Updates for boot 2.2.x

spring-cloud-commons/src/main/java/org/springframework/cloud/client/discovery/health/DiscoveryCompositeHealthIndicator.java

@@ -17,7 +17,9 @@
 package org.springframework.cloud.client.discovery.health;
 
 import java.util.ArrayList;
+import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
 
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.actuate.health.CompositeHealthIndicator;
@@ -39,18 +41,27 @@ public class DiscoveryCompositeHealthIndicator extends CompositeHealthIndicator
 	@Autowired
 	public DiscoveryCompositeHealthIndicator(HealthAggregator healthAggregator,
 			List<DiscoveryHealthIndicator> indicators) {
-		super(healthAggregator);
-		for (DiscoveryHealthIndicator indicator : indicators) {
-			Holder holder = new Holder(indicator);
-			addHealthIndicator(indicator.getName(), holder);
-			this.healthIndicators.add(holder);
-		}
+		super(healthAggregator, createMap(indicators));
+		getRegistry().getAll().values().stream()
+				.filter(healthIndicator -> healthIndicator instanceof Holder)
+				.forEach(healthIndicator -> this.healthIndicators
+						.add((Holder) healthIndicator));
 	}
 
 	public ArrayList<Holder> getHealthIndicators() {
 		return this.healthIndicators;
 	}
 
+	public static Map<String, HealthIndicator> createMap(
+			List<DiscoveryHealthIndicator> indicators) {
+		Map<String, HealthIndicator> map = new HashMap<>();
+		for (DiscoveryHealthIndicator indicator : indicators) {
+			Holder holder = new Holder(indicator);
+			map.put(indicator.getName(), holder);
+		}
+		return map;
+	}
+
 	/**
 	 * Holder for the Health Indicator.
 	 */

spring-cloud-commons/src/main/java/org/springframework/cloud/configuration/SpringBootVersionVerifier.java

@@ -39,6 +39,7 @@ class SpringBootVersionVerifier implements CompatibilityVerifier {
 			this.put("1.5", is1_5());
 			this.put("2.0", is2_0());
 			this.put("2.1", is2_1());
+			this.put("2.2", is2_2());
 		}
 	};
 
@@ -137,6 +138,30 @@ class SpringBootVersionVerifier implements CompatibilityVerifier {
 		};
 	}
 
+	CompatibilityPredicate is2_2() {
+		return new CompatibilityPredicate() {
+
+			@Override
+			public String toString() {
+				return "Predicate for Boot 2.2";
+			}
+
+			@Override
+			public boolean isCompatible() {
+				try {
+					// since 2.1
+					Class.forName(
+							"org.springframework.boot.autoconfigure.flyway.FlywayMigrationScriptMissingException");
+					return true;
+				}
+				catch (ClassNotFoundException e) {
+					return false;
+				}
+
+			}
+		};
+	}
+
 	private String errorDescription() {
 		String versionFromManifest = getVersionFromManifest();
 		if (StringUtils.hasText(versionFromManifest)) {

spring-cloud-commons/src/test/java/org/springframework/cloud/configuration/SpringBootDependencyTests.java

@@ -144,7 +144,7 @@ public class SpringBootDependencyTests {
 
 	@Test
 	public void should_match_against_current_manifest() {
-		List<String> acceptedVersions = Collections.singletonList("2.1");
+		List<String> acceptedVersions = Collections.singletonList("2.2");
 		SpringBootVersionVerifier versionVerifier = new SpringBootVersionVerifier(
 				acceptedVersions);
 		versionVerifier.ACCEPTED_VERSIONS.clear();

spring-cloud-context/src/test/java/org/springframework/cloud/bootstrap/config/BootstrapListenerHierarchyIntegrationTests.java

@@ -28,7 +28,7 @@ import static org.springframework.boot.WebApplicationType.NONE;
 
 /**
  * Integration tests for Bootstrap Listener's functionality of adding a bootstrap context
- * as the root Application Context
+ * as the root Application Context.
  *
  * @author Biju Kunjummen
  */