Add Cloud KMS based secret storage

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=147791972

java/google/registry/keyring/api/KeyringException.java

@@ -0,0 +1,29 @@
+// Copyright 2017 The Nomulus Authors. All Rights Reserved.
+//
+// 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 google.registry.keyring.api;
+
+/** Base class for all {@link Keyring} specific unchecked exceptions. */
+public class KeyringException extends RuntimeException {
+
+  /** @see RuntimeException#RuntimeException(String) */
+  public KeyringException(String msg) {
+    super(msg);
+  }
+
+  /** @see RuntimeException#RuntimeException(String, Throwable) */
+  public KeyringException(String msg, Throwable cause) {
+    super(msg, cause);
+  }
+}