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Porting of example to Nima and removal of reactive dependencies #6839

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May 19, 2023
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Porting of example to Nima and removal of reactive dependencies #6839

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12 changes: 6 additions & 6 deletions examples/health/basics/pom.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -39,16 +39,16 @@

<dependencies>
<dependency>
<groupId>io.helidon.reactive.health</groupId>
<artifactId>helidon-reactive-health</artifactId>
<groupId>io.helidon.nima.webserver</groupId>
<artifactId>helidon-nima-webserver</artifactId>
</dependency>
<dependency>
<groupId>io.helidon.health</groupId>
<artifactId>helidon-health-checks</artifactId>
<groupId>io.helidon.nima.observe</groupId>
<artifactId>helidon-nima-observe-health</artifactId>
</dependency>
<dependency>
<groupId>io.helidon.reactive.webserver</groupId>
<artifactId>helidon-reactive-webserver</artifactId>
<groupId>io.helidon.health</groupId>
<artifactId>helidon-health-checks</artifactId>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
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71 changes: 41 additions & 30 deletions examples/health/basics/src/main/java/io/helidon/examples/health/basics/Main.java
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
/*
* Copyright (c) 2018, 2022 Oracle and/or its affiliates.
* Copyright (c) 2018, 2023 Oracle and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
Expand All @@ -17,12 +17,14 @@

import java.time.Duration;

import io.helidon.health.checks.HealthChecks;
import io.helidon.reactive.health.HealthSupport;
import io.helidon.reactive.webserver.Routing;
import io.helidon.reactive.webserver.WebServer;

import org.eclipse.microprofile.health.HealthCheckResponse;
import io.helidon.health.HealthCheckResponse;
import io.helidon.health.HealthCheckType;
import io.helidon.logging.common.LogConfig;
import io.helidon.nima.observe.ObserveFeature;
import io.helidon.nima.observe.health.HealthFeature;
import io.helidon.nima.observe.health.HealthObserveProvider;
import io.helidon.nima.webserver.WebServer;
import io.helidon.nima.webserver.http.HttpRouting;

/**
* Main class of health check integration example.
Expand All @@ -41,33 +43,42 @@ private Main() {
*/
public static void main(String[] args) {
serverStartTime = System.currentTimeMillis();
HealthSupport health = HealthSupport.builder()
.add(HealthChecks.healthChecks())
.addReadiness(() -> HealthCheckResponse.named("exampleHealthCheck")
.up()
.withData("time", System.currentTimeMillis())
.build())
.addStartup(() -> HealthCheckResponse.named("exampleStartCheck")
.status(isStarted())
.withData("time", System.currentTimeMillis())
.build())
.build();

Routing routing = Routing.builder()
.register(health)
.get("/hello", (req, res) -> res.send("Hello World!"))
.build();
// load logging
LogConfig.configureRuntime();

WebServer server = WebServer.builder()
.routing(Main::routing)
.start();

System.out.println("WEB server is up! http://localhost:" + server.port());
}

WebServer ws = WebServer.create(routing);
/**
* Set up HTTP routing.
* This method is used from tests as well.
*
* @param router HTTP routing builder
*/
static void routing(HttpRouting.Builder router) {
ObserveFeature observe = ObserveFeature.builder()
.useSystemServices(true)
.addProvider(HealthObserveProvider.create(HealthFeature.builder()
.useSystemServices(true)
.addCheck(() -> HealthCheckResponse.builder()
.status(HealthCheckResponse.Status.UP)
.detail("time", System.currentTimeMillis())
.build(), HealthCheckType.READINESS)
.addCheck(() -> HealthCheckResponse.builder()
.status(isStarted())
.detail("time", System.currentTimeMillis())
.build(), HealthCheckType.STARTUP)
.build()))
.build();

ws.start()
.thenApply(webServer -> {
String endpoint = "http://localhost:" + webServer.port();
System.out.println("Hello World started on " + endpoint + "/hello");
System.out.println("Health checks available on " + endpoint + "/health");
return null;
});

router.get("/hello", (req, res) -> res.send("Hello World!"))
.addFeature(observe);
}

private static boolean isStarted() {
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