Merge branch 'master' into bael-16656

ratpack/src/main/java/com/baeldung/rxjava/RatpackErrorHandlingApp.java

@@ -0,0 +1,27 @@
+package com.baeldung.rxjava;
+
+import ratpack.error.ServerErrorHandler;
+import ratpack.rx.RxRatpack;
+import ratpack.server.RatpackServer;
+import rx.Observable;
+
+public class RatpackErrorHandlingApp {
+
+    /**
+     * Try hitting http://localhost:5050/error to see the error handler in action
+     * @param args
+     * @throws Exception
+     */
+
+    public static void main(String[] args) throws Exception {
+        RxRatpack.initialize();
+        RatpackServer.start(def -> def.registryOf(regSpec -> regSpec.add(ServerErrorHandler.class, (ctx, throwable) -> {
+            ctx.render("Error caught by handler : " + throwable.getMessage());
+        }))
+            .handlers(chain -> chain.get("error", ctx -> {
+                Observable.<String> error(new Exception("Error from observable"))
+                    .subscribe(s -> {
+                    });
+            })));
+    }
+}

ratpack/src/main/java/com/baeldung/rxjava/RatpackObserveApp.java

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+package com.baeldung.rxjava;
+
+import java.util.List;
+
+import com.baeldung.model.Movie;
+import com.baeldung.rxjava.service.MoviePromiseService;
+import com.baeldung.rxjava.service.impl.MoviePromiseServiceImpl;
+
+import ratpack.exec.Promise;
+import ratpack.handling.Handler;
+import ratpack.jackson.Jackson;
+import ratpack.rx.RxRatpack;
+import ratpack.server.RatpackServer;
+
+public class RatpackObserveApp {
+    /**
+     * Try hitting http://localhost:5050/movies or http://localhost:5050/movie to see the application in action.
+     * 
+     * @param args
+     * @throws Exception
+     */
+    public static void main(String[] args) throws Exception {
+        RxRatpack.initialize();
+
+        Handler moviePromiseHandler = ctx -> {
+            MoviePromiseService promiseSvc = ctx.get(MoviePromiseService.class);
+            Promise<Movie> moviePromise = promiseSvc.getMovie();
+            RxRatpack.observe(moviePromise)
+                .subscribe(movie -> ctx.render(Jackson.json(movie)));
+        };
+
+        Handler moviesPromiseHandler = ctx -> {
+            MoviePromiseService promiseSvc = ctx.get(MoviePromiseService.class);
+            Promise<List<Movie>> moviePromises = promiseSvc.getMovies();
+            RxRatpack.observeEach(moviePromises)
+                .toList()
+                .subscribe(movie -> ctx.render(Jackson.json(movie)));
+        };
+
+        RatpackServer.start(def -> def.registryOf(regSpec -> regSpec.add(MoviePromiseService.class, new MoviePromiseServiceImpl()))
+            .handlers(chain -> chain.get("movie", moviePromiseHandler)
+                .get("movies", moviesPromiseHandler)));
+    }
+}

ratpack/src/main/java/com/baeldung/rxjava/RatpackParallelismApp.java

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+package com.baeldung.rxjava;
+
+import com.baeldung.model.Movie;
+import com.baeldung.rxjava.service.MovieObservableService;
+import com.baeldung.rxjava.service.impl.MovieObservableServiceImpl;
+
+import ratpack.jackson.Jackson;
+import ratpack.rx.RxRatpack;
+import ratpack.server.RatpackServer;
+import rx.Observable;
+
+public class RatpackParallelismApp {
+
+    /**
+     * Try hitting http://localhost:5050/movies to see the application in action.
+     * 
+     * @param args
+     * @throws Exception
+     */
+    public static void main(String[] args) throws Exception {
+        RxRatpack.initialize();
+        RatpackServer.start(def -> def.registryOf(regSpec -> regSpec.add(MovieObservableService.class, new MovieObservableServiceImpl()))
+            .handlers(chain -> chain.get("movies", ctx -> {
+                MovieObservableService movieSvc = ctx.get(MovieObservableService.class);
+                Observable<Movie> movieObs = movieSvc.getMovies();
+                Observable<String> upperCasedNames = movieObs.compose(RxRatpack::forkEach)
+                    .map(movie -> movie.getName()
+                        .toUpperCase())
+                    .serialize();
+                RxRatpack.promise(upperCasedNames)
+                    .then(movie -> {
+                        ctx.render(Jackson.json(movie));
+                    });
+            })));
+    }
+}

ratpack/src/main/java/com/baeldung/rxjava/RatpackPromiseApp.java

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+package com.baeldung.rxjava;
+
+import com.baeldung.model.Movie;
+import com.baeldung.rxjava.service.MovieObservableService;
+import com.baeldung.rxjava.service.impl.MovieObservableServiceImpl;
+
+import ratpack.handling.Handler;
+import ratpack.jackson.Jackson;
+import ratpack.rx.RxRatpack;
+import ratpack.server.RatpackServer;
+import rx.Observable;
+
+public class RatpackPromiseApp {
+
+    /**
+     * Try hitting http://localhost:5050/movies or http://localhost:5050/movie to see the application in action.
+     * 
+     * @param args
+     * @throws Exception
+     */
+    public static void main(String[] args) throws Exception {
+        RxRatpack.initialize();
+
+        Handler movieHandler = (ctx) -> {
+            MovieObservableService movieSvc = ctx.get(MovieObservableService.class);
+            Observable<Movie> movieObs = movieSvc.getMovie();
+            RxRatpack.promiseSingle(movieObs)
+                .then(movie -> ctx.render(Jackson.json(movie)));
+        };
+
+        Handler moviesHandler = (ctx) -> {
+            MovieObservableService movieSvc = ctx.get(MovieObservableService.class);
+            Observable<Movie> movieObs = movieSvc.getMovies();
+            RxRatpack.promise(movieObs)
+                .then(movie -> ctx.render(Jackson.json(movie)));
+        };
+
+        RatpackServer.start(def -> def.registryOf(rSpec -> rSpec.add(MovieObservableService.class, new MovieObservableServiceImpl()))
+            .handlers(chain -> chain.get("movie", movieHandler)
+                .get("movies", moviesHandler)));
+    }
+
+}

ratpack/src/main/java/com/baeldung/rxjava/service/MovieObservableService.java

@@ -0,0 +1,13 @@
+package com.baeldung.rxjava.service;
+
+import com.baeldung.model.Movie;
+
+import rx.Observable;
+
+public interface MovieObservableService {
+
+    Observable<Movie> getMovies();
+
+    Observable<Movie> getMovie();
+
+}

ratpack/src/main/java/com/baeldung/rxjava/service/MoviePromiseService.java

@@ -0,0 +1,15 @@
+package com.baeldung.rxjava.service;
+
+import java.util.List;
+
+import com.baeldung.model.Movie;
+
+import ratpack.exec.Promise;
+
+public interface MoviePromiseService {
+
+    Promise<List<Movie>> getMovies();
+
+    Promise<Movie> getMovie();
+
+}

ratpack/src/main/java/com/baeldung/rxjava/service/impl/MovieObservableServiceImpl.java

@@ -0,0 +1,35 @@
+package com.baeldung.rxjava.service.impl;
+
+import com.baeldung.model.Movie;
+import com.baeldung.rxjava.service.MovieObservableService;
+
+import rx.Observable;
+
+public class MovieObservableServiceImpl implements MovieObservableService {
+
+    @Override
+    public Observable<Movie> getMovie() {
+        Movie movie = new Movie();
+        movie.setName("The Godfather");
+        movie.setYear("1972");
+        movie.setDirector("Coppola");
+        movie.setRating(9.2);
+        return Observable.just(movie);
+    }
+
+    @Override
+    public Observable<Movie> getMovies() {
+        Movie movie = new Movie();
+        movie.setName("The Godfather");
+        movie.setYear("1972");
+        movie.setDirector("Coppola");
+        movie.setRating(9.2);
+        Movie movie2 = new Movie();
+        movie2.setName("The Godfather Part 2");
+        movie2.setYear("1974");
+        movie2.setDirector("Coppola");
+        movie2.setRating(9.0);
+        return Observable.just(movie, movie2);
+
+    }
+}

ratpack/src/main/java/com/baeldung/rxjava/service/impl/MoviePromiseServiceImpl.java

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+package com.baeldung.rxjava.service.impl;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import com.baeldung.model.Movie;
+import com.baeldung.rxjava.service.MoviePromiseService;
+
+import ratpack.exec.Promise;
+
+public class MoviePromiseServiceImpl implements MoviePromiseService {
+
+    @Override
+    public Promise<Movie> getMovie() {
+        Movie movie = new Movie();
+        movie.setName("The Godfather");
+        movie.setYear("1972");
+        movie.setDirector("Coppola");
+        movie.setRating(9.2);
+        return Promise.value(movie);
+    }
+
+    @Override
+    public Promise<List<Movie>> getMovies() {
+        Movie movie = new Movie();
+        movie.setName("The Godfather");
+        movie.setYear("1972");
+        movie.setDirector("Coppola");
+        movie.setRating(9.2);
+        Movie movie2 = new Movie();
+        movie2.setName("The Godfather Part 2");
+        movie2.setYear("1974");
+        movie2.setDirector("Coppola");
+        movie2.setRating(9.0);
+        List<Movie> movies = new ArrayList<>();
+        movies.add(movie);
+        movies.add(movie2);
+        return Promise.value(movies);
+    }
+
+}