top.zhacker.ms.reactor.webflux.controllers.SseController.java Source code

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Here is the source code for top.zhacker.ms.reactor.webflux.controllers.SseController.java

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/*
 * Copyright 2002-2016 the original author or authors.
 *
 * 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.
 */

package top.zhacker.ms.reactor.webflux.controllers;

import java.time.Duration;

import reactor.core.publisher.Flux;
import reactor.core.publisher.ReplayProcessor;

import org.springframework.http.codec.ServerSentEvent;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;
import top.zhacker.ms.reactor.webflux.model.Person;

/**
 * server sent event + EventSource(h5)
 */
@RestController
public class SseController {

    private ReplayProcessor<ServerSentEvent<String>> replayProcessor = ReplayProcessor
            .<ServerSentEvent<String>>create();

    @GetMapping("/sse/string")
    Flux<String> string() {
        return Flux.interval(Duration.ofSeconds(1)).map(l -> "foo " + l);
    }

    @GetMapping("/sse/person")
    Flux<Person> person() {
        return Flux.interval(Duration.ofSeconds(1)).map(l -> new Person(Long.toString(l), "foo", "bar"));
    }

    @GetMapping("/sse/event")
    Flux<ServerSentEvent<String>> event() {
        return Flux.interval(Duration.ofSeconds(1))
                .map(l -> ServerSentEvent.builder("foo\nbar").comment("bar\nbaz").id(Long.toString(l)).build());
    }

    @PostMapping("/sse/receive/{val}")
    public void receive(@PathVariable("val") String s) {
        replayProcessor.onNext(ServerSentEvent.builder(s).build());
    }

    @GetMapping("/sse/send")
    public Flux<ServerSentEvent<String>> send() {
        return replayProcessor.log("playground");
    }

}