Getting a programmer joke asynchronously with CompletableFuture, HttpClient, and Jackson.
Transcribed from the original LinkedIn image post.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
| import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.logging.Logger;
class Day33 {
private static final Logger logger = Logger.getLogger(Day33.class.getName());
public static void main(String[] args) {
try {
String webSite = CompletableFuture.supplyAsync(Day33::getWebSite)
.completeOnTimeout("Emptiness itself is a joke", 5, TimeUnit.SECONDS)
.get();
System.out.println("Joke of the day: \n");
System.out.println(webSite);
} catch (ExecutionException | InterruptedException e) {
logger.severe("Couldnt execute or got interrupted cause " + e);
}
}
private static String getWebSite() {
try {
HttpClient httpClient = HttpClient.newHttpClient();
HttpRequest httpRequest = HttpRequest
.newBuilder()
.uri(new URI("https://v2.jokeapi.dev/joke/Programming?blacklistFlags=nsfw,religious,political,racist,sexist,explicit&type=single"))
.GET()
.header("Accept", "application/json")
.build();
HttpResponse<String> response = httpClient.send(
httpRequest,
HttpResponse.BodyHandlers.ofString()
);
String joke = response.body();
ObjectMapper mapper = new ObjectMapper();
Joke jokeObj = mapper.readValue(joke, new TypeReference<Joke>() {});
return jokeObj.joke;
} catch (InterruptedException | URISyntaxException | IOException e) {
throw new RuntimeException(e);
}
}
@JsonIgnoreProperties(ignoreUnknown = true)
static class Joke {
@JsonProperty("joke")
public String joke;
}
}
|
The original LinkedIn graphic is preserved below.
