Github user mike-jumper commented on a diff in the pull request:
https://github.com/apache/guacamole-client/pull/336#discussion_r241525041
--- Diff:
extensions/guacamole-auth-vault/modules/guacamole-auth-vault-azure/src/main/java/org/apache/guacamole/auth/vault/azure/conf/AzureKeyVaultAuthenticationException.java
---
@@ -0,0 +1,57 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you 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 org.apache.guacamole.auth.vault.azure.conf;
+
+/**
+ * Unchecked exception thrown by AzureKeyVaultCredentials if an error
occurs
+ * during the authentication process. Note that the base
KeyVaultCredentials
+ * base class does not provide for checked exceptions within the
authentication
+ * process.
+ *
+ * @see AzureKeyVaultCredentials#doAuthenticate(java.lang.String,
java.lang.String, java.lang.String)
+ */
+public class AzureKeyVaultAuthenticationException extends RuntimeException
{
--- End diff --
Yep. From the top of the class:
https://github.com/apache/guacamole-client/blob/4d90b34732d81efd1fbdeab8df9d9edb939f6266/extensions/guacamole-auth-vault/modules/guacamole-auth-vault-azure/src/main/java/org/apache/guacamole/auth/vault/azure/conf/AzureKeyVaultAuthenticationException.java#L22-L30
The API provided for Azure does not allow for checked exceptions like
`GuacamoleException` to be thrown. Only unchecked exceptions can be used for
things which must be thrown within callbacks, etc. in their API. We catch this
specific exception and translate into a `GuacamoleException` before things make
their way back out to Guacamole.
---
