Best in #Reactive Programming
Average in #Reactive Programming

quality kandi Quality

  • SeeWeather has 0 bugs and 0 code smells.
SeeWeather Quality
Best in #Reactive Programming
Average in #Reactive Programming
SeeWeather Quality
Best in #Reactive Programming
Average in #Reactive Programming

securitySecurity

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

license License

  • SeeWeather 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.
SeeWeather License
Best in #Reactive Programming
Average in #Reactive Programming
SeeWeather License
Best in #Reactive Programming
Average in #Reactive Programming

buildReuse

  • SeeWeather releases are available to install and integrate.
  • Build file is available. You can build the component from source.
  • Installation instructions are not available. Examples and code snippets are available.
  • SeeWeather saves you 1577 person hours of effort in developing the same functionality from scratch.
  • It has 3507 lines of code, 168 functions and 70 files.
  • It has low code complexity. Code complexity directly impacts maintainability of the code.
SeeWeather Reuse
Best in #Reactive Programming
Average in #Reactive Programming
SeeWeather Reuse
Best in #Reactive Programming
Average in #Reactive Programming
Top functions reviewed by kandi - BETA

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

  • Shows the icon dialog
  • Init OkHttpClient
  • Performs multi load .
  • Get the week number for a given time
  • Init the icon .
  • helper method to hide the item in the view
  • Open database .
  • Sets the location .
  • Click to view
  • Initializes the RecyclerView .

SeeWeather Key Features

:partly_sunny: [@Deprecated]RxJava+RxBus+Retrofit+Glide+Material Design Weather App

简介

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	<!--用于进行网络定位-->
	<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
	<!--用于访问GPS定位-->
	<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
	<!--获取运营商信息,用于支持提供运营商信息相关的接口-->
	<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
	<!--用于访问wifi网络信息,wifi信息会用于进行网络定位-->
	<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
	<!--这个权限用于获取wifi的获取权限,wifi信息会用来进行网络定位-->
	<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>
	<!--用于访问网络,网络定位需要上网-->
	<uses-permission android:name="android.permission.INTERNET"/>
	<!--用于读取手机当前的状态-->
	<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
	<!--写入扩展存储,向扩展卡写入数据,用于写入缓存定位数据-->
	<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
	<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

License

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Copyright 2017 HugoXie Inc.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

Community Discussions

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  • Send a list of objects one at time in reactive way
  • Changing the target of a `whenever` block from the inside
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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 SeeWeather

You can download it from GitHub.
You can use SeeWeather 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 SeeWeather 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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