Throw error if a module is not known

Author: jjohannes

src/main/java/org/gradlex/javamodule/dependencies/JavaModuleDependenciesExtension.java

@@ -113,7 +113,7 @@ public JavaModuleDependenciesExtension(VersionCatalogsExtension versionCatalogs)
      * @return Dependency notation
      */
     public Provider<String> ga(String moduleName) {
-        return getModuleNameToGA().getting(moduleName).orElse(mapByPrefix(getProviders().provider(() -> moduleName)));
+        return getModuleNameToGA().getting(moduleName).orElse(mapByPrefix(getProviders().provider(() -> moduleName))).orElse(errorIfNotFound(moduleName));
     }
 
     /**
@@ -124,7 +124,7 @@ public Provider<String> ga(String moduleName) {
      * @return Dependency notation
      */
     public Provider<String> ga(Provider<String> moduleName) {
-        return moduleName.flatMap(n -> getModuleNameToGA().getting(n)).orElse(mapByPrefix(moduleName));
+        return moduleName.flatMap(n -> getModuleNameToGA().getting(n)).orElse(mapByPrefix(moduleName)).orElse(errorIfNotFound(moduleName));
     }
 
     private Provider<String> mapByPrefix(Provider<String> moduleName) {
@@ -179,6 +179,10 @@ public Provider<Map<String, Object>> gav(String moduleName) {
         return ga(moduleName).map(ga -> findGav(ga, moduleName));
     }
 
+    Provider<Map<String, Object>> gavNoError(String moduleName) {
+        return getModuleNameToGA().getting(moduleName).orElse(mapByPrefix(getProviders().provider(() -> moduleName))).map(ga -> findGav(ga, moduleName));
+    }
+
     /**
      * If a Version Catalog is used:
      * Converts 'Module Name' and the matching 'Version' from the Version Catalog to
@@ -292,6 +296,18 @@ FileCollection doAddRequiresRuntimeSupport(Task task, SourceSet sourceSet) {
         return syntheticModuleInfoFolders;
     }
 
+    private <T> Provider<T> errorIfNotFound(String moduleName) {
+        return getProviders().provider(() -> {
+            throw new RuntimeException("Unknown Module: " + moduleName);
+        });
+    }
+
+    private <T> Provider<T> errorIfNotFound(Provider<String> moduleName) {
+        return getProviders().provider(() -> {
+            throw new RuntimeException("Unknown Module: " + moduleName.get());
+        });
+    }
+
     @Inject
     protected abstract ObjectFactory getObjects();
 

src/main/java/org/gradlex/javamodule/dependencies/JavaModuleDependenciesPlugin.java

@@ -250,7 +250,7 @@ private void declareDependency(String moduleName, @Nullable String ownModuleName
         Map<String, String> allProjectNamesAndGroups = project.getRootProject().getSubprojects().stream().collect(
                 Collectors.toMap(Project::getName, p -> (String) p.getGroup()));
 
-        Provider<Map<String, Object>> gav = javaModuleDependencies.gav(moduleName);
+        Provider<Map<String, Object>> gav = javaModuleDependencies.gavNoError(moduleName);
         String moduleNameSuffix = ownModuleNamesPrefix == null ? null :
                 moduleName.startsWith(ownModuleNamesPrefix + ".") ? moduleName.substring(ownModuleNamesPrefix.length() + 1) :
                         ownModuleNamesPrefix.isEmpty() ? moduleName : null;