Create NOOP graffiti manager

teku/src/main/java/tech/pegasys/teku/cli/subcommand/debug/DebugToolsCommand.java

@@ -41,8 +41,8 @@
 import tech.pegasys.teku.spec.SpecFactory;
 import tech.pegasys.teku.spec.datastructures.state.CommitteeAssignment;
 import tech.pegasys.teku.spec.datastructures.state.beaconstate.BeaconState;
-import tech.pegasys.teku.validator.api.GraffitiManager;
 import tech.pegasys.teku.validator.api.ValidatorApiChannel;
+import tech.pegasys.teku.validator.api.noop.NoOpGraffitiManager;
 import tech.pegasys.teku.validator.beaconnode.GenesisDataProvider;
 import tech.pegasys.teku.validator.client.KeyManager;
 import tech.pegasys.teku.validator.client.NoOpKeyManager;
@@ -167,7 +167,7 @@ public int generateSwaggerDocs(
             new SystemTimeProvider(),
             Optional.empty(),
             new DoppelgangerDetectionAlert(),
-            new GraffitiManager(dataDirLayout));
+            new NoOpGraffitiManager());
 
     if (api.getRestApiDocs().isPresent()) {
       final String docs = api.getRestApiDocs().get();

validator/api/src/main/java/tech/pegasys/teku/validator/api/GraffitiManager.java

@@ -26,22 +26,20 @@
 import tech.pegasys.teku.service.serviceutils.layout.DataDirLayout;
 
 public class GraffitiManager {
+  private static final Logger LOG = LogManager.getLogger();
   static final String GRAFFITI_DIR = "graffiti";
 
-  private static final Logger LOG = LogManager.getLogger();
   private final Path graffitiPath;
 
   public GraffitiManager(final DataDirLayout dataDirLayout) {
-    this.graffitiPath = createManagementDirectory(dataDirLayout);
+    this(dataDirLayout.getValidatorDataDirectory().resolve(GRAFFITI_DIR));
   }
 
-  private Path createManagementDirectory(final DataDirLayout dataDirLayout) {
-    final Path graffitiDirectory = dataDirLayout.getValidatorDataDirectory().resolve(GRAFFITI_DIR);
-    if (!graffitiDirectory.toFile().exists() && !graffitiDirectory.toFile().mkdirs()) {
-      throw new IllegalStateException(
-          "Unable to create " + GRAFFITI_DIR + " directory for graffiti management.");
+  public GraffitiManager(final Path graffitiPath) {
+    this.graffitiPath = graffitiPath;
+    if (!graffitiPath.toFile().exists() && !graffitiPath.toFile().mkdirs()) {
+      throw new IllegalStateException("Unable to create directory for graffiti management.");
     }
-    return graffitiDirectory;
   }
 
   public Optional<String> setGraffiti(final BLSPublicKey publicKey, final String graffiti) {

validator/api/src/main/java/tech/pegasys/teku/validator/api/noop/NoOpGraffitiManager.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright Consensys Software Inc., 2024
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+ * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ */
+
+package tech.pegasys.teku.validator.api.noop;
+
+import java.nio.file.Path;
+import java.util.Optional;
+import org.apache.tuweni.bytes.Bytes32;
+import tech.pegasys.teku.bls.BLSPublicKey;
+import tech.pegasys.teku.validator.api.GraffitiManager;
+
+public class NoOpGraffitiManager extends GraffitiManager {
+  public NoOpGraffitiManager() {
+    super(Path.of("."));
+  }
+
+  @Override
+  public Optional<String> setGraffiti(final BLSPublicKey publicKey, final String graffiti) {
+    return Optional.empty();
+  }
+
+  @Override
+  public Optional<String> deleteGraffiti(final BLSPublicKey publicKey) {
+    return Optional.empty();
+  }
+
+  @Override
+  public Optional<Bytes32> getGraffiti(final BLSPublicKey publicKey) {
+    return Optional.empty();
+  }
+}

validator/api/src/test/java/tech/pegasys/teku/validator/api/GraffitiManagerTest.java

@@ -50,7 +50,7 @@ void shouldThrowExceptionWhenUnableToCreateManagementDirectory(@TempDir final Pa
 
     assertThatThrownBy(() -> new GraffitiManager(dataDirLayout))
         .isInstanceOf(IllegalStateException.class)
-        .hasMessage("Unable to create graffiti directory for graffiti management.");
+        .hasMessage("Unable to create directory for graffiti management.");
   }
 
   @Test

validator/client/src/test/java/tech/pegasys/teku/validator/client/restapi/ValidatorOpenApiTest.java

@@ -31,8 +31,8 @@
 import tech.pegasys.teku.service.serviceutils.layout.DataDirLayout;
 import tech.pegasys.teku.spec.Spec;
 import tech.pegasys.teku.spec.SpecFactory;
-import tech.pegasys.teku.validator.api.GraffitiManager;
 import tech.pegasys.teku.validator.api.ValidatorApiChannel;
+import tech.pegasys.teku.validator.api.noop.NoOpGraffitiManager;
 import tech.pegasys.teku.validator.beaconnode.GenesisDataProvider;
 import tech.pegasys.teku.validator.client.OwnedKeyManager;
 import tech.pegasys.teku.validator.client.ProposerConfigManager;
@@ -71,7 +71,7 @@ void setup() throws IOException {
             new SystemTimeProvider(),
             Optional.empty(),
             doppelgangerDetectionAction,
-            new GraffitiManager(dataDirLayout));
+            new NoOpGraffitiManager());
     final Optional<String> maybeJson = restApi.getRestApiDocs();
     assertThat(maybeJson).isPresent();
     jsonNode = util.parseSwagger(maybeJson.orElseThrow());