From ae5475d35174d04cd4520f4b9e73aafde1a07bac Mon Sep 17 00:00:00 2001
From: Oliver Drotbohm <odrotbohm@vmware.com>
Date: Thu, 5 Jan 2023 16:24:45 +0100
Subject: [PATCH] GH-87 - Make sure actuator endpoint outputs modules in
 topological order.

More fundamental modules are now rendered first as we use a LinkedHashMap as primary data structure.
---
 .../modulith/actuator/ApplicationModulesEndpoint.java         | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/spring-modulith-actuator/src/main/java/org/springframework/modulith/actuator/ApplicationModulesEndpoint.java b/spring-modulith-actuator/src/main/java/org/springframework/modulith/actuator/ApplicationModulesEndpoint.java
index 4d927c64..f62e1c42 100644
--- a/spring-modulith-actuator/src/main/java/org/springframework/modulith/actuator/ApplicationModulesEndpoint.java
+++ b/spring-modulith-actuator/src/main/java/org/springframework/modulith/actuator/ApplicationModulesEndpoint.java
@@ -19,6 +19,7 @@ import static java.util.stream.Collectors.*;
 
 import lombok.extern.slf4j.Slf4j;
 
+import java.util.LinkedHashMap;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Set;
@@ -84,7 +85,8 @@ public class ApplicationModulesEndpoint {
 		var modules = runtime.get();
 
 		return modules.stream()
-				.collect(Collectors.toMap(ApplicationModule::getName, it -> toInfo(it, modules)));
+				.collect(
+						Collectors.toMap(ApplicationModule::getName, it -> toInfo(it, modules), (l, r) -> r, LinkedHashMap::new));
 	}
 
 	private static Map<String, Object> toInfo(ApplicationModule module, ApplicationModules modules) {