src/main/java/net/hostsharing/hsadminng/hs/hosting/asset/validators/HsDomainSetupHostingAssetValidator.java

@@ -2,9 +2,9 @@ package net.hostsharing.hsadminng.hs.hosting.asset.validators;
 
 import net.hostsharing.hsadminng.hs.hosting.asset.HsHostingAsset;
 
-import java.util.ArrayList;
 import java.util.List;
 import java.util.Optional;
+import java.util.function.Supplier;
 import java.util.regex.Pattern;
 
 import static net.hostsharing.hsadminng.hs.hosting.asset.HsHostingAssetType.DOMAIN_SETUP;
@@ -33,18 +33,44 @@ class HsDomainSetupHostingAssetValidator extends HostingAssetEntityValidator {
             return violations;
         }
 
-        final var dnsResult = new Dns(assetEntity.getIdentifier()).fetchRecordsOfType("TXT");
+        final var domainName = assetEntity.getIdentifier();
+        final var dnsResult = new Dns(domainName).fetchRecordsOfType("TXT");
+        final Supplier<String> getCode = () -> assetEntity.getBookingItem().getDirectValue("verificationCode", String.class);
         switch (dnsResult.status()) {
-            case Dns.Status.SUCCESS:
+            case Dns.Status.SUCCESS: {
-                violations.addAll(handleDomainNameFound(assetEntity, dnsResult));
+                final var expectedTxtRecordValue = "Hostsharing-domain-setup-verification-code=" + getCode.get();
+                final var verificationFound = findTxtRecord(dnsResult, expectedTxtRecordValue)
+                        .or(() -> superDomain(domainName)
+                                .flatMap(superDomainName -> findTxtRecord(
+                                        new Dns(superDomainName).fetchRecordsOfType("TXT"),
+                                        expectedTxtRecordValue))
+                        );
+                if (verificationFound.isEmpty()) {
+                    violations.add(
+                            "[DNS] no TXT record '" + expectedTxtRecordValue +
+                                    "' found for domain name '" + domainName + "' (nor in its super-domain)");
+                }
                 break;
+            }
 
-            case Dns.Status.NAME_NOT_FOUND:
+            case Dns.Status.NAME_NOT_FOUND: {
-                violations.addAll(handleDomainNameNotFoundError(assetEntity, dnsResult));
+                if (isDnsVerificationRequiredForUnregisteredDomain(assetEntity)) {
+                    final var superDomain = superDomain(domainName);
+                    final var expectedTxtRecordValue = "Hostsharing-domain-setup-verification-code=" + getCode.get();
+                    final var verificationFoundInSuperDomain = superDomain.flatMap(superDomainName -> findTxtRecord(
+                            new Dns(superDomainName).fetchRecordsOfType("TXT"),
+                            expectedTxtRecordValue));
+                    if (verificationFoundInSuperDomain.isEmpty()) {
+                        violations.add(
+                                "[DNS] no TXT record '" + expectedTxtRecordValue +
+                                        "' found for domain name '" + superDomain.orElseThrow() + "'");
+                    }
+                }
+                // otherwise no DNS verification to be able to setup DNS for domains to register
                 break;
+            }
 
             case Dns.Status.INVALID_NAME:
-                // should not happen because we validate the domain name at booking item level
                 violations.add("[DNS] invalid domain name '" + assetEntity.getIdentifier() + "'");
                 break;
 
@@ -56,10 +82,6 @@ class HsDomainSetupHostingAssetValidator extends HostingAssetEntityValidator {
         return violations;
     }
 
-    private static String verificationCode(final HsHostingAsset assetEntity) {
-        return assetEntity.getBookingItem().getDirectValue("verificationCode", String.class);
-    }
-
     @Override
     protected Pattern identifierPattern(final HsHostingAsset assetEntity) {
         if (assetEntity.getBookingItem() != null) {
@@ -71,49 +93,6 @@ class HsDomainSetupHostingAssetValidator extends HostingAssetEntityValidator {
         return Pattern.compile(SUBDOMAIN_NAME_REGEX + "\\." + parentDomainName.replace(".", "\\."), Pattern.CASE_INSENSITIVE);
     }
 
-    private static List<String> handleDomainNameFound(final HsHostingAsset assetEntity, final Dns.Result dnsResult) {
-        final var violations = new ArrayList<String>();
-        final var expectedTxtRecordValue = "Hostsharing-domain-setup-verification-code=" + verificationCode(assetEntity);
-        final var verificationFound = findTxtRecord(dnsResult, expectedTxtRecordValue)
-                .or(() -> superDomain(assetEntity.getIdentifier())
-                        .flatMap(superDomainName -> findTxtRecord(
-                                new Dns(superDomainName).fetchRecordsOfType("TXT"),
-                                expectedTxtRecordValue))
-                );
-        if (verificationFound.isEmpty()) {
-            violations.add(
-                    "[DNS] no TXT record '" + expectedTxtRecordValue +
-                            "' found for domain name '" + assetEntity.getIdentifier() + "' (nor in its super-domain)");
-        }
-        return violations;
-    }
-
-    private static List<String> handleDomainNameNotFoundError(final HsHostingAsset assetEntity, final Dns.Result dnsResult) {
-        final var violations = new ArrayList<String>();
-        if (isDnsVerificationRequiredForUnregisteredDomain(assetEntity)) {
-            final var superDomain = superDomain(assetEntity.getIdentifier());
-            final var expectedTxtRecordValue = "Hostsharing-domain-setup-verification-code=" + verificationCode(assetEntity);
-            final var verificationFoundInSuperDomain = superDomain.map(superDomainName ->
-                            {
-                                final Dns.Result superDomainDnsResult = new Dns(superDomainName).fetchRecordsOfType("TXT");
-                                if (superDomainDnsResult.status() != Dns.Status.SUCCESS) {
-                                    violations.add("[DNS] lookup failed for domain name '" + superDomainName + "': " + dnsResult.exception());
-                                }
-                                return superDomainDnsResult;
-                            }
-                    )
-                    .flatMap(records -> findTxtRecord(records, expectedTxtRecordValue));
-            if (verificationFoundInSuperDomain.isEmpty()) {
-                violations.add(
-                        "[DNS] no TXT record '" + expectedTxtRecordValue +
-                                "' found for domain name '" + superDomain.orElseThrow() + "'");
-            }
-        } else {
-            // otherwise no DNS verification to be able to setup DNS for domains to register
-        }
-        return violations;
-    }
-
     private static boolean isDnsVerificationRequiredForUnregisteredDomain(final HsHostingAsset assetEntity) {
         return !Dns.isRegistrableDomain(assetEntity.getIdentifier())
                 && assetEntity.getParentAsset() == null;

src/test/java/net/hostsharing/hsadminng/hs/hosting/asset/validators/HsDomainSetupHostingAssetValidatorUnitTest.java

@@ -358,12 +358,6 @@ class HsDomainSetupHostingAssetValidatorUnitTest {
                 .isRejectedWithCauseMissingVerificationIn("example.org");
     }
 
-    @Test
-    void rejectSetupOfUnregisteredSubdomainOfUnregisteredSuperDomain() {
-        domainSetupFor("sub.sub.example.org").notRegistered()
-                .isRejectedWithCauseDomainNameNotFound("sub.example.org");
-    }
-
     @Test
     void acceptSetupOfUnregisteredSubdomainWithParentAssetEvenWithoutDnsVerificationInSuperDomain() {
         domainSetupWithParentAssetFor("sub.example.org").notRegistered()
@@ -494,12 +488,6 @@ class HsDomainSetupHostingAssetValidatorUnitTest {
             );
         }
 
-        void isRejectedWithCauseDomainNameNotFound(final String domainName) {
-            assertThat(validate()).contains(
-                    "[DNS] lookup failed for domain name '" + domainName + "': javax.naming.NameNotFoundException: domain not registered"
-            );
-        }
-
         void isAccepted() {
             assertThat(validate()).isEmpty();
         }