Adjust after review.

spring-cloud-commons/src/main/java/org/springframework/cloud/client/DefaultServiceInstance.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2022 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.
@@ -18,6 +18,7 @@ package org.springframework.cloud.client;
 
 import java.net.URI;
 import java.util.LinkedHashMap;
+import java.util.List;
 import java.util.Map;
 import java.util.Objects;
 
@@ -28,15 +29,20 @@ import java.util.Objects;
  * @author Tim Ysewyn
  * @author Charu Covindane
  * @author Neil Powell
+ * @author Olga Maciaszek-Sharma
  */
 public class DefaultServiceInstance implements ServiceInstance {
 
+	private final List<String> secureSchemes = List.of("https", "wss");
+
 	private String instanceId;
 
 	private String serviceId;
 
 	private String host;
 
+	private String scheme;
+
 	private int port;
 
 	private boolean secure;
@@ -45,6 +51,7 @@ public class DefaultServiceInstance implements ServiceInstance {
 
 	private URI uri;
 
+
 	/**
 	 * @param instanceId the id of the instance.
 	 * @param serviceId the id of the service.
@@ -55,12 +62,27 @@ public class DefaultServiceInstance implements ServiceInstance {
 	 */
 	public DefaultServiceInstance(String instanceId, String serviceId, String host, int port, boolean secure,
 			Map<String, String> metadata) {
+		this(instanceId, serviceId, host, port, secure, metadata, secure ? "https" : "http");
+	}
+
+	/**
+	 * @param instanceId the id of the instance.
+	 * @param serviceId the id of the service.
+	 * @param host the host where the service instance can be found.
+	 * @param port the port on which the service is running.
+	 * @param secure indicates whether or not the connection needs to be secure.
+	 * @param metadata a map containing metadata.
+	 * @param scheme the protocol used to connect to the service instance.
+	 */
+	public DefaultServiceInstance(String instanceId, String serviceId, String host, int port, boolean secure,
+			Map<String, String> metadata, String scheme) {
 		this.instanceId = instanceId;
 		this.serviceId = serviceId;
 		this.host = host;
 		this.port = port;
 		this.secure = secure;
 		this.metadata = metadata;
+		this.scheme = scheme;
 	}
 
 	/**
@@ -77,6 +99,19 @@ public class DefaultServiceInstance implements ServiceInstance {
 	public DefaultServiceInstance() {
 	}
 
+	/**
+	 * @param instanceId the id of the instance.
+	 * @param serviceId the id of the service.
+	 * @param host the host where the service instance can be found.
+	 * @param port the port on which the service is running.
+	 * @param secure indicates whether or not the connection needs to be secure.
+	 * @param scheme the protocol used to connect to the service instance.
+	 */
+	public DefaultServiceInstance(String instanceId, String serviceId, String host, int port, boolean secure,
+			String scheme) {
+		this(instanceId, serviceId, host, port, secure, new LinkedHashMap<>(), scheme);
+	}
+
 	/**
 	 * Creates a URI from the given ServiceInstance's host:port.
 	 * @param instance the ServiceInstance.
@@ -84,7 +119,7 @@ public class DefaultServiceInstance implements ServiceInstance {
 	 * if port not set.
 	 */
 	public static URI getUri(ServiceInstance instance) {
-		String scheme = (instance.isSecure()) ? "https" : "http";
+		String scheme = instance.getScheme();
 		int port = instance.getPort();
 		if (port <= 0) {
 			port = (instance.isSecure()) ? 443 : 80;
@@ -148,8 +183,8 @@ public class DefaultServiceInstance implements ServiceInstance {
 		this.uri = uri;
 		this.host = this.uri.getHost();
 		this.port = this.uri.getPort();
-		String scheme = this.uri.getScheme();
-		if ("https".equals(scheme)) {
+		scheme = this.uri.getScheme();
+		if (secureSchemes.contains(scheme)) {
 			this.secure = true;
 		}
 	}
@@ -179,4 +214,9 @@ public class DefaultServiceInstance implements ServiceInstance {
 		return Objects.hash(instanceId, serviceId, host, port, secure, metadata);
 	}
 
+	@Override
+	public String getScheme() {
+		return scheme;
+	}
+
 }

spring-cloud-commons/src/main/java/org/springframework/cloud/client/discovery/simple/SimpleDiscoveryProperties.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2022 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.
@@ -87,4 +87,8 @@ public class SimpleDiscoveryProperties implements InitializingBean {
 		local = new DefaultServiceInstance(null, serviceId, host, port, false);
 	}
 
+	public void setInstance(String serviceId, String host, int port, String scheme) {
+		local = new DefaultServiceInstance(null, serviceId, host, port, false, scheme);
+	}
+
 }

spring-cloud-commons/src/test/java/org/springframework/cloud/client/discovery/simple/SimpleDiscoveryClientPropertiesMappingTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2022 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.
@@ -32,6 +32,7 @@ import static org.assertj.core.api.BDDAssertions.then;
  * Tests for mapping properties to instances in {@link SimpleDiscoveryClient}.
  *
  * @author Biju Kunjummen
+ * @author Olga Maciaszek-Sharma
  */
 
 @SpringBootTest(properties = { "spring.application.name=service0",
@@ -73,6 +74,14 @@ public class SimpleDiscoveryClientPropertiesMappingTests {
 		then(s1.getPort()).isEqualTo(8080);
 		then(s1.getUri()).isEqualTo(URI.create("http://s11:8080"));
 		then(s1.isSecure()).isEqualTo(false);
+		then(s1.getScheme()).isEqualTo("http");
+
+		ServiceInstance s2 = this.discoveryClient.getInstances("service1").get(1);
+		then(s2.getHost()).isEqualTo("s12");
+		then(s2.getPort()).isEqualTo(8443);
+		then(s2.getUri()).isEqualTo(URI.create("https://s12:8443"));
+		then(s2.isSecure()).isEqualTo(true);
+		then(s2.getScheme()).isEqualTo("https");
 	}
 
 	@Test

spring-cloud-commons/src/test/java/org/springframework/cloud/client/discovery/simple/SimpleDiscoveryClientTests.java

@@ -34,6 +34,7 @@ import static org.assertj.core.api.BDDAssertions.then;
  * @author Biju Kunjummen
  * @author Charu Covindane
  * @author Neil Powell
+ * @author Olga Maciaszek-Sharma
  */
 public class SimpleDiscoveryClientTests {
 
@@ -47,7 +48,8 @@ public class SimpleDiscoveryClientTests {
 		DefaultServiceInstance service1Inst1 = new DefaultServiceInstance(null, null, "host1", 8080, false);
 		DefaultServiceInstance service1Inst2 = new DefaultServiceInstance(null, null, "host2", 0, true);
 		DefaultServiceInstance service1Inst3 = new DefaultServiceInstance(null, null, "host3", 0, false);
-		map.put("service1", Arrays.asList(service1Inst1, service1Inst2, service1Inst3));
+		DefaultServiceInstance service1Inst4 = new DefaultServiceInstance(null, null, "host4", 8443, true);
+		map.put("service1", Arrays.asList(service1Inst1, service1Inst2, service1Inst3, service1Inst4));
 		simpleDiscoveryProperties.setInstances(map);
 		simpleDiscoveryProperties.afterPropertiesSet();
 		this.simpleDiscoveryClient = new SimpleDiscoveryClient(simpleDiscoveryProperties);
@@ -56,7 +58,7 @@ public class SimpleDiscoveryClientTests {
 	@Test
 	public void shouldBeAbleToRetrieveServiceDetailsByName() {
 		List<ServiceInstance> instances = this.simpleDiscoveryClient.getInstances("service1");
-		then(instances.size()).isEqualTo(3);
+		then(instances.size()).isEqualTo(4);
 		then(instances.get(0).getServiceId()).isEqualTo("service1");
 		then(instances.get(0).getHost()).isEqualTo("host1");
 		then(instances.get(0).getPort()).isEqualTo(8080);
@@ -77,6 +79,13 @@ public class SimpleDiscoveryClientTests {
 		then(instances.get(2).getUri()).isEqualTo(URI.create("http://host3:80"));
 		then(instances.get(2).isSecure()).isEqualTo(false);
 		then(instances.get(2).getMetadata()).isNotNull();
+
+		then(instances.get(3).getServiceId()).isEqualTo("service1");
+		then(instances.get(3).getHost()).isEqualTo("host4");
+		then(instances.get(3).getPort()).isEqualTo(8443);
+		then(instances.get(3).getUri()).isEqualTo(URI.create("https://host4:8443"));
+		then(instances.get(3).isSecure()).isEqualTo(true);
+		then(instances.get(3).getMetadata()).isNotNull();
 	}
 
 }

spring-cloud-loadbalancer/src/test/java/org/springframework/cloud/loadbalancer/core/HealthCheckServiceInstanceListSupplierTests.java

@@ -156,7 +156,7 @@ class HealthCheckServiceInstanceListSupplierTests {
 		String serviceId = "ignored-service";
 		properties.getHealthCheck().getPath().put("ignored-service", "/health");
 		ServiceInstance serviceInstance = new DefaultServiceInstance("ignored-service-1", serviceId, "127.0.0.1", port,
-				false);
+				false, "http");
 		listSupplier = new HealthCheckServiceInstanceListSupplier(
 				ServiceInstanceListSuppliers.from(serviceId, serviceInstance),
 				buildLoadBalancerClientFactory(serviceId, properties), healthCheckFunction(restTemplate));